Bump to 2.1.0

Changelog for 2.1.0

.github/workflows/release.yml

@@ -1,15 +1,32 @@
-# Build releases and (on tags) publish to PyPI
+# This is a GitHub workflow defining a set of jobs with a set of steps.
+# ref: https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions
+#
+# Test build release artifacts (PyPI package, Docker images) and publish them on
+# pushed git tags.
+#
 name: Release
 
-# always build releases (to make sure wheel-building works)
-# but only publish to PyPI on tags
 on:
-  push:
-    branches:
-      - "!dependabot/**"
-    tags:
-      - "*"
   pull_request:
+    paths-ignore:
+      - "docs/**"
+      - "**.md"
+      - "**.rst"
+      - ".github/workflows/*"
+      - "!.github/workflows/release.yml"
+  push:
+    paths-ignore:
+      - "docs/**"
+      - "**.md"
+      - "**.rst"
+      - ".github/workflows/*"
+      - "!.github/workflows/release.yml"
+    branches-ignore:
+      - "dependabot/**"
+      - "pre-commit-ci-update-config"
+    tags:
+      - "**"
+  workflow_dispatch:
 
 jobs:
   build-release:
@@ -96,7 +113,6 @@ jobs:
       # Setup docker to build for multiple platforms, see:
       # https://github.com/docker/build-push-action/tree/v2.4.0#usage
       # https://github.com/docker/build-push-action/blob/v2.4.0/docs/advanced/multi-platform.md
-
       - name: Set up QEMU (for docker buildx)
         uses: docker/setup-qemu-action@25f0500ff22e406f7191a2a8ba8cda16901ca018 # associated tag: v1.0.2
 
@@ -120,6 +136,8 @@ jobs:
         run: |
           docker login -u "${{ secrets.DOCKERHUB_USERNAME }}" -p "${{ secrets.DOCKERHUB_TOKEN }}"
 
+      # image: jupyterhub/jupyterhub
+      #
       # https://github.com/jupyterhub/action-major-minor-tag-calculator
       # If this is a tagged build this will return additional parent tags.
       # E.g. 1.2.3 is expanded to Docker tags
@@ -129,7 +147,7 @@ jobs:
       # If GITHUB_TOKEN isn't available (e.g. in PRs) returns no tags [].
       - name: Get list of jupyterhub tags
         id: jupyterhubtags
-        uses: jupyterhub/action-major-minor-tag-calculator@v1
+        uses: jupyterhub/action-major-minor-tag-calculator@v2
         with:
           githubToken: ${{ secrets.GITHUB_TOKEN }}
           prefix: "${{ env.REGISTRY }}jupyterhub/jupyterhub:"
@@ -137,7 +155,7 @@ jobs:
           branchRegex: ^\w[\w-.]*$
 
       - name: Build and push jupyterhub
-        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f # associated tag: v2.4.0
+        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f
         with:
           context: .
           platforms: linux/amd64,linux/arm64
@@ -146,11 +164,11 @@ jobs:
           # array into a comma separated list of tags
           tags: ${{ join(fromJson(steps.jupyterhubtags.outputs.tags)) }}
 
-      # jupyterhub-onbuild
-
+      # image: jupyterhub/jupyterhub-onbuild
+      #
       - name: Get list of jupyterhub-onbuild tags
         id: onbuildtags
-        uses: jupyterhub/action-major-minor-tag-calculator@v1
+        uses: jupyterhub/action-major-minor-tag-calculator@v2
         with:
           githubToken: ${{ secrets.GITHUB_TOKEN }}
           prefix: "${{ env.REGISTRY }}jupyterhub/jupyterhub-onbuild:"
@@ -158,7 +176,7 @@ jobs:
           branchRegex: ^\w[\w-.]*$
 
       - name: Build and push jupyterhub-onbuild
-        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f # associated tag: v2.4.0
+        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f
         with:
           build-args: |
             BASE_IMAGE=${{ fromJson(steps.jupyterhubtags.outputs.tags)[0] }}
@@ -167,11 +185,11 @@ jobs:
           push: true
           tags: ${{ join(fromJson(steps.onbuildtags.outputs.tags)) }}
 
-      # jupyterhub-demo
-
+      # image: jupyterhub/jupyterhub-demo
+      #
       - name: Get list of jupyterhub-demo tags
         id: demotags
-        uses: jupyterhub/action-major-minor-tag-calculator@v1
+        uses: jupyterhub/action-major-minor-tag-calculator@v2
         with:
           githubToken: ${{ secrets.GITHUB_TOKEN }}
           prefix: "${{ env.REGISTRY }}jupyterhub/jupyterhub-demo:"
@@ -179,7 +197,7 @@ jobs:
           branchRegex: ^\w[\w-.]*$
 
       - name: Build and push jupyterhub-demo
-        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f # associated tag: v2.4.0
+        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f
         with:
           build-args: |
             BASE_IMAGE=${{ fromJson(steps.onbuildtags.outputs.tags)[0] }}
@@ -190,3 +208,24 @@ jobs:
           platforms: linux/amd64
           push: true
           tags: ${{ join(fromJson(steps.demotags.outputs.tags)) }}
+
+      # image: jupyterhub/singleuser
+      #
+      - name: Get list of jupyterhub/singleuser tags
+        id: singleusertags
+        uses: jupyterhub/action-major-minor-tag-calculator@v2
+        with:
+          githubToken: ${{ secrets.GITHUB_TOKEN }}
+          prefix: "${{ env.REGISTRY }}jupyterhub/singleuser:"
+          defaultTag: "${{ env.REGISTRY }}jupyterhub/singleuser:noref"
+          branchRegex: ^\w[\w-.]*$
+
+      - name: Build and push jupyterhub/singleuser
+        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f
+        with:
+          build-args: |
+            JUPYTERHUB_VERSION=${{ github.ref_type == 'tag' && github.ref_name || format('git:{0}', github.sha) }}
+          context: singleuser
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ join(fromJson(steps.singleusertags.outputs.tags)) }}

.github/workflows/support-bot.yml

@@ -0,0 +1,31 @@
+# https://github.com/dessant/support-requests
+name: "Support Requests"
+
+on:
+  issues:
+    types: [labeled, unlabeled, reopened]
+
+permissions:
+  issues: write
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/support-requests@v2
+        with:
+          github-token: ${{ github.token }}
+          support-label: "support"
+          issue-comment: |
+            Hi there @{issue-author} :wave:!
+
+            I closed this issue because it was labelled as a support question.
+
+            Please help us organize discussion by posting this on the http://discourse.jupyter.org/ forum.
+
+            Our goal is to sustain a positive experience for both users and developers. We use GitHub issues for specific discussions related to changing a repository's content, and let the forum be where we can more generally help and inspire each other.
+
+            Thanks you for being an active member of our community! :heart:
+          close-issue: true
+          lock-issue: false
+          issue-lock-reason: "off-topic"

.github/workflows/test-docs.yml

@@ -0,0 +1,64 @@
+# This is a GitHub workflow defining a set of jobs with a set of steps.
+# ref: https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions
+#
+# This workflow validates the REST API definition and runs the pytest tests in
+# the docs/ folder. This workflow does not build the documentation. That is
+# instead tested via ReadTheDocs (https://readthedocs.org/projects/jupyterhub/).
+#
+name: Test docs
+
+# The tests defined in docs/ are currently influenced by changes to _version.py
+# and scopes.py.
+on:
+  pull_request:
+    paths:
+      - "docs/**"
+      - "jupyterhub/_version.py"
+      - "jupyterhub/scopes.py"
+      - ".github/workflows/*"
+      - "!.github/workflows/test-docs.yml"
+  push:
+    paths:
+      - "docs/**"
+      - "jupyterhub/_version.py"
+      - "jupyterhub/scopes.py"
+      - ".github/workflows/*"
+      - "!.github/workflows/test-docs.yml"
+    branches-ignore:
+      - "dependabot/**"
+      - "pre-commit-ci-update-config"
+    tags:
+      - "**"
+  workflow_dispatch:
+
+env:
+  # UTF-8 content may be interpreted as ascii and causes errors without this.
+  LANG: C.UTF-8
+  PYTEST_ADDOPTS: "--verbose --color=yes"
+
+jobs:
+  validate-rest-api-definition:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Validate REST API definition
+        uses: char0n/swagger-editor-validate@182d1a5d26ff5c2f4f452c43bd55e2c7d8064003
+        with:
+          definition-file: docs/source/_static/rest-api.yml
+
+  test-docs:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          python-version: "3.9"
+
+      - name: Install requirements
+        run: |
+          pip install -r docs/requirements.txt pytest -e .
+
+      - name: pytest docs/
+        run: |
+          pytest docs/

.github/workflows/test.yml

@@ -1,25 +1,67 @@
 # This is a GitHub workflow defining a set of jobs with a set of steps.
-# ref: https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions
+# ref: https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions
 #
 name: Test
 
-# Trigger the workflow's on all PRs but only on pushed tags or commits to
-# main/master branch to avoid PRs developed in a GitHub fork's dedicated branch
-# to trigger.
 on:
   pull_request:
+    paths-ignore:
+      - "docs/**"
+      - "**.md"
+      - "**.rst"
+      - ".github/workflows/*"
+      - "!.github/workflows/test.yml"
   push:
+    paths-ignore:
+      - "docs/**"
+      - "**.md"
+      - "**.rst"
+      - ".github/workflows/*"
+      - "!.github/workflows/test.yml"
+    branches-ignore:
+      - "dependabot/**"
+      - "pre-commit-ci-update-config"
+    tags:
+      - "**"
   workflow_dispatch:
 
 env:
   # UTF-8 content may be interpreted as ascii and causes errors without this.
   LANG: C.UTF-8
+  PYTEST_ADDOPTS: "--verbose --color=yes"
 
 jobs:
+  jstest:
+    # Run javascript tests
+    runs-on: ubuntu-20.04
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v2
+      # NOTE: actions/setup-node@v1 make use of a cache within the GitHub base
+      #       environment and setup in a fraction of a second.
+      - name: Install Node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "14"
+
+      - name: Install Node dependencies
+        run: |
+          npm install -g yarn
+
+      - name: Run yarn
+        run: |
+          cd jsx
+          yarn
+
+      - name: yarn test
+        run: |
+          cd jsx
+          yarn test
+
   # Run "pytest jupyterhub/tests" in various configurations
   pytest:
     runs-on: ubuntu-20.04
-    timeout-minutes: 10
+    timeout-minutes: 15
 
     strategy:
       # Keep running even if one variation of the job fail
@@ -38,9 +80,9 @@ jobs:
         #   Tests everything when JupyterHub works against a dedicated mysql or
         #   postgresql server.
         #
-        # jupyter_server:
+        # nbclassic:
         #   Tests everything when the user instances are started with
-        #   jupyter_server instead of notebook.
+        #   notebook instead of jupyter_server.
         #
         # ssl:
         #   Tests everything using internal SSL connections instead of
@@ -48,7 +90,7 @@ jobs:
         #
         # main_dependencies:
         #   Tests everything when the we use the latest available dependencies
-        #   from: ipytraitlets.
+        #   from: traitlets.
         #
         # NOTE: Since only the value of these parameters are presented in the
         #       GitHub UI when the workflow run, we avoid using true/false as
@@ -56,6 +98,7 @@ jobs:
         include:
           - python: "3.6"
             oldest_dependencies: oldest_dependencies
+            nbclassic: nbclassic
           - python: "3.6"
             subdomain: subdomain
           - python: "3.7"
@@ -65,7 +108,7 @@ jobs:
           - python: "3.8"
             db: postgres
           - python: "3.8"
-            jupyter_server: jupyter_server
+            nbclassic: nbclassic
           - python: "3.9"
             main_dependencies: main_dependencies
 
@@ -105,7 +148,6 @@ jobs:
         run: |
           npm install
           npm install -g configurable-http-proxy
-          npm install -g yarn
           npm list
 
       # NOTE: actions/setup-python@v2 make use of a cache within the GitHub base
@@ -130,9 +172,9 @@ jobs:
           if [ "${{ matrix.main_dependencies }}" != "" ]; then
               pip install git+https://github.com/ipython/traitlets#egg=traitlets --force
           fi
-          if [ "${{ matrix.jupyter_server }}" != "" ]; then
-              pip uninstall notebook --yes
-              pip install jupyter_server
+          if [ "${{ matrix.nbclassic }}" != "" ]; then
+              pip uninstall jupyter_server --yes
+              pip install notebook
           fi
           if [ "${{ matrix.db }}" == "mysql" ]; then
               pip install mysql-connector-python
@@ -168,33 +210,32 @@ jobs:
         if: ${{ matrix.db }}
         run: |
           if [ "${{ matrix.db }}" == "mysql" ]; then
+            if [[ -z "$(which mysql)" ]]; then
               sudo apt-get update
               sudo apt-get install -y mysql-client
+            fi
               DB=mysql bash ci/docker-db.sh
               DB=mysql bash ci/init-db.sh
           fi
           if [ "${{ matrix.db }}" == "postgres" ]; then
+            if [[ -z "$(which psql)" ]]; then
               sudo apt-get update
               sudo apt-get install -y postgresql-client
+            fi
               DB=postgres bash ci/docker-db.sh
               DB=postgres bash ci/init-db.sh
           fi
 
       - name: Run pytest
-        # FIXME: --color=yes explicitly set because:
-        #        https://github.com/actions/runner/issues/241
         run: |
-          pytest -v --maxfail=2 --color=yes --cov=jupyterhub jupyterhub/tests
-      - name: Run yarn jest test
-        run: |
-          cd jsx && yarn && yarn test
+          pytest --maxfail=2 --cov=jupyterhub jupyterhub/tests
       - name: Submit codecov report
         run: |
           codecov
 
   docker-build:
     runs-on: ubuntu-20.04
-    timeout-minutes: 10
+    timeout-minutes: 20
 
     steps:
       - uses: actions/checkout@v2

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.26.0
+    rev: v2.31.0
     hooks:
       - id: pyupgrade
         args:
@@ -10,19 +10,19 @@ repos:
     hooks:
       - id: reorder-python-imports
   - repo: https://github.com/psf/black
-    rev: 21.8b0
+    rev: 21.12b0
     hooks:
       - id: black
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.4.0
+    rev: v2.5.1
     hooks:
       - id: prettier
   - repo: https://github.com/PyCQA/flake8
-    rev: "3.9.2"
+    rev: "4.0.1"
     hooks:
       - id: flake8
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.0.1
+    rev: v4.1.0
     hooks:
       - id: end-of-file-fixer
       - id: check-case-conflict

CHECKLIST-Release.md

@@ -1,26 +0,0 @@
-# Release checklist
-
-- [ ] Upgrade Docs prior to Release
-
-  - [ ] Change log
-  - [ ] New features documented
-  - [ ] Update the contributor list - thank you page
-
-- [ ] Upgrade and test Reference Deployments
-
-- [ ] Release software
-
-  - [ ] Make sure 0 issues in milestone
-  - [ ] Follow release process steps
-  - [ ] Send builds to PyPI (Warehouse) and Conda Forge
-
-- [ ] Blog post and/or release note
-
-- [ ] Notify users of release
-
-  - [ ] Email Jupyter and Jupyter In Education mailing lists
-  - [ ] Tweet (optional)
-
-- [ ] Increment the version number for the next release
-
-- [ ] Update roadmap

README.md

@@ -56,9 +56,11 @@ Basic principles for operation are:
   servers.
 
 JupyterHub also provides a
-[REST API](https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/jupyter/jupyterhub/HEAD/docs/rest-api.yml#/default)
+[REST API][]
 for administration of the Hub and its users.
 
+[rest api]: https://juptyerhub.readthedocs.io/en/latest/reference/rest-api.html
+
 ## Installation
 
 ### Check prerequisites
@@ -115,8 +117,7 @@ To start the Hub server, run the command:
 
     jupyterhub
 
-Visit `https://localhost:8000` in your browser, and sign in with your unix
-PAM credentials.
+Visit `http://localhost:8000` in your browser, and sign in with your system username and password.
 
 _Note_: To allow multiple users to sign in to the server, you will need to
 run the `jupyterhub` command as a _privileged user_, such as root.
@@ -239,7 +240,7 @@ You can also talk with us on our JupyterHub [Gitter](https://gitter.im/jupyterhu
 - [Reporting Issues](https://github.com/jupyterhub/jupyterhub/issues)
 - [JupyterHub tutorial](https://github.com/jupyterhub/jupyterhub-tutorial)
 - [Documentation for JupyterHub](https://jupyterhub.readthedocs.io/en/latest/) | [PDF (latest)](https://media.readthedocs.org/pdf/jupyterhub/latest/jupyterhub.pdf) | [PDF (stable)](https://media.readthedocs.org/pdf/jupyterhub/stable/jupyterhub.pdf)
-- [Documentation for JupyterHub's REST API](https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/jupyter/jupyterhub/HEAD/docs/rest-api.yml#/default)
+- [Documentation for JupyterHub's REST API][rest api]
 - [Documentation for Project Jupyter](http://jupyter.readthedocs.io/en/latest/index.html) | [PDF](https://media.readthedocs.org/pdf/jupyter/latest/jupyter.pdf)
 - [Project Jupyter website](https://jupyter.org)
 - [Project Jupyter community](https://jupyter.org/community)

RELEASE.md

@@ -0,0 +1,50 @@
+# How to make a release
+
+`jupyterhub` is a package [available on
+PyPI](https://pypi.org/project/jupyterhub/) and
+[conda-forge](https://conda-forge.org/).
+These are instructions on how to make a release on PyPI.
+The PyPI release is done automatically by CI when a tag is pushed.
+
+For you to follow along according to these instructions, you need:
+
+- To have push rights to the [jupyterhub GitHub
+  repository](https://github.com/jupyterhub/jupyterhub).
+
+## Steps to make a release
+
+1. Checkout main and make sure it is up to date.
+
+   ```shell
+   ORIGIN=${ORIGIN:-origin} # set to the canonical remote, e.g. 'upstream' if 'origin' is not the official repo
+   git checkout main
+   git fetch $ORIGIN main
+   git reset --hard $ORIGIN/main
+   ```
+
+1. Make sure `docs/source/changelog.md` is up-to-date.
+   [github-activity][] can help with this.
+
+1. Update the version with `tbump`.
+   You can see what will happen without making any changes with `tbump --dry-run ${VERSION}`
+
+   ```shell
+   tbump ${VERSION}
+   ```
+
+   This will tag and publish a release,
+   which will be finished on CI.
+
+1. Reset the version back to dev, e.g. `2.1.0.dev` after releasing `2.0.0`
+
+   ```shell
+   tbump --no-tag ${NEXT_VERSION}.dev
+   ```
+
+1. Following the release to PyPI, an automated PR should arrive to
+   [conda-forge/jupyterhub-feedstock][],
+   check for the tests to succeed on this PR and then merge it to successfully
+   update the package for `conda` on the conda-forge channel.
+
+[github-activity]: https://github.com/choldgraf/github-activity
+[conda-forge/jupyterhub-feedstock]: https://github.com/conda-forge/jupyterhub-feedstock

SECURITY.md

@@ -0,0 +1,5 @@
+# Reporting a Vulnerability
+
+If you believe you’ve found a security vulnerability in a Jupyter
+project, please report it to security@ipython.org. If you prefer to
+encrypt your security reports, you can use [this PGP public key](https://jupyter-notebook.readthedocs.io/en/stable/_downloads/1d303a645f2505a8fd283826fafc9908/ipython_security.asc).

dev-requirements.txt

@@ -7,13 +7,14 @@ codecov
 coverage
 cryptography
 html5lib  # needed for beautifulsoup
+jupyterlab >=3
 mock
-notebook
 pre-commit
 pytest>=3.3
 pytest-asyncio
 pytest-cov
 requests-mock
+tbump
 # blacklist urllib3 releases affected by https://github.com/urllib3/urllib3/issues/1683
 # I *think* this should only affect testing, not production
 urllib3!=1.25.4,!=1.25.5

docs/Makefile

@@ -53,14 +53,6 @@ help:
 clean:
 	rm -rf $(BUILDDIR)/*
 
-node_modules: package.json
-	npm install && touch node_modules
-
-rest-api: source/_static/rest-api/index.html
-
-source/_static/rest-api/index.html: rest-api.yml node_modules
-	npm run rest-api
-
 metrics: source/reference/metrics.rst
 
 source/reference/metrics.rst: generate-metrics.py
@@ -71,7 +63,7 @@ scopes: source/rbac/scope-table.md
 source/rbac/scope-table.md: source/rbac/generate-scope-table.py
 	python3 source/rbac/generate-scope-table.py
 
-html: rest-api metrics scopes
+html: metrics scopes
 	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."

docs/package.json

@@ -1,14 +0,0 @@
-{
-  "name": "jupyterhub-docs-build",
-  "version": "0.8.0",
-  "description": "build JupyterHub swagger docs",
-  "scripts": {
-    "rest-api": "bootprint openapi ./rest-api.yml source/_static/rest-api"
-  },
-  "author": "",
-  "license": "BSD-3-Clause",
-  "devDependencies": {
-    "bootprint": "^1.0.0",
-    "bootprint-openapi": "^1.0.0"
-  }
-}

docs/requirements.txt

@@ -1,12 +1,12 @@
 -r ../requirements.txt
 
 alabaster_jupyterhub
-# Temporary fix of #3021. Revert back to released autodoc-traits when
-# 0.1.0 released.
-https://github.com/jupyterhub/autodoc-traits/archive/d22282c1c18c6865436e06d8b329c06fe12a07f8.zip
+autodoc-traits
 myst-parser
+pre-commit
 pydata-sphinx-theme
 pytablewriter>=0.56
+ruamel.yaml
 sphinx>=1.7
 sphinx-copybutton
 sphinx-jsonschema

docs/source/_static/custom.css

@@ -2,3 +2,9 @@
 .navbar-brand {
   height: 4rem !important;
 }
+
+/* hide redundant funky-formatted swagger-ui version */
+
+.swagger-ui .info .title small {
+  display: none !important;
+}

docs/source/admin/upgrading.rst

@@ -1,5 +1,3 @@
-.. _admin/upgrading:
-
 ====================
 Upgrading JupyterHub
 ====================

docs/source/api/index.rst

@@ -17,11 +17,6 @@ information on:
 - making an API request programmatically using the requests library
 - learning more about JupyterHub's API
 
-The same JupyterHub API spec, as found here, is available in an interactive form
-`here (on swagger's petstore) <https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/jupyterhub/jupyterhub/HEAD/docs/rest-api.yml#!/default>`__.
-The `OpenAPI Initiative`_ (fka Swagger™) is a project used to describe
-and document RESTful APIs.
-
 JupyterHub API Reference:
 
 .. toctree::

docs/source/conf.py

@@ -130,6 +130,30 @@ html_static_path = ['_static']
 
 htmlhelp_basename = 'JupyterHubdoc'
 
+html_theme_options = {
+    "icon_links": [
+        {
+            "name": "GitHub",
+            "url": "https://github.com/jupyterhub/jupyterhub",
+            "icon": "fab fa-github-square",
+        },
+        {
+            "name": "Discourse",
+            "url": "https://discourse.jupyter.org/c/jupyterhub/10",
+            "icon": "fab fa-discourse",
+        },
+    ],
+    "use_edit_page_button": True,
+    "navbar_align": "left",
+}
+
+html_context = {
+    "github_user": "jupyterhub",
+    "github_repo": "jupyterhub",
+    "github_version": "main",
+    "doc_path": "docs",
+}
+
 # -- Options for LaTeX output ---------------------------------------------
 
 latex_elements = {
@@ -205,7 +229,10 @@ epub_exclude_files = ['search.html']
 
 # -- Intersphinx ----------------------------------------------------------
 
-intersphinx_mapping = {'https://docs.python.org/3/': None}
+intersphinx_mapping = {
+    'python': ('https://docs.python.org/3/', None),
+    'tornado': ('https://www.tornadoweb.org/en/stable/', None),
+}
 
 # -- Read The Docs --------------------------------------------------------
 
@@ -215,7 +242,7 @@ if on_rtd:
     # build both metrics and rest-api, since RTD doesn't run make
     from subprocess import check_call as sh
 
-    sh(['make', 'metrics', 'rest-api', 'scopes'], cwd=docs)
+    sh(['make', 'metrics', 'scopes'], cwd=docs)
 
 # -- Spell checking -------------------------------------------------------
 

docs/source/getting-started/authenticators-users-basics.md

@@ -16,6 +16,10 @@ c.Authenticator.allowed_users = {'mal', 'zoe', 'inara', 'kaylee'}
 Users in the `allowed_users` set are added to the Hub database when the Hub is
 started.
 
+```{warning}
+If this configuration value is not set, then **all authenticated users will be allowed into your hub**.
+```
+
 ## Configure admins (`admin_users`)
 
 ```{note}

docs/source/index.rst

@@ -43,7 +43,7 @@ JupyterHub performs the following functions:
   notebook servers
 
 For convenient administration of the Hub, its users, and services,
-JupyterHub also provides a `REST API`_.
+JupyterHub also provides a :doc:`REST API <reference/rest-api>`.
 
 The JupyterHub team and Project Jupyter value our community, and JupyterHub
 follows the Jupyter `Community Guides <https://jupyter.readthedocs.io/en/latest/community/content-community.html>`_.
@@ -155,4 +155,3 @@ Questions? Suggestions?
 
 .. _JupyterHub: https://github.com/jupyterhub/jupyterhub
 .. _Jupyter notebook: https://jupyter-notebook.readthedocs.io/en/latest/
-.. _REST API: https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/jupyterhub/jupyterhub/HEAD/docs/rest-api.yml#!/default

docs/source/quickstart.md

@@ -5,8 +5,8 @@
 Before installing JupyterHub, you will need:
 
 - a Linux/Unix based system
-- [Python](https://www.python.org/downloads/) 3.5 or greater. An understanding
-  of using [`pip`](https://pip.pypa.io/en/stable/) or
+- [Python](https://www.python.org/downloads/) 3.6 or greater. An understanding
+  of using [`pip`](https://pip.pypa.io) or
   [`conda`](https://conda.io/docs/get-started.html) for
   installing Python packages is helpful.
 - [nodejs/npm](https://www.npmjs.com/). [Install nodejs/npm](https://docs.npmjs.com/getting-started/installing-node),
@@ -20,11 +20,11 @@ Before installing JupyterHub, you will need:
     For example, install it on Linux (Debian/Ubuntu) using:
 
     ```
-    sudo apt-get install npm nodejs-legacy
+    sudo apt-get install nodejs npm
     ```
 
-    The `nodejs-legacy` package installs the `node` executable and is currently
-    required for npm to work on Debian/Ubuntu.
+    [nodesource][] is a great resource to get more recent versions of the nodejs runtime,
+    if your system package manager only has an old version of Node.js (e.g. 10 or older).
 
 - A [pluggable authentication module (PAM)](https://en.wikipedia.org/wiki/Pluggable_authentication_module)
   to use the [default Authenticator](./getting-started/authenticators-users-basics.md).
@@ -33,11 +33,17 @@ Before installing JupyterHub, you will need:
 - TLS certificate and key for HTTPS communication
 - Domain name
 
+[nodesource]: https://github.com/nodesource/distributions#table-of-contents
+
 Before running the single-user notebook servers (which may be on the same
 system as the Hub or not), you will need:
 
-- [Jupyter Notebook](https://jupyter.readthedocs.io/en/latest/install.html)
-  version 4 or greater
+- [JupyterLab][] version 3 or greater,
+  or [Jupyter Notebook][]
+  4 or greater.
+
+[jupyterlab]: https://jupyterlab.readthedocs.io
+[jupyter notebook]: https://jupyter.readthedocs.io/en/latest/install.html
 
 ## Installation
 
@@ -48,14 +54,14 @@ JupyterHub can be installed with `pip` (and the proxy with `npm`) or `conda`:
 ```bash
 python3 -m pip install jupyterhub
 npm install -g configurable-http-proxy
-python3 -m pip install notebook  # needed if running the notebook servers locally
+python3 -m pip install jupyterlab notebook  # needed if running the notebook servers in the same environment
 ```
 
 **conda** (one command installs jupyterhub and proxy):
 
 ```bash
 conda install -c conda-forge jupyterhub  # installs jupyterhub and proxy
-conda install notebook  # needed if running the notebook servers locally
+conda install jupyterlab notebook  # needed if running the notebook servers in the same environment
 ```
 
 Test your installation. If installed, these commands should return the packages'
@@ -74,7 +80,7 @@ To start the Hub server, run the command:
 jupyterhub
 ```
 
-Visit `https://localhost:8000` in your browser, and sign in with your unix
+Visit `http://localhost:8000` in your browser, and sign in with your unix
 credentials.
 
 To **allow multiple users to sign in** to the Hub server, you must start

docs/source/rbac/generate-scope-table.py

@@ -1,14 +1,33 @@
+"""
+This script updates two files with the RBAC scope descriptions found in
+`scopes.py`.
+
+The files are:
+
+    1. scope-table.md
+
+       This file is git ignored and referenced by the documentation.
+
+    2. rest-api.yml
+
+       This file is JupyterHub's REST API schema. Both a version and the RBAC
+       scopes descriptions are updated in it.
+"""
 import os
 from collections import defaultdict
 from pathlib import Path
+from subprocess import run
 
 from pytablewriter import MarkdownTableWriter
 from ruamel.yaml import YAML
 
+from jupyterhub import __version__
 from jupyterhub.scopes import scope_definitions
 
 HERE = os.path.abspath(os.path.dirname(__file__))
-PARENT = Path(HERE).parent.parent.absolute()
+DOCS = Path(HERE).parent.parent.absolute()
+REST_API_YAML = DOCS.joinpath("source", "_static", "rest-api.yml")
+SCOPE_TABLE_MD = Path(HERE).joinpath("scope-table.md")
 
 
 class ScopeTableGenerator:
@@ -80,8 +99,9 @@ class ScopeTableGenerator:
         return table_rows
 
     def write_table(self):
-        """Generates the scope table in markdown format and writes it into `scope-table.md`"""
-        filename = f"{HERE}/scope-table.md"
+        """Generates the RBAC scopes reference documentation as a markdown table
+        and writes it to the .gitignored `scope-table.md`."""
+        filename = SCOPE_TABLE_MD
         table_name = ""
         headers = ["Scope", "Grants permission to:"]
         values = self._parse_scopes()
@@ -97,23 +117,38 @@ class ScopeTableGenerator:
         )
 
     def write_api(self):
-        """Generates the API description in markdown format and writes it into `rest-api.yml`"""
-        filename = f"{PARENT}/rest-api.yml"
-        yaml = YAML(typ='rt')
+        """Loads `rest-api.yml` and writes it back with a dynamically set
+        JupyterHub version field and list of RBAC scopes descriptions from
+        `scopes.py`."""
+        filename = REST_API_YAML
+
+        yaml = YAML(typ="rt")
         yaml.preserve_quotes = True
+        yaml.indent(mapping=2, offset=2, sequence=4)
+
         scope_dict = {}
-        with open(filename, 'r+') as f:
+        with open(filename) as f:
             content = yaml.load(f.read())
-            f.seek(0)
-            for scope in self.scopes:
-                description = self.scopes[scope]['description']
-                doc_description = self.scopes[scope].get('doc_description', '')
-                if doc_description:
-                    description = doc_description
-                scope_dict[scope] = description
-            content['securityDefinitions']['oauth2']['scopes'] = scope_dict
+
+        content["info"]["version"] = __version__
+        for scope in self.scopes:
+            description = self.scopes[scope]['description']
+            doc_description = self.scopes[scope].get('doc_description', '')
+            if doc_description:
+                description = doc_description
+            scope_dict[scope] = description
+        content['components']['securitySchemes']['oauth2']['flows'][
+            'authorizationCode'
+        ]['scopes'] = scope_dict
+
+        with open(filename, 'w') as f:
             yaml.dump(content, f)
-            f.truncate()
+
+        run(
+            ['pre-commit', 'run', 'prettier', '--files', filename],
+            cwd=HERE,
+            check=False,
+        )
 
 
 def main():

docs/source/rbac/roles.md

@@ -123,13 +123,13 @@ has,
 define the `server` role.
 
 To restore the JupyterHub 1.x behavior of servers being able to do anything their owners can do,
-use the scope `all`:
+use the scope `inherit` (for 'inheriting' the owner's permissions):
 
 ```python
 c.JupyterHub.load_roles = [
  {
    'name': 'server',
-   'scopes': ['all'],
+   'scopes': ['inherit'],
  }
 ]
 ```

docs/source/reference/api-only.md

@@ -0,0 +1,128 @@
+(api-only)=
+
+# Deploying JupyterHub in "API only mode"
+
+As a service for deploying and managing Jupyter servers for users, JupyterHub
+exposes this functionality _primarily_ via a [REST API](rest).
+For convenience, JupyterHub also ships with a _basic_ web UI built using that REST API.
+The basic web UI enables users to click a button to quickly start and stop their servers,
+and it lets admins perform some basic user and server management tasks.
+
+The REST API has always provided additional functionality beyond what is available in the basic web UI.
+Similarly, we avoid implementing UI functionality that is also not available via the API.
+With JupyterHub 2.0, the basic web UI will **always** be composed using the REST API.
+In other words, no UI pages should rely on information not available via the REST API.
+Previously, some admin UI functionality could only be achieved via admin pages,
+such as paginated requests.
+
+## Limited UI customization via templates
+
+The JupyterHub UI is customizable via extensible HTML [templates](templates),
+but this has some limited scope to what can be customized.
+Adding some content and messages to existing pages is well supported,
+but changing the page flow and what pages are available are beyond the scope of what is customizable.
+
+## Rich UI customization with REST API based apps
+
+Increasingly, JupyterHub is used purely as an API for managing Jupyter servers
+for other Jupyter-based applications that might want to present a different user experience.
+If you want a fully customized user experience,
+you can now disable the Hub UI and use your own pages together with the JupyterHub REST API
+to build your own web application to serve your users,
+relying on the Hub only as an API for managing users and servers.
+
+One example of such an application is [BinderHub][], which powers https://mybinder.org,
+and motivates many of these changes.
+
+BinderHub is distinct from a traditional JupyterHub deployment
+because it uses temporary users created for each launch.
+Instead of presenting a login page,
+users are presented with a form to specify what environment they would like to launch:
+
+![Binder launch form](../images/binderhub-form.png)
+
+When a launch is requested:
+
+1. an image is built, if necessary
+2. a temporary user is created,
+3. a server is launched for that user, and
+4. when running, users are redirected to an already running server with an auth token in the URL
+5. after the session is over, the user is deleted
+
+This means that a lot of JupyterHub's UI flow doesn't make sense:
+
+- there is no way for users to login
+- the human user doesn't map onto a JupyterHub `User` in a meaningful way
+- when a server isn't running, there isn't a 'restart your server' action available because the user has been deleted
+- users do not have any access to any Hub functionality, so presenting pages for those features would be confusing
+
+BinderHub is one of the motivating use cases for JupyterHub supporting being used _only_ via its API.
+We'll use BinderHub here as an example of various configuration options.
+
+[binderhub]: https://binderhub.readthedocs.io
+
+## Disabling Hub UI
+
+`c.JupyterHub.hub_routespec` is a configuration option to specify which URL prefix should be routed to the Hub.
+The default is `/` which means that the Hub will receive all requests not already specified to be routed somewhere else.
+
+There are three values that are most logical for `hub_routespec`:
+
+- `/` - this is the default, and used in most deployments.
+  It is also the only option prior to JupyterHub 1.4.
+- `/hub/` - this serves only Hub pages, both UI and API
+- `/hub/api` - this serves _only the Hub API_, so all Hub UI is disabled,
+  aside from the OAuth confirmation page, if used.
+
+If you choose a hub routespec other than `/`,
+the main JupyterHub feature you will lose is the automatic handling of requests for `/user/:username`
+when the requested server is not running.
+
+JupyterHub's handling of this request shows this page,
+telling you that the server is not running,
+with a button to launch it again:
+
+![screenshot of hub page for server not running](../images/server-not-running.png)
+
+If you set `hub_routespec` to something other than `/`,
+it is likely that you also want to register another destination for `/` to handle requests to not-running servers.
+If you don't, you will see a default 404 page from the proxy:
+
+![screenshot of CHP default 404](../images/chp-404.png)
+
+For mybinder.org, the default "start my server" page doesn't make sense,
+because when a server is gone, there is no restart action.
+Instead, we provide hints about how to get back to a link to start a _new_ server:
+
+![screenshot of mybinder.org 404](../images/binder-404.png)
+
+To achieve this, mybinder.org registers a route for `/` that goes to a custom endpoint
+that runs nginx and only serves this static HTML error page.
+This is set with
+
+```python
+c.Proxy.extra_routes = {
+    "/": "http://custom-404-entpoint/",
+}
+```
+
+You may want to use an alternate behavior, such as redirecting to a landing page,
+or taking some other action based on the requested page.
+
+If you use `c.JupyterHub.hub_routespec = "/hub/"`,
+then all the Hub pages will be available,
+and only this default-page-404 issue will come up.
+
+If you use `c.JupyterHub.hub_routespec = "/hub/api/"`,
+then only the Hub _API_ will be available,
+and all UI will be up to you.
+mybinder.org takes this last option,
+because none of the Hub UI pages really make sense.
+Binder users don't have any reason to know or care that JupyterHub happens
+to be an implementation detail of how their environment is managed.
+Seeing Hub error pages and messages in that situation is more likely to be confusing than helpful.
+
+:::{versionadded} 1.4
+
+`c.JupyterHub.hub_routespec` and `c.Proxy.extra_routes` are new in JupyterHub 1.4.
+:::

docs/source/reference/config-proxy.md

@@ -219,7 +219,7 @@ In case of the need to run the jupyterhub under /jhub/ or other location please
 httpd.conf amendments:
 
 ```bash
- RewriteRule /jhub/(.*) ws://127.0.0.1:8000/jhub/$1 [NE.P,L]
+ RewriteRule /jhub/(.*) ws://127.0.0.1:8000/jhub/$1 [NE,P,L]
  RewriteRule /jhub/(.*) http://127.0.0.1:8000/jhub/$1 [NE,P,L]
 
  ProxyPass /jhub/ http://127.0.0.1:8000/jhub/

docs/source/reference/config-user-env.md

@@ -76,13 +76,26 @@ c.InteractiveShellApp.extensions.append("cython")
 
 ### Example: Enable a Jupyter notebook configuration setting for all users
 
+:::{note}
+These examples configure the Jupyter ServerApp,
+which is used by JupyterLab, the default in JupyterHub 2.0.
+
+If you are using the classing Jupyter Notebook server,
+the same things should work,
+with the following substitutions:
+
+- Where you see `jupyter_server_config`, use `jupyter_notebook_config`
+- Where you see `NotebookApp`, use `ServerApp`
+
+:::
+
 To enable Jupyter notebook's internal idle-shutdown behavior (requires
-notebook ≥ 5.4), set the following in the `/etc/jupyter/jupyter_notebook_config.py`
+notebook ≥ 5.4), set the following in the `/etc/jupyter/jupyter_server_config.py`
 file:
 
 ```python
 # shutdown the server after no activity for an hour
-c.NotebookApp.shutdown_no_activity_timeout = 60 * 60
+c.ServerApp.shutdown_no_activity_timeout = 60 * 60
 # shutdown kernels after no activity for 20 minutes
 c.MappingKernelManager.cull_idle_timeout = 20 * 60
 # check for idle kernels every two minutes
@@ -112,8 +125,8 @@ Assuming I have a Python 2 and Python 3 environment that I want to make
 sure are available, I can install their specs system-wide (in /usr/local) with:
 
 ```bash
-/path/to/python3 -m IPython kernel install --prefix=/usr/local
-/path/to/python2 -m IPython kernel install --prefix=/usr/local
+/path/to/python3 -m ipykernel install --prefix=/usr/local
+/path/to/python2 -m ipykernel install --prefix=/usr/local
 ```
 
 ## Multi-user hosts vs. Containers
@@ -176,12 +189,40 @@ The number of named servers per user can be limited by setting
 c.JupyterHub.named_server_limit_per_user = 5
 ```
 
-## Switching to Jupyter Server
+(classic-notebook-ui)=
 
-[Jupyter Server](https://jupyter-server.readthedocs.io/en/latest/) is a new Tornado Server backend for Jupyter web applications (e.g. JupyterLab 3.0 uses this package as its default backend).
+## Switching back to classic notebook
 
-By default, the single-user notebook server uses the (old) `NotebookApp` from the [notebook](https://github.com/jupyter/notebook) package. You can switch to using Jupyter Server's `ServerApp` backend (this will likely become the default in future releases) by setting the `JUPYTERHUB_SINGLEUSER_APP` environment variable to:
+By default the single-user server launches JupyterLab,
+which is based on [Jupyter Server][].
+This is the default server when running JupyterHub ≥ 2.0.
+You can switch to using the legacy Jupyter Notebook server by setting the `JUPYTERHUB_SINGLEUSER_APP` environment variable
+(in the single-user environment) to:
+
+```bash
+export JUPYTERHUB_SINGLEUSER_APP='notebook.notebookapp.NotebookApp'
+```
+
+[jupyter server]: https://jupyter-server.readthedocs.io
+[jupyter notebook]: https://jupyter-notebook.readthedocs.io
+
+:::{versionchanged} 2.0
+JupyterLab is now the default singleuser UI, if available,
+which is based on the [Jupyter Server][],
+no longer the legacy [Jupyter Notebook][] server.
+JupyterHub prior to 2.0 launched the legacy notebook server (`jupyter notebook`),
+and Jupyter server could be selected by specifying
+
+```python
+# jupyterhub_config.py
+c.Spawner.cmd = ["jupyter-labhub"]
+```
+
+or for an otherwise customized Jupyter Server app,
+set the environment variable:
 
 ```bash
 export JUPYTERHUB_SINGLEUSER_APP='jupyter_server.serverapp.ServerApp'
 ```
+
+:::

docs/source/reference/index.rst

@@ -16,10 +16,12 @@ what happens under-the-hood when you deploy and configure your JupyterHub.
    proxy
    separate-proxy
    rest
+   rest-api
    server-api
    monitoring
    database
    templates
+   api-only
    ../events/index
    config-user-env
    config-examples

docs/source/reference/rest-api.md

@@ -0,0 +1,27 @@
+# JupyterHub REST API
+
+Below is an interactive view of JupyterHub's OpenAPI specification.
+
+<!-- client-rendered openapi UI copied from FastAPI -->
+
+<link type="text/css" rel="stylesheet" href="https://cdn.jsdelivr.net/npm/swagger-ui-dist@3/swagger-ui.css">
+<script src="https://cdn.jsdelivr.net/npm/swagger-ui-dist@4.1/swagger-ui-bundle.js"></script>
+<!-- `SwaggerUIBundle` is now available on the page -->
+
+<!-- render the ui here -->
+<div id="openapi-ui"></div>
+
+<script>
+const ui = SwaggerUIBundle({
+  url: '../_static/rest-api.yml',
+  dom_id: '#openapi-ui',
+  presets: [
+    SwaggerUIBundle.presets.apis,
+    SwaggerUIBundle.SwaggerUIStandalonePreset
+  ],
+  layout: "BaseLayout",
+  deepLinking: true,
+  showExtensions: true,
+  showCommonExtensions: true,
+});
+</script>

docs/source/reference/rest-api.rst

@@ -1,14 +0,0 @@
-:orphan:
-
-===================
-JupyterHub REST API
-===================
-
-.. this doc exists as a resolvable link target
-.. which _static files are not
-
-.. meta::
-    :http-equiv=refresh: 0;url=../_static/rest-api/index.html
-
-The rest API docs are `here <../_static/rest-api/index.html>`_
-if you are not redirected automatically.

docs/source/reference/rest.md

@@ -1,3 +1,5 @@
+(rest-api)=
+
 # Using JupyterHub's REST API
 
 This section will give you information on:
@@ -302,12 +304,8 @@ or kubernetes pods.
 
 ## Learn more about the API
 
-You can see the full [JupyterHub REST API][] for details. This REST API Spec can
-be viewed in a more [interactive style on swagger's petstore][].
-Both resources contain the same information and differ only in its display.
-Note: The Swagger specification is being renamed the [OpenAPI Initiative][].
+You can see the full [JupyterHub REST API][] for details.
 
-[interactive style on swagger's petstore]: https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/jupyterhub/jupyterhub/HEAD/docs/rest-api.yml#!/default
 [openapi initiative]: https://www.openapis.org/
 [jupyterhub rest api]: ./rest-api
 [jupyter notebook rest api]: https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/jupyter/notebook/HEAD/notebook/services/api/api.yaml

docs/source/reference/services.md

@@ -1,17 +1,5 @@
 # Services
 
-With version 0.7, JupyterHub adds support for **Services**.
-
-This section provides the following information about Services:
-
-- [Definition of a Service](#definition-of-a-service)
-- [Properties of a Service](#properties-of-a-service)
-- [Hub-Managed Services](#hub-managed-services)
-- [Launching a Hub-Managed Service](#launching-a-hub-managed-service)
-- [Externally-Managed Services](#externally-managed-services)
-- [Writing your own Services](#writing-your-own-services)
-- [Hub Authentication and Services](#hub-authentication-and-services)
-
 ## Definition of a Service
 
 When working with JupyterHub, a **Service** is defined as a process that interacts
@@ -115,6 +103,8 @@ parameters, which describe the environment needed to start the Service process:
 
 The Hub will pass the following environment variables to launch the Service:
 
+(service-env)=
+
 ```bash
 JUPYTERHUB_SERVICE_NAME:   The name of the service
 JUPYTERHUB_API_TOKEN:      API token assigned to the service
@@ -196,18 +186,38 @@ extra slash you might get unexpected behavior. For example if your service has a
 
 ## Hub Authentication and Services
 
-JupyterHub 0.7 introduces some utilities for using the Hub's authentication
-mechanism to govern access to your service. When a user logs into JupyterHub,
-the Hub sets a **cookie (`jupyterhub-services`)**. The service can use this
-cookie to authenticate requests.
+JupyterHub provides some utilities for using the Hub's authentication
+mechanism to govern access to your service.
 
-JupyterHub ships with a reference implementation of Hub authentication that
+Requests to all JupyterHub services are made with OAuth tokens.
+These can either be requests with a token in the `Authorization` header,
+or url parameter `?token=...`,
+or browser requests which must complete the OAuth authorization code flow,
+which results in a token that should be persisted for future requests
+(persistence is up to the service,
+but an encrypted cookie confined to the service path is appropriate,
+and provided by default).
+
+:::{versionchanged} 2.0
+The shared `jupyterhub-services` cookie is removed.
+OAuth must be used to authenticate browser requests with services.
+:::
+
+JupyterHub includes a reference implementation of Hub authentication that
 can be used by services. You may go beyond this reference implementation and
 create custom hub-authenticating clients and services. We describe the process
 below.
 
 The reference, or base, implementation is the [`HubAuth`][hubauth] class,
-which implements the requests to the Hub.
+which implements the API requests to the Hub that resolve a token to a User model.
+
+There are two levels of authentication with the Hub:
+
+- [`HubAuth`][hubauth] - the most basic authentication,
+  for services that should only accept API requests authorized with a token.
+
+- [`HubOAuth`][huboauth] - For services that should use oauth to authenticate with the Hub.
+  This should be used for any service that serves pages that should be visited with a browser.
 
 To use HubAuth, you must set the `.api_token`, either programmatically when constructing the class,
 or via the `JUPYTERHUB_API_TOKEN` environment variable.
@@ -250,18 +260,17 @@ for more details.
 ### Authenticating tornado services with JupyterHub
 
 Since most Jupyter services are written with tornado,
-we include a mixin class, [`HubAuthenticated`][hubauthenticated],
+we include a mixin class, [`HubOAuthenticated`][huboauthenticated],
 for quickly authenticating your own tornado services with JupyterHub.
 
-Tornado's `@web.authenticated` method calls a Handler's `.get_current_user`
-method to identify the user. Mixing in `HubAuthenticated` defines
-`get_current_user` to use HubAuth. If you want to configure the HubAuth
-instance beyond the default, you'll want to define an `initialize` method,
+Tornado's {py:func}`~.tornado.web.authenticated` decorator calls a Handler's {py:meth}`~.tornado.web.RequestHandler.get_current_user`
+method to identify the user. Mixing in {class}`.HubAuthenticated` defines
+{meth}`~.HubAuthenticated.get_current_user` to use HubAuth. If you want to configure the HubAuth
+instance beyond the default, you'll want to define an {py:meth}`~.tornado.web.RequestHandler.initialize` method,
 such as:
 
 ```python
-class MyHandler(HubAuthenticated, web.RequestHandler):
-    hub_users = {'inara', 'mal'}
+class MyHandler(HubOAuthenticated, web.RequestHandler):
 
     def initialize(self, hub_auth):
         self.hub_auth = hub_auth
@@ -271,14 +280,21 @@ class MyHandler(HubAuthenticated, web.RequestHandler):
         ...
 ```
 
-The HubAuth will automatically load the desired configuration from the Service
-environment variables.
+The HubAuth class will automatically load the desired configuration from the Service
+[environment variables](service-env).
 
-If you want to limit user access, you can specify allowed users through either the
-`.hub_users` attribute or `.hub_groups`. These are sets that check against the
-username and user group list, respectively. If a user matches neither the user
-list nor the group list, they will not be allowed access. If both are left
-undefined, then any user will be allowed.
+:::{versionchanged} 2.0
+
+Access scopes are used to govern access to services.
+Prior to 2.0,
+sets of users and groups could be used to grant access
+by defining `.hub_groups` or `.hub_users` on the authenticated handler.
+These are ignored if the 2.0 `.hub_scopes` is defined.
+:::
+
+:::{seealso}
+{meth}`.HubAuth.check_scopes`
+:::
 
 ### Implementing your own Authentication with JupyterHub
 
@@ -328,7 +344,7 @@ and taking note of the following process:
    ```python
    {
      "name": "inara",
-     # groups  may be omitted, depending on permissions
+     # groups may be omitted, depending on permissions
      "groups": ["serenity", "guild"],
      # scopes is new in JupyterHub 2.0
      "scopes": [
@@ -354,9 +370,11 @@ section on securing the notebook viewer.
 
 [requests]: http://docs.python-requests.org/en/master/
 [services_auth]: ../api/services.auth.html
+[hubauth]: ../api/services.auth.html#jupyterhub.services.auth.HubAuth
 [huboauth]: ../api/services.auth.html#jupyterhub.services.auth.HubOAuth
 [hubauth.user_for_token]: ../api/services.auth.html#jupyterhub.services.auth.HubAuth.user_for_token
 [hubauthenticated]: ../api/services.auth.html#jupyterhub.services.auth.HubAuthenticated
+[huboauthenticated]: ../api/services.auth.html#jupyterhub.services.auth.HubOAuthenticated
 [nbviewer example]: https://github.com/jupyter/nbviewer#securing-the-notebook-viewer
 [fastapi example]: https://github.com/jupyterhub/jupyterhub/tree/HEAD/examples/service-fastapi
 [fastapi]: https://fastapi.tiangolo.com

docs/source/reference/spawners.md

@@ -108,6 +108,16 @@ class MySpawner(Spawner):
         return url
 ```
 
+#### Exception handling
+
+When `Spawner.start` raises an Exception, a message can be passed on to the user via the exception via a `.jupyterhub_html_message` or `.jupyterhub_message` attribute.
+
+When the Exception has a `.jupyterhub_html_message` attribute, it will be rendered as HTML to the user.
+
+Alternatively `.jupyterhub_message` is rendered as unformatted text.
+
+If both attributes are not present, the Exception will be shown to the user as unformatted text.
+
 ### Spawner.poll
 
 `Spawner.poll` should check if the spawner is still running.

docs/test_docs.py

@@ -0,0 +1,46 @@
+import sys
+from pathlib import Path
+from subprocess import run
+
+from ruamel.yaml import YAML
+
+yaml = YAML(typ="safe")
+
+here = Path(__file__).absolute().parent
+root = here.parent
+
+
+def test_rest_api_version_is_updated():
+    """Checks that the version in JupyterHub's REST API definition file
+    (rest-api.yml) is matching the JupyterHub version."""
+    version_py = root.joinpath("jupyterhub", "_version.py")
+    rest_api_yaml = root.joinpath("docs", "source", "_static", "rest-api.yml")
+    ns = {}
+    with version_py.open() as f:
+        exec(f.read(), {}, ns)
+    jupyterhub_version = ns["__version__"]
+
+    with rest_api_yaml.open() as f:
+        rest_api = yaml.load(f)
+        rest_api_version = rest_api["info"]["version"]
+
+    assert jupyterhub_version == rest_api_version
+
+
+def test_rest_api_rbac_scope_descriptions_are_updated():
+    """Checks that the RBAC scope descriptions in JupyterHub's REST API
+    definition file (rest-api.yml) as can be updated by generate-scope-table.py
+    matches what is committed."""
+    run([sys.executable, "source/rbac/generate-scope-table.py"], cwd=here, check=True)
+    run(
+        [
+            "git",
+            "--no-pager",
+            "diff",
+            "--color=always",
+            "--exit-code",
+            str(here.joinpath("source", "_static", "rest-api.yml")),
+        ],
+        cwd=here,
+        check=True,
+    )

examples/server-api/start-stop-server.py

@@ -29,7 +29,7 @@ def get_token():
     token_file = here.joinpath("service-token")
     log.info(f"Loading token from {token_file}")
     with token_file.open("r") as f:
-        token = f.read()
+        token = f.read().strip()
     return token
 
 

examples/service-whoami/README.md

@@ -8,59 +8,72 @@ There is an implementation each of api-token-based `HubAuthenticated` and OAuth-
 
 1.  Launch JupyterHub and the `whoami` services with
 
-        jupyterhub --ip=127.0.0.1
+        jupyterhub
 
 2.  Visit http://127.0.0.1:8000/services/whoami-oauth
 
-After logging in with your local-system credentials, you should see a JSON dump of your user info:
+After logging in with any username and password, you should see a JSON dump of your user info:
 
 ```json
 {
   "admin": false,
-  "last_activity": "2016-05-27T14:05:18.016372",
+  "groups": [],
+  "kind": "user",
   "name": "queequeg",
-  "pending": null,
-  "server": "/user/queequeg"
+  "scopes": ["access:services!service=whoami-oauth"],
+  "session_id": "5a2164273a7346728873bcc2e3c26415"
 }
 ```
 
+What is contained in the model will depend on the permissions
+requested in the `oauth_roles` configuration of the service `whoami-oauth` service.
+The default is the minimum required for identification and access to the service,
+which will provide the username and current scopes.
+
 The `whoami-api` service powered by the base `HubAuthenticated` class only supports token-authenticated API requests,
-not browser visits, because it does not implement OAuth. Visit it by requesting an api token from the tokens page,
+not browser visits, because it does not implement OAuth. Visit it by requesting an api token from the tokens page (`/hub/token`),
 and making a direct request:
 
 ```bash
-$ curl -H "Authorization: token 8630bbd8ef064c48b22c7f122f0cd8ad" http://127.0.0.1:8000/services/whoami-api/ | jq .
+token="d584cbc5bba2430fb153aadb305029b4"
+curl -H "Authorization: token $token" http://127.0.0.1:8000/services/whoami-api/ | jq .
+```
+
+```json
 {
   "admin": false,
-  "created": "2021-05-21T09:47:41.299400Z",
+  "created": "2021-12-20T09:49:37.258427Z",
   "groups": [],
   "kind": "user",
-  "last_activity": "2021-05-21T09:49:08.290745Z",
-  "name": "test",
+  "last_activity": "2021-12-20T10:07:31.298056Z",
+  "name": "queequeg",
   "pending": null,
-  "roles": [
-    "user"
-  ],
+  "roles": ["user"],
   "scopes": [
+    "access:servers!user=queequeg",
     "access:services",
-    "access:servers!user=test",
-    "read:users!user=test",
-    "read:users:activity!user=test",
-    "read:users:groups!user=test",
-    "read:users:name!user=test",
-    "read:servers!user=test",
-    "read:tokens!user=test",
-    "users!user=test",
-    "users:activity!user=test",
-    "users:groups!user=test",
-    "users:name!user=test",
-    "servers!user=test",
-    "tokens!user=test"
+    "delete:servers!user=queequeg",
+    "read:servers!user=queequeg",
+    "read:tokens!user=queequeg",
+    "read:users!user=queequeg",
+    "read:users:activity!user=queequeg",
+    "read:users:groups!user=queequeg",
+    "read:users:name!user=queequeg",
+    "servers!user=queequeg",
+    "tokens!user=queequeg",
+    "users:activity!user=queequeg"
   ],
-  "server": null
+  "server": null,
+  "servers": {},
+  "session_id": null
 }
 ```
 
+The above is a more complete user model than the `whoami-oauth` example, because
+the token was issued with the default `token` role,
+which has the `inherit` metascope,
+meaning the token has access to everything the tokens owner has access to.
+
 This relies on the Hub starting the whoami services, via config (see [jupyterhub_config.py](./jupyterhub_config.py)).
 
 To govern access to the services, create **roles** with the scope `access:services!service=$service-name`,

examples/service-whoami/jupyterhub_config.py

@@ -10,7 +10,15 @@ c.JupyterHub.services = [
         'name': 'whoami-oauth',
         'url': 'http://127.0.0.1:10102',
         'command': [sys.executable, './whoami-oauth.py'],
-        'oauth_roles': ['user'],
+        # the default oauth roles is minimal,
+        # only requesting access to the service,
+        # and identification by name,
+        # nothing more.
+        # Specifying 'oauth_roles' as a list of role names
+        # allows requesting more information about users,
+        # or the ability to take actions on users' behalf, as required.
+        # The default 'token' role has the full permissions of its owner:
+        # 'oauth_roles': ['token'],
     },
 ]
 

jsx/package.json

@@ -31,6 +31,9 @@
     "@babel/core": "^7.12.3",
     "@babel/preset-env": "^7.12.11",
     "@babel/preset-react": "^7.12.10",
+    "@testing-library/jest-dom": "^5.15.1",
+    "@testing-library/react": "^12.1.2",
+    "@testing-library/user-event": "^13.5.0",
     "babel-loader": "^8.2.1",
     "bootstrap": "^4.5.3",
     "css-loader": "^5.0.1",
@@ -54,7 +57,7 @@
     "webpack-dev-server": "^3.11.0"
   },
   "devDependencies": {
-    "@wojtekmaj/enzyme-adapter-react-17": "^0.4.1",
+    "@wojtekmaj/enzyme-adapter-react-17": "^0.6.5",
     "babel-jest": "^26.6.3",
     "enzyme": "^3.11.0",
     "eslint": "^7.18.0",

jsx/src/components/AddUser/AddUser.jsx

@@ -25,11 +25,20 @@ const AddUser = (props) => {
 
   return (
     <>
-      <div className="container">
+      <div className="container" data-testid="container">
         {errorAlert != null ? (
           <div className="row">
             <div className="col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
-              <div className="alert alert-danger">{errorAlert}</div>
+              <div className="alert alert-danger">
+                {errorAlert}
+                <button
+                  type="button"
+                  className="close"
+                  onClick={() => setErrorAlert(null)}
+                >
+                  <span>&times;</span>
+                </button>
+              </div>
             </div>
           </div>
         ) : (
@@ -49,6 +58,7 @@ const AddUser = (props) => {
                       id="add-user-textarea"
                       rows="3"
                       placeholder="usernames separated by line"
+                      data-testid="user-textarea"
                       onBlur={(e) => {
                         let split_users = e.target.value.split("\n");
                         setUsers(split_users);
@@ -57,10 +67,11 @@ const AddUser = (props) => {
                     <br></br>
                     <input
                       className="form-check-input"
+                      data-testid="check"
                       type="checkbox"
-                      value=""
                       id="admin-check"
-                      onChange={(e) => setAdmin(e.target.checked)}
+                      checked={admin}
+                      onChange={() => setAdmin(!admin)}
                     />
                     <span> </span>
                     <label className="form-check-label">Admin</label>
@@ -74,6 +85,7 @@ const AddUser = (props) => {
                 <span> </span>
                 <button
                   id="submit"
+                  data-testid="submit"
                   className="btn btn-primary"
                   onClick={() => {
                     let filtered_users = users.filter(
@@ -92,14 +104,16 @@ const AddUser = (props) => {
                           ? updateUsers(0, limit)
                               .then((data) => dispatchPageChange(data, 0))
                               .then(() => history.push("/"))
-                              .catch((err) => console.log(err))
+                              .catch(() =>
+                                setErrorAlert(`Failed to update users.`)
+                              )
                           : setErrorAlert(
-                              `[${data.status}] Failed to create user. ${
+                              `Failed to create user. ${
                                 data.status == 409 ? "User already exists." : ""
                               }`
                             )
                       )
-                      .catch((err) => console.log(err));
+                      .catch(() => setErrorAlert(`Failed to create user.`));
                   }}
                 >
                   Add Users

jsx/src/components/AddUser/AddUser.test.js

@@ -1,12 +1,15 @@
 import React from "react";
-import Enzyme, { mount } from "enzyme";
-import AddUser from "./AddUser";
-import Adapter from "@wojtekmaj/enzyme-adapter-react-17";
+import "@testing-library/jest-dom";
+import { act } from "react-dom/test-utils";
+import { render, screen, fireEvent } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
 import { Provider, useDispatch, useSelector } from "react-redux";
 import { createStore } from "redux";
 import { HashRouter } from "react-router-dom";
+// eslint-disable-next-line
+import regeneratorRuntime from "regenerator-runtime";
 
-Enzyme.configure({ adapter: new Adapter() });
+import AddUser from "./AddUser";
 
 jest.mock("react-redux", () => ({
   ...jest.requireActual("react-redux"),
@@ -14,64 +17,123 @@ jest.mock("react-redux", () => ({
   useSelector: jest.fn(),
 }));
 
-describe("AddUser Component: ", () => {
-  var mockAsync = () =>
-    jest
-      .fn()
-      .mockImplementation(() => Promise.resolve({ key: "value", status: 200 }));
+var mockAsync = (result) =>
+  jest.fn().mockImplementation(() => Promise.resolve(result));
 
-  var addUserJsx = (callbackSpy) => (
-    <Provider store={createStore(() => {}, {})}>
-      <HashRouter>
-        <AddUser
-          addUsers={callbackSpy}
-          failRegexEvent={callbackSpy}
-          updateUsers={callbackSpy}
-          history={{ push: () => {} }}
-        />
-      </HashRouter>
-    </Provider>
-  );
+var mockAsyncRejection = () =>
+  jest.fn().mockImplementation(() => Promise.reject());
 
-  var mockAppState = () => ({
-    limit: 3,
+var addUserJsx = (spy, spy2, spy3) => (
+  <Provider store={createStore(() => {}, {})}>
+    <HashRouter>
+      <AddUser
+        addUsers={spy}
+        failRegexEvent={spy2 || spy}
+        updateUsers={spy3 || spy2 || spy}
+        history={{ push: () => {} }}
+      />
+    </HashRouter>
+  </Provider>
+);
+
+var mockAppState = () => ({
+  limit: 3,
+});
+
+beforeEach(() => {
+  useDispatch.mockImplementation(() => {
+    return () => {};
   });
-
-  beforeEach(() => {
-    useDispatch.mockImplementation(() => {
-      return () => {};
-    });
-    useSelector.mockImplementation((callback) => {
-      return callback(mockAppState());
-    });
-  });
-
-  afterEach(() => {
-    useDispatch.mockClear();
-  });
-
-  it("Renders", () => {
-    let component = mount(addUserJsx(mockAsync()));
-    expect(component.find(".container").length).toBe(1);
-  });
-
-  it("Removes users when they fail Regex", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(addUserJsx(callbackSpy)),
-      textarea = component.find("textarea").first();
-    textarea.simulate("blur", { target: { value: "foo\nbar\n!!*&*" } });
-    let submit = component.find("#submit");
-    submit.simulate("click");
-    expect(callbackSpy).toHaveBeenCalledWith(["foo", "bar"], false);
-  });
-
-  it("Correctly submits admin", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(addUserJsx(callbackSpy)),
-      input = component.find("input").first();
-    input.simulate("change", { target: { checked: true } });
-    let submit = component.find("#submit");
-    submit.simulate("click");
-    expect(callbackSpy).toHaveBeenCalledWith([], true);
+  useSelector.mockImplementation((callback) => {
+    return callback(mockAppState());
   });
 });
+
+afterEach(() => {
+  useDispatch.mockClear();
+});
+
+test("Renders", async () => {
+  await act(async () => {
+    render(addUserJsx());
+  });
+  expect(screen.getByTestId("container")).toBeVisible();
+});
+
+test("Removes users when they fail Regex", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(addUserJsx(callbackSpy));
+  });
+
+  let textarea = screen.getByTestId("user-textarea");
+  let submit = screen.getByTestId("submit");
+
+  fireEvent.blur(textarea, { target: { value: "foo\nbar\n!!*&*" } });
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  expect(callbackSpy).toHaveBeenCalledWith(["foo", "bar"], false);
+});
+
+test("Correctly submits admin", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(addUserJsx(callbackSpy));
+  });
+
+  let textarea = screen.getByTestId("user-textarea");
+  let submit = screen.getByTestId("submit");
+  let check = screen.getByTestId("check");
+
+  userEvent.click(check);
+  fireEvent.blur(textarea, { target: { value: "foo" } });
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  expect(callbackSpy).toHaveBeenCalledWith(["foo"], true);
+});
+
+test("Shows a UI error dialogue when user creation fails", async () => {
+  let callbackSpy = mockAsyncRejection();
+
+  await act(async () => {
+    render(addUserJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText("Failed to create user.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Shows a more specific UI error dialogue when user creation returns an improper status code", async () => {
+  let callbackSpy = mockAsync({ status: 409 });
+
+  await act(async () => {
+    render(addUserJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText(
+    "Failed to create user. User already exists."
+  );
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});

jsx/src/components/CreateGroup/CreateGroup.jsx

@@ -24,11 +24,20 @@ const CreateGroup = (props) => {
 
   return (
     <>
-      <div className="container">
+      <div className="container" data-testid="container">
         {errorAlert != null ? (
           <div className="row">
             <div className="col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
-              <div className="alert alert-danger">{errorAlert}</div>
+              <div className="alert alert-danger">
+                {errorAlert}
+                <button
+                  type="button"
+                  className="close"
+                  onClick={() => setErrorAlert(null)}
+                >
+                  <span>&times;</span>
+                </button>
+              </div>
             </div>
           </div>
         ) : (
@@ -44,6 +53,7 @@ const CreateGroup = (props) => {
                 <div className="input-group">
                   <input
                     className="group-name-input"
+                    data-testid="group-input"
                     type="text"
                     id="group-name"
                     value={groupName}
@@ -61,6 +71,7 @@ const CreateGroup = (props) => {
                 <span> </span>
                 <button
                   id="submit"
+                  data-testid="submit"
                   className="btn btn-primary"
                   onClick={() => {
                     createGroup(groupName)
@@ -69,16 +80,18 @@ const CreateGroup = (props) => {
                           ? updateGroups(0, limit)
                               .then((data) => dispatchPageUpdate(data, 0))
                               .then(() => history.push("/groups"))
-                              .catch((err) => console.log(err))
+                              .catch(() =>
+                                setErrorAlert(`Could not update groups list.`)
+                              )
                           : setErrorAlert(
-                              `[${data.status}] Failed to create group. ${
+                              `Failed to create group. ${
                                 data.status == 409
                                   ? "Group already exists."
                                   : ""
                               }`
                             );
                       })
-                      .catch((err) => console.log(err));
+                      .catch(() => setErrorAlert(`Failed to create group.`));
                   }}
                 >
                   Create

jsx/src/components/CreateGroup/CreateGroup.test.js

@@ -1,13 +1,14 @@
 import React from "react";
-import Enzyme, { mount } from "enzyme";
-import CreateGroup from "./CreateGroup";
-import Adapter from "@wojtekmaj/enzyme-adapter-react-17";
+import "@testing-library/jest-dom";
+import { act } from "react-dom/test-utils";
+import { render, screen, fireEvent } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
 import { Provider, useDispatch, useSelector } from "react-redux";
 import { createStore } from "redux";
 import { HashRouter } from "react-router-dom";
-import regeneratorRuntime from "regenerator-runtime"; // eslint-disable-line
-
-Enzyme.configure({ adapter: new Adapter() });
+// eslint-disable-next-line
+import regeneratorRuntime from "regenerator-runtime";
+import CreateGroup from "./CreateGroup";
 
 jest.mock("react-redux", () => ({
   ...jest.requireActual("react-redux"),
@@ -15,52 +16,100 @@ jest.mock("react-redux", () => ({
   useSelector: jest.fn(),
 }));
 
-describe("CreateGroup Component: ", () => {
-  var mockAsync = (result) =>
-    jest.fn().mockImplementation(() => Promise.resolve(result));
+var mockAsync = (result) =>
+  jest.fn().mockImplementation(() => Promise.resolve(result));
 
-  var createGroupJsx = (callbackSpy) => (
-    <Provider store={createStore(() => {}, {})}>
-      <HashRouter>
-        <CreateGroup
-          createGroup={callbackSpy}
-          updateGroups={callbackSpy}
-          history={{ push: () => {} }}
-        />
-      </HashRouter>
-    </Provider>
-  );
+var mockAsyncRejection = () =>
+  jest.fn().mockImplementation(() => Promise.reject());
 
-  var mockAppState = () => ({
-    limit: 3,
+var createGroupJsx = (callbackSpy) => (
+  <Provider store={createStore(() => {}, {})}>
+    <HashRouter>
+      <CreateGroup
+        createGroup={callbackSpy}
+        updateGroups={callbackSpy}
+        history={{ push: () => {} }}
+      />
+    </HashRouter>
+  </Provider>
+);
+
+var mockAppState = () => ({
+  limit: 3,
+});
+
+beforeEach(() => {
+  useDispatch.mockImplementation(() => {
+    return () => () => {};
   });
-
-  beforeEach(() => {
-    useDispatch.mockImplementation(() => {
-      return () => () => {};
-    });
-    useSelector.mockImplementation((callback) => {
-      return callback(mockAppState());
-    });
-  });
-
-  afterEach(() => {
-    useDispatch.mockClear();
-  });
-
-  it("Renders", () => {
-    let component = mount(createGroupJsx());
-    expect(component.find(".container").length).toBe(1);
-  });
-
-  it("Calls createGroup on submit", () => {
-    let callbackSpy = mockAsync({ status: 200 }),
-      component = mount(createGroupJsx(callbackSpy)),
-      input = component.find("input").first(),
-      submit = component.find("#submit").first();
-    input.simulate("change", { target: { value: "" } });
-    submit.simulate("click");
-    expect(callbackSpy).toHaveBeenNthCalledWith(1, "");
-    expect(component.find(".alert.alert-danger").length).toBe(0);
+  useSelector.mockImplementation((callback) => {
+    return callback(mockAppState());
   });
 });
+
+afterEach(() => {
+  useDispatch.mockClear();
+});
+
+test("Renders", async () => {
+  await act(async () => {
+    render(createGroupJsx());
+  });
+  expect(screen.getByTestId("container")).toBeVisible();
+});
+
+test("Calls createGroup on submit", async () => {
+  let callbackSpy = mockAsync({ status: 200 });
+
+  await act(async () => {
+    render(createGroupJsx(callbackSpy));
+  });
+
+  let input = screen.getByTestId("group-input");
+  let submit = screen.getByTestId("submit");
+
+  userEvent.type(input, "groupname");
+  await act(async () => fireEvent.click(submit));
+
+  expect(callbackSpy).toHaveBeenNthCalledWith(1, "groupname");
+});
+
+test("Shows a UI error dialogue when group creation fails", async () => {
+  let callbackSpy = mockAsyncRejection();
+
+  await act(async () => {
+    render(createGroupJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText("Failed to create group.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Shows a more specific UI error dialogue when user creation returns an improper status code", async () => {
+  let callbackSpy = mockAsync({ status: 409 });
+
+  await act(async () => {
+    render(createGroupJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText(
+    "Failed to create group. Group already exists."
+  );
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});

jsx/src/components/EditUser/EditUser.jsx

@@ -19,14 +19,7 @@ const EditUser = (props) => {
     });
   };
 
-  var {
-    editUser,
-    deleteUser,
-    failRegexEvent,
-    noChangeEvent,
-    updateUsers,
-    history,
-  } = props;
+  var { editUser, deleteUser, noChangeEvent, updateUsers, history } = props;
 
   if (props.location.state == undefined) {
     props.history.push("/");
@@ -40,11 +33,20 @@ const EditUser = (props) => {
 
   return (
     <>
-      <div className="container">
+      <div className="container" data-testid="container">
         {errorAlert != null ? (
           <div className="row">
             <div className="col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
-              <div className="alert alert-danger">{errorAlert}</div>
+              <div className="alert alert-danger">
+                {errorAlert}
+                <button
+                  type="button"
+                  className="close"
+                  onClick={() => setErrorAlert(null)}
+                >
+                  <span>&times;</span>
+                </button>
+              </div>
             </div>
           </div>
         ) : (
@@ -61,6 +63,7 @@ const EditUser = (props) => {
                   <div className="form-group">
                     <textarea
                       className="form-control"
+                      data-testid="edit-username-input"
                       id="exampleFormControlTextarea1"
                       rows="3"
                       placeholder="updated username"
@@ -81,20 +84,26 @@ const EditUser = (props) => {
                     <br></br>
                     <button
                       id="delete-user"
+                      data-testid="delete-user"
                       className="btn btn-danger btn-sm"
-                      onClick={() => {
+                      onClick={(e) => {
+                        e.preventDefault();
                         deleteUser(username)
                           .then((data) => {
                             data.status < 300
                               ? updateUsers(0, limit)
                                   .then((data) => dispatchPageChange(data, 0))
                                   .then(() => history.push("/"))
-                                  .catch((err) => console.log(err))
-                              : setErrorAlert(
-                                  `[${data.status}] Failed to edit user.`
-                                );
+                                  .catch(() =>
+                                    setErrorAlert(
+                                      `Could not update users list.`
+                                    )
+                                  )
+                              : setErrorAlert(`Failed to edit user.`);
                           })
-                          .catch((err) => console.log(err));
+                          .catch(() => {
+                            setErrorAlert(`Failed to edit user.`);
+                          });
                       }}
                     >
                       Delete user
@@ -109,8 +118,10 @@ const EditUser = (props) => {
                 <span> </span>
                 <button
                   id="submit"
+                  data-testid="submit"
                   className="btn btn-primary"
-                  onClick={() => {
+                  onClick={(e) => {
+                    e.preventDefault();
                     if (updatedUsername == "" && admin == has_admin) {
                       noChangeEvent();
                       return;
@@ -129,17 +140,20 @@ const EditUser = (props) => {
                               ? updateUsers(0, limit)
                                   .then((data) => dispatchPageChange(data, 0))
                                   .then(() => history.push("/"))
-                                  .catch((err) => console.log(err))
-                              : setErrorAlert(
-                                  `[${data.status}] Failed to edit user.`
-                                );
+                                  .catch(() =>
+                                    setErrorAlert(
+                                      `Could not update users list.`
+                                    )
+                                  )
+                              : setErrorAlert(`Failed to edit user.`);
                           })
-                          .catch((err) => {
-                            console.log(err);
+                          .catch(() => {
+                            setErrorAlert(`Failed to edit user.`);
                           });
                       } else {
-                        setUpdatedUsername("");
-                        failRegexEvent();
+                        setErrorAlert(
+                          `Failed to edit user. Make sure the username does not contain special characters.`
+                        );
                       }
                     } else {
                       editUser(username, username, admin)
@@ -148,13 +162,13 @@ const EditUser = (props) => {
                             ? updateUsers(0, limit)
                                 .then((data) => dispatchPageChange(data, 0))
                                 .then(() => history.push("/"))
-                                .catch((err) => console.log(err))
-                            : setErrorAlert(
-                                `[${data.status}] Failed to edit user.`
-                              );
+                                .catch(() =>
+                                  setErrorAlert(`Could not update users list.`)
+                                )
+                            : setErrorAlert(`Failed to edit user.`);
                         })
-                        .catch((err) => {
-                          console.log(err);
+                        .catch(() => {
+                          setErrorAlert(`Failed to edit user.`);
                         });
                     }
                   }}

jsx/src/components/EditUser/EditUser.test.js

@@ -1,12 +1,14 @@
 import React from "react";
-import Enzyme, { mount } from "enzyme";
-import EditUser from "./EditUser";
-import Adapter from "@wojtekmaj/enzyme-adapter-react-17";
+import "@testing-library/jest-dom";
+import { act } from "react-dom/test-utils";
+import { render, screen, fireEvent } from "@testing-library/react";
 import { Provider, useDispatch, useSelector } from "react-redux";
 import { createStore } from "redux";
 import { HashRouter } from "react-router-dom";
+// eslint-disable-next-line
+import regeneratorRuntime from "regenerator-runtime";
 
-Enzyme.configure({ adapter: new Adapter() });
+import EditUser from "./EditUser";
 
 jest.mock("react-redux", () => ({
   ...jest.requireActual("react-redux"),
@@ -14,67 +16,124 @@ jest.mock("react-redux", () => ({
   useSelector: jest.fn(),
 }));
 
-describe("EditUser Component: ", () => {
-  var mockAsync = () =>
-    jest
-      .fn()
-      .mockImplementation(() => Promise.resolve({ key: "value", status: 200 }));
-  var mockSync = () => jest.fn();
+var mockAsync = (data) =>
+  jest.fn().mockImplementation(() => Promise.resolve(data));
 
-  var editUserJsx = (callbackSpy, empty) => (
-    <Provider store={createStore(() => {}, {})}>
-      <HashRouter>
-        <EditUser
-          location={
-            empty ? {} : { state: { username: "foo", has_admin: false } }
-          }
-          deleteUser={callbackSpy}
-          editUser={callbackSpy}
-          updateUsers={callbackSpy}
-          history={{ push: () => {} }}
-          failRegexEvent={callbackSpy}
-          noChangeEvent={callbackSpy}
-        />
-      </HashRouter>
-    </Provider>
-  );
+var mockAsyncRejection = () =>
+  jest.fn().mockImplementation(() => Promise.reject());
 
-  var mockAppState = () => ({
-    limit: 3,
+var editUserJsx = (callbackSpy, empty) => (
+  <Provider store={createStore(() => {}, {})}>
+    <HashRouter>
+      <EditUser
+        location={empty ? {} : { state: { username: "foo", has_admin: false } }}
+        deleteUser={callbackSpy}
+        editUser={callbackSpy}
+        updateUsers={callbackSpy}
+        history={{ push: () => {} }}
+        failRegexEvent={callbackSpy}
+        noChangeEvent={callbackSpy}
+      />
+    </HashRouter>
+  </Provider>
+);
+
+var mockAppState = () => ({
+  limit: 3,
+});
+
+beforeEach(() => {
+  useDispatch.mockImplementation(() => {
+    return () => {};
   });
-
-  beforeEach(() => {
-    useDispatch.mockImplementation(() => {
-      return () => {};
-    });
-    useSelector.mockImplementation((callback) => {
-      return callback(mockAppState());
-    });
-  });
-
-  afterEach(() => {
-    useDispatch.mockClear();
-  });
-
-  it("Calls the delete user function when the button is pressed", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(editUserJsx(callbackSpy)),
-      deleteUser = component.find("#delete-user");
-    deleteUser.simulate("click");
-    expect(callbackSpy).toHaveBeenCalled();
-  });
-
-  it("Submits the edits when the button is pressed", () => {
-    let callbackSpy = mockSync(),
-      component = mount(editUserJsx(callbackSpy)),
-      submit = component.find("#submit");
-    submit.simulate("click");
-    expect(callbackSpy).toHaveBeenCalled();
-  });
-
-  it("Doesn't render when no data is provided", () => {
-    let callbackSpy = mockSync(),
-      component = mount(editUserJsx(callbackSpy, true));
-    expect(component.find(".container").length).toBe(0);
+  useSelector.mockImplementation((callback) => {
+    return callback(mockAppState());
   });
 });
+
+afterEach(() => {
+  useDispatch.mockClear();
+});
+
+test("Renders", async () => {
+  let callbackSpy = mockAsync({ key: "value", status: 200 });
+
+  await act(async () => {
+    render(editUserJsx(callbackSpy));
+  });
+
+  expect(screen.getByTestId("container")).toBeVisible();
+});
+
+test("Calls the delete user function when the button is pressed", async () => {
+  let callbackSpy = mockAsync({ key: "value", status: 200 });
+
+  await act(async () => {
+    render(editUserJsx(callbackSpy));
+  });
+
+  let deleteUser = screen.getByTestId("delete-user");
+
+  await act(async () => {
+    fireEvent.click(deleteUser);
+  });
+
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Submits the edits when the button is pressed", async () => {
+  let callbackSpy = mockAsync({ key: "value", status: 200 });
+
+  await act(async () => {
+    render(editUserJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Shows a UI error dialogue when user edit fails", async () => {
+  let callbackSpy = mockAsyncRejection();
+
+  await act(async () => {
+    render(editUserJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+  let usernameInput = screen.getByTestId("edit-username-input");
+
+  fireEvent.blur(usernameInput, { target: { value: "whatever" } });
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText("Failed to edit user.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Shows a UI error dialogue when user edit returns an improper status code", async () => {
+  let callbackSpy = mockAsync({ status: 409 });
+
+  await act(async () => {
+    render(editUserJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+  let usernameInput = screen.getByTestId("edit-username-input");
+
+  fireEvent.blur(usernameInput, { target: { value: "whatever" } });
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText("Failed to edit user.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});

jsx/src/components/GroupEdit/GroupEdit.jsx

@@ -7,6 +7,7 @@ import GroupSelect from "../GroupSelect/GroupSelect";
 const GroupEdit = (props) => {
   var [selected, setSelected] = useState([]),
     [changed, setChanged] = useState(false),
+    [errorAlert, setErrorAlert] = useState(null),
     limit = useSelector((state) => state.limit);
 
   var dispatch = useDispatch();
@@ -41,7 +42,25 @@ const GroupEdit = (props) => {
   if (!group_data) return <div></div>;
 
   return (
-    <div className="container">
+    <div className="container" data-testid="container">
+      {errorAlert != null ? (
+        <div className="row">
+          <div className="col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
+            <div className="alert alert-danger">
+              {errorAlert}
+              <button
+                type="button"
+                className="close"
+                onClick={() => setErrorAlert(null)}
+              >
+                <span>&times;</span>
+              </button>
+            </div>
+          </div>
+        </div>
+      ) : (
+        <></>
+      )}
       <div className="row">
         <div className="col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
           <h3>Editing Group {group_data.name}</h3>
@@ -65,6 +84,7 @@ const GroupEdit = (props) => {
           <span> </span>
           <button
             id="submit"
+            data-testid="submit"
             className="btn btn-primary"
             onClick={() => {
               // check for changes
@@ -89,29 +109,43 @@ const GroupEdit = (props) => {
                 );
 
               Promise.all(promiseQueue)
-                .then(() => {
-                  updateGroups(0, limit)
-                    .then((data) => dispatchPageUpdate(data, 0))
-                    .then(() => history.push("/groups"));
+                .then((data) => {
+                  // ensure status of all requests are < 300
+                  let allPassed =
+                    data.map((e) => e.status).filter((e) => e >= 300).length ==
+                    0;
+
+                  allPassed
+                    ? updateGroups(0, limit)
+                        .then((data) => dispatchPageUpdate(data, 0))
+                        .then(() => history.push("/groups"))
+                    : setErrorAlert(`Failed to edit group.`);
                 })
-                .catch((err) => console.log(err));
+                .catch(() => {
+                  console.log("outer");
+                  setErrorAlert(`Failed to edit group.`);
+                });
             }}
           >
             Apply
           </button>
           <button
             id="delete-group"
+            data-testid="delete-group"
             className="btn btn-danger"
             style={{ float: "right" }}
             onClick={() => {
               var groupName = group_data.name;
               deleteGroup(groupName)
-                .then(() => {
-                  updateGroups(0, limit)
-                    .then((data) => dispatchPageUpdate(data, 0))
-                    .then(() => history.push("/groups"));
+                // TODO add error if res not ok
+                .then((data) => {
+                  data.status < 300
+                    ? updateGroups(0, limit)
+                        .then((data) => dispatchPageUpdate(data, 0))
+                        .then(() => history.push("/groups"))
+                    : setErrorAlert(`Failed to delete group.`);
                 })
-                .catch((err) => console.log(err));
+                .catch(() => setErrorAlert(`Failed to delete group.`));
             }}
           >
             Delete Group

jsx/src/components/GroupEdit/GroupEdit.test.jsx

@@ -1,100 +1,228 @@
 import React from "react";
-import Enzyme, { mount } from "enzyme";
-import GroupEdit from "./GroupEdit";
-import Adapter from "@wojtekmaj/enzyme-adapter-react-17";
+import "@testing-library/jest-dom";
+import { act } from "react-dom/test-utils";
+import { render, screen, fireEvent } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
 import { Provider, useSelector } from "react-redux";
 import { createStore } from "redux";
 import { HashRouter } from "react-router-dom";
-import { act } from "react-dom/test-utils";
-import regeneratorRuntime from "regenerator-runtime"; // eslint-disable-line
+// eslint-disable-next-line
+import regeneratorRuntime from "regenerator-runtime";
 
-Enzyme.configure({ adapter: new Adapter() });
+import GroupEdit from "./GroupEdit";
 
 jest.mock("react-redux", () => ({
   ...jest.requireActual("react-redux"),
   useSelector: jest.fn(),
 }));
 
-describe("GroupEdit Component: ", () => {
-  var mockAsync = () => jest.fn().mockImplementation(() => Promise.resolve());
+var mockAsync = (data) =>
+  jest.fn().mockImplementation(() => Promise.resolve(data));
 
-  var okPacket = new Promise((resolve) => resolve(true));
+var mockAsyncRejection = () =>
+  jest.fn().mockImplementation(() => Promise.reject());
 
-  var groupEditJsx = (callbackSpy) => (
-    <Provider store={createStore(() => {}, {})}>
-      <HashRouter>
-        <GroupEdit
-          location={{
-            state: {
-              group_data: { users: ["foo"], name: "group" },
-              callback: () => {},
-            },
-          }}
-          addToGroup={callbackSpy}
-          removeFromGroup={callbackSpy}
-          deleteGroup={callbackSpy}
-          history={{ push: () => callbackSpy }}
-          updateGroups={callbackSpy}
-          validateUser={jest.fn().mockImplementation(() => okPacket)}
-        />
-      </HashRouter>
-    </Provider>
-  );
+var okPacket = new Promise((resolve) => resolve(true));
 
-  var mockAppState = () => ({
-    limit: 3,
-  });
+var groupEditJsx = (callbackSpy) => (
+  <Provider store={createStore(() => {}, {})}>
+    <HashRouter>
+      <GroupEdit
+        location={{
+          state: {
+            group_data: { users: ["foo"], name: "group" },
+            callback: () => {},
+          },
+        }}
+        addToGroup={callbackSpy}
+        removeFromGroup={callbackSpy}
+        deleteGroup={callbackSpy}
+        history={{ push: () => callbackSpy }}
+        updateGroups={callbackSpy}
+        validateUser={jest.fn().mockImplementation(() => okPacket)}
+      />
+    </HashRouter>
+  </Provider>
+);
 
-  beforeEach(() => {
-    useSelector.mockImplementation((callback) => {
-      return callback(mockAppState());
-    });
-  });
+var mockAppState = () => ({
+  limit: 3,
+});
 
-  afterEach(() => {
-    useSelector.mockClear();
-  });
-
-  it("Adds user from input to user selectables on button click", async () => {
-    let callbackSpy = mockAsync(),
-      component = mount(groupEditJsx(callbackSpy)),
-      input = component.find("#username-input"),
-      validateUser = component.find("#validate-user"),
-      submit = component.find("#submit");
-
-    input.simulate("change", { target: { value: "bar" } });
-    validateUser.simulate("click");
-    await act(() => okPacket);
-    submit.simulate("click");
-    expect(callbackSpy).toHaveBeenNthCalledWith(1, ["bar"], "group");
-  });
-
-  it("Removes a user recently added from input from the selectables list", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(groupEditJsx(callbackSpy)),
-      unsubmittedUser = component.find(".item.selected").last();
-    unsubmittedUser.simulate("click");
-    expect(component.find(".item").length).toBe(1);
-  });
-
-  it("Grays out a user, already in the group, when unselected and calls deleteUser on submit", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(groupEditJsx(callbackSpy)),
-      groupUser = component.find(".item.selected").first();
-    groupUser.simulate("click");
-    expect(component.find(".item.unselected").length).toBe(1);
-    expect(component.find(".item").length).toBe(1);
-    // test deleteUser call
-    let submit = component.find("#submit");
-    submit.simulate("click");
-    expect(callbackSpy).toHaveBeenNthCalledWith(1, ["foo"], "group");
-  });
-
-  it("Calls deleteGroup on button click", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(groupEditJsx(callbackSpy)),
-      deleteGroup = component.find("#delete-group").first();
-    deleteGroup.simulate("click");
-    expect(callbackSpy).toHaveBeenNthCalledWith(1, "group");
+beforeEach(() => {
+  useSelector.mockImplementation((callback) => {
+    return callback(mockAppState());
   });
 });
+
+afterEach(() => {
+  useSelector.mockClear();
+});
+
+test("Renders", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  expect(screen.getByTestId("container")).toBeVisible();
+});
+
+test("Adds user from input to user selectables on button click", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let input = screen.getByTestId("username-input");
+  let validateUser = screen.getByTestId("validate-user");
+  let submit = screen.getByTestId("submit");
+
+  userEvent.type(input, "bar");
+  fireEvent.click(validateUser);
+  await act(async () => okPacket);
+
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  expect(callbackSpy).toHaveBeenNthCalledWith(1, ["bar"], "group");
+});
+
+test("Removes a user recently added from input from the selectables list", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let selectedUser = screen.getByText("foo");
+  fireEvent.click(selectedUser);
+
+  let unselectedUser = screen.getByText("foo");
+
+  expect(unselectedUser.className).toBe("item unselected");
+});
+
+test("Grays out a user, already in the group, when unselected and calls deleteUser on submit", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let submit = screen.getByTestId("submit");
+
+  let groupUser = screen.getByText("foo");
+  fireEvent.click(groupUser);
+
+  let unselectedUser = screen.getByText("foo");
+  expect(unselectedUser.className).toBe("item unselected");
+
+  // test deleteUser call
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  expect(callbackSpy).toHaveBeenNthCalledWith(1, ["foo"], "group");
+});
+
+test("Calls deleteGroup on button click", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let deleteGroup = screen.getByTestId("delete-group");
+
+  await act(async () => {
+    fireEvent.click(deleteGroup);
+  });
+
+  expect(callbackSpy).toHaveBeenNthCalledWith(1, "group");
+});
+
+test("Shows a UI error dialogue when group edit fails", async () => {
+  let callbackSpy = mockAsyncRejection();
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let groupUser = screen.getByText("foo");
+  fireEvent.click(groupUser);
+
+  let submit = screen.getByTestId("submit");
+
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText("Failed to edit group.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Shows a UI error dialogue when group edit returns an improper status code", async () => {
+  let callbackSpy = mockAsync({ status: 403 });
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let groupUser = screen.getByText("foo");
+  fireEvent.click(groupUser);
+
+  let submit = screen.getByTestId("submit");
+
+  await act(async () => {
+    fireEvent.click(submit);
+  });
+
+  let errorDialog = screen.getByText("Failed to edit group.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Shows a UI error dialogue when group delete fails", async () => {
+  let callbackSpy = mockAsyncRejection();
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let deleteGroup = screen.getByTestId("delete-group");
+
+  await act(async () => {
+    fireEvent.click(deleteGroup);
+  });
+
+  let errorDialog = screen.getByText("Failed to delete group.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Shows a UI error dialogue when group delete returns an improper status code", async () => {
+  let callbackSpy = mockAsync({ status: 403 });
+
+  await act(async () => {
+    render(groupEditJsx(callbackSpy));
+  });
+
+  let deleteGroup = screen.getByTestId("delete-group");
+
+  await act(async () => {
+    fireEvent.click(deleteGroup);
+  });
+
+  let errorDialog = screen.getByText("Failed to delete group.");
+
+  expect(errorDialog).toBeVisible();
+  expect(callbackSpy).toHaveBeenCalled();
+});

jsx/src/components/GroupSelect/GroupSelect.jsx

@@ -24,6 +24,7 @@ const GroupSelect = (props) => {
         <div className="input-group">
           <input
             id="username-input"
+            data-testid="username-input"
             type="text"
             className="form-control"
             placeholder="Add by username"
@@ -35,6 +36,7 @@ const GroupSelect = (props) => {
           <span className="input-group-btn">
             <button
               id="validate-user"
+              data-testid="validate-user"
               className="btn btn-default"
               type="button"
               onClick={() => {

jsx/src/components/Groups/Groups.jsx

@@ -19,7 +19,7 @@ const Groups = (props) => {
   var { updateGroups, history } = props;
 
   if (!groups_data || !user_data) {
-    return <div></div>;
+    return <div data-testid="no-show"></div>;
   }
 
   const dispatchPageChange = (data, page) => {
@@ -39,7 +39,7 @@ const Groups = (props) => {
   }
 
   return (
-    <div className="container">
+    <div className="container" data-testid="container">
       <div className="row">
         <div className="col-md-12 col-lg-10 col-lg-offset-1">
           <div className="panel panel-default">

jsx/src/components/Groups/Groups.test.js

@@ -1,12 +1,14 @@
 import React from "react";
-import Enzyme, { mount } from "enzyme";
-import Groups from "./Groups";
-import Adapter from "@wojtekmaj/enzyme-adapter-react-17";
+import "@testing-library/jest-dom";
+import { act } from "react-dom/test-utils";
+import { render, screen } from "@testing-library/react";
 import { Provider, useDispatch, useSelector } from "react-redux";
 import { createStore } from "redux";
 import { HashRouter } from "react-router-dom";
+// eslint-disable-next-line
+import regeneratorRuntime from "regenerator-runtime";
 
-Enzyme.configure({ adapter: new Adapter() });
+import Groups from "./Groups";
 
 jest.mock("react-redux", () => ({
   ...jest.requireActual("react-redux"),
@@ -14,52 +16,75 @@ jest.mock("react-redux", () => ({
   useDispatch: jest.fn(),
 }));
 
-describe("Groups Component: ", () => {
-  var mockAsync = () =>
-    jest.fn().mockImplementation(() => Promise.resolve({ key: "value" }));
+var mockAsync = () =>
+  jest.fn().mockImplementation(() => Promise.resolve({ key: "value" }));
 
-  var groupsJsx = (callbackSpy) => (
-    <Provider store={createStore(() => {}, {})}>
-      <HashRouter>
-        <Groups location={{ search: "0" }} updateGroups={callbackSpy} />
-      </HashRouter>
-    </Provider>
-  );
+var groupsJsx = (callbackSpy) => (
+  <Provider store={createStore(() => {}, {})}>
+    <HashRouter>
+      <Groups location={{ search: "0" }} updateGroups={callbackSpy} />
+    </HashRouter>
+  </Provider>
+);
 
-  var mockAppState = () => ({
-    user_data: JSON.parse(
-      '[{"kind":"user","name":"foo","admin":true,"groups":[],"server":"/user/foo/","pending":null,"created":"2020-12-07T18:46:27.112695Z","last_activity":"2020-12-07T21:00:33.336354Z","servers":{"":{"name":"","last_activity":"2020-12-07T20:58:02.437408Z","started":"2020-12-07T20:58:01.508266Z","pending":null,"ready":true,"state":{"pid":28085},"url":"/user/foo/","user_options":{},"progress_url":"/hub/api/users/foo/server/progress"}}},{"kind":"user","name":"bar","admin":false,"groups":[],"server":null,"pending":null,"created":"2020-12-07T18:46:27.115528Z","last_activity":"2020-12-07T20:43:51.013613Z","servers":{}}]'
-    ),
-    groups_data: JSON.parse(
-      '[{"kind":"group","name":"testgroup","users":[]}, {"kind":"group","name":"testgroup2","users":["foo", "bar"]}]'
-    ),
+var mockAppState = () => ({
+  user_data: JSON.parse(
+    '[{"kind":"user","name":"foo","admin":true,"groups":[],"server":"/user/foo/","pending":null,"created":"2020-12-07T18:46:27.112695Z","last_activity":"2020-12-07T21:00:33.336354Z","servers":{"":{"name":"","last_activity":"2020-12-07T20:58:02.437408Z","started":"2020-12-07T20:58:01.508266Z","pending":null,"ready":true,"state":{"pid":28085},"url":"/user/foo/","user_options":{},"progress_url":"/hub/api/users/foo/server/progress"}}},{"kind":"user","name":"bar","admin":false,"groups":[],"server":null,"pending":null,"created":"2020-12-07T18:46:27.115528Z","last_activity":"2020-12-07T20:43:51.013613Z","servers":{}}]'
+  ),
+  groups_data: JSON.parse(
+    '[{"kind":"group","name":"testgroup","users":[]}, {"kind":"group","name":"testgroup2","users":["foo", "bar"]}]'
+  ),
+  limit: 10,
+});
+
+beforeEach(() => {
+  useSelector.mockImplementation((callback) => {
+    return callback(mockAppState());
   });
-
-  beforeEach(() => {
-    useSelector.mockImplementation((callback) => {
-      return callback(mockAppState());
-    });
-    useDispatch.mockImplementation(() => {
-      return () => {};
-    });
-  });
-
-  afterEach(() => {
-    useSelector.mockClear();
-  });
-
-  it("Renders groups_data prop into links", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(groupsJsx(callbackSpy)),
-      links = component.find("li");
-    expect(links.length).toBe(2);
-  });
-
-  it("Renders nothing if required data is not available", () => {
-    useSelector.mockImplementation((callback) => {
-      return callback({});
-    });
-    let component = mount(groupsJsx());
-    expect(component.html()).toBe("<div></div>");
+  useDispatch.mockImplementation(() => {
+    return () => {};
   });
 });
+
+afterEach(() => {
+  useSelector.mockClear();
+});
+
+test("Renders", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupsJsx(callbackSpy));
+  });
+
+  expect(screen.getByTestId("container")).toBeVisible();
+});
+
+test("Renders groups_data prop into links", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupsJsx(callbackSpy));
+  });
+
+  let testgroup = screen.getByText("testgroup");
+  let testgroup2 = screen.getByText("testgroup2");
+
+  expect(testgroup).toBeVisible();
+  expect(testgroup2).toBeVisible();
+});
+
+test("Renders nothing if required data is not available", async () => {
+  useSelector.mockImplementation((callback) => {
+    return callback({});
+  });
+
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(groupsJsx(callbackSpy));
+  });
+
+  let noShow = screen.getByTestId("no-show");
+  expect(noShow).toBeVisible();
+});

jsx/src/components/ServerDashboard/ServerDashboard.jsx

@@ -27,6 +27,7 @@ const ServerDashboard = (props) => {
     runningAsc = (e) => e.sort((a) => (a.server == null ? -1 : 1)),
     runningDesc = (e) => e.sort((a) => (a.server == null ? 1 : -1));
 
+  var [errorAlert, setErrorAlert] = useState(null);
   var [sortMethod, setSortMethod] = useState(null);
 
   var user_data = useSelector((state) => state.user_data),
@@ -60,7 +61,7 @@ const ServerDashboard = (props) => {
   };
 
   if (!user_data) {
-    return <div></div>;
+    return <div data-testid="no-show"></div>;
   }
 
   if (page != user_page) {
@@ -72,7 +73,25 @@ const ServerDashboard = (props) => {
   }
 
   return (
-    <div className="container">
+    <div className="container" data-testid="container">
+      {errorAlert != null ? (
+        <div className="row">
+          <div className="col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
+            <div className="alert alert-danger">
+              {errorAlert}
+              <button
+                type="button"
+                className="close"
+                onClick={() => setErrorAlert(null)}
+              >
+                <span>&times;</span>
+              </button>
+            </div>
+          </div>
+        </div>
+      ) : (
+        <></>
+      )}
       <div className="manage-groups" style={{ float: "right", margin: "20px" }}>
         <Link to="/groups">{"> Manage Groups"}</Link>
       </div>
@@ -85,6 +104,7 @@ const ServerDashboard = (props) => {
                 <SortHandler
                   sorts={{ asc: usernameAsc, desc: usernameDesc }}
                   callback={(method) => setSortMethod(() => method)}
+                  testid="user-sort"
                 />
               </th>
               <th id="admin-header">
@@ -92,6 +112,7 @@ const ServerDashboard = (props) => {
                 <SortHandler
                   sorts={{ asc: adminAsc, desc: adminDesc }}
                   callback={(method) => setSortMethod(() => method)}
+                  testid="admin-sort"
                 />
               </th>
               <th id="last-activity-header">
@@ -99,6 +120,7 @@ const ServerDashboard = (props) => {
                 <SortHandler
                   sorts={{ asc: dateAsc, desc: dateDesc }}
                   callback={(method) => setSortMethod(() => method)}
+                  testid="last-activity-sort"
                 />
               </th>
               <th id="running-status-header">
@@ -106,6 +128,7 @@ const ServerDashboard = (props) => {
                 <SortHandler
                   sorts={{ asc: runningAsc, desc: runningDesc }}
                   callback={(method) => setSortMethod(() => method)}
+                  testid="running-status-sort"
                 />
               </th>
               <th id="actions-header">Actions</th>
@@ -125,17 +148,33 @@ const ServerDashboard = (props) => {
                 <Button
                   variant="primary"
                   className="start-all"
+                  data-testid="start-all"
                   onClick={() => {
                     Promise.all(startAll(user_data.map((e) => e.name)))
+                      .then((res) => {
+                        let failedServers = res.filter((e) => !e.ok);
+                        if (failedServers.length > 0) {
+                          setErrorAlert(
+                            `Failed to start ${failedServers.length} ${
+                              failedServers.length > 1 ? "servers" : "server"
+                            }. ${
+                              failedServers.length > 1 ? "Are they " : "Is it "
+                            } already running?`
+                          );
+                        }
+                        return res;
+                      })
                       .then((res) => {
                         updateUsers(...slice)
                           .then((data) => {
                             dispatchPageUpdate(data, page);
                           })
-                          .catch((err) => console.log(err));
+                          .catch(() =>
+                            setErrorAlert(`Failed to update users list.`)
+                          );
                         return res;
                       })
-                      .catch((err) => console.log(err));
+                      .catch(() => setErrorAlert(`Failed to start servers.`));
                   }}
                 >
                   Start All
@@ -145,17 +184,33 @@ const ServerDashboard = (props) => {
                 <Button
                   variant="danger"
                   className="stop-all"
+                  data-testid="stop-all"
                   onClick={() => {
                     Promise.all(stopAll(user_data.map((e) => e.name)))
+                      .then((res) => {
+                        let failedServers = res.filter((e) => !e.ok);
+                        if (failedServers.length > 0) {
+                          setErrorAlert(
+                            `Failed to stop ${failedServers.length} ${
+                              failedServers.length > 1 ? "servers" : "server"
+                            }. ${
+                              failedServers.length > 1 ? "Are they " : "Is it "
+                            } already stopped?`
+                          );
+                        }
+                        return res;
+                      })
                       .then((res) => {
                         updateUsers(...slice)
                           .then((data) => {
                             dispatchPageUpdate(data, page);
                           })
-                          .catch((err) => console.log(err));
+                          .catch(() =>
+                            setErrorAlert(`Failed to update users list.`)
+                          );
                         return res;
                       })
-                      .catch((err) => console.log(err));
+                      .catch(() => setErrorAlert(`Failed to stop servers.`));
                   }}
                 >
                   Stop All
@@ -174,12 +229,12 @@ const ServerDashboard = (props) => {
             </tr>
             {user_data.map((e, i) => (
               <tr key={i + "row"} className="user-row">
-                <td>{e.name}</td>
-                <td>{e.admin ? "admin" : ""}</td>
-                <td>
+                <td data-testid="user-row-name">{e.name}</td>
+                <td data-testid="user-row-admin">{e.admin ? "admin" : ""}</td>
+                <td data-testid="user-row-last-activity">
                   {e.last_activity ? timeSince(e.last_activity) : "Never"}
                 </td>
-                <td>
+                <td data-testid="user-row-server-activity">
                   {e.server != null ? (
                     // Stop Single-user server
                     <button
@@ -187,12 +242,20 @@ const ServerDashboard = (props) => {
                       onClick={() =>
                         stopServer(e.name)
                           .then((res) => {
-                            updateUsers(...slice).then((data) => {
-                              dispatchPageUpdate(data, page);
-                            });
+                            if (res.status < 300) {
+                              updateUsers(...slice)
+                                .then((data) => {
+                                  dispatchPageUpdate(data, page);
+                                })
+                                .catch(() =>
+                                  setErrorAlert(`Failed to update users list.`)
+                                );
+                            } else {
+                              setErrorAlert(`Failed to stop server.`);
+                            }
                             return res;
                           })
-                          .catch((err) => console.log(err))
+                          .catch(() => setErrorAlert(`Failed to stop server.`))
                       }
                     >
                       Stop Server
@@ -204,12 +267,22 @@ const ServerDashboard = (props) => {
                       onClick={() =>
                         startServer(e.name)
                           .then((res) => {
-                            updateUsers(...slice).then((data) => {
-                              dispatchPageUpdate(data, page);
-                            });
+                            if (res.status < 300) {
+                              updateUsers(...slice)
+                                .then((data) => {
+                                  dispatchPageUpdate(data, page);
+                                })
+                                .catch(() =>
+                                  setErrorAlert(`Failed to update users list.`)
+                                );
+                            } else {
+                              setErrorAlert(`Failed to start server.`);
+                            }
                             return res;
                           })
-                          .catch((err) => console.log(err))
+                          .catch(() => {
+                            setErrorAlert(`Failed to start server.`);
+                          })
                       }
                     >
                       Start Server
@@ -269,13 +342,14 @@ ServerDashboard.propTypes = {
 };
 
 const SortHandler = (props) => {
-  var { sorts, callback } = props;
+  var { sorts, callback, testid } = props;
 
   var [direction, setDirection] = useState(undefined);
 
   return (
     <div
       className="sort-icon"
+      data-testid={testid}
       onClick={() => {
         if (!direction) {
           callback(sorts.desc);
@@ -303,6 +377,7 @@ const SortHandler = (props) => {
 SortHandler.propTypes = {
   sorts: PropTypes.object,
   callback: PropTypes.func,
+  testid: PropTypes.string,
 };
 
 export default ServerDashboard;

jsx/src/components/ServerDashboard/ServerDashboard.test.js

@@ -1,161 +1,437 @@
 import React from "react";
-import Enzyme, { mount } from "enzyme";
-import ServerDashboard from "./ServerDashboard";
-import Adapter from "@wojtekmaj/enzyme-adapter-react-17";
+import "@testing-library/jest-dom";
+import { act } from "react-dom/test-utils";
+import { render, screen, fireEvent } from "@testing-library/react";
 import { HashRouter, Switch } from "react-router-dom";
 import { Provider, useSelector } from "react-redux";
 import { createStore } from "redux";
+// eslint-disable-next-line
+import regeneratorRuntime from "regenerator-runtime";
 
-Enzyme.configure({ adapter: new Adapter() });
+import ServerDashboard from "./ServerDashboard";
 
 jest.mock("react-redux", () => ({
   ...jest.requireActual("react-redux"),
   useSelector: jest.fn(),
 }));
 
-describe("ServerDashboard Component: ", () => {
-  var serverDashboardJsx = (callbackSpy) => (
-    <Provider store={createStore(() => {}, {})}>
-      <HashRouter>
-        <Switch>
-          <ServerDashboard
-            updateUsers={callbackSpy}
-            shutdownHub={callbackSpy}
-            startServer={callbackSpy}
-            stopServer={callbackSpy}
-            startAll={callbackSpy}
-            stopAll={callbackSpy}
-          />
-        </Switch>
-      </HashRouter>
-    </Provider>
-  );
+var serverDashboardJsx = (spy) => (
+  <Provider store={createStore(() => {}, {})}>
+    <HashRouter>
+      <Switch>
+        <ServerDashboard
+          updateUsers={spy}
+          shutdownHub={spy}
+          startServer={spy}
+          stopServer={spy}
+          startAll={spy}
+          stopAll={spy}
+        />
+      </Switch>
+    </HashRouter>
+  </Provider>
+);
 
-  var mockAsync = () =>
-    jest
-      .fn()
-      .mockImplementation(() =>
-        Promise.resolve({ json: () => Promise.resolve({ k: "v" }) })
-      );
+var mockAsync = (data) =>
+  jest.fn().mockImplementation(() => Promise.resolve(data ? data : { k: "v" }));
 
-  var mockAppState = () => ({
-    user_data: JSON.parse(
-      '[{"kind":"user","name":"foo","admin":true,"groups":[],"server":"/user/foo/","pending":null,"created":"2020-12-07T18:46:27.112695Z","last_activity":"2020-12-07T21:00:33.336354Z","servers":{"":{"name":"","last_activity":"2020-12-07T20:58:02.437408Z","started":"2020-12-07T20:58:01.508266Z","pending":null,"ready":true,"state":{"pid":28085},"url":"/user/foo/","user_options":{},"progress_url":"/hub/api/users/foo/server/progress"}}},{"kind":"user","name":"bar","admin":false,"groups":[],"server":null,"pending":null,"created":"2020-12-07T18:46:27.115528Z","last_activity":"2020-12-07T20:43:51.013613Z","servers":{}}]'
-    ),
-  });
+var mockAsyncRejection = () =>
+  jest.fn().mockImplementation(() => Promise.reject());
 
-  beforeEach(() => {
-    useSelector.mockImplementation((callback) => {
-      return callback(mockAppState());
-    });
-  });
+var mockAppState = () => ({
+  user_data: JSON.parse(
+    '[{"kind":"user","name":"foo","admin":true,"groups":[],"server":"/user/foo/","pending":null,"created":"2020-12-07T18:46:27.112695Z","last_activity":"2020-12-07T21:00:33.336354Z","servers":{"":{"name":"","last_activity":"2020-12-07T20:58:02.437408Z","started":"2020-12-07T20:58:01.508266Z","pending":null,"ready":true,"state":{"pid":28085},"url":"/user/foo/","user_options":{},"progress_url":"/hub/api/users/foo/server/progress"}}},{"kind":"user","name":"bar","admin":false,"groups":[],"server":null,"pending":null,"created":"2020-12-07T18:46:27.115528Z","last_activity":"2020-12-07T20:43:51.013613Z","servers":{}}]'
+  ),
+});
 
-  afterEach(() => {
-    useSelector.mockClear();
-  });
-
-  it("Renders users from props.user_data into table", () => {
-    let component = mount(serverDashboardJsx(mockAsync())),
-      userRows = component.find(".user-row");
-    expect(userRows.length).toBe(2);
-  });
-
-  it("Renders correctly the status of a single-user server", () => {
-    let component = mount(serverDashboardJsx(mockAsync())),
-      userRows = component.find(".user-row");
-    // Renders .stop-button when server is started
-    // Should be 1 since user foo is started
-    expect(userRows.at(0).find(".stop-button").length).toBe(1);
-    // Renders .start-button when server is stopped
-    // Should be 1 since user bar is stopped
-    expect(userRows.at(1).find(".start-button").length).toBe(1);
-  });
-
-  it("Invokes the startServer event on button click", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(serverDashboardJsx(callbackSpy)),
-      startBtn = component.find(".start-button");
-    startBtn.simulate("click");
-    expect(callbackSpy).toHaveBeenCalled();
-  });
-
-  it("Invokes the stopServer event on button click", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(serverDashboardJsx(callbackSpy)),
-      stopBtn = component.find(".stop-button");
-    stopBtn.simulate("click");
-    expect(callbackSpy).toHaveBeenCalled();
-  });
-
-  it("Invokes the shutdownHub event on button click", () => {
-    let callbackSpy = mockAsync(),
-      component = mount(serverDashboardJsx(callbackSpy)),
-      shutdownBtn = component.find("#shutdown-button").first();
-    shutdownBtn.simulate("click");
-    expect(callbackSpy).toHaveBeenCalled();
-  });
-
-  it("Sorts according to username", () => {
-    let component = mount(serverDashboardJsx(mockAsync())).find(
-        "ServerDashboard"
-      ),
-      handler = component.find("SortHandler").first();
-    handler.simulate("click");
-    let first = component.find(".user-row").first();
-    expect(first.html().includes("bar")).toBe(true);
-    handler.simulate("click");
-    first = component.find(".user-row").first();
-    expect(first.html().includes("foo")).toBe(true);
-  });
-
-  it("Sorts according to admin", () => {
-    let component = mount(serverDashboardJsx(mockAsync())).find(
-        "ServerDashboard"
-      ),
-      handler = component.find("SortHandler").at(1);
-    handler.simulate("click");
-    let first = component.find(".user-row").first();
-    expect(first.html().includes("admin")).toBe(true);
-    handler.simulate("click");
-    first = component.find(".user-row").first();
-    expect(first.html().includes("admin")).toBe(false);
-  });
-
-  it("Sorts according to last activity", () => {
-    let component = mount(serverDashboardJsx(mockAsync())).find(
-        "ServerDashboard"
-      ),
-      handler = component.find("SortHandler").at(2);
-    handler.simulate("click");
-    let first = component.find(".user-row").first();
-    // foo used most recently
-    expect(first.html().includes("foo")).toBe(true);
-    handler.simulate("click");
-    first = component.find(".user-row").first();
-    // invert sort - bar used least recently
-    expect(first.html().includes("bar")).toBe(true);
-  });
-
-  it("Sorts according to server status (running/not running)", () => {
-    let component = mount(serverDashboardJsx(mockAsync())).find(
-        "ServerDashboard"
-      ),
-      handler = component.find("SortHandler").at(3);
-    handler.simulate("click");
-    let first = component.find(".user-row").first();
-    // foo running
-    expect(first.html().includes("foo")).toBe(true);
-    handler.simulate("click");
-    first = component.find(".user-row").first();
-    // invert sort - bar not running
-    expect(first.html().includes("bar")).toBe(true);
-  });
-
-  it("Renders nothing if required data is not available", () => {
-    useSelector.mockImplementation((callback) => {
-      return callback({});
-    });
-    let component = mount(serverDashboardJsx(jest.fn()));
-    expect(component.html()).toBe("<div></div>");
+beforeEach(() => {
+  useSelector.mockImplementation((callback) => {
+    return callback(mockAppState());
   });
 });
+
+afterEach(() => {
+  useSelector.mockClear();
+});
+
+test("Renders", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  expect(screen.getByTestId("container")).toBeVisible();
+});
+
+test("Renders users from props.user_data into table", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let foo = screen.getByText("foo");
+  let bar = screen.getByText("bar");
+
+  expect(foo).toBeVisible();
+  expect(bar).toBeVisible();
+});
+
+test("Renders correctly the status of a single-user server", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let start = screen.getByText("Start Server");
+  let stop = screen.getByText("Stop Server");
+
+  expect(start).toBeVisible();
+  expect(stop).toBeVisible();
+});
+
+test("Invokes the startServer event on button click", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let start = screen.getByText("Start Server");
+
+  await act(async () => {
+    fireEvent.click(start);
+  });
+
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Invokes the stopServer event on button click", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let stop = screen.getByText("Stop Server");
+
+  await act(async () => {
+    fireEvent.click(stop);
+  });
+
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Invokes the shutdownHub event on button click", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let shutdown = screen.getByText("Shutdown Hub");
+
+  await act(async () => {
+    fireEvent.click(shutdown);
+  });
+
+  expect(callbackSpy).toHaveBeenCalled();
+});
+
+test("Sorts according to username", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let handler = screen.getByTestId("user-sort");
+  fireEvent.click(handler);
+
+  let first = screen.getAllByTestId("user-row-name")[0];
+  expect(first.textContent).toBe("bar");
+
+  fireEvent.click(handler);
+
+  first = screen.getAllByTestId("user-row-name")[0];
+  expect(first.textContent).toBe("foo");
+});
+
+test("Sorts according to admin", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let handler = screen.getByTestId("admin-sort");
+  fireEvent.click(handler);
+
+  let first = screen.getAllByTestId("user-row-admin")[0];
+  expect(first.textContent).toBe("admin");
+
+  fireEvent.click(handler);
+
+  first = screen.getAllByTestId("user-row-admin")[0];
+  expect(first.textContent).toBe("");
+});
+
+test("Sorts according to last activity", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let handler = screen.getByTestId("last-activity-sort");
+  fireEvent.click(handler);
+
+  let first = screen.getAllByTestId("user-row-name")[0];
+  expect(first.textContent).toBe("foo");
+
+  fireEvent.click(handler);
+
+  first = screen.getAllByTestId("user-row-name")[0];
+  expect(first.textContent).toBe("bar");
+});
+
+test("Sorts according to server status (running/not running)", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let handler = screen.getByTestId("running-status-sort");
+  fireEvent.click(handler);
+
+  let first = screen.getAllByTestId("user-row-name")[0];
+  expect(first.textContent).toBe("foo");
+
+  fireEvent.click(handler);
+
+  first = screen.getAllByTestId("user-row-name")[0];
+  expect(first.textContent).toBe("bar");
+});
+
+test("Renders nothing if required data is not available", async () => {
+  useSelector.mockImplementation((callback) => {
+    return callback({});
+  });
+
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let noShow = screen.getByTestId("no-show");
+
+  expect(noShow).toBeVisible();
+});
+
+test("Shows a UI error dialogue when start all servers fails", async () => {
+  let spy = mockAsync();
+  let rejectSpy = mockAsyncRejection;
+
+  await act(async () => {
+    render(
+      <Provider store={createStore(() => {}, {})}>
+        <HashRouter>
+          <Switch>
+            <ServerDashboard
+              updateUsers={spy}
+              shutdownHub={spy}
+              startServer={spy}
+              stopServer={spy}
+              startAll={rejectSpy}
+              stopAll={spy}
+            />
+          </Switch>
+        </HashRouter>
+      </Provider>
+    );
+  });
+
+  let startAll = screen.getByTestId("start-all");
+
+  await act(async () => {
+    fireEvent.click(startAll);
+  });
+
+  let errorDialog = screen.getByText("Failed to start servers.");
+
+  expect(errorDialog).toBeVisible();
+});
+
+test("Shows a UI error dialogue when stop all servers fails", async () => {
+  let spy = mockAsync();
+  let rejectSpy = mockAsyncRejection;
+
+  await act(async () => {
+    render(
+      <Provider store={createStore(() => {}, {})}>
+        <HashRouter>
+          <Switch>
+            <ServerDashboard
+              updateUsers={spy}
+              shutdownHub={spy}
+              startServer={spy}
+              stopServer={spy}
+              startAll={spy}
+              stopAll={rejectSpy}
+            />
+          </Switch>
+        </HashRouter>
+      </Provider>
+    );
+  });
+
+  let stopAll = screen.getByTestId("stop-all");
+
+  await act(async () => {
+    fireEvent.click(stopAll);
+  });
+
+  let errorDialog = screen.getByText("Failed to stop servers.");
+
+  expect(errorDialog).toBeVisible();
+});
+
+test("Shows a UI error dialogue when start user server fails", async () => {
+  let spy = mockAsync();
+  let rejectSpy = mockAsyncRejection();
+
+  await act(async () => {
+    render(
+      <Provider store={createStore(() => {}, {})}>
+        <HashRouter>
+          <Switch>
+            <ServerDashboard
+              updateUsers={spy}
+              shutdownHub={spy}
+              startServer={rejectSpy}
+              stopServer={spy}
+              startAll={spy}
+              stopAll={spy}
+            />
+          </Switch>
+        </HashRouter>
+      </Provider>
+    );
+  });
+
+  let start = screen.getByText("Start Server");
+
+  await act(async () => {
+    fireEvent.click(start);
+  });
+
+  let errorDialog = screen.getByText("Failed to start server.");
+
+  expect(errorDialog).toBeVisible();
+});
+
+test("Shows a UI error dialogue when start user server returns an improper status code", async () => {
+  let spy = mockAsync();
+  let rejectSpy = mockAsync({ status: 403 });
+
+  await act(async () => {
+    render(
+      <Provider store={createStore(() => {}, {})}>
+        <HashRouter>
+          <Switch>
+            <ServerDashboard
+              updateUsers={spy}
+              shutdownHub={spy}
+              startServer={rejectSpy}
+              stopServer={spy}
+              startAll={spy}
+              stopAll={spy}
+            />
+          </Switch>
+        </HashRouter>
+      </Provider>
+    );
+  });
+
+  let start = screen.getByText("Start Server");
+
+  await act(async () => {
+    fireEvent.click(start);
+  });
+
+  let errorDialog = screen.getByText("Failed to start server.");
+
+  expect(errorDialog).toBeVisible();
+});
+
+test("Shows a UI error dialogue when stop user servers fails", async () => {
+  let spy = mockAsync();
+  let rejectSpy = mockAsyncRejection();
+
+  await act(async () => {
+    render(
+      <Provider store={createStore(() => {}, {})}>
+        <HashRouter>
+          <Switch>
+            <ServerDashboard
+              updateUsers={spy}
+              shutdownHub={spy}
+              startServer={spy}
+              stopServer={rejectSpy}
+              startAll={spy}
+              stopAll={spy}
+            />
+          </Switch>
+        </HashRouter>
+      </Provider>
+    );
+  });
+
+  let stop = screen.getByText("Stop Server");
+
+  await act(async () => {
+    fireEvent.click(stop);
+  });
+
+  let errorDialog = screen.getByText("Failed to stop server.");
+
+  expect(errorDialog).toBeVisible();
+});
+
+test("Shows a UI error dialogue when stop user server returns an improper status code", async () => {
+  let spy = mockAsync();
+  let rejectSpy = mockAsync({ status: 403 });
+
+  await act(async () => {
+    render(
+      <Provider store={createStore(() => {}, {})}>
+        <HashRouter>
+          <Switch>
+            <ServerDashboard
+              updateUsers={spy}
+              shutdownHub={spy}
+              startServer={spy}
+              stopServer={rejectSpy}
+              startAll={spy}
+              stopAll={spy}
+            />
+          </Switch>
+        </HashRouter>
+      </Provider>
+    );
+  });
+
+  let stop = screen.getByText("Stop Server");
+
+  await act(async () => {
+    fireEvent.click(stop);
+  });
+
+  let errorDialog = screen.getByText("Failed to stop server.");
+
+  expect(errorDialog).toBeVisible();
+});

jsx/src/util/jhapiUtil.js

@@ -1,5 +1,7 @@
 export const jhapiRequest = (endpoint, method, data) => {
-  return fetch("/hub/api" + endpoint, {
+  let base_url = window.base_url,
+    api_url = `${base_url}hub/api`;
+  return fetch(api_url + endpoint, {
     method: method,
     json: true,
     headers: {

jsx/src/util/withAPI.js

@@ -36,13 +36,14 @@ const withAPI = withProps(() => ({
     jhapiRequest("/users/" + username, "GET")
       .then((data) => data.status)
       .then((data) => (data > 200 ? false : true)),
-  failRegexEvent: () =>
-    alert(
-      "Cannot change username - either contains special characters or is too short."
-    ),
-  noChangeEvent: () => {
-    returns;
+  // Temporarily Unused
+  failRegexEvent: () => {
+    return null;
   },
+  noChangeEvent: () => {
+    return null;
+  },
+  //
   refreshGroupsData: () =>
     jhapiRequest("/groups", "GET").then((data) => data.json()),
   refreshUserData: () =>

jsx/yarn.lock

@@ -935,6 +935,14 @@
     "@babel/plugin-transform-react-jsx-development" "^7.12.7"
     "@babel/plugin-transform-react-pure-annotations" "^7.12.1"
 
+"@babel/runtime-corejs3@^7.10.2":
+  version "7.16.3"
+  resolved "https://registry.yarnpkg.com/@babel/runtime-corejs3/-/runtime-corejs3-7.16.3.tgz#1e25de4fa994c57c18e5fdda6cc810dac70f5590"
+  integrity sha512-IAdDC7T0+wEB4y2gbIL0uOXEYpiZEeuFUTVbdGq+UwCcF35T/tS8KrmMomEwEc5wBbyfH3PJVpTSUqrhPDXFcQ==
+  dependencies:
+    core-js-pure "^3.19.0"
+    regenerator-runtime "^0.13.4"
+
 "@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.12.1", "@babel/runtime@^7.4.2", "@babel/runtime@^7.5.5", "@babel/runtime@^7.6.3", "@babel/runtime@^7.7.6", "@babel/runtime@^7.8.4", "@babel/runtime@^7.8.7":
   version "7.12.5"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.12.5.tgz#410e7e487441e1b360c29be715d870d9b985882e"
@@ -942,6 +950,13 @@
   dependencies:
     regenerator-runtime "^0.13.4"
 
+"@babel/runtime@^7.10.2", "@babel/runtime@^7.12.5", "@babel/runtime@^7.9.2":
+  version "7.16.3"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.16.3.tgz#b86f0db02a04187a3c17caa77de69840165d42d5"
+  integrity sha512-WBwekcqacdY2e9AF/Q7WLFUWmdJGJTkbjqTjoMDgXkVZ3ZRUvOPsLb5KdwISoQVsbP+DQzVZW4Zhci0DvpbNTQ==
+  dependencies:
+    regenerator-runtime "^0.13.4"
+
 "@babel/template@^7.10.4":
   version "7.10.4"
   resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.10.4.tgz#3251996c4200ebc71d1a8fc405fba940f36ba278"
@@ -1224,6 +1239,17 @@
     "@types/yargs" "^15.0.0"
     chalk "^4.0.0"
 
+"@jest/types@^27.4.2":
+  version "27.4.2"
+  resolved "https://registry.yarnpkg.com/@jest/types/-/types-27.4.2.tgz#96536ebd34da6392c2b7c7737d693885b5dd44a5"
+  integrity sha512-j35yw0PMTPpZsUoOBiuHzr1zTYoad1cVIE0ajEjcrJONxxrko/IRGKkXx3os0Nsi4Hu3+5VmDbVfq5WhG/pWAg==
+  dependencies:
+    "@types/istanbul-lib-coverage" "^2.0.0"
+    "@types/istanbul-reports" "^3.0.0"
+    "@types/node" "*"
+    "@types/yargs" "^16.0.0"
+    chalk "^4.0.0"
+
 "@popperjs/core@^2.5.3":
   version "2.5.4"
   resolved "https://registry.yarnpkg.com/@popperjs/core/-/core-2.5.4.tgz#de25b5da9f727985a3757fd59b5d028aba75841a"
@@ -1256,6 +1282,55 @@
   dependencies:
     "@sinonjs/commons" "^1.7.0"
 
+"@testing-library/dom@^8.0.0":
+  version "8.11.1"
+  resolved "https://registry.yarnpkg.com/@testing-library/dom/-/dom-8.11.1.tgz#03fa2684aa09ade589b460db46b4c7be9fc69753"
+  integrity sha512-3KQDyx9r0RKYailW2MiYrSSKEfH0GTkI51UGEvJenvcoDoeRYs0PZpi2SXqtnMClQvCqdtTTpOfFETDTVADpAg==
+  dependencies:
+    "@babel/code-frame" "^7.10.4"
+    "@babel/runtime" "^7.12.5"
+    "@types/aria-query" "^4.2.0"
+    aria-query "^5.0.0"
+    chalk "^4.1.0"
+    dom-accessibility-api "^0.5.9"
+    lz-string "^1.4.4"
+    pretty-format "^27.0.2"
+
+"@testing-library/jest-dom@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@testing-library/jest-dom/-/jest-dom-5.15.1.tgz#4c49ba4d244f235aec53f0a83498daeb4ee06c33"
+  integrity sha512-kmj8opVDRE1E4GXyLlESsQthCXK7An28dFWxhiMwD7ZUI7ZxA6sjdJRxLerD9Jd8cHX4BDc1jzXaaZKqzlUkvg==
+  dependencies:
+    "@babel/runtime" "^7.9.2"
+    "@types/testing-library__jest-dom" "^5.9.1"
+    aria-query "^4.2.2"
+    chalk "^3.0.0"
+    css "^3.0.0"
+    css.escape "^1.5.1"
+    dom-accessibility-api "^0.5.6"
+    lodash "^4.17.15"
+    redent "^3.0.0"
+
+"@testing-library/react@^12.1.2":
+  version "12.1.2"
+  resolved "https://registry.yarnpkg.com/@testing-library/react/-/react-12.1.2.tgz#f1bc9a45943461fa2a598bb4597df1ae044cfc76"
+  integrity sha512-ihQiEOklNyHIpo2Y8FREkyD1QAea054U0MVbwH1m8N9TxeFz+KoJ9LkqoKqJlzx2JDm56DVwaJ1r36JYxZM05g==
+  dependencies:
+    "@babel/runtime" "^7.12.5"
+    "@testing-library/dom" "^8.0.0"
+
+"@testing-library/user-event@^13.5.0":
+  version "13.5.0"
+  resolved "https://registry.yarnpkg.com/@testing-library/user-event/-/user-event-13.5.0.tgz#69d77007f1e124d55314a2b73fd204b333b13295"
+  integrity sha512-5Kwtbo3Y/NowpkbRuSepbyMFkZmHgD+vPzYB/RJ4oxt5Gj/avFFBYjhw27cqSVPVw/3a67NK1PbiIr9k4Gwmdg==
+  dependencies:
+    "@babel/runtime" "^7.12.5"
+
+"@types/aria-query@^4.2.0":
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/@types/aria-query/-/aria-query-4.2.2.tgz#ed4e0ad92306a704f9fb132a0cfcf77486dbe2bc"
+  integrity sha512-HnYpAE1Y6kRyKM/XkEuiRQhTHvkzMBurTHnpFLYLBGPIylZNPs9jJcuOOYWxPLJCSEtmZT0Y8rHDokKN7rRTig==
+
 "@types/babel__core@^7.0.0", "@types/babel__core@^7.1.7":
   version "7.1.12"
   resolved "https://registry.yarnpkg.com/@types/babel__core/-/babel__core-7.1.12.tgz#4d8e9e51eb265552a7e4f1ff2219ab6133bdfb2d"
@@ -1354,6 +1429,14 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
+"@types/jest@*":
+  version "27.0.3"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-27.0.3.tgz#0cf9dfe9009e467f70a342f0f94ead19842a783a"
+  integrity sha512-cmmwv9t7gBYt7hNKH5Spu7Kuu/DotGa+Ff+JGRKZ4db5eh8PnKS4LuebJ3YLUoyOyIHraTGyULn23YtEAm0VSg==
+  dependencies:
+    jest-diff "^27.0.0"
+    pretty-format "^27.0.0"
+
 "@types/json-schema@*", "@types/json-schema@^7.0.5", "@types/json-schema@^7.0.6":
   version "7.0.6"
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.6.tgz#f4c7ec43e81b319a9815115031709f26987891f0"
@@ -1411,6 +1494,13 @@
   resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-2.0.0.tgz#7036640b4e21cc2f259ae826ce843d277dad8cff"
   integrity sha512-RJJrrySY7A8havqpGObOB4W92QXKJo63/jFLLgpvOtsGUqbQZ9Sbgl35KMm1DjC6j7AvmmU2bIno+3IyEaemaw==
 
+"@types/testing-library__jest-dom@^5.9.1":
+  version "5.14.2"
+  resolved "https://registry.yarnpkg.com/@types/testing-library__jest-dom/-/testing-library__jest-dom-5.14.2.tgz#564fb2b2dc827147e937a75b639a05d17ce18b44"
+  integrity sha512-vehbtyHUShPxIa9SioxDwCvgxukDMH//icJG90sXQBUm5lJOHLT5kNeU9tnivhnA/TkOFMzGIXN2cTc4hY8/kg==
+  dependencies:
+    "@types/jest" "*"
+
 "@types/warning@^3.0.0":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/warning/-/warning-3.0.0.tgz#0d2501268ad8f9962b740d387c4654f5f8e23e52"
@@ -1428,6 +1518,13 @@
   dependencies:
     "@types/yargs-parser" "*"
 
+"@types/yargs@^16.0.0":
+  version "16.0.4"
+  resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-16.0.4.tgz#26aad98dd2c2a38e421086ea9ad42b9e51642977"
+  integrity sha512-T8Yc9wt/5LbJyCaLiHPReJa0kApcIgJ7Bn735GjItUfh08Z1pJvu8QZqb9s+mMvKV6WUQRV7K2R46YbjMXTTJw==
+  dependencies:
+    "@types/yargs-parser" "*"
+
 "@webassemblyjs/ast@1.9.0":
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.9.0.tgz#bd850604b4042459a5a41cd7d338cbed695ed964"
@@ -1573,20 +1670,30 @@
     "@webassemblyjs/wast-parser" "1.9.0"
     "@xtuc/long" "4.2.2"
 
-"@wojtekmaj/enzyme-adapter-react-17@^0.4.1":
-  version "0.4.1"
-  resolved "https://registry.yarnpkg.com/@wojtekmaj/enzyme-adapter-react-17/-/enzyme-adapter-react-17-0.4.1.tgz#a9d4a2873025c6de19e1142ca076661bac69f587"
-  integrity sha512-WZr8i4C6WVDV7Mb8sbm7GdlEPmk1f+xOMjUKThqrkWgwsfvu90zJyyX54wyAvsS91sjtKZ0JipGj2cJnEDaxPA==
+"@wojtekmaj/enzyme-adapter-react-17@^0.6.5":
+  version "0.6.5"
+  resolved "https://registry.yarnpkg.com/@wojtekmaj/enzyme-adapter-react-17/-/enzyme-adapter-react-17-0.6.5.tgz#1925e17aaea7089e7ec66c7c35e5771e49b6bf7e"
+  integrity sha512-ChIObUiXXYUiqzXPqOai+p6KF5dlbItpDDYsftUOQiAiygbMDlLeJIjynC6ZrJIa2U2MpRp4YJmtR2GQyIHjgA==
   dependencies:
-    enzyme-adapter-utils "^1.14.0"
-    enzyme-shallow-equal "^1.0.4"
-    has "^1.0.3"
+    "@wojtekmaj/enzyme-adapter-utils" "^0.1.1"
+    enzyme-shallow-equal "^1.0.0"
+    has "^1.0.0"
     object.assign "^4.1.0"
-    object.values "^1.1.1"
-    prop-types "^15.7.2"
-    react-is "^17.0.0"
+    object.values "^1.1.0"
+    prop-types "^15.7.0"
+    react-is "^17.0.2"
     react-test-renderer "^17.0.0"
-    semver "^5.7.0"
+
+"@wojtekmaj/enzyme-adapter-utils@^0.1.1":
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/@wojtekmaj/enzyme-adapter-utils/-/enzyme-adapter-utils-0.1.1.tgz#17773cf264570fbcfc0d33bb74e4002c17f2f1ec"
+  integrity sha512-bNPWtN/d8huKOkC6j1E3EkSamnRrHHT7YuR6f9JppAQqtoAm3v4/vERe4J14jQKmHLCyEBHXrlgb7H6l817hVg==
+  dependencies:
+    function.prototype.name "^1.1.0"
+    has "^1.0.0"
+    object.assign "^4.1.0"
+    object.fromentries "^2.0.0"
+    prop-types "^15.7.0"
 
 "@xtuc/ieee754@^1.2.0":
   version "1.2.0"
@@ -1639,21 +1746,6 @@ acorn@^8.0.4:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.0.4.tgz#7a3ae4191466a6984eee0fe3407a4f3aa9db8354"
   integrity sha512-XNP0PqF1XD19ZlLKvB7cMmnZswW4C/03pRHgirB30uSJTaS3A3V1/P4sS3HPvFmjoriPCJQs+JDSbm4bL1TxGQ==
 
-airbnb-prop-types@^2.16.0:
-  version "2.16.0"
-  resolved "https://registry.yarnpkg.com/airbnb-prop-types/-/airbnb-prop-types-2.16.0.tgz#b96274cefa1abb14f623f804173ee97c13971dc2"
-  integrity sha512-7WHOFolP/6cS96PhKNrslCLMYAI8yB1Pp6u6XmxozQOiZbsI5ycglZr5cHhBFfuRcQQjzCMith5ZPZdYiJCxUg==
-  dependencies:
-    array.prototype.find "^2.1.1"
-    function.prototype.name "^1.1.2"
-    is-regex "^1.1.0"
-    object-is "^1.1.2"
-    object.assign "^4.1.0"
-    object.entries "^1.1.2"
-    prop-types "^15.7.2"
-    prop-types-exact "^1.2.0"
-    react-is "^16.13.1"
-
 ajv-errors@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/ajv-errors/-/ajv-errors-1.0.1.tgz#f35986aceb91afadec4102fbd85014950cefa64d"
@@ -1721,6 +1813,11 @@ ansi-regex@^5.0.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz#388539f55179bf39339c81af30a654d69f87cb75"
   integrity sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==
 
+ansi-regex@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.1.tgz#082cb2c89c9fe8659a311a53bd6a4dc5301db304"
+  integrity sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==
+
 ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
@@ -1735,6 +1832,11 @@ ansi-styles@^4.0.0, ansi-styles@^4.1.0:
   dependencies:
     color-convert "^2.0.1"
 
+ansi-styles@^5.0.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-5.2.0.tgz#07449690ad45777d1924ac2abb2fc8895dba836b"
+  integrity sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==
+
 anymatch@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-2.0.0.tgz#bcb24b4f37934d9aa7ac17b4adaf89e7c76ef2eb"
@@ -1758,6 +1860,19 @@ argparse@^1.0.7:
   dependencies:
     sprintf-js "~1.0.2"
 
+aria-query@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/aria-query/-/aria-query-4.2.2.tgz#0d2ca6c9aceb56b8977e9fed6aed7e15bbd2f83b"
+  integrity sha512-o/HelwhuKpTj/frsOsbNLNgnNGVIFsVP/SW2BSF14gVl7kAfMOJ6/8wUAUvG1R1NHKrfG+2sHZTu0yauT1qBrA==
+  dependencies:
+    "@babel/runtime" "^7.10.2"
+    "@babel/runtime-corejs3" "^7.10.2"
+
+aria-query@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/aria-query/-/aria-query-5.0.0.tgz#210c21aaf469613ee8c9a62c7f86525e058db52c"
+  integrity sha512-V+SM7AbUwJ+EBnB8+DXs0hPZHO0W6pqBcc0dW90OwtVG02PswOu/teuARoLQjdDOH+t9pJgGnW5/Qmouf3gPJg==
+
 arr-diff@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-4.0.0.tgz#d6461074febfec71e7e15235761a329a5dc7c520"
@@ -1816,14 +1931,6 @@ array-unique@^0.3.2:
   resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.3.2.tgz#a894b75d4bc4f6cd679ef3244a9fd8f46ae2d428"
   integrity sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=
 
-array.prototype.find@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/array.prototype.find/-/array.prototype.find-2.1.1.tgz#3baca26108ca7affb08db06bf0be6cb3115a969c"
-  integrity sha512-mi+MYNJYLTx2eNYy+Yh6raoQacCsNeeMUaspFPh9Y141lFSsWxxB8V9mM2ye+eqiRs917J6/pJ4M9ZPzenWckA==
-  dependencies:
-    define-properties "^1.1.3"
-    es-abstract "^1.17.4"
-
 array.prototype.flat@^1.2.3:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/array.prototype.flat/-/array.prototype.flat-1.2.4.tgz#6ef638b43312bd401b4c6199fdec7e2dc9e9a123"
@@ -2217,6 +2324,14 @@ chalk@^2.0.0, chalk@^2.4.2:
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
+chalk@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-3.0.0.tgz#3f73c2bf526591f574cc492c51e2456349f844e4"
+  integrity sha512-4D3B6Wf41KOYRFdszmDqMCGq5VV/uMAB273JILmO+3jAlh8X4qDtdtgCR3fxtbLEMzSx22QdhnDcJvu2u1fVwg==
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
 chalk@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.0.tgz#4e14870a618d9e2edd97dd8345fd9d9dc315646a"
@@ -2225,6 +2340,14 @@ chalk@^4.0.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
+chalk@^4.1.0:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.2.tgz#aac4e2b7734a740867aeb16bf02aad556a1e7a01"
+  integrity sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
 change-emitter@^0.1.2:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/change-emitter/-/change-emitter-0.1.6.tgz#e8b2fe3d7f1ab7d69a32199aff91ea6931409515"
@@ -2469,6 +2592,11 @@ core-js-compat@^3.8.0:
     browserslist "^4.16.0"
     semver "7.0.0"
 
+core-js-pure@^3.19.0:
+  version "3.19.2"
+  resolved "https://registry.yarnpkg.com/core-js-pure/-/core-js-pure-3.19.2.tgz#26b5bfb503178cff6e3e115bc2ba6c6419383680"
+  integrity sha512-5LkcgQEy8pFeVnd/zomkUBSwnmIxuF1C8E9KrMAbOc8f34IBT9RGvTYeNDdp1PnvMJrrVhvk1hg/yVV5h/znlg==
+
 core-js@^1.0.0:
   version "1.2.7"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
@@ -2533,6 +2661,20 @@ css-what@^4.0.0:
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-4.0.0.tgz#35e73761cab2eeb3d3661126b23d7aa0e8432233"
   integrity sha512-teijzG7kwYfNVsUh2H/YN62xW3KK9YhXEgSlbxMlcyjPNvdKJqFx5lrwlJgoFP1ZHlB89iGDlo/JyshKeRhv5A==
 
+css.escape@^1.5.1:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/css.escape/-/css.escape-1.5.1.tgz#42e27d4fa04ae32f931a4b4d4191fa9cddee97cb"
+  integrity sha1-QuJ9T6BK4y+TGktNQZH6nN3ul8s=
+
+css@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/css/-/css-3.0.0.tgz#4447a4d58fdd03367c516ca9f64ae365cee4aa5d"
+  integrity sha512-DG9pFfwOrzc+hawpmqX/dHYHJG+Bsdb0klhyi1sDneOgGOXy9wQIC8hzyVp1e4NRYDBdxcylvywPkkXCHAzTyQ==
+  dependencies:
+    inherits "^2.0.4"
+    source-map "^0.6.1"
+    source-map-resolve "^0.6.0"
+
 cssesc@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/cssesc/-/cssesc-3.0.0.tgz#37741919903b868565e1c09ea747445cd18983ee"
@@ -2719,6 +2861,11 @@ diff-sequences@^26.6.2:
   resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-26.6.2.tgz#48ba99157de1923412eed41db6b6d4aa9ca7c0b1"
   integrity sha512-Mv/TDa3nZ9sbc5soK+OoA74BsS3mL37yixCvUAQkiuA4Wz6YtwP/K47n2rv2ovzHZvoiQeA5FTQOschKkEwB0Q==
 
+diff-sequences@^27.4.0:
+  version "27.4.0"
+  resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-27.4.0.tgz#d783920ad8d06ec718a060d00196dfef25b132a5"
+  integrity sha512-YqiQzkrsmHMH5uuh8OdQFU9/ZpADnwzml8z0O5HvRNda+5UZsaX/xN+AAxfR2hWq1Y7HZnAzO9J5lJXOuDz2Ww==
+
 discontinuous-range@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/discontinuous-range/-/discontinuous-range-1.0.0.tgz#e38331f0844bba49b9a9cb71c771585aab1bc65a"
@@ -2758,6 +2905,11 @@ doctrine@^3.0.0:
   dependencies:
     esutils "^2.0.2"
 
+dom-accessibility-api@^0.5.6, dom-accessibility-api@^0.5.9:
+  version "0.5.10"
+  resolved "https://registry.yarnpkg.com/dom-accessibility-api/-/dom-accessibility-api-0.5.10.tgz#caa6d08f60388d0bb4539dd75fe458a9a1d0014c"
+  integrity sha512-Xu9mD0UjrJisTmv7lmVSDMagQcU9R5hwAbxsaAE/35XPnPLJobbuREfV/rraiSaEj/UOvgrzQs66zyTWTlyd+g==
+
 dom-helpers@^5.0.1, dom-helpers@^5.1.2, dom-helpers@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/dom-helpers/-/dom-helpers-5.2.0.tgz#57fd054c5f8f34c52a3eeffdb7e7e93cd357d95b"
@@ -2889,20 +3041,7 @@ entities@^2.0.0, entities@~2.1.0:
   resolved "https://registry.yarnpkg.com/entities/-/entities-2.1.0.tgz#992d3129cf7df6870b96c57858c249a120f8b8b5"
   integrity sha512-hCx1oky9PFrJ611mf0ifBLBRW8lUUVRlFolb5gWRfIELabBlbp9xZvrqZLZAs+NxFnbfQoeGd8wDkygjg7U85w==
 
-enzyme-adapter-utils@^1.14.0:
-  version "1.14.0"
-  resolved "https://registry.yarnpkg.com/enzyme-adapter-utils/-/enzyme-adapter-utils-1.14.0.tgz#afbb0485e8033aa50c744efb5f5711e64fbf1ad0"
-  integrity sha512-F/z/7SeLt+reKFcb7597IThpDp0bmzcH1E9Oabqv+o01cID2/YInlqHbFl7HzWBl4h3OdZYedtwNDOmSKkk0bg==
-  dependencies:
-    airbnb-prop-types "^2.16.0"
-    function.prototype.name "^1.1.3"
-    has "^1.0.3"
-    object.assign "^4.1.2"
-    object.fromentries "^2.0.3"
-    prop-types "^15.7.2"
-    semver "^5.7.1"
-
-enzyme-shallow-equal@^1.0.1, enzyme-shallow-equal@^1.0.4:
+enzyme-shallow-equal@^1.0.0, enzyme-shallow-equal@^1.0.1:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/enzyme-shallow-equal/-/enzyme-shallow-equal-1.0.4.tgz#b9256cb25a5f430f9bfe073a84808c1d74fced2e"
   integrity sha512-MttIwB8kKxypwHvRynuC3ahyNc+cFbR8mjVIltnmzQ0uKGqmsfO4bfBuLxb0beLNPhjblUEYvEbsg+VSygvF1Q==
@@ -2952,7 +3091,7 @@ error-ex@^1.3.1:
   dependencies:
     is-arrayish "^0.2.1"
 
-es-abstract@^1.17.0-next.1, es-abstract@^1.17.4:
+es-abstract@^1.17.0-next.1:
   version "1.17.7"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.17.7.tgz#a4de61b2f66989fc7421676c1cb9787573ace54c"
   integrity sha512-VBl/gnfcJ7OercKA9MVaegWsBHFjV492syMudcnQZvt/Dw8ezpcOHYZXa/J96O8vx+g4x65YKhxOwDUh63aS5g==
@@ -2987,6 +3126,32 @@ es-abstract@^1.18.0-next.1:
     string.prototype.trimend "^1.0.1"
     string.prototype.trimstart "^1.0.1"
 
+es-abstract@^1.19.0, es-abstract@^1.19.1:
+  version "1.19.1"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.19.1.tgz#d4885796876916959de78edaa0df456627115ec3"
+  integrity sha512-2vJ6tjA/UfqLm2MPs7jxVybLoB8i1t1Jd9R3kISld20sIxPcTbLuggQOUxeWeAvIUkduv/CfMjuh4WmiXr2v9w==
+  dependencies:
+    call-bind "^1.0.2"
+    es-to-primitive "^1.2.1"
+    function-bind "^1.1.1"
+    get-intrinsic "^1.1.1"
+    get-symbol-description "^1.0.0"
+    has "^1.0.3"
+    has-symbols "^1.0.2"
+    internal-slot "^1.0.3"
+    is-callable "^1.2.4"
+    is-negative-zero "^2.0.1"
+    is-regex "^1.1.4"
+    is-shared-array-buffer "^1.0.1"
+    is-string "^1.0.7"
+    is-weakref "^1.0.1"
+    object-inspect "^1.11.0"
+    object-keys "^1.1.1"
+    object.assign "^4.1.2"
+    string.prototype.trimend "^1.0.4"
+    string.prototype.trimstart "^1.0.4"
+    unbox-primitive "^1.0.1"
+
 es-to-primitive@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.1.tgz#e55cd4c9cdc188bcefb03b366c736323fc5c898a"
@@ -3499,9 +3664,9 @@ flatted@^3.1.0:
   integrity sha512-zAoAQiudy+r5SvnSw3KJy5os/oRJYHzrzja/tBDqrZtNhUw8bt6y8OBzMWcjWr+8liV8Eb6yOhw8WZ7VFZ5ZzA==
 
 follow-redirects@^1.0.0:
-  version "1.13.0"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
-  integrity sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA==
+  version "1.14.7"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.14.7.tgz#2004c02eb9436eee9a21446a6477debf17e81685"
+  integrity sha512-+hbxoLbFMbRKDwohX8GkTataGqO6Jb7jGwpAlwgy2bIz25XtRm7KEzJM76R1WiNT5SwZkX4Y75SwBolkpmE7iQ==
 
 for-in@^1.0.2:
   version "1.0.2"
@@ -3562,7 +3727,17 @@ function-bind@^1.1.1:
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
   integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
 
-function.prototype.name@^1.1.2, function.prototype.name@^1.1.3:
+function.prototype.name@^1.1.0:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/function.prototype.name/-/function.prototype.name-1.1.5.tgz#cce0505fe1ffb80503e6f9e46cc64e46a12a9621"
+  integrity sha512-uN7m/BzVKQnCUF/iW8jYea67v++2u7m5UgENbHRtdDVclOUP+FMPlCNdmk0h/ysGyo2tavMJEDqJAkJdRa1vMA==
+  dependencies:
+    call-bind "^1.0.2"
+    define-properties "^1.1.3"
+    es-abstract "^1.19.0"
+    functions-have-names "^1.2.2"
+
+function.prototype.name@^1.1.2:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/function.prototype.name/-/function.prototype.name-1.1.3.tgz#0bb034bb308e7682826f215eb6b2ae64918847fe"
   integrity sha512-H51qkbNSp8mtkJt+nyW1gyStBiKZxfRqySNUR99ylq6BPXHKI4SEvIlTKp4odLfjRKJV04DFWMU3G/YRlQOsag==
@@ -3577,7 +3752,7 @@ functional-red-black-tree@^1.0.1:
   resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
   integrity sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
 
-functions-have-names@^1.2.1:
+functions-have-names@^1.2.1, functions-have-names@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/functions-have-names/-/functions-have-names-1.2.2.tgz#98d93991c39da9361f8e50b337c4f6e41f120e21"
   integrity sha512-bLgc3asbWdwPbx2mNk2S49kmJCuQeu0nfmaOgbs8WIyzzkw3r4htszdIi9Q9EMezDPTYuJx2wvjZ/EwgAthpnA==
@@ -3610,6 +3785,15 @@ get-intrinsic@^1.0.1, get-intrinsic@^1.0.2:
     has "^1.0.3"
     has-symbols "^1.0.1"
 
+get-intrinsic@^1.1.0, get-intrinsic@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/get-intrinsic/-/get-intrinsic-1.1.1.tgz#15f59f376f855c446963948f0d24cd3637b4abc6"
+  integrity sha512-kWZrnVM42QCiEA2Ig1bG8zjoIMOgxWwYCEeNdwY6Tv/cOSeGpcoX4pXHfKUxNKVoArnrEr2e9srnAxxGIraS9Q==
+  dependencies:
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    has-symbols "^1.0.1"
+
 get-package-type@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/get-package-type/-/get-package-type-0.1.0.tgz#8de2d803cff44df3bc6c456e6668b36c3926e11a"
@@ -3629,6 +3813,14 @@ get-stream@^5.0.0:
   dependencies:
     pump "^3.0.0"
 
+get-symbol-description@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/get-symbol-description/-/get-symbol-description-1.0.0.tgz#7fdb81c900101fbd564dd5f1a30af5aadc1e58d6"
+  integrity sha512-2EmdH1YvIQiZpltCNgkuiUnyukzxM/R6NDJX31Ke3BG1Nq5b0S2PhX59UKi9vZpPDQVdqn+1IcaAwnzTT5vCjw==
+  dependencies:
+    call-bind "^1.0.2"
+    get-intrinsic "^1.1.1"
+
 get-value@^2.0.3, get-value@^2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
@@ -3770,6 +3962,11 @@ harmony-reflect@^1.4.6:
   resolved "https://registry.yarnpkg.com/harmony-reflect/-/harmony-reflect-1.6.1.tgz#c108d4f2bb451efef7a37861fdbdae72c9bdefa9"
   integrity sha512-WJTeyp0JzGtHcuMsi7rw2VwtkvLa+JyfEKJCFyfcS0+CDkjQ5lHPu7zEhFZP+PDSRrEgXa5Ah0l1MbgbE41XjA==
 
+has-bigints@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/has-bigints/-/has-bigints-1.0.1.tgz#64fe6acb020673e3b78db035a5af69aa9d07b113"
+  integrity sha512-LSBS2LjbNBTf6287JEbEzvJgftkF5qFkmCo9hDRpAzKhUOlJ+hx8dd4USs00SgsUNwc4617J9ki5YtEClM2ffA==
+
 has-flag@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
@@ -3785,6 +3982,18 @@ has-symbols@^1.0.1:
   resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.1.tgz#9f5214758a44196c406d9bd76cebf81ec2dd31e8"
   integrity sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg==
 
+has-symbols@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.2.tgz#165d3070c00309752a1236a479331e3ac56f1423"
+  integrity sha512-chXa79rL/UC2KlX17jo3vRGz0azaWEx5tGqZg5pO3NUyEJVB17dMruQlzCCOfUvElghKcm5194+BCRvi2Rv/Gw==
+
+has-tostringtag@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-tostringtag/-/has-tostringtag-1.0.0.tgz#7e133818a7d394734f941e73c3d3f9291e658b25"
+  integrity sha512-kFjcSNhnlGV1kyoGk7OXKSawH5JOb/LzUc5w9B02hOTO0dfFRjbHQKvg1d6cf3HbeUmtU9VbbV3qzZ2Teh97WQ==
+  dependencies:
+    has-symbols "^1.0.2"
+
 has-value@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/has-value/-/has-value-0.3.1.tgz#7b1f58bada62ca827ec0a2078025654845995e1f"
@@ -3816,7 +4025,7 @@ has-values@^1.0.0:
     is-number "^3.0.0"
     kind-of "^4.0.0"
 
-has@^1.0.3:
+has@^1.0.0, has@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
   integrity sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==
@@ -4045,6 +4254,11 @@ imurmurhash@^0.1.4:
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
   integrity sha1-khi5srkoojixPcT7a21XbyMUU+o=
 
+indent-string@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-4.0.0.tgz#624f8f4497d619b2d9768531d58f4122854d7251"
+  integrity sha512-EdDDZu4A2OyIK7Lr/2zG+w5jmbuk1DVBnEwREQvBzspBJkCEbRa8GxU1lghYcaGJCnRWibjDXlq779X1/y5xwg==
+
 indexes-of@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/indexes-of/-/indexes-of-1.0.1.tgz#f30f716c8e2bd346c7b67d3df3915566a7c05607"
@@ -4058,7 +4272,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@2.0.4, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.3:
+inherits@2, inherits@2.0.4, inherits@^2.0.1, inherits@^2.0.3, inherits@^2.0.4, inherits@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
@@ -4090,6 +4304,15 @@ internal-slot@^1.0.2:
     has "^1.0.3"
     side-channel "^1.0.2"
 
+internal-slot@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/internal-slot/-/internal-slot-1.0.3.tgz#7347e307deeea2faac2ac6205d4bc7d34967f59c"
+  integrity sha512-O0DB1JC/sPyZl7cIo78n5dR7eUSwwpYPiXRhTzNxZVAMUuB8vlnRFyLxdrVToks6XPLVnFfbzaVd5WLjhgg+vA==
+  dependencies:
+    get-intrinsic "^1.1.0"
+    has "^1.0.3"
+    side-channel "^1.0.4"
+
 interpret@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/interpret/-/interpret-1.4.0.tgz#665ab8bc4da27a774a40584e812e3e0fa45b1a1e"
@@ -4146,6 +4369,13 @@ is-arrayish@^0.2.1:
   resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
   integrity sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=
 
+is-bigint@^1.0.1:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/is-bigint/-/is-bigint-1.0.4.tgz#08147a1875bc2b32005d41ccd8291dffc6691df3"
+  integrity sha512-zB9CruMamjym81i2JZ3UMn54PKGsQzsJeo6xvN3HJJ4CAsQNB6iRutp2To77OfCNuoxspsIhzaPoO1zyCEhFOg==
+  dependencies:
+    has-bigints "^1.0.1"
+
 is-binary-path@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-1.0.1.tgz#75f16642b480f187a711c814161fd3a4a7655898"
@@ -4160,6 +4390,14 @@ is-boolean-object@^1.0.1:
   dependencies:
     call-bind "^1.0.0"
 
+is-boolean-object@^1.1.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/is-boolean-object/-/is-boolean-object-1.1.2.tgz#5c6dc200246dd9321ae4b885a114bb1f75f63719"
+  integrity sha512-gDYaKHJmnj4aWxyj6YHyXVpdQawtVLHU5cb+eztPGczf6cjuTdwve5ZIEfgXqH4e57An1D1AKf8CZ3kYrQRqYA==
+  dependencies:
+    call-bind "^1.0.2"
+    has-tostringtag "^1.0.0"
+
 is-buffer@^1.1.5:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
@@ -4170,6 +4408,11 @@ is-callable@^1.1.4, is-callable@^1.1.5, is-callable@^1.2.2:
   resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.2.2.tgz#c7c6715cd22d4ddb48d3e19970223aceabb080d9"
   integrity sha512-dnMqspv5nU3LoewK2N/y7KLtxtakvTuaCsU9FU50/QDmdbHNy/4/JuRtMHqRU22o3q+W89YQndQEeCVwK+3qrA==
 
+is-callable@^1.2.4:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.2.4.tgz#47301d58dd0259407865547853df6d61fe471945"
+  integrity sha512-nsuwtxZfMX67Oryl9LCQ+upnC0Z0BgpwntpS89m1H/TLF0zNfzfLMV/9Wa/6MZsj0acpEjAO0KF1xT6ZdLl95w==
+
 is-ci@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-2.0.0.tgz#6bc6334181810e04b5c22b3d589fdca55026404c"
@@ -4277,6 +4520,11 @@ is-negative-zero@^2.0.0:
   resolved "https://registry.yarnpkg.com/is-negative-zero/-/is-negative-zero-2.0.0.tgz#9553b121b0fac28869da9ed459e20c7543788461"
   integrity sha1-lVOxIbD6wohp2p7UWeIMdUN4hGE=
 
+is-negative-zero@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/is-negative-zero/-/is-negative-zero-2.0.1.tgz#3de746c18dda2319241a53675908d8f766f11c24"
+  integrity sha512-2z6JzQvZRa9A2Y7xC6dQQm4FSTSTNWjKIYYTt4246eMTJmIo0Q+ZyOsU66X8lxK1AbB92dFeglPLrhwpeRKO6w==
+
 is-number-object@^1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/is-number-object/-/is-number-object-1.0.4.tgz#36ac95e741cf18b283fc1ddf5e83da798e3ec197"
@@ -4325,13 +4573,26 @@ is-potential-custom-element-name@^1.0.0:
   resolved "https://registry.yarnpkg.com/is-potential-custom-element-name/-/is-potential-custom-element-name-1.0.0.tgz#0c52e54bcca391bb2c494b21e8626d7336c6e397"
   integrity sha1-DFLlS8yjkbssSUsh6GJtczbG45c=
 
-is-regex@^1.0.4, is-regex@^1.0.5, is-regex@^1.1.0, is-regex@^1.1.1:
+is-regex@^1.0.4, is-regex@^1.0.5, is-regex@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.1.1.tgz#c6f98aacc546f6cec5468a07b7b153ab564a57b9"
   integrity sha512-1+QkEcxiLlB7VEyFtyBg94e08OAsvq7FUBgApTq/w2ymCLyKJgDPsybBENVtA7XCQEgEXxKPonG+mvYRxh/LIg==
   dependencies:
     has-symbols "^1.0.1"
 
+is-regex@^1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.1.4.tgz#eef5663cd59fa4c0ae339505323df6854bb15958"
+  integrity sha512-kvRdxDsxZjhzUX07ZnLydzS1TU/TJlTUHHY4YLL87e37oUA49DfkLqgy+VjFocowy29cKvcSiu+kIv728jTTVg==
+  dependencies:
+    call-bind "^1.0.2"
+    has-tostringtag "^1.0.0"
+
+is-shared-array-buffer@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-shared-array-buffer/-/is-shared-array-buffer-1.0.1.tgz#97b0c85fbdacb59c9c446fe653b82cf2b5b7cfe6"
+  integrity sha512-IU0NmyknYZN0rChcKhRO1X8LYz5Isj/Fsqh8NJOSf+N/hCOTwy29F32Ik7a+QszE63IdvmwdTPDd6cZ5pg4cwA==
+
 is-stream@^1.0.1, is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
@@ -4347,6 +4608,13 @@ is-string@^1.0.5:
   resolved "https://registry.yarnpkg.com/is-string/-/is-string-1.0.5.tgz#40493ed198ef3ff477b8c7f92f644ec82a5cd3a6"
   integrity sha512-buY6VNRjhQMiF1qWDouloZlQbRhDPCebwxSjxMjxgemYT46YMd2NR0/H+fBhEfWX4A/w9TBJ+ol+okqJKFE6vQ==
 
+is-string@^1.0.7:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/is-string/-/is-string-1.0.7.tgz#0dd12bf2006f255bb58f695110eff7491eebc0fd"
+  integrity sha512-tE2UXzivje6ofPW7l23cjDOMa09gb7xlAqG6jG5ej6uPV32TlWP3NKPigtaGeHNu9fohccRYvIiZMfOOnOYUtg==
+  dependencies:
+    has-tostringtag "^1.0.0"
+
 is-subset@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/is-subset/-/is-subset-0.1.1.tgz#8a59117d932de1de00f245fcdd39ce43f1e939a6"
@@ -4359,11 +4627,25 @@ is-symbol@^1.0.2:
   dependencies:
     has-symbols "^1.0.1"
 
+is-symbol@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.4.tgz#a6dac93b635b063ca6872236de88910a57af139c"
+  integrity sha512-C/CPBqKWnvdcxqIARxyOh4v1UUEOCHpgDa0WYgpKDFMszcrPcffg5uhwSgPCLD2WWxmq6isisz87tzT01tuGhg==
+  dependencies:
+    has-symbols "^1.0.2"
+
 is-typedarray@^1.0.0, is-typedarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
   integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
 
+is-weakref@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-weakref/-/is-weakref-1.0.1.tgz#842dba4ec17fa9ac9850df2d6efbc1737274f2a2"
+  integrity sha512-b2jKc2pQZjaeFYWEf7ScFj+Be1I+PXmlu572Q8coTXZ+LD/QQZ7ShPMst8h16riVgyXTQwUsFEl74mDvc/3MHQ==
+  dependencies:
+    call-bind "^1.0.0"
+
 is-windows@^1.0.1, is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
@@ -4524,6 +4806,16 @@ jest-diff@^26.6.2:
     jest-get-type "^26.3.0"
     pretty-format "^26.6.2"
 
+jest-diff@^27.0.0:
+  version "27.4.2"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-27.4.2.tgz#786b2a5211d854f848e2dcc1e324448e9481f36f"
+  integrity sha512-ujc9ToyUZDh9KcqvQDkk/gkbf6zSaeEg9AiBxtttXW59H/AcqEYp1ciXAtJp+jXWva5nAf/ePtSsgWwE5mqp4Q==
+  dependencies:
+    chalk "^4.0.0"
+    diff-sequences "^27.4.0"
+    jest-get-type "^27.4.0"
+    pretty-format "^27.4.2"
+
 jest-docblock@^26.0.0:
   version "26.0.0"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-26.0.0.tgz#3e2fa20899fc928cb13bd0ff68bd3711a36889b5"
@@ -4572,6 +4864,11 @@ jest-get-type@^26.3.0:
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-26.3.0.tgz#e97dc3c3f53c2b406ca7afaed4493b1d099199e0"
   integrity sha512-TpfaviN1R2pQWkIihlfEanwOXK0zcxrKEE4MlU6Tn7keoXdN6/3gK/xl0yEh8DOunn5pOVGKf8hB4R9gVh04ig==
 
+jest-get-type@^27.4.0:
+  version "27.4.0"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-27.4.0.tgz#7503d2663fffa431638337b3998d39c5e928e9b5"
+  integrity sha512-tk9o+ld5TWq41DkK14L4wox4s2D9MtTpKaAVzXfr5CUKm5ZK2ExcaFE0qls2W71zE/6R2TxxrK9w2r6svAFDBQ==
+
 jest-haste-map@^26.6.2:
   version "26.6.2"
   resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-26.6.2.tgz#dd7e60fe7dc0e9f911a23d79c5ff7fb5c2cafeaa"
@@ -5114,6 +5411,11 @@ lru-cache@^6.0.0:
   dependencies:
     yallist "^4.0.0"
 
+lz-string@^1.4.4:
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/lz-string/-/lz-string-1.4.4.tgz#c0d8eaf36059f705796e1e344811cf4c498d3a26"
+  integrity sha1-wNjq82BZ9wV5bh40SBHPTEmNOiY=
+
 make-dir@^2.0.0, make-dir@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-2.1.0.tgz#5f0310e18b8be898cc07009295a30ae41e91e6f5"
@@ -5250,6 +5552,11 @@ mimic-fn@^2.1.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
   integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
 
+min-indent@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/min-indent/-/min-indent-1.0.1.tgz#a63f681673b30571fbe8bc25686ae746eefa9869"
+  integrity sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==
+
 mini-create-react-context@^0.4.0:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/mini-create-react-context/-/mini-create-react-context-0.4.1.tgz#072171561bfdc922da08a60c2197a497cc2d1d5e"
@@ -5457,9 +5764,9 @@ npm-run-path@^4.0.0:
     path-key "^3.0.0"
 
 nth-check@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/nth-check/-/nth-check-2.0.0.tgz#1bb4f6dac70072fc313e8c9cd1417b5074c0a125"
-  integrity sha512-i4sc/Kj8htBrAiH1viZ0TgU8Y5XqCaV/FziYK6TBczxmeKm3AEFWqqF3195yKudrarqy7Zu80Ra5dobFjn9X/Q==
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/nth-check/-/nth-check-2.0.1.tgz#2efe162f5c3da06a28959fbd3db75dbeea9f0fc2"
+  integrity sha512-it1vE95zF6dTT9lBsYbxvqh0Soy4SPowchj0UBGj/V6cTPnXXtQOPUbhZ6CmGzAD/rW22LQK6E96pcdJXk4A4w==
   dependencies:
     boolbase "^1.0.0"
 
@@ -5487,6 +5794,11 @@ object-copy@^0.1.0:
     define-property "^0.2.5"
     kind-of "^3.0.3"
 
+object-inspect@^1.11.0:
+  version "1.11.0"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.11.0.tgz#9dceb146cedd4148a0d9e51ab88d34cf509922b1"
+  integrity sha512-jp7ikS6Sd3GxQfZJPyH3cjcbJF6GZPClgdV+EFygjFLQ5FmW/dRUnTd9PQ9k0JhoNDabWFbpF1yCdSWCC6gexg==
+
 object-inspect@^1.7.0, object-inspect@^1.9.0:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.9.0.tgz#c90521d74e1127b67266ded3394ad6116986533a"
@@ -5545,7 +5857,16 @@ object.entries@^1.1.1, object.entries@^1.1.2:
     es-abstract "^1.18.0-next.1"
     has "^1.0.3"
 
-object.fromentries@^2.0.2, object.fromentries@^2.0.3:
+object.fromentries@^2.0.0:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/object.fromentries/-/object.fromentries-2.0.5.tgz#7b37b205109c21e741e605727fe8b0ad5fa08251"
+  integrity sha512-CAyG5mWQRRiBU57Re4FKoTBjXfDoNwdFVH2Y1tS9PqCsfUTymAohOkEMSG3aRNKmv4lV3O7p1et7c187q6bynw==
+  dependencies:
+    call-bind "^1.0.2"
+    define-properties "^1.1.3"
+    es-abstract "^1.19.1"
+
+object.fromentries@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/object.fromentries/-/object.fromentries-2.0.3.tgz#13cefcffa702dc67750314a3305e8cb3fad1d072"
   integrity sha512-IDUSMXs6LOSJBWE++L0lzIbSqHl9KDCfff2x/JSEIDtEUavUnyMYC2ZGay/04Zq4UT8lvd4xNhU4/YHKibAOlw==
@@ -5562,6 +5883,15 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
+object.values@^1.1.0:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/object.values/-/object.values-1.1.5.tgz#959f63e3ce9ef108720333082131e4a459b716ac"
+  integrity sha512-QUZRW0ilQ3PnPpbNtgdNV1PDbEqLIiSFB3l+EnGtBQ/8SUTLj1PZwtQHABZtLgwpJZTSZhuGLOGk57Drx2IvYg==
+  dependencies:
+    call-bind "^1.0.2"
+    define-properties "^1.1.3"
+    es-abstract "^1.19.1"
+
 object.values@^1.1.1:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/object.values/-/object.values-1.1.2.tgz#7a2015e06fcb0f546bd652486ce8583a4731c731"
@@ -5948,6 +6278,16 @@ pretty-format@^26.6.2:
     ansi-styles "^4.0.0"
     react-is "^17.0.1"
 
+pretty-format@^27.0.0, pretty-format@^27.0.2, pretty-format@^27.4.2:
+  version "27.4.2"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-27.4.2.tgz#e4ce92ad66c3888423d332b40477c87d1dac1fb8"
+  integrity sha512-p0wNtJ9oLuvgOQDEIZ9zQjZffK7KtyR6Si0jnXULIDwrlNF8Cuir3AZP0hHv0jmKuNN/edOnbMjnzd4uTcmWiw==
+  dependencies:
+    "@jest/types" "^27.4.2"
+    ansi-regex "^5.0.1"
+    ansi-styles "^5.0.0"
+    react-is "^17.0.1"
+
 process-nextick-args@~2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
@@ -5973,15 +6313,6 @@ prompts@^2.0.1:
     kleur "^3.0.3"
     sisteransi "^1.0.5"
 
-prop-types-exact@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/prop-types-exact/-/prop-types-exact-1.2.0.tgz#825d6be46094663848237e3925a98c6e944e9869"
-  integrity sha512-K+Tk3Kd9V0odiXFP9fwDHUYRyvK3Nun3GVyPapSIs5OBkITAm15W0CPFD/YKTkMUAbc0b9CUwRQp2ybiBIq+eA==
-  dependencies:
-    has "^1.0.3"
-    object.assign "^4.1.0"
-    reflect.ownkeys "^0.2.0"
-
 prop-types-extra@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/prop-types-extra/-/prop-types-extra-1.1.1.tgz#58c3b74cbfbb95d304625975aa2f0848329a010b"
@@ -5990,7 +6321,7 @@ prop-types-extra@^1.1.0:
     react-is "^16.3.2"
     warning "^4.0.0"
 
-prop-types@^15.6.2, prop-types@^15.7.2:
+prop-types@^15.6.2, prop-types@^15.7.0, prop-types@^15.7.2:
   version "15.7.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
   integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
@@ -6135,7 +6466,7 @@ react-icons@^4.1.0:
   resolved "https://registry.yarnpkg.com/react-icons/-/react-icons-4.1.0.tgz#9ca9bcbf2e3aee8e86e378bb9d465842947bbfc3"
   integrity sha512-FCXBg1JbbR0vWALXIxmFAfozHdVIJmmwCD81Jk0EKOt7Ax4AdBNcaRkWhR0NaKy9ugJgoY3fFvo0PHpte55pXg==
 
-"react-is@^16.12.0 || ^17.0.0", react-is@^17.0.0, react-is@^17.0.1:
+"react-is@^16.12.0 || ^17.0.0", react-is@^17.0.1:
   version "17.0.1"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.1.tgz#5b3531bd76a645a4c9fb6e693ed36419e3301339"
   integrity sha512-NAnt2iGDXohE5LI7uBnLnqvLQMtzhkiAOLXTmv+qnF9Ky7xAPcX8Up/xWIhxvLVGJvuLiNc4xQLtuqDRzb4fSA==
@@ -6145,6 +6476,11 @@ react-is@^16.13.1, react-is@^16.3.2, react-is@^16.6.0, react-is@^16.7.0, react-i
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
   integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
 
+react-is@^17.0.2:
+  version "17.0.2"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.2.tgz#e691d4a8e9c789365655539ab372762b0efb54f0"
+  integrity sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==
+
 react-lifecycles-compat@^3.0.2, react-lifecycles-compat@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"
@@ -6309,6 +6645,14 @@ recompose@^0.30.0:
     react-lifecycles-compat "^3.0.2"
     symbol-observable "^1.0.4"
 
+redent@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/redent/-/redent-3.0.0.tgz#e557b7998316bb53c9f1f56fa626352c6963059f"
+  integrity sha512-6tDA8g98We0zd0GvVeMT9arEOnTw9qM03L9cJXaCjrip1OO764RDBLBfrB4cwzNGDj5OA5ioymC9GkizgWJDUg==
+  dependencies:
+    indent-string "^4.0.0"
+    strip-indent "^3.0.0"
+
 redux@^4.0.5:
   version "4.0.5"
   resolved "https://registry.yarnpkg.com/redux/-/redux-4.0.5.tgz#4db5de5816e17891de8a80c424232d06f051d93f"
@@ -6317,11 +6661,6 @@ redux@^4.0.5:
     loose-envify "^1.4.0"
     symbol-observable "^1.2.0"
 
-reflect.ownkeys@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/reflect.ownkeys/-/reflect.ownkeys-0.2.0.tgz#749aceec7f3fdf8b63f927a04809e90c5c0b3460"
-  integrity sha1-dJrO7H8/34tj+SegSAnpDFwLNGA=
-
 regenerate-unicode-properties@^8.2.0:
   version "8.2.0"
   resolved "https://registry.yarnpkg.com/regenerate-unicode-properties/-/regenerate-unicode-properties-8.2.0.tgz#e5de7111d655e7ba60c057dbe9ff37c87e65cdec"
@@ -6659,7 +6998,7 @@ selfsigned@^1.10.7:
   dependencies:
     node-forge "^0.10.0"
 
-"semver@2 || 3 || 4 || 5", semver@^5.4.1, semver@^5.5.0, semver@^5.6.0, semver@^5.7.0, semver@^5.7.1:
+"semver@2 || 3 || 4 || 5", semver@^5.4.1, semver@^5.5.0, semver@^5.6.0:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
   integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
@@ -6794,7 +7133,7 @@ shellwords@^0.1.1:
   resolved "https://registry.yarnpkg.com/shellwords/-/shellwords-0.1.1.tgz#d6b9181c1a48d397324c84871efbcfc73fc0654b"
   integrity sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==
 
-side-channel@^1.0.2, side-channel@^1.0.3:
+side-channel@^1.0.2, side-channel@^1.0.3, side-channel@^1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/side-channel/-/side-channel-1.0.4.tgz#efce5c8fdc104ee751b25c58d4290011fa5ea2cf"
   integrity sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==
@@ -6899,6 +7238,14 @@ source-map-resolve@^0.5.0:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
+source-map-resolve@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.6.0.tgz#3d9df87e236b53f16d01e58150fc7711138e5ed2"
+  integrity sha512-KXBr9d/fO/bWo97NXsPIAW1bFSBOuCnjbNTBMO7N59hsv5i9yzRDfcYwwt0l04+VqnKC+EwzvJZIP/qkuMgR/w==
+  dependencies:
+    atob "^2.1.2"
+    decode-uri-component "^0.2.0"
+
 source-map-support@^0.5.6, source-map-support@~0.5.19:
   version "0.5.19"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
@@ -7084,6 +7431,14 @@ string.prototype.trimend@^1.0.1:
     define-properties "^1.1.3"
     es-abstract "^1.18.0-next.1"
 
+string.prototype.trimend@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimend/-/string.prototype.trimend-1.0.4.tgz#e75ae90c2942c63504686c18b287b4a0b1a45f80"
+  integrity sha512-y9xCjw1P23Awk8EvTpcyL2NIr1j7wJ39f+k6lvRnSMz+mz9CGz9NYPelDk42kOz6+ql8xjfK8oYzy3jAP5QU5A==
+  dependencies:
+    call-bind "^1.0.2"
+    define-properties "^1.1.3"
+
 string.prototype.trimstart@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/string.prototype.trimstart/-/string.prototype.trimstart-1.0.2.tgz#22d45da81015309cd0cdd79787e8919fc5c613e7"
@@ -7092,6 +7447,14 @@ string.prototype.trimstart@^1.0.1:
     define-properties "^1.1.3"
     es-abstract "^1.18.0-next.1"
 
+string.prototype.trimstart@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimstart/-/string.prototype.trimstart-1.0.4.tgz#b36399af4ab2999b4c9c648bd7a3fb2bb26feeed"
+  integrity sha512-jh6e984OBfvxS50tdY2nRZnoC5/mLFKOREQfw8t5yytkoUsJRNxvI/E39qu1sD0OtWI3OC0XgKSmcWwziwYuZw==
+  dependencies:
+    call-bind "^1.0.2"
+    define-properties "^1.1.3"
+
 string_decoder@^1.1.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.3.0.tgz#42f114594a46cf1a8e30b0a84f56c78c3edac21e"
@@ -7142,6 +7505,13 @@ strip-final-newline@^2.0.0:
   resolved "https://registry.yarnpkg.com/strip-final-newline/-/strip-final-newline-2.0.0.tgz#89b852fb2fcbe936f6f4b3187afb0a12c1ab58ad"
   integrity sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA==
 
+strip-indent@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/strip-indent/-/strip-indent-3.0.0.tgz#c32e1cee940b6b3432c771bc2c54bcce73cd3001"
+  integrity sha512-laJTa3Jb+VQpaC6DseHhF7dXVqHTfJPCRDaEbid/drOhgitgYku/letMUqOXFoWV0zIIUbjpdH2t+tYj4bQMRQ==
+  dependencies:
+    min-indent "^1.0.0"
+
 strip-json-comments@^3.1.0, strip-json-comments@^3.1.1:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-3.1.1.tgz#31f1281b3832630434831c310c01cccda8cbe006"
@@ -7278,9 +7648,9 @@ tiny-warning@^1.0.0, tiny-warning@^1.0.3:
   integrity sha512-lBN9zLN/oAf68o3zNXYrdCt1kP8WsiGW8Oo2ka41b2IM5JL/S1CTyX1rW0mb/zSuJun0ZUrDxx4sqvYS2FWzPA==
 
 tmpl@1.0.x:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"
-  integrity sha1-I2QN17QtAEM5ERQIIOXPRA5SHdE=
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.5.tgz#8683e0b902bb9c20c4f726e3c0b69f36518c07cc"
+  integrity sha512-3f0uOEAQwIqGuWW2MVzYg8fV/QNnc/IpuJNG837rLuczAaLVHslWHZQj4IGiEl5Hs3kkbhwL9Ab7Hrsmuj+Smw==
 
 to-fast-properties@^2.0.0:
   version "2.0.0"
@@ -7419,6 +7789,16 @@ ua-parser-js@^0.7.18:
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.28.tgz#8ba04e653f35ce210239c64661685bf9121dec31"
   integrity sha512-6Gurc1n//gjp9eQNXjD9O3M/sMwVtN5S8Lv9bvOYBfKfDNiIIhqiyi01vMBO45u4zkDE420w/e0se7Vs+sIg+g==
 
+unbox-primitive@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/unbox-primitive/-/unbox-primitive-1.0.1.tgz#085e215625ec3162574dc8859abee78a59b14471"
+  integrity sha512-tZU/3NqK3dA5gpE1KtyiJUrEB0lxnGkMFHptJ7q6ewdZ8s12QrODwNbhIJStmJkd1QDXa1NRA8aF2A1zk/Ypyw==
+  dependencies:
+    function-bind "^1.1.1"
+    has-bigints "^1.0.1"
+    has-symbols "^1.0.2"
+    which-boxed-primitive "^1.0.2"
+
 uncontrollable@^7.0.0:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/uncontrollable/-/uncontrollable-7.1.1.tgz#f67fed3ef93637126571809746323a9db815d556"
@@ -7792,6 +8172,17 @@ whatwg-url@^8.0.0:
     tr46 "^2.0.2"
     webidl-conversions "^6.1.0"
 
+which-boxed-primitive@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/which-boxed-primitive/-/which-boxed-primitive-1.0.2.tgz#13757bc89b209b049fe5d86430e21cf40a89a8e6"
+  integrity sha512-bwZdv0AKLpplFY2KZRX6TvyuN7ojjr7lwkg6ml0roIy9YeuSr7JS372qlNW18UQYzgYK9ziGcerWqZOmEn9VNg==
+  dependencies:
+    is-bigint "^1.0.1"
+    is-boolean-object "^1.1.0"
+    is-number-object "^1.0.4"
+    is-string "^1.0.5"
+    is-symbol "^1.0.3"
+
 which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"

jupyterhub/_version.py

@@ -1,14 +1,8 @@
 """JupyterHub version info"""
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
-
-version_info = (
-    2,
-    0,
-    0,
-    "b1",  # release (b1, rc1, or "" for final or dev)
-    # "dev",  # dev or nothing for beta/rc/stable releases
-)
+# version_info updated by running `tbump`
+version_info = (2, 1, 0, "", "")
 
 # pep 440 version: no dot before beta/rc, but before .dev
 # 0.1.0rc1
@@ -16,7 +10,9 @@ version_info = (
 # 0.1.0b1.dev
 # 0.1.0.dev
 
-__version__ = ".".join(map(str, version_info[:3])) + ".".join(version_info[3:])
+__version__ = ".".join(map(str, version_info[:3])) + ".".join(version_info[3:]).rstrip(
+    "."
+)
 
 # Singleton flag to only log the major/minor mismatch warning once per mismatch combo.
 _version_mismatch_warning_logged = {}

jupyterhub/alembic/env.py

@@ -55,8 +55,15 @@ def run_migrations_offline():
     script output.
 
     """
-    url = config.get_main_option("sqlalchemy.url")
-    context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
+    connectable = config.attributes.get('connection', None)
+
+    if connectable is None:
+        url = config.get_main_option("sqlalchemy.url")
+        context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
+    else:
+        context.configure(
+            connection=connectable, target_metadata=target_metadata, literal_binds=True
+        )
 
     with context.begin_transaction():
         context.run_migrations()
@@ -69,11 +76,14 @@ def run_migrations_online():
     and associate a connection with the context.
 
     """
-    connectable = engine_from_config(
-        config.get_section(config.config_ini_section),
-        prefix='sqlalchemy.',
-        poolclass=pool.NullPool,
-    )
+    connectable = config.attributes.get('connection', None)
+
+    if connectable is None:
+        connectable = engine_from_config(
+            config.get_section(config.config_ini_section),
+            prefix='sqlalchemy.',
+            poolclass=pool.NullPool,
+        )
 
     with connectable.connect() as connection:
         context.configure(connection=connection, target_metadata=target_metadata)

jupyterhub/apihandlers/auth.py

@@ -16,6 +16,7 @@ from tornado import web
 from .. import orm
 from .. import roles
 from .. import scopes
+from ..utils import get_browser_protocol
 from ..utils import token_authenticated
 from .base import APIHandler
 from .base import BaseHandler
@@ -115,7 +116,10 @@ class OAuthHandler:
         # make absolute local redirects full URLs
         # to satisfy oauthlib's absolute URI requirement
         redirect_uri = (
-            self.request.protocol + "://" + self.request.headers['Host'] + redirect_uri
+            get_browser_protocol(self.request)
+            + "://"
+            + self.request.host
+            + redirect_uri
         )
         parsed_url = urlparse(uri)
         query_list = parse_qsl(parsed_url.query, keep_blank_values=True)
@@ -308,12 +312,14 @@ class OAuthAuthorizeHandler(OAuthHandler, BaseHandler):
                         "filter": "",
                     }
                 ]
-            elif 'all' in raw_scopes:
-                raw_scopes = ['all']
+            elif 'inherit' in raw_scopes:
+                raw_scopes = ['inherit']
                 scope_descriptions = [
                     {
-                        "scope": "all",
-                        "description": scopes.scope_definitions['all']['description'],
+                        "scope": "inherit",
+                        "description": scopes.scope_definitions['inherit'][
+                            'description'
+                        ],
                         "filter": "",
                     }
                 ]

jupyterhub/apihandlers/base.py

@@ -14,6 +14,7 @@ from tornado import web
 
 from .. import orm
 from ..handlers import BaseHandler
+from ..utils import get_browser_protocol
 from ..utils import isoformat
 from ..utils import url_path_join
 
@@ -31,6 +32,9 @@ class APIHandler(BaseHandler):
     - methods for REST API models
     """
 
+    # accept token-based authentication for API requests
+    _accept_token_auth = True
+
     @property
     def content_security_policy(self):
         return '; '.join([super().content_security_policy, "default-src 'none'"])
@@ -55,7 +59,10 @@ class APIHandler(BaseHandler):
 
         - allow unspecified host/referer (e.g. scripts)
         """
-        host = self.request.headers.get("Host")
+        host_header = self.app.forwarded_host_header or "Host"
+        host = self.request.headers.get(host_header)
+        if host and "," in host:
+            host = host.split(",", 1)[0].strip()
         referer = self.request.headers.get("Referer")
 
         # If no header is provided, assume it comes from a script/curl.
@@ -67,13 +74,25 @@ class APIHandler(BaseHandler):
             self.log.warning("Blocking API request with no referer")
             return False
 
-        host_path = url_path_join(host, self.hub.base_url)
-        referer_path = referer.split('://', 1)[-1]
-        if not (referer_path + '/').startswith(host_path):
+        proto = get_browser_protocol(self.request)
+
+        full_host = f"{proto}://{host}{self.hub.base_url}"
+        host_url = urlparse(full_host)
+        referer_url = urlparse(referer)
+        # resolve default ports for http[s]
+        referer_port = referer_url.port or (
+            443 if referer_url.scheme == 'https' else 80
+        )
+        host_port = host_url.port or (443 if host_url.scheme == 'https' else 80)
+        if (
+            referer_url.scheme != host_url.scheme
+            or referer_url.hostname != host_url.hostname
+            or referer_port != host_port
+            or not (referer_url.path + "/").startswith(host_url.path)
+        ):
             self.log.warning(
-                "Blocking Cross Origin API request.  Referer: %s, Host: %s",
-                referer,
-                host_path,
+                f"Blocking Cross Origin API request.  Referer: {referer},"
+                f" {host_header}: {host}, Host URL: {full_host}",
             )
             return False
         return True
@@ -210,6 +229,7 @@ class APIHandler(BaseHandler):
             'last_activity': isoformat(token.last_activity),
             'expires_at': isoformat(token.expires_at),
             'note': token.note,
+            'session_id': token.session_id,
             'oauth_client': token.oauth_client.description
             or token.oauth_client.identifier,
         }

jupyterhub/apihandlers/groups.py

@@ -129,7 +129,7 @@ class GroupAPIHandler(_GroupAPIHandler):
         self.write(json.dumps(self.group_model(group)))
         self.set_status(201)
 
-    @needs_scope('admin:groups')
+    @needs_scope('delete:groups')
     def delete(self, group_name):
         """Delete a group by name"""
         group = self.find_group(group_name)

jupyterhub/apihandlers/users.py

@@ -58,6 +58,14 @@ class SelfAPIHandler(APIHandler):
 
         model = get_model(user)
 
+        # add session_id associated with token
+        # added in 2.0
+        token = self.get_token()
+        if token:
+            model["session_id"] = token.session_id
+        else:
+            model["session_id"] = None
+
         # add scopes to identify model,
         # but not the scopes we added to ensure we could read our own model
         model["scopes"] = sorted(self.expanded_scopes.difference(_added_scopes))
@@ -266,7 +274,7 @@ class UserAPIHandler(APIHandler):
         self.write(json.dumps(self.user_model(user)))
         self.set_status(201)
 
-    @needs_scope('admin:users')
+    @needs_scope('delete:users')
     async def delete(self, user_name):
         user = self.find_user(user_name)
         if user is None:
@@ -397,9 +405,11 @@ class UserTokenListAPIHandler(APIHandler):
         token_roles = body.get('roles')
         try:
             api_token = user.new_api_token(
-                note=note, expires_in=body.get('expires_in', None), roles=token_roles
+                note=note,
+                expires_in=body.get('expires_in', None),
+                roles=token_roles,
             )
-        except NameError:
+        except KeyError:
             raise web.HTTPError(404, "Requested roles %r not found" % token_roles)
         except ValueError:
             raise web.HTTPError(
@@ -421,6 +431,7 @@ class UserTokenListAPIHandler(APIHandler):
         token_model = self.token_model(orm.APIToken.find(self.db, api_token))
         token_model['token'] = api_token
         self.write(json.dumps(token_model))
+        self.set_status(201)
 
 
 class UserTokenAPIHandler(APIHandler):
@@ -483,6 +494,11 @@ class UserServerAPIHandler(APIHandler):
     @needs_scope('servers')
     async def post(self, user_name, server_name=''):
         user = self.find_user(user_name)
+        if user is None:
+            # this can be reached if a token has `servers`
+            # permission on *all* users
+            raise web.HTTPError(404)
+
         if server_name:
             if not self.allow_named_servers:
                 raise web.HTTPError(400, "Named servers are not enabled.")
@@ -525,7 +541,7 @@ class UserServerAPIHandler(APIHandler):
         self.set_header('Content-Type', 'text/plain')
         self.set_status(status)
 
-    @needs_scope('servers')
+    @needs_scope('delete:servers')
     async def delete(self, user_name, server_name=''):
         user = self.find_user(user_name)
         options = self.get_json_body()
@@ -698,7 +714,12 @@ class SpawnProgressAPIHandler(APIHandler):
             # check if spawner has just failed
             f = spawn_future
             if f and f.done() and f.exception():
-                failed_event['message'] = "Spawn failed: %s" % f.exception()
+                exc = f.exception()
+                message = getattr(exc, "jupyterhub_message", str(exc))
+                failed_event['message'] = f"Spawn failed: {message}"
+                html_message = getattr(exc, "jupyterhub_html_message", "")
+                if html_message:
+                    failed_event['html_message'] = html_message
                 await self.send_event(failed_event)
                 return
             else:
@@ -731,7 +752,12 @@ class SpawnProgressAPIHandler(APIHandler):
             # what happened? Maybe spawn failed?
             f = spawn_future
             if f and f.done() and f.exception():
-                failed_event['message'] = "Spawn failed: %s" % f.exception()
+                exc = f.exception()
+                message = getattr(exc, "jupyterhub_message", str(exc))
+                failed_event['message'] = f"Spawn failed: {message}"
+                html_message = getattr(exc, "jupyterhub_html_message", "")
+                if html_message:
+                    failed_event['html_message'] = html_message
             else:
                 self.log.warning(
                     "Server %s didn't start for unknown reason", spawner._log_name

jupyterhub/app.py

@@ -90,6 +90,7 @@ from .log import CoroutineLogFormatter, log_request
 from .proxy import Proxy, ConfigurableHTTPProxy
 from .traitlets import URLPrefix, Command, EntryPointType, Callable
 from .utils import (
+    AnyTimeoutError,
     catch_db_error,
     maybe_future,
     url_path_join,
@@ -790,6 +791,16 @@ class JupyterHub(Application):
             self.proxy_api_ip or '127.0.0.1', self.proxy_api_port or self.port + 1
         )
 
+    forwarded_host_header = Unicode(
+        '',
+        help="""Alternate header to use as the Host (e.g., X-Forwarded-Host)
+        when determining whether a request is cross-origin
+
+        This may be useful when JupyterHub is running behind a proxy that rewrites
+        the Host header.
+        """,
+    ).tag(config=True)
+
     hub_port = Integer(
         8081,
         help="""The internal port for the Hub process.
@@ -1518,6 +1529,25 @@ class JupyterHub(Application):
         """,
     ).tag(config=True)
 
+    use_legacy_stopped_server_status_code = Bool(
+        False,
+        help="""
+        Return 503 rather than 424 when request comes in for a non-running server.
+
+        Prior to JupyterHub 2.0, we returned a 503 when any request came in for
+        a user server that was currently not running. By default, JupyterHub 2.0
+        will return a 424 - this makes operational metric dashboards more useful.
+
+        JupyterLab < 3.2 expected the 503 to know if the user server is no longer
+        running, and prompted the user to start their server. Set this config to
+        true to retain the old behavior, so JupyterLab < 3.2 can continue to show
+        the appropriate UI when the user server is stopped.
+
+        This option will be removed in a future release.
+        """,
+        config=True,
+    )
+
     def init_handlers(self):
         h = []
         # load handlers from the authenticator
@@ -1873,6 +1903,7 @@ class JupyterHub(Application):
             user = orm.User.find(db, name)
             if user is None:
                 user = orm.User(name=name, admin=True)
+                roles.assign_default_roles(self.db, entity=user)
                 new_users.append(user)
                 db.add(user)
             else:
@@ -1963,6 +1994,7 @@ class JupyterHub(Application):
             self.log.info(f"Creating user {username}")
             user = orm.User(name=username)
             self.db.add(user)
+            roles.assign_default_roles(self.db, entity=user)
             self.db.commit()
         return user
 
@@ -1984,14 +2016,25 @@ class JupyterHub(Application):
 
     async def init_role_creation(self):
         """Load default and predefined roles into the database"""
-        self.log.debug('Loading default roles to database')
+        self.log.debug('Loading roles into database')
         default_roles = roles.get_default_roles()
         config_role_names = [r['name'] for r in self.load_roles]
 
-        init_roles = default_roles
+        default_roles_dict = {role["name"]: role for role in default_roles}
+        init_roles = []
         roles_with_new_permissions = []
         for role_spec in self.load_roles:
             role_name = role_spec['name']
+            if role_name in default_roles_dict:
+                self.log.debug(f"Overriding default role {role_name}")
+                # merge custom role spec with default role spec when overriding
+                # so the new role can be partially defined
+                default_role_spec = default_roles_dict.pop(role_name)
+                merged_role_spec = {}
+                merged_role_spec.update(default_role_spec)
+                merged_role_spec.update(role_spec)
+                role_spec = merged_role_spec
+
             # Check for duplicates
             if config_role_names.count(role_name) > 1:
                 raise ValueError(
@@ -2002,10 +2045,13 @@ class JupyterHub(Application):
             old_role = orm.Role.find(self.db, name=role_name)
             if old_role:
                 if not set(role_spec['scopes']).issubset(old_role.scopes):
-                    app_log.warning(
+                    self.log.warning(
                         "Role %s has obtained extra permissions" % role_name
                     )
                     roles_with_new_permissions.append(role_name)
+
+        # make sure we load any default roles not overridden
+        init_roles = list(default_roles_dict.values()) + init_roles
         if roles_with_new_permissions:
             unauthorized_oauth_tokens = (
                 self.db.query(orm.APIToken)
@@ -2017,7 +2063,7 @@ class JupyterHub(Application):
                 .filter(orm.APIToken.client_id != 'jupyterhub')
             )
             for token in unauthorized_oauth_tokens:
-                app_log.warning(
+                self.log.warning(
                     "Deleting OAuth token %s; one of its roles obtained new permissions that were not authorized by user"
                     % token
                 )
@@ -2025,14 +2071,19 @@ class JupyterHub(Application):
             self.db.commit()
 
         init_role_names = [r['name'] for r in init_roles]
-        if not orm.Role.find(self.db, name='admin'):
+        if (
+            self.db.query(orm.Role).first() is None
+            and self.db.query(orm.User).first() is not None
+        ):
+            # apply rbac-upgrade default role assignment if there are users in the db,
+            # but not any roles
             self._rbac_upgrade = True
         else:
             self._rbac_upgrade = False
         for role in self.db.query(orm.Role).filter(
             orm.Role.name.notin_(init_role_names)
         ):
-            app_log.info(f"Deleting role {role.name}")
+            self.log.warning(f"Deleting role {role.name}")
             self.db.delete(role)
         self.db.commit()
         for role in init_roles:
@@ -2048,66 +2099,89 @@ class JupyterHub(Application):
         if config_admin_users:
             for role_spec in self.load_roles:
                 if role_spec['name'] == 'admin':
-                    app_log.warning(
+                    self.log.warning(
                         "Configuration specifies both admin_users and users in the admin role specification. "
-                        "If admin role is present in config, c.authenticator.admin_users should not be used."
+                        "If admin role is present in config, c.Authenticator.admin_users should not be used."
                     )
-                    app_log.info(
+                    self.log.info(
                         "Merging admin_users set with users list in admin role"
                     )
                     role_spec['users'] = set(role_spec.get('users', []))
                     role_spec['users'] |= config_admin_users
-        self.log.debug('Loading predefined roles from config file to database')
+        self.log.debug('Loading role assignments from config')
         has_admin_role_spec = {role_bearer: False for role_bearer in admin_role_objects}
-        for predef_role in self.load_roles:
-            predef_role_obj = orm.Role.find(db, name=predef_role['name'])
-            if predef_role['name'] == 'admin':
+        for role_spec in self.load_roles:
+            role = orm.Role.find(db, name=role_spec['name'])
+            role_name = role_spec["name"]
+            if role_name == 'admin':
                 for kind in admin_role_objects:
-                    has_admin_role_spec[kind] = kind in predef_role
+                    has_admin_role_spec[kind] = kind in role_spec
                     if has_admin_role_spec[kind]:
-                        app_log.info(f"Admin role specifies static {kind} list")
+                        self.log.info(f"Admin role specifies static {kind} list")
                     else:
-                        app_log.info(
+                        self.log.info(
                             f"Admin role does not specify {kind}, preserving admin membership in database"
                         )
             # add users, services, and/or groups,
             # tokens need to be checked for permissions
             for kind in kinds:
                 orm_role_bearers = []
-                if kind in predef_role.keys():
-                    for bname in predef_role[kind]:
+                if kind in role_spec:
+                    for name in role_spec[kind]:
                         if kind == 'users':
-                            bname = self.authenticator.normalize_username(bname)
+                            name = self.authenticator.normalize_username(name)
                             if not (
                                 await maybe_future(
-                                    self.authenticator.check_allowed(bname, None)
+                                    self.authenticator.check_allowed(name, None)
                                 )
                             ):
                                 raise ValueError(
-                                    "Username %r is not in Authenticator.allowed_users"
-                                    % bname
+                                    f"Username {name} is not in Authenticator.allowed_users"
                                 )
                         Class = orm.get_class(kind)
-                        orm_obj = Class.find(db, bname)
-                        if orm_obj:
+                        orm_obj = Class.find(db, name)
+                        if orm_obj is not None:
                             orm_role_bearers.append(orm_obj)
                         else:
-                            app_log.info(
-                                f"Found unexisting {kind} {bname} in role definition {predef_role['name']}"
+                            self.log.info(
+                                f"Found unexisting {kind} {name} in role definition {role_name}"
                             )
                             if kind == 'users':
-                                orm_obj = await self._get_or_create_user(bname)
+                                orm_obj = await self._get_or_create_user(name)
                                 orm_role_bearers.append(orm_obj)
+                            elif kind == 'groups':
+                                group = orm.Group(name=name)
+                                db.add(group)
+                                db.commit()
+                                orm_role_bearers.append(group)
                             else:
                                 raise ValueError(
-                                    f"{kind} {bname} defined in config role definition {predef_role['name']} but not present in database"
+                                    f"{kind} {name} defined in config role definition {role_name} but not present in database"
                                 )
                         # Ensure all with admin role have admin flag
-                        if predef_role['name'] == 'admin':
+                        if role_name == 'admin':
                             orm_obj.admin = True
-                setattr(predef_role_obj, kind, orm_role_bearers)
+                    # explicitly defined list
+                    # ensure membership list is exact match (adds and revokes permissions)
+                    setattr(role, kind, orm_role_bearers)
+                else:
+                    # no defined members
+                    # leaving 'users' undefined in overrides of the default 'user' role
+                    # should not clear membership on startup
+                    # since allowed users could be managed by the authenticator
+                    if kind == "users" and role_name == "user":
+                        # Default user lists can be managed by the Authenticator,
+                        # if unspecified in role config
+                        pass
+                    else:
+                        # otherwise, omitting a member category is equivalent to specifying an empty list
+                        setattr(role, kind, [])
+
         db.commit()
         if self.authenticator.allowed_users:
+            self.log.debug(
+                f"Assigning {len(self.authenticator.allowed_users)} allowed_users to the user role"
+            )
             allowed_users = db.query(orm.User).filter(
                 orm.User.name.in_(self.authenticator.allowed_users)
             )
@@ -2124,8 +2198,8 @@ class JupyterHub(Application):
         db.commit()
         # make sure that on hub upgrade, all users, services and tokens have at least one role (update with default)
         if getattr(self, '_rbac_upgrade', False):
-            app_log.warning(
-                "No admin role found; assuming hub upgrade. Initializing default roles for all entities"
+            self.log.warning(
+                "No roles found; assuming hub upgrade. Initializing default roles for all entities"
             )
             for kind in kinds:
                 roles.check_for_default_roles(db, kind)
@@ -2331,7 +2405,7 @@ class JupyterHub(Application):
                 continue
             try:
                 await Server.from_orm(service.orm.server).wait_up(timeout=1, http=True)
-            except TimeoutError:
+            except AnyTimeoutError:
                 self.log.warning(
                     "Cannot connect to %s service %s at %s",
                     service.kind,
@@ -2409,7 +2483,7 @@ class JupyterHub(Application):
                 )
                 try:
                     await user._wait_up(spawner)
-                except TimeoutError:
+                except AnyTimeoutError:
                     self.log.error(
                         "%s does not appear to be running at %s, shutting it down.",
                         spawner._log_name,
@@ -2773,7 +2847,7 @@ class JupyterHub(Application):
             await gen.with_timeout(
                 timedelta(seconds=max(init_spawners_timeout, 1)), init_spawners_future
             )
-        except gen.TimeoutError:
+        except AnyTimeoutError:
             self.log.warning(
                 "init_spawners did not complete within %i seconds. "
                 "Allowing to complete in the background.",
@@ -3036,7 +3110,7 @@ class JupyterHub(Application):
                         await Server.from_orm(service.orm.server).wait_up(
                             http=True, timeout=1, ssl_context=ssl_context
                         )
-                    except TimeoutError:
+                    except AnyTimeoutError:
                         if service.managed:
                             status = await service.spawner.poll()
                             if status is not None:

jupyterhub/auth.py

@@ -1173,3 +1173,22 @@ class DummyAuthenticator(Authenticator):
                 return data['username']
             return None
         return data['username']
+
+
+class NullAuthenticator(Authenticator):
+    """Null Authenticator for JupyterHub
+
+    For cases where authentication should be disabled,
+    e.g. only allowing access via API tokens.
+
+    .. versionadded:: 2.0
+    """
+
+    # auto_login skips 'Login with...' page on Hub 0.8
+    auto_login = True
+
+    # for Hub 0.7, show 'login with...'
+    login_service = 'null'
+
+    def get_handlers(self, app):
+        return []

jupyterhub/handlers/base.py

@@ -45,9 +45,12 @@ from ..metrics import ServerSpawnStatus
 from ..metrics import ServerStopStatus
 from ..metrics import TOTAL_USERS
 from ..objects import Server
+from ..scopes import needs_scope
 from ..spawner import LocalProcessSpawner
 from ..user import User
+from ..utils import AnyTimeoutError
 from ..utils import get_accepted_mimetype
+from ..utils import get_browser_protocol
 from ..utils import maybe_future
 from ..utils import url_path_join
 
@@ -70,6 +73,12 @@ SESSION_COOKIE_NAME = 'jupyterhub-session-id'
 class BaseHandler(RequestHandler):
     """Base Handler class with access to common methods and properties."""
 
+    # by default, only accept cookie-based authentication
+    # The APIHandler base class enables token auth
+    # versionadded: 2.0
+    _accept_cookie_auth = True
+    _accept_token_auth = False
+
     async def prepare(self):
         """Identify the user during the prepare stage of each request
 
@@ -339,6 +348,7 @@ class BaseHandler(RequestHandler):
             auth_info['auth_state'] = await user.get_auth_state()
         return await self.auth_to_user(auth_info, user)
 
+    @functools.lru_cache()
     def get_token(self):
         """get token from authorization header"""
         token = self.get_auth_token()
@@ -409,9 +419,11 @@ class BaseHandler(RequestHandler):
     async def get_current_user(self):
         """get current username"""
         if not hasattr(self, '_jupyterhub_user'):
+            user = None
             try:
-                user = self.get_current_user_token()
-                if user is None:
+                if self._accept_token_auth:
+                    user = self.get_current_user_token()
+                if user is None and self._accept_cookie_auth:
                     user = self.get_current_user_cookie()
                 if user and isinstance(user, User):
                     user = await self.refresh_auth(user)
@@ -490,7 +502,7 @@ class BaseHandler(RequestHandler):
         session_id = self.get_session_cookie()
         if session_id:
             # clear session id
-            self.clear_cookie(SESSION_COOKIE_NAME, **kwargs)
+            self.clear_cookie(SESSION_COOKIE_NAME, path=self.base_url, **kwargs)
 
             if user:
                 # user is logged in, clear any tokens associated with the current session
@@ -569,7 +581,9 @@ class BaseHandler(RequestHandler):
         so other services on this domain can read it.
         """
         session_id = uuid.uuid4().hex
-        self._set_cookie(SESSION_COOKIE_NAME, session_id, encrypted=False)
+        self._set_cookie(
+            SESSION_COOKIE_NAME, session_id, encrypted=False, path=self.base_url
+        )
         return session_id
 
     def set_service_cookie(self, user):
@@ -620,12 +634,10 @@ class BaseHandler(RequestHandler):
         next_url = self.get_argument('next', default='')
         # protect against some browsers' buggy handling of backslash as slash
         next_url = next_url.replace('\\', '%5C')
-        if (next_url + '/').startswith(
-            (
-                f'{self.request.protocol}://{self.request.host}/',
-                f'//{self.request.host}/',
-            )
-        ) or (
+        proto = get_browser_protocol(self.request)
+        host = self.request.host
+
+        if (next_url + '/').startswith((f'{proto}://{host}/', f'//{host}/',)) or (
             self.subdomain_host
             and urlparse(next_url).netloc
             and ("." + urlparse(next_url).netloc).endswith(
@@ -759,8 +771,9 @@ class BaseHandler(RequestHandler):
         # Only set `admin` if the authenticator returned an explicit value.
         if admin is not None and admin != user.admin:
             user.admin = admin
-            roles.assign_default_roles(self.db, entity=user)
-            self.db.commit()
+        # always ensure default roles ('user', 'admin' if admin) are assigned
+        # after a successful login
+        roles.assign_default_roles(self.db, entity=user)
         # always set auth_state and commit,
         # because there could be key-rotation or clearing of previous values
         # going on.
@@ -1019,7 +1032,7 @@ class BaseHandler(RequestHandler):
             await gen.with_timeout(
                 timedelta(seconds=self.slow_spawn_timeout), finish_spawn_future
             )
-        except gen.TimeoutError:
+        except AnyTimeoutError:
             # waiting_for_response indicates server process has started,
             # but is yet to become responsive.
             if spawner._spawn_pending and not spawner._waiting_for_response:
@@ -1166,7 +1179,7 @@ class BaseHandler(RequestHandler):
 
         try:
             await gen.with_timeout(timedelta(seconds=self.slow_stop_timeout), future)
-        except gen.TimeoutError:
+        except AnyTimeoutError:
             # hit timeout, but stop is still pending
             self.log.warning(
                 "User %s:%s server is slow to stop (timeout=%s)",
@@ -1355,7 +1368,7 @@ class UserUrlHandler(BaseHandler):
 
     **Changed Behavior as of 1.0** This handler no longer triggers a spawn. Instead, it checks if:
 
-    1. server is not active, serve page prompting for spawn (status: 503)
+    1. server is not active, serve page prompting for spawn (status: 424)
     2. server is ready (This shouldn't happen! Proxy isn't updated yet. Wait a bit and redirect.)
     3. server is active, redirect to /hub/spawn-pending to monitor launch progress
        (will redirect back when finished)
@@ -1369,12 +1382,22 @@ class UserUrlHandler(BaseHandler):
     Note that this only occurs if bob's server is not already running.
     """
 
+    # accept token auth for API requests that are probably to non-running servers
+    _accept_token_auth = True
+
     def _fail_api_request(self, user_name='', server_name=''):
         """Fail an API request to a not-running server"""
         self.log.warning(
             "Failing suspected API request to not-running server: %s", self.request.path
         )
-        self.set_status(503)
+
+        # If we got here, the server is not running. To differentiate
+        # that the *server* itself is not running, rather than just the particular
+        # resource *in* the server is not found, we return a 424 instead of a 404.
+        # We allow retaining the old behavior to support older JupyterLab versions
+        self.set_status(
+            424 if not self.app.use_legacy_stopped_server_status_code else 503
+        )
         self.set_header("Content-Type", "application/json")
 
         spawn_url = urlparse(self.request.full_url())._replace(query="")
@@ -1426,54 +1449,24 @@ class UserUrlHandler(BaseHandler):
     delete = non_get
 
     @web.authenticated
+    @needs_scope("access:servers")
     async def get(self, user_name, user_path):
         if not user_path:
             user_path = '/'
         current_user = self.current_user
-
-        if (
-            current_user
-            and current_user.name != user_name
-            and current_user.admin
-            and self.settings.get('admin_access', False)
-        ):
-            # allow admins to spawn on behalf of users
+        if user_name != current_user.name:
             user = self.find_user(user_name)
             if user is None:
                 # no such user
-                raise web.HTTPError(404, "No such user %s" % user_name)
+                raise web.HTTPError(404, f"No such user {user_name}")
             self.log.info(
-                "Admin %s requesting spawn on behalf of %s",
-                current_user.name,
-                user.name,
+                f"User {current_user.name} requesting spawn on behalf of {user.name}"
             )
             admin_spawn = True
             should_spawn = True
             redirect_to_self = False
         else:
             user = current_user
-            admin_spawn = False
-            # For non-admins, spawn if the user requested is the current user
-            # otherwise redirect users to their own server
-            should_spawn = current_user and current_user.name == user_name
-            redirect_to_self = not should_spawn
-
-        if redirect_to_self:
-            # logged in as a different non-admin user, redirect to user's own server
-            # this is only a stop-gap for a common mistake,
-            # because the same request will be a 403
-            # if the requested server is running
-            self.statsd.incr('redirects.user_to_user', 1)
-            self.log.warning(
-                "User %s requested server for %s, which they don't own",
-                current_user.name,
-                user_name,
-            )
-            target = url_path_join(current_user.url, user_path or '')
-            if self.request.query:
-                target = url_concat(target, parse_qsl(self.request.query))
-            self.redirect(target)
-            return
 
         # If people visit /user/:user_name directly on the Hub,
         # the redirects will just loop, because the proxy is bypassed.
@@ -1539,15 +1532,17 @@ class UserUrlHandler(BaseHandler):
             self.redirect(pending_url, status=303)
             return
 
-        # if we got here, the server is not running
-        # serve a page prompting for spawn and 503 error
-        # visiting /user/:name no longer triggers implicit spawn
-        # without explicit user action
+        # If we got here, the server is not running. To differentiate
+        # that the *server* itself is not running, rather than just the particular
+        # page *in* the server is not found, we return a 424 instead of a 404.
+        # We allow retaining the old behavior to support older JupyterLab versions
         spawn_url = url_concat(
             url_path_join(self.hub.base_url, "spawn", user.escaped_name, server_name),
             {"next": self.request.uri},
         )
-        self.set_status(503)
+        self.set_status(
+            424 if not self.app.use_legacy_stopped_server_status_code else 503
+        )
 
         auth_state = await user.get_auth_state()
         html = await self.render_template(

jupyterhub/handlers/metrics.py

@@ -12,6 +12,8 @@ class MetricsHandler(BaseHandler):
     Handler to serve Prometheus metrics
     """
 
+    _accept_token_auth = True
+
     @metrics_authentication
     async def get(self):
         self.set_header('Content-Type', CONTENT_TYPE_LATEST)

jupyterhub/handlers/pages.py

@@ -106,22 +106,27 @@ class SpawnHandler(BaseHandler):
         )
 
     @web.authenticated
-    async def get(self, for_user=None, server_name=''):
+    def get(self, user_name=None, server_name=''):
         """GET renders form for spawning with user-specified options
 
         or triggers spawn via redirect if there is no form.
         """
+        # two-stage to get the right signature for @require_scopes filter on user_name
+        if user_name is None:
+            user_name = self.current_user.name
+        if server_name is None:
+            server_name = ""
+        return self._get(user_name=user_name, server_name=server_name)
+
+    @needs_scope("servers")
+    async def _get(self, user_name, server_name):
+        for_user = user_name
 
         user = current_user = self.current_user
-        if for_user is not None and for_user != user.name:
-            if not user.admin:
-                raise web.HTTPError(
-                    403, "Only admins can spawn on behalf of other users"
-                )
-
+        if for_user != user.name:
             user = self.find_user(for_user)
             if user is None:
-                raise web.HTTPError(404, "No such user: %s" % for_user)
+                raise web.HTTPError(404, f"No such user: {for_user}")
 
         if server_name:
             if not self.allow_named_servers:
@@ -141,14 +146,11 @@ class SpawnHandler(BaseHandler):
                     )
 
         if not self.allow_named_servers and user.running:
-            url = self.get_next_url(user, default=user.server_url(server_name))
+            url = self.get_next_url(user, default=user.server_url(""))
             self.log.info("User is running: %s", user.name)
             self.redirect(url)
             return
 
-        if server_name is None:
-            server_name = ''
-
         spawner = user.spawners[server_name]
 
         pending_url = self._get_pending_url(user, server_name)
@@ -189,7 +191,6 @@ class SpawnHandler(BaseHandler):
                     spawner._log_name,
                 )
                 options = await maybe_future(spawner.options_from_query(query_options))
-                pending_url = self._get_pending_url(user, server_name)
                 return await self._wrap_spawn_single_user(
                     user, server_name, spawner, pending_url, options
                 )
@@ -219,14 +220,19 @@ class SpawnHandler(BaseHandler):
             )
 
     @web.authenticated
-    async def post(self, for_user=None, server_name=''):
+    def post(self, user_name=None, server_name=''):
         """POST spawns with user-specified options"""
+        if user_name is None:
+            user_name = self.current_user.name
+        if server_name is None:
+            server_name = ""
+        return self._post(user_name=user_name, server_name=server_name)
+
+    @needs_scope("servers")
+    async def _post(self, user_name, server_name):
+        for_user = user_name
         user = current_user = self.current_user
-        if for_user is not None and for_user != user.name:
-            if not user.admin:
-                raise web.HTTPError(
-                    403, "Only admins can spawn on behalf of other users"
-                )
+        if for_user != user.name:
             user = self.find_user(for_user)
             if user is None:
                 raise web.HTTPError(404, "No such user: %s" % for_user)
@@ -308,10 +314,13 @@ class SpawnHandler(BaseHandler):
         # otherwise it may cause a redirect loop
         if f.done() and f.exception():
             exc = f.exception()
+            self.log.exception(f"Error starting server {spawner._log_name}: {exc}")
+            if isinstance(exc, web.HTTPError):
+                # allow custom HTTPErrors to pass through
+                raise exc
             raise web.HTTPError(
                 500,
-                "Error in Authenticator.pre_spawn_start: %s %s"
-                % (type(exc).__name__, str(exc)),
+                f"Unhandled error starting server {spawner._log_name}",
             )
         return self.redirect(pending_url)
 
@@ -334,13 +343,11 @@ class SpawnPendingHandler(BaseHandler):
     """
 
     @web.authenticated
-    async def get(self, for_user, server_name=''):
+    @needs_scope("servers")
+    async def get(self, user_name, server_name=''):
+        for_user = user_name
         user = current_user = self.current_user
-        if for_user is not None and for_user != current_user.name:
-            if not current_user.admin:
-                raise web.HTTPError(
-                    403, "Only admins can spawn on behalf of other users"
-                )
+        if for_user != current_user.name:
             user = self.find_user(for_user)
             if user is None:
                 raise web.HTTPError(404, "No such user: %s" % for_user)
@@ -384,6 +391,7 @@ class SpawnPendingHandler(BaseHandler):
                 server_name=server_name,
                 spawn_url=spawn_url,
                 failed=True,
+                failed_html_message=getattr(exc, 'jupyterhub_html_message', ''),
                 failed_message=getattr(exc, 'jupyterhub_message', ''),
                 exception=exc,
             )
@@ -465,6 +473,7 @@ class AdminHandler(BaseHandler):
             named_server_limit_per_user=self.named_server_limit_per_user,
             server_version=f'{__version__} {self.version_hash}',
             api_page_limit=self.settings["api_page_default_limit"],
+            base_url=self.settings["base_url"],
         )
         self.finish(html)
 

jupyterhub/proxy.py

@@ -44,6 +44,7 @@ from . import utils
 from .metrics import CHECK_ROUTES_DURATION_SECONDS
 from .metrics import PROXY_POLL_DURATION_SECONDS
 from .objects import Server
+from .utils import AnyTimeoutError
 from .utils import exponential_backoff
 from .utils import url_path_join
 from jupyterhub.traitlets import Command
@@ -718,7 +719,7 @@ class ConfigurableHTTPProxy(Proxy):
                 _check_process()
                 try:
                     await server.wait_up(1)
-                except TimeoutError:
+                except AnyTimeoutError:
                     continue
                 else:
                     break

jupyterhub/roles.py

@@ -2,6 +2,7 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 import re
+from functools import wraps
 from itertools import chain
 
 from sqlalchemy import func
@@ -57,7 +58,7 @@ def get_default_roles():
         {
             'name': 'token',
             'description': 'Token with same permissions as its owner',
-            'scopes': ['all'],
+            'scopes': ['inherit'],
         },
     ]
     return default_roles
@@ -89,6 +90,7 @@ def expand_self_scope(name):
         'users:activity',
         'read:users:activity',
         'servers',
+        'delete:servers',
         'read:servers',
         'tokens',
         'read:tokens',
@@ -213,7 +215,7 @@ def _check_scopes(*args, rolename=None):
       or
       scopes (list): list of scopes to check
 
-    Raises NameError if scope does not exist
+    Raises KeyError if scope does not exist
     """
 
     allowed_scopes = set(scopes.scope_definitions.keys())
@@ -227,35 +229,17 @@ def _check_scopes(*args, rolename=None):
     for scope in args:
         scopename, _, filter_ = scope.partition('!')
         if scopename not in allowed_scopes:
-            raise NameError(f"Scope '{scope}' {log_role} does not exist")
+            if scopename == "all":
+                raise KeyError("Draft scope 'all' is now called 'inherit'")
+            raise KeyError(f"Scope '{scope}' {log_role} does not exist")
         if filter_:
             full_filter = f"!{filter_}"
             if not any(f in scope for f in allowed_filters):
-                raise NameError(
+                raise KeyError(
                     f"Scope filter '{full_filter}' in scope '{scope}' {log_role} does not exist"
                 )
 
 
-def _overwrite_role(role, role_dict):
-    """Overwrites role's description and/or scopes with role_dict if role not 'admin'"""
-    for attr in role_dict.keys():
-        if attr == 'description' or attr == 'scopes':
-            if role.name == 'admin':
-                admin_role_spec = [
-                    r for r in get_default_roles() if r['name'] == 'admin'
-                ][0]
-                if role_dict[attr] != admin_role_spec[attr]:
-                    raise ValueError(
-                        'admin role description or scopes cannot be overwritten'
-                    )
-            else:
-                if role_dict[attr] != getattr(role, attr):
-                    setattr(role, attr, role_dict[attr])
-                    app_log.info(
-                        'Role %r %r attribute has been changed', role.name, attr
-                    )
-
-
 _role_name_pattern = re.compile(r'^[a-z][a-z0-9\-_~\.]{1,253}[a-z0-9]$')
 
 
@@ -290,6 +274,17 @@ def create_role(db, role_dict):
     description = role_dict.get('description')
     scopes = role_dict.get('scopes')
 
+    if name == "admin":
+        for _role in get_default_roles():
+            if _role["name"] == "admin":
+                admin_spec = _role
+                break
+        for key in ["description", "scopes"]:
+            if key in role_dict and role_dict[key] != admin_spec[key]:
+                raise ValueError(
+                    f"Cannot override admin role admin.{key} = {role_dict[key]}"
+                )
+
     # check if the provided scopes exist
     if scopes:
         _check_scopes(*scopes, rolename=role_dict['name'])
@@ -303,8 +298,22 @@ def create_role(db, role_dict):
         if role_dict not in default_roles:
             app_log.info('Role %s added to database', name)
     else:
-        _overwrite_role(role, role_dict)
-
+        for attr in ["description", "scopes"]:
+            try:
+                new_value = role_dict[attr]
+            except KeyError:
+                continue
+            old_value = getattr(role, attr)
+            if new_value != old_value:
+                setattr(role, attr, new_value)
+                app_log.info(
+                    f'Role attribute {role.name}.{attr} has been changed',
+                )
+                app_log.debug(
+                    f'Role attribute {role.name}.{attr} changed from %r to %r',
+                    old_value,
+                    new_value,
+                )
     db.commit()
 
 
@@ -321,81 +330,64 @@ def delete_role(db, rolename):
         db.commit()
         app_log.info('Role %s has been deleted', rolename)
     else:
-        raise NameError('Cannot remove role %r that does not exist', rolename)
+        raise KeyError('Cannot remove role %r that does not exist', rolename)
 
 
-def existing_only(func):
-    """Decorator for checking if objects and roles exist"""
+def _existing_only(func):
+    """Decorator for checking if roles exist"""
 
-    def _check_existence(db, entity, rolename):
-        role = orm.Role.find(db, rolename)
-        if entity is None:
-            raise ValueError(
-                f"{entity!r} of kind {type(entity).__name__!r} does not exist"
-            )
-        elif role is None:
-            raise ValueError("Role %r does not exist" % rolename)
-        else:
-            func(db, entity, role)
+    @wraps(func)
+    def _check_existence(db, entity, role=None, *, rolename=None):
+        if isinstance(role, str):
+            rolename = role
+        if rolename is not None:
+            # if given as a str, lookup role by name
+            role = orm.Role.find(db, rolename)
+        if role is None:
+            raise ValueError(f"Role {rolename} does not exist")
+
+        return func(db, entity, role)
 
     return _check_existence
 
 
-@existing_only
-def grant_role(db, entity, rolename):
+@_existing_only
+def grant_role(db, entity, role):
     """Adds a role for users, services, groups or tokens"""
     if isinstance(entity, orm.APIToken):
         entity_repr = entity
     else:
         entity_repr = entity.name
 
-    if rolename not in entity.roles:
-        entity.roles.append(rolename)
+    if role not in entity.roles:
+        entity.roles.append(role)
         db.commit()
         app_log.info(
             'Adding role %s for %s: %s',
-            rolename.name,
+            role.name,
             type(entity).__name__,
             entity_repr,
         )
 
 
-@existing_only
-def strip_role(db, entity, rolename):
+@_existing_only
+def strip_role(db, entity, role):
     """Removes a role for users, services, groups or tokens"""
     if isinstance(entity, orm.APIToken):
         entity_repr = entity
     else:
         entity_repr = entity.name
-    if rolename in entity.roles:
-        entity.roles.remove(rolename)
+    if role in entity.roles:
+        entity.roles.remove(role)
         db.commit()
         app_log.info(
             'Removing role %s for %s: %s',
-            rolename.name,
+            role.name,
             type(entity).__name__,
             entity_repr,
         )
 
 
-def _switch_default_role(db, obj, admin):
-    """Switch between default user/service and admin roles for users/services"""
-    user_role = orm.Role.find(db, 'user')
-    admin_role = orm.Role.find(db, 'admin')
-
-    def add_and_remove(db, obj, current_role, new_role):
-        if current_role in obj.roles:
-            strip_role(db, entity=obj, rolename=current_role.name)
-        # only add new default role if the user has no other roles
-        if len(obj.roles) < 1:
-            grant_role(db, entity=obj, rolename=new_role.name)
-
-    if admin:
-        add_and_remove(db, obj, user_role, admin_role)
-    else:
-        add_and_remove(db, obj, admin_role, user_role)
-
-
 def _token_allowed_role(db, token, role):
     """Checks if requested role for token does not grant the token
     higher permissions than the token's owner has
@@ -412,56 +404,67 @@ def _token_allowed_role(db, token, role):
 
     expanded_scopes = _get_subscopes(role, owner=owner)
 
-    implicit_permissions = {'all', 'read:all'}
+    implicit_permissions = {'inherit', 'read:inherit'}
     explicit_scopes = expanded_scopes - implicit_permissions
-    # ignore horizontal filters
-    no_filter_scopes = {
-        scope.split('!', 1)[0] if '!' in scope else scope for scope in explicit_scopes
-    }
     # find the owner's scopes
     expanded_owner_scopes = expand_roles_to_scopes(owner)
-    # ignore horizontal filters
-    no_filter_owner_scopes = {
-        scope.split('!', 1)[0] if '!' in scope else scope
-        for scope in expanded_owner_scopes
-    }
-    disallowed_scopes = no_filter_scopes.difference(no_filter_owner_scopes)
+    allowed_scopes = scopes._intersect_expanded_scopes(
+        explicit_scopes, expanded_owner_scopes, db
+    )
+    disallowed_scopes = explicit_scopes.difference(allowed_scopes)
+
     if not disallowed_scopes:
         # no scopes requested outside owner's own scopes
         return True
     else:
         app_log.warning(
-            f"Token requesting scopes exceeding owner {owner.name}: {disallowed_scopes}"
+            f"Token requesting role {role.name} with scopes not held by owner {owner.name}: {disallowed_scopes}"
         )
         return False
 
 
 def assign_default_roles(db, entity):
-    """Assigns default role to an entity:
-    users and services get 'user' role, or admin role if they have admin flag
+    """Assigns default role(s) to an entity:
+
     tokens get 'token' role
+
+    users and services get 'admin' role if they are admin (removed if they are not)
+
+    users always get 'user' role
     """
     if isinstance(entity, orm.Group):
-        pass
-    elif isinstance(entity, orm.APIToken):
-        app_log.debug('Assigning default roles to tokens')
+        return
+
+    if isinstance(entity, orm.APIToken):
+        app_log.debug('Assigning default role to token')
         default_token_role = orm.Role.find(db, 'token')
         if not entity.roles and (entity.user or entity.service) is not None:
             default_token_role.tokens.append(entity)
             app_log.info('Added role %s to token %s', default_token_role.name, entity)
-        db.commit()
-    # users and services can have 'user' or 'admin' roles as default
+            db.commit()
+    # users and services all have 'user' role by default
+    # and optionally 'admin' as well
     else:
         kind = type(entity).__name__
-        app_log.debug(f'Assigning default roles to {kind} {entity.name}')
-        _switch_default_role(db, entity, entity.admin)
+        app_log.debug(f'Assigning default role to {kind} {entity.name}')
+        if entity.admin:
+            grant_role(db, entity=entity, rolename="admin")
+        else:
+            admin_role = orm.Role.find(db, 'admin')
+            if admin_role in entity.roles:
+                strip_role(db, entity=entity, rolename="admin")
+        if kind == "User":
+            grant_role(db, entity=entity, rolename="user")
 
 
 def update_roles(db, entity, roles):
-    """Updates object's roles checking for requested permissions
-    if object is orm.APIToken
+    """Add roles to an entity (token, user, etc.)
+
+    If it is an API token, check role permissions against token owner
+    prior to assignment to avoid permission expansion.
+
+    Otherwise, it just calls `grant_role` for each role.
     """
-    standard_permissions = {'all', 'read:all'}
     for rolename in roles:
         if isinstance(entity, orm.APIToken):
             role = orm.Role.find(db, rolename)
@@ -474,12 +477,11 @@ def update_roles(db, entity, roles):
                     app_log.info('Adding role %s to token: %s', role.name, entity)
                 else:
                     raise ValueError(
-                        f'Requested token role {rolename} of {entity} has more permissions than the token owner'
+                        f'Requested token role {rolename} for {entity} has more permissions than the token owner'
                     )
             else:
-                raise NameError('Role %r does not exist' % rolename)
+                raise KeyError(f'Role {rolename} does not exist')
         else:
-            app_log.debug('Assigning default roles to %s', type(entity).__name__)
             grant_role(db, entity=entity, rolename=rolename)
 
 

jupyterhub/scopes.py

@@ -30,19 +30,22 @@ scope_definitions = {
         'description': 'Your own resources',
         'doc_description': 'The user’s own resources _(metascope for users, resolves to (no_scope) for services)_',
     },
-    'all': {
+    'inherit': {
         'description': 'Anything you have access to',
         'doc_description': 'Everything that the token-owning entity can access _(metascope for tokens)_',
     },
     'admin:users': {
         'description': 'Read, write, create and delete users and their authentication state, not including their servers or tokens.',
-        'subscopes': ['admin:auth_state', 'users', 'read:roles:users'],
+        'subscopes': ['admin:auth_state', 'users', 'read:roles:users', 'delete:users'],
     },
     'admin:auth_state': {'description': 'Read a user’s authentication state.'},
     'users': {
         'description': 'Read and write permissions to user models (excluding servers, tokens and authentication state).',
         'subscopes': ['read:users', 'list:users', 'users:activity'],
     },
+    'delete:users': {
+        'description': "Delete users.",
+    },
     'list:users': {
         'description': 'List users, including at least their names.',
         'subscopes': ['read:users:name'],
@@ -76,12 +79,13 @@ scope_definitions = {
     'admin:server_state': {'description': 'Read and write users’ server state.'},
     'servers': {
         'description': 'Start and stop user servers.',
-        'subscopes': ['read:servers'],
+        'subscopes': ['read:servers', 'delete:servers'],
     },
     'read:servers': {
         'description': 'Read users’ names and their server models (excluding the server state).',
         'subscopes': ['read:users:name'],
     },
+    'delete:servers': {'description': "Stop and delete users' servers."},
     'tokens': {
         'description': 'Read, write, create and delete user tokens.',
         'subscopes': ['read:tokens'],
@@ -89,7 +93,7 @@ scope_definitions = {
     'read:tokens': {'description': 'Read user tokens.'},
     'admin:groups': {
         'description': 'Read and write group information, create and delete groups.',
-        'subscopes': ['groups', 'read:roles:groups'],
+        'subscopes': ['groups', 'read:roles:groups', 'delete:groups'],
     },
     'groups': {
         'description': 'Read and write group information, including adding/removing users to/from groups.',
@@ -104,6 +108,9 @@ scope_definitions = {
         'subscopes': ['read:groups:name'],
     },
     'read:groups:name': {'description': 'Read group names.'},
+    'delete:groups': {
+        'description': "Delete groups.",
+    },
     'list:services': {
         'description': 'List services, including at least their names.',
         'subscopes': ['read:services:name'],
@@ -124,6 +131,9 @@ scope_definitions = {
         'description': 'Read information about the proxy’s routing table, sync the Hub with the proxy and notify the Hub about a new proxy.'
     },
     'shutdown': {'description': 'Shutdown the hub.'},
+    'read:metrics': {
+        'description': "Read prometheus metrics.",
+    },
 }
 
 
@@ -288,7 +298,7 @@ def get_scopes_for(orm_object):
             )
 
     if isinstance(orm_object, orm.APIToken):
-        app_log.warning(f"Authenticated with token {orm_object}")
+        app_log.debug(f"Authenticated with token {orm_object}")
         owner = orm_object.user or orm_object.service
         token_scopes = roles.expand_roles_to_scopes(orm_object)
         if orm_object.client_id != "jupyterhub":
@@ -310,13 +320,13 @@ def get_scopes_for(orm_object):
 
         owner_scopes = roles.expand_roles_to_scopes(owner)
 
-        if token_scopes == {'all'}:
-            # token_scopes is only 'all', return owner scopes as-is
+        if token_scopes == {'inherit'}:
+            # token_scopes is only 'inherit', return scopes inherited from owner as-is
             # short-circuit common case where we don't need to compute an intersection
             return owner_scopes
 
-        if 'all' in token_scopes:
-            token_scopes.remove('all')
+        if 'inherit' in token_scopes:
+            token_scopes.remove('inherit')
             token_scopes |= owner_scopes
 
         intersection = _intersect_expanded_scopes(

jupyterhub/services/auth.py

@@ -3,10 +3,24 @@
 Tokens are sent to the Hub for verification.
 The Hub replies with a JSON model describing the authenticated user.
 
-``HubAuth`` can be used in any application, even outside tornado.
+This contains two levels of authentication:
 
-``HubAuthenticated`` is a mixin class for tornado handlers that should
-authenticate with the Hub.
+- :class:`HubOAuth` - Use OAuth 2 to authenticate browsers with the Hub.
+  This should be used for any service that should respond to browser requests
+  (i.e. most services).
+
+- :class:`HubAuth` - token-only authentication, for a service that only need to handle token-authenticated API requests
+
+The ``Auth`` classes (:class:`HubAuth`, :class:`HubOAuth`)
+can be used in any application, even outside tornado.
+They contain reference implementations of talking to the Hub API
+to resolve a token to a user.
+
+The ``Authenticated`` classes (:class:`HubAuthenticated`, :class:`HubOAuthenticated`)
+are mixins for tornado handlers that should authenticate with the Hub.
+
+If you are using OAuth, you will also need to register an oauth callback handler to complete the oauth process.
+A tornado implementation is provided in :class:`HubOAuthCallbackHandler`.
 
 """
 import base64
@@ -39,6 +53,7 @@ from traitlets import validate
 from traitlets.config import SingletonConfigurable
 
 from ..scopes import _intersect_expanded_scopes
+from ..utils import get_browser_protocol
 from ..utils import url_path_join
 
 
@@ -212,6 +227,7 @@ class HubAuth(SingletonConfigurable):
         help="""The base API URL of the Hub.
 
         Typically `http://hub-ip:hub-port/hub/api`
+        Default: $JUPYTERHUB_API_URL
         """,
     ).tag(config=True)
 
@@ -227,7 +243,10 @@ class HubAuth(SingletonConfigurable):
         os.getenv('JUPYTERHUB_API_TOKEN', ''),
         help="""API key for accessing Hub API.
 
-        Generate with `jupyterhub token [username]` or add to JupyterHub.services config.
+        Default: $JUPYTERHUB_API_TOKEN
+
+        Loaded from services configuration in jupyterhub_config.
+        Will be auto-generated for hub-managed services.
         """,
     ).tag(config=True)
 
@@ -236,6 +255,7 @@ class HubAuth(SingletonConfigurable):
         help="""The URL prefix for the Hub itself.
 
         Typically /hub/
+        Default: $JUPYTERHUB_BASE_URL
         """,
     ).tag(config=True)
 
@@ -753,7 +773,7 @@ class HubOAuth(HubAuth):
             # OAuth that doesn't complete shouldn't linger too long.
             'max_age': 600,
         }
-        if handler.request.protocol == 'https':
+        if get_browser_protocol(handler.request) == 'https':
             kwargs['secure'] = True
         # load user cookie overrides
         kwargs.update(self.cookie_options)
@@ -793,7 +813,7 @@ class HubOAuth(HubAuth):
     def set_cookie(self, handler, access_token):
         """Set a cookie recording OAuth result"""
         kwargs = {'path': self.base_url, 'httponly': True}
-        if handler.request.protocol == 'https':
+        if get_browser_protocol(handler.request) == 'https':
             kwargs['secure'] = True
         # load user cookie overrides
         kwargs.update(self.cookie_options)
@@ -854,8 +874,6 @@ class HubAuthenticated:
     Examples::
 
         class MyHandler(HubAuthenticated, web.RequestHandler):
-            hub_users = {'inara', 'mal'}
-
             def initialize(self, hub_auth):
                 self.hub_auth = hub_auth
 
@@ -865,6 +883,7 @@ class HubAuthenticated:
 
     """
 
+    # deprecated, pre-2.0 allow sets
     hub_services = None  # set of allowed services
     hub_users = None  # set of allowed users
     hub_groups = None  # set of allowed groups
@@ -960,6 +979,10 @@ class HubAuthenticated:
                 raise UserNotAllowed(model)
 
         # proceed with the pre-2.0 way if hub_scopes is not set
+        warnings.warn(
+            "hub_scopes ($JUPYTERHUB not set, proceeding with pre-2.0 authentication",
+            DeprecationWarning,
+        )
 
         if self.allow_admin and model.get('admin', False):
             app_log.debug("Allowing Hub admin %s", name)
@@ -1023,8 +1046,8 @@ class HubAuthenticated:
             self._hub_auth_user_cache = None
             raise
 
-        # store tokens passed via url or header in a cookie for future requests
-        url_token = self.hub_auth.get_token(self)
+        # store ?token=... tokens passed via url in a cookie for future requests
+        url_token = self.get_argument('token', '')
         if (
             user_model
             and url_token

jupyterhub/singleuser/app.py

@@ -1,7 +1,12 @@
 """Make a single-user app based on the environment:
 
 - $JUPYTERHUB_SINGLEUSER_APP, the base Application class, to be wrapped in JupyterHub authentication.
-  default: notebook.notebookapp.NotebookApp
+  default: jupyter_server.serverapp.ServerApp
+
+.. versionchanged:: 2.0
+
+    Default app changed to launch `jupyter labhub`.
+    Use JUPYTERHUB_SINGLEUSER_APP=notebook.notebookapp.NotebookApp for the legacy 'classic' notebook server.
 """
 import os
 
@@ -9,12 +14,55 @@ from traitlets import import_item
 
 from .mixins import make_singleuser_app
 
-JUPYTERHUB_SINGLEUSER_APP = (
-    os.environ.get("JUPYTERHUB_SINGLEUSER_APP") or "notebook.notebookapp.NotebookApp"
-)
+JUPYTERHUB_SINGLEUSER_APP = os.environ.get("JUPYTERHUB_SINGLEUSER_APP")
+
+
+if JUPYTERHUB_SINGLEUSER_APP:
+    App = import_item(JUPYTERHUB_SINGLEUSER_APP)
+else:
+    App = None
+    _import_error = None
+    for JUPYTERHUB_SINGLEUSER_APP in (
+        "jupyter_server.serverapp.ServerApp",
+        "notebook.notebookapp.NotebookApp",
+    ):
+        try:
+            App = import_item(JUPYTERHUB_SINGLEUSER_APP)
+        except ImportError as e:
+            continue
+            if _import_error is None:
+                _import_error = e
+        else:
+            break
+    if App is None:
+        raise _import_error
 
-App = import_item(JUPYTERHUB_SINGLEUSER_APP)
 
 SingleUserNotebookApp = make_singleuser_app(App)
 
-main = SingleUserNotebookApp.launch_instance
+
+def main():
+    """Launch a jupyterhub single-user server"""
+    if not os.environ.get("JUPYTERHUB_SINGLEUSER_APP"):
+        # app not specified, launch jupyter-labhub by default,
+        # if jupyterlab is recent enough (3.1).
+        # This is a minimally extended ServerApp that does:
+        # 1. ensure lab extension is enabled, and
+        # 2. set default URL to `/lab`
+        import re
+
+        _version_pat = re.compile(r"(\d+)\.(\d+)")
+        try:
+            import jupyterlab
+            from jupyterlab.labhubapp import SingleUserLabApp
+
+            m = _version_pat.match(jupyterlab.__version__)
+        except Exception:
+            m = None
+
+        if m is not None:
+            version_tuple = tuple(int(v) for v in m.groups())
+            if version_tuple >= (3, 1):
+                return SingleUserLabApp.launch_instance()
+
+    return SingleUserNotebookApp.launch_instance()

jupyterhub/singleuser/mixins.py

@@ -18,6 +18,7 @@ import sys
 import warnings
 from datetime import datetime
 from datetime import timezone
+from importlib import import_module
 from textwrap import dedent
 from urllib.parse import urlparse
 
@@ -606,10 +607,34 @@ class SingleUserNotebookAppMixin(Configurable):
             t = self.hub_activity_interval * (1 + 0.2 * (random.random() - 0.5))
             await asyncio.sleep(t)
 
+    def _log_app_versions(self):
+        """Log application versions at startup
+
+        Logs versions of jupyterhub and singleuser-server base versions (jupyterlab, jupyter_server, notebook)
+        """
+        self.log.info(f"Starting jupyterhub single-user server version {__version__}")
+
+        # don't log these package versions
+        seen = {"jupyterhub", "traitlets", "jupyter_core", "builtins"}
+
+        for cls in self.__class__.mro():
+            module_name = cls.__module__.partition(".")[0]
+            if module_name not in seen:
+                seen.add(module_name)
+                try:
+                    mod = import_module(module_name)
+                    mod_version = getattr(mod, "__version__")
+                except Exception:
+                    mod_version = ""
+                self.log.info(
+                    f"Extending {cls.__module__}.{cls.__name__} from {module_name} {mod_version}"
+                )
+
     def initialize(self, argv=None):
         # disable trash by default
         # this can be re-enabled by config
         self.config.FileContentsManager.delete_to_trash = False
+        self._log_app_versions()
         return super().initialize(argv)
 
     def start(self):
@@ -715,6 +740,18 @@ class SingleUserNotebookAppMixin(Configurable):
         orig_loader = env.loader
         env.loader = ChoiceLoader([FunctionLoader(get_page), orig_loader])
 
+    def load_server_extensions(self):
+        # Loading LabApp sets $JUPYTERHUB_API_TOKEN on load, which is incorrect
+        r = super().load_server_extensions()
+        # clear the token in PageConfig at this step
+        # so that cookie auth is used
+        # FIXME: in the future,
+        # it would probably make sense to set page_config.token to the token
+        # from the current request.
+        if 'page_config_data' in self.web_app.settings:
+            self.web_app.settings['page_config_data']['token'] = ''
+        return r
+
 
 def detect_base_package(App):
     """Detect the base package for an App class

jupyterhub/spawner.py

@@ -15,8 +15,6 @@ from subprocess import Popen
 from tempfile import mkdtemp
 from urllib.parse import urlparse
 
-if os.name == 'nt':
-    import psutil
 from async_generator import aclosing
 from sqlalchemy import inspect
 from tornado.ioloop import PeriodicCallback
@@ -38,12 +36,14 @@ from .objects import Server
 from .traitlets import ByteSpecification
 from .traitlets import Callable
 from .traitlets import Command
+from .utils import AnyTimeoutError
 from .utils import exponential_backoff
 from .utils import maybe_future
 from .utils import random_port
 from .utils import url_path_join
 
-# FIXME: remove when we drop Python 3.5 support
+if os.name == 'nt':
+    import psutil
 
 
 def _quote_safe(s):
@@ -1263,7 +1263,7 @@ class Spawner(LoggingConfigurable):
                 timeout=timeout,
             )
             return r
-        except TimeoutError:
+        except AnyTimeoutError:
             return False
 
 

jupyterhub/tests/test_api.py

@@ -9,6 +9,7 @@ from datetime import timedelta
 from unittest import mock
 from urllib.parse import quote
 from urllib.parse import urlparse
+from urllib.parse import urlunparse
 
 from pytest import fixture
 from pytest import mark
@@ -65,7 +66,15 @@ async def test_auth_api(app):
     assert r.status_code == 403
 
 
-async def test_cors_checks(app):
+@mark.parametrize(
+    "content_type, status",
+    [
+        ("text/plain", 403),
+        # accepted, but invalid
+        ("application/json; charset=UTF-8", 400),
+    ],
+)
+async def test_post_content_type(app, content_type, status):
     url = ujoin(public_host(app), app.hub.base_url)
     host = urlparse(url).netloc
     # add admin user
@@ -74,42 +83,6 @@ async def test_cors_checks(app):
         user = add_user(app.db, name='admin', admin=True)
     cookies = await app.login_user('admin')
 
-    r = await api_request(
-        app, 'users', headers={'Authorization': '', 'Referer': 'null'}, cookies=cookies
-    )
-    assert r.status_code == 403
-
-    r = await api_request(
-        app,
-        'users',
-        headers={
-            'Authorization': '',
-            'Referer': 'http://attack.com/csrf/vulnerability',
-        },
-        cookies=cookies,
-    )
-    assert r.status_code == 403
-
-    r = await api_request(
-        app,
-        'users',
-        headers={'Authorization': '', 'Referer': url, 'Host': host},
-        cookies=cookies,
-    )
-    assert r.status_code == 200
-
-    r = await api_request(
-        app,
-        'users',
-        headers={
-            'Authorization': '',
-            'Referer': ujoin(url, 'foo/bar/baz/bat'),
-            'Host': host,
-        },
-        cookies=cookies,
-    )
-    assert r.status_code == 200
-
     r = await api_request(
         app,
         'users',
@@ -117,24 +90,115 @@ async def test_cors_checks(app):
         data='{}',
         headers={
             "Authorization": "",
-            "Content-Type": "text/plain",
+            "Content-Type": content_type,
         },
         cookies=cookies,
     )
-    assert r.status_code == 403
+    assert r.status_code == status
+
+
+@mark.parametrize(
+    "host, referer, extraheaders, status",
+    [
+        ('$host', '$url', {}, 200),
+        (None, None, {}, 200),
+        (None, 'null', {}, 403),
+        (None, 'http://attack.com/csrf/vulnerability', {}, 403),
+        ('$host', {"path": "/user/someuser"}, {}, 403),
+        ('$host', {"path": "{path}/foo/bar/subpath"}, {}, 200),
+        # mismatch host
+        ("mismatch.com", "$url", {}, 403),
+        # explicit host, matches
+        ("fake.example", {"netloc": "fake.example"}, {}, 200),
+        # explicit port, matches implicit port
+        ("fake.example:80", {"netloc": "fake.example"}, {}, 200),
+        # explicit port, mismatch
+        ("fake.example:81", {"netloc": "fake.example"}, {}, 403),
+        # implicit ports, mismatch proto
+        ("fake.example", {"netloc": "fake.example", "scheme": "https"}, {}, 403),
+        # explicit ports, match
+        ("fake.example:81", {"netloc": "fake.example:81"}, {}, 200),
+        # Test proxy protocol defined headers taken into account by utils.get_browser_protocol
+        (
+            "fake.example",
+            {"netloc": "fake.example", "scheme": "https"},
+            {'X-Scheme': 'https'},
+            200,
+        ),
+        (
+            "fake.example",
+            {"netloc": "fake.example", "scheme": "https"},
+            {'X-Forwarded-Proto': 'https'},
+            200,
+        ),
+        (
+            "fake.example",
+            {"netloc": "fake.example", "scheme": "https"},
+            {
+                'Forwarded': 'host=fake.example;proto=https,for=1.2.34;proto=http',
+                'X-Scheme': 'http',
+            },
+            200,
+        ),
+        (
+            "fake.example",
+            {"netloc": "fake.example", "scheme": "https"},
+            {
+                'Forwarded': 'host=fake.example;proto=http,for=1.2.34;proto=http',
+                'X-Scheme': 'https',
+            },
+            403,
+        ),
+        ("fake.example", {"netloc": "fake.example"}, {'X-Scheme': 'https'}, 403),
+        ("fake.example", {"netloc": "fake.example"}, {'X-Scheme': 'https, http'}, 403),
+    ],
+)
+async def test_cors_check(request, app, host, referer, extraheaders, status):
+    url = ujoin(public_host(app), app.hub.base_url)
+    real_host = urlparse(url).netloc
+    if host == "$host":
+        host = real_host
+
+    if referer == '$url':
+        referer = url
+    elif isinstance(referer, dict):
+        parsed_url = urlparse(url)
+        # apply {}
+        url_ns = {key: getattr(parsed_url, key) for key in parsed_url._fields}
+        for key, value in referer.items():
+            referer[key] = value.format(**url_ns)
+        referer = urlunparse(parsed_url._replace(**referer))
+
+    # disable default auth header, cors is for cookie auth
+    headers = {"Authorization": ""}
+    if host is not None:
+        headers['X-Forwarded-Host'] = host
+    if referer is not None:
+        headers['Referer'] = referer
+    headers.update(extraheaders)
+
+    # add admin user
+    user = find_user(app.db, 'admin')
+    if user is None:
+        user = add_user(app.db, name='admin', admin=True)
+    cookies = await app.login_user('admin')
+
+    # test custom forwarded_host_header behavior
+    app.forwarded_host_header = 'X-Forwarded-Host'
+
+    # reset the config after the test to avoid leaking state
+    def reset_header():
+        app.forwarded_host_header = ""
+
+    request.addfinalizer(reset_header)
 
     r = await api_request(
         app,
         'users',
-        method='post',
-        data='{}',
-        headers={
-            "Authorization": "",
-            "Content-Type": "application/json; charset=UTF-8",
-        },
+        headers=headers,
         cookies=cookies,
     )
-    assert r.status_code == 400  # accepted, but invalid
+    assert r.status_code == status
 
 
 # --------------
@@ -160,6 +224,8 @@ def normalize_user(user):
     """
     for key in ('created', 'last_activity'):
         user[key] = normalize_timestamp(user[key])
+    if 'roles' in user:
+        user['roles'] = sorted(user['roles'])
     if 'servers' in user:
         for server in user['servers'].values():
             for key in ('started', 'last_activity'):
@@ -212,7 +278,12 @@ async def test_get_users(app):
     }
     assert users == [
         fill_user(
-            {'name': 'admin', 'admin': True, 'roles': ['admin'], 'auth_state': None}
+            {
+                'name': 'admin',
+                'admin': True,
+                'roles': ['admin', 'user'],
+                'auth_state': None,
+            }
         ),
         fill_user(user_model),
     ]
@@ -597,7 +668,7 @@ async def test_add_multi_user_admin(app):
         assert user is not None
         assert user.name == name
         assert user.admin
-        assert orm.Role.find(db, 'user') not in user.roles
+        assert orm.Role.find(db, 'user') in user.roles
         assert orm.Role.find(db, 'admin') in user.roles
 
 
@@ -637,7 +708,7 @@ async def test_add_admin(app):
     assert user.name == name
     assert user.admin
     # assert newadmin has default 'admin' role
-    assert orm.Role.find(db, 'user') not in user.roles
+    assert orm.Role.find(db, 'user') in user.roles
     assert orm.Role.find(db, 'admin') in user.roles
 
 
@@ -672,7 +743,7 @@ async def test_make_admin(app):
     assert user is not None
     assert user.name == name
     assert user.admin
-    assert orm.Role.find(db, 'user') not in user.roles
+    assert orm.Role.find(db, 'user') in user.roles
     assert orm.Role.find(db, 'admin') in user.roles
 
 
@@ -972,6 +1043,11 @@ async def test_bad_spawn(app, bad_spawn):
     assert app.users.count_active_users()['pending'] == 0
 
 
+async def test_spawn_nosuch_user(app):
+    r = await api_request(app, 'users', "nosuchuser", 'server', method='post')
+    assert r.status_code == 404
+
+
 async def test_slow_bad_spawn(app, no_patience, slow_bad_spawn):
     db = app.db
     name = 'zaphod'
@@ -1366,8 +1442,8 @@ async def test_get_new_token_deprecated(app, headers, status):
 @mark.parametrize(
     "headers, status, note, expires_in",
     [
-        ({}, 200, 'test note', None),
-        ({}, 200, '', 100),
+        ({}, 201, 'test note', None),
+        ({}, 201, '', 100),
         ({'Authorization': 'token bad'}, 403, '', None),
     ],
 )
@@ -1386,7 +1462,7 @@ async def test_get_new_token(app, headers, status, note, expires_in):
         app, 'users/admin/tokens', method='post', headers=headers, data=body
     )
     assert r.status_code == status
-    if status != 200:
+    if status != 201:
         return
     # check the new-token reply
     reply = r.json()
@@ -1424,10 +1500,10 @@ async def test_get_new_token(app, headers, status, note, expires_in):
 @mark.parametrize(
     "as_user, for_user, status",
     [
-        ('admin', 'other', 200),
+        ('admin', 'other', 201),
         ('admin', 'missing', 403),
         ('user', 'other', 403),
-        ('user', 'user', 200),
+        ('user', 'user', 201),
     ],
 )
 async def test_token_for_user(app, as_user, for_user, status):
@@ -1448,7 +1524,7 @@ async def test_token_for_user(app, as_user, for_user, status):
     )
     assert r.status_code == status
     reply = r.json()
-    if status != 200:
+    if status != 201:
         return
     assert 'token' in reply
 
@@ -1486,7 +1562,7 @@ async def test_token_authenticator_noauth(app):
         data=json.dumps(data) if data else None,
         noauth=True,
     )
-    assert r.status_code == 200
+    assert r.status_code == 201
     reply = r.json()
     assert 'token' in reply
     r = await api_request(app, 'authorizations', 'token', reply['token'])
@@ -1509,7 +1585,7 @@ async def test_token_authenticator_dict_noauth(app):
         data=json.dumps(data) if data else None,
         noauth=True,
     )
-    assert r.status_code == 200
+    assert r.status_code == 201
     reply = r.json()
     assert 'token' in reply
     r = await api_request(app, 'authorizations', 'token', reply['token'])

jupyterhub/tests/test_app.py

@@ -247,6 +247,7 @@ async def test_load_groups(tmpdir, request):
         kwargs['internal_certs_location'] = str(tmpdir)
     hub = MockHub(**kwargs)
     hub.init_db()
+    await hub.init_role_creation()
     await hub.init_users()
     await hub.init_groups()
     db = hub.db

jupyterhub/tests/test_auth.py

@@ -3,6 +3,7 @@
 # Distributed under the terms of the Modified BSD License.
 import logging
 from unittest import mock
+from urllib.parse import urlparse
 
 import pytest
 from requests import HTTPError
@@ -12,6 +13,8 @@ from .mocking import MockPAMAuthenticator
 from .mocking import MockStructGroup
 from .mocking import MockStructPasswd
 from .utils import add_user
+from .utils import async_requests
+from .utils import public_url
 from jupyterhub import auth
 from jupyterhub import crypto
 from jupyterhub import orm
@@ -515,3 +518,12 @@ def test_deprecated_methods_subclass():
     assert authenticator.check_whitelist("subclass-allowed")
     assert not authenticator.check_allowed("otheruser")
     assert not authenticator.check_whitelist("otheruser")
+
+
+async def test_nullauthenticator(app):
+    with mock.patch.dict(
+        app.tornado_settings, {"authenticator": auth.NullAuthenticator(parent=app)}
+    ):
+        r = await async_requests.get(public_url(app))
+    assert urlparse(r.url).path.endswith("/hub/login")
+    assert r.status_code == 403

jupyterhub/tests/test_internal_ssl_connections.py

@@ -1,16 +1,13 @@
 """Tests for jupyterhub internal_ssl connections"""
 import sys
 import time
-from subprocess import check_output
 from unittest import mock
-from urllib.parse import urlparse
 
 import pytest
 from requests.exceptions import ConnectionError
 from requests.exceptions import SSLError
-from tornado import gen
 
-import jupyterhub
+from ..utils import AnyTimeoutError
 from .test_api import add_user
 from .utils import async_requests
 
@@ -35,7 +32,7 @@ async def wait_for_spawner(spawner, timeout=10):
         assert status is None
         try:
             await wait()
-        except TimeoutError:
+        except AnyTimeoutError:
             continue
         else:
             break

jupyterhub/tests/test_metrics.py

@@ -1,9 +1,13 @@
 import json
+from unittest import mock
+
+import pytest
 
-from .utils import add_user
 from .utils import api_request
+from .utils import get_page
 from jupyterhub import metrics
 from jupyterhub import orm
+from jupyterhub import roles
 
 
 async def test_total_users(app):
@@ -32,3 +36,42 @@ async def test_total_users(app):
 
     sample = metrics.TOTAL_USERS.collect()[0].samples[0]
     assert sample.value == num_users
+
+
+@pytest.mark.parametrize(
+    "authenticate_prometheus, authenticated, authorized, success",
+    [
+        (True, True, True, True),
+        (True, True, False, False),
+        (True, False, False, False),
+        (False, True, True, True),
+        (False, False, False, True),
+    ],
+)
+async def test_metrics_auth(
+    app,
+    authenticate_prometheus,
+    authenticated,
+    authorized,
+    success,
+    create_temp_role,
+    user,
+):
+    if authorized:
+        role = create_temp_role(["read:metrics"])
+        roles.grant_role(app.db, user, role)
+
+    headers = {}
+    if authenticated:
+        token = user.new_api_token()
+        headers["Authorization"] = f"token {token}"
+
+    with mock.patch.dict(
+        app.tornado_settings, {"authenticate_prometheus": authenticate_prometheus}
+    ):
+        r = await get_page("metrics", app, headers=headers)
+    if success:
+        assert r.status_code == 200
+    else:
+        assert r.status_code == 403
+        assert 'read:metrics' in r.text

jupyterhub/tests/test_pages.py

@@ -12,6 +12,7 @@ from tornado.escape import url_escape
 from tornado.httputil import url_concat
 
 from .. import orm
+from .. import roles
 from .. import scopes
 from ..auth import Authenticator
 from ..handlers import BaseHandler
@@ -20,7 +21,6 @@ from ..utils import url_path_join as ujoin
 from .mocking import FalsyCallableFormSpawner
 from .mocking import FormSpawner
 from .test_api import next_event
-from .utils import add_user
 from .utils import api_request
 from .utils import async_requests
 from .utils import AsyncSession
@@ -48,16 +48,16 @@ async def test_root_auth(app):
     # if spawning was quick, there will be one more entry that's public_url(user)
 
 
-async def test_root_redirect(app):
+async def test_root_redirect(app, user):
     name = 'wash'
     cookies = await app.login_user(name)
-    next_url = ujoin(app.base_url, 'user/other/test.ipynb')
+    next_url = ujoin(app.base_url, f'user/{user.name}/test.ipynb')
     url = '/?' + urlencode({'next': next_url})
     r = await get_page(url, app, cookies=cookies)
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, 'hub/user/%s/test.ipynb' % name)
-    # serve "server not running" page, which has status 503
-    assert r.status_code == 503
+    assert path == ujoin(app.base_url, f'hub/user/{user.name}/test.ipynb')
+    # preserves choice to requested user, which 404s as unavailable without access
+    assert r.status_code == 404
 
 
 async def test_root_default_url_noauth(app):
@@ -172,7 +172,7 @@ async def test_spawn_redirect(app):
     r = await get_page('user/' + name, app, hub=False, cookies=cookies)
     path = urlparse(r.url).path
     assert path == ujoin(app.base_url, 'hub/user/%s/' % name)
-    assert r.status_code == 503
+    assert r.status_code == 424
 
 
 async def test_spawn_handler_access(app):
@@ -203,13 +203,34 @@ async def test_spawn_handler_access(app):
     r.raise_for_status()
 
 
-async def test_spawn_admin_access(app, admin_access):
-    """GET /user/:name as admin with admin-access spawns user's server"""
-    cookies = await app.login_user('admin')
-    name = 'mariel'
-    user = add_user(app.db, app=app, name=name)
-    app.db.commit()
+@pytest.mark.parametrize("has_access", ["all", "user", "group", False])
+async def test_spawn_other_user(
+    app, user, username, group, create_temp_role, has_access
+):
+    """GET /user/:name as another user with access to spawns user's server"""
+    cookies = await app.login_user(username)
+    requester = app.users[username]
+    name = user.name
+
+    if has_access:
+        if has_access == "group":
+            group.users.append(user)
+            app.db.commit()
+            scopes = [
+                f"access:servers!group={group.name}",
+                f"servers!group={group.name}",
+            ]
+        elif has_access == "all":
+            scopes = ["access:servers", "servers"]
+        elif has_access == "user":
+            scopes = [f"access:servers!user={user.name}", f"servers!user={user.name}"]
+        role = create_temp_role(scopes)
+        roles.grant_role(app.db, requester, role)
+
     r = await get_page('spawn/' + name, app, cookies=cookies)
+    if not has_access:
+        assert r.status_code == 404
+        return
     r.raise_for_status()
 
     while '/spawn-pending/' in r.url:
@@ -248,14 +269,36 @@ async def test_spawn_page_falsy_callable(app):
     assert history[1] == ujoin(public_url(app), "hub/spawn-pending/erik")
 
 
-async def test_spawn_page_admin(app, admin_access):
+@pytest.mark.parametrize("has_access", ["all", "user", "group", False])
+async def test_spawn_page_access(
+    app, has_access, group, username, user, create_temp_role
+):
+    cookies = await app.login_user(username)
+    requester = app.users[username]
+    if has_access:
+        if has_access == "group":
+            group.users.append(user)
+            app.db.commit()
+            scopes = [
+                f"access:servers!group={group.name}",
+                f"servers!group={group.name}",
+            ]
+        elif has_access == "all":
+            scopes = ["access:servers", "servers"]
+        elif has_access == "user":
+            scopes = [f"access:servers!user={user.name}", f"servers!user={user.name}"]
+        role = create_temp_role(scopes)
+        roles.grant_role(app.db, requester, role)
+
     with mock.patch.dict(app.users.settings, {'spawner_class': FormSpawner}):
-        cookies = await app.login_user('admin')
-        u = add_user(app.db, app=app, name='melanie')
-        r = await get_page('spawn/' + u.name, app, cookies=cookies)
-        assert r.url.endswith('/spawn/' + u.name)
+        r = await get_page('spawn/' + user.name, app, cookies=cookies)
+        if not has_access:
+            assert r.status_code == 404
+            return
+        assert r.status_code == 200
+        assert r.url.endswith('/spawn/' + user.name)
         assert FormSpawner.options_form in r.text
-        assert f"Spawning server for {u.name}" in r.text
+        assert f"Spawning server for {user.name}" in r.text
 
 
 async def test_spawn_with_query_arguments(app):
@@ -322,18 +365,39 @@ async def test_spawn_form(app):
         }
 
 
-async def test_spawn_form_admin_access(app, admin_access):
+@pytest.mark.parametrize("has_access", ["all", "user", "group", False])
+async def test_spawn_form_other_user(
+    app, username, user, group, create_temp_role, has_access
+):
+    cookies = await app.login_user(username)
+    requester = app.users[username]
+    if has_access:
+        if has_access == "group":
+            group.users.append(user)
+            app.db.commit()
+            scopes = [
+                f"access:servers!group={group.name}",
+                f"servers!group={group.name}",
+            ]
+        elif has_access == "all":
+            scopes = ["access:servers", "servers"]
+        elif has_access == "user":
+            scopes = [f"access:servers!user={user.name}", f"servers!user={user.name}"]
+        role = create_temp_role(scopes)
+        roles.grant_role(app.db, requester, role)
+
     with mock.patch.dict(app.tornado_settings, {'spawner_class': FormSpawner}):
         base_url = ujoin(public_host(app), app.hub.base_url)
-        cookies = await app.login_user('admin')
-        u = add_user(app.db, app=app, name='martha')
-        next_url = ujoin(app.base_url, 'user', u.name, 'tree')
+        next_url = ujoin(app.base_url, 'user', user.name, 'tree')
 
         r = await async_requests.post(
-            url_concat(ujoin(base_url, 'spawn', u.name), {'next': next_url}),
+            url_concat(ujoin(base_url, 'spawn', user.name), {'next': next_url}),
             cookies=cookies,
             data={'bounds': ['-3', '3'], 'energy': '938MeV'},
         )
+        if not has_access:
+            assert r.status_code == 404
+            return
         r.raise_for_status()
 
         while '/spawn-pending/' in r.url:
@@ -342,8 +406,8 @@ async def test_spawn_form_admin_access(app, admin_access):
             r.raise_for_status()
 
         assert r.history
-        assert r.url.startswith(public_url(app, u))
-        assert u.spawner.user_options == {
+        assert r.url.startswith(public_url(app, user))
+        assert user.spawner.user_options == {
             'energy': '938MeV',
             'bounds': [-3, 3],
             'notspecified': 5,
@@ -498,31 +562,54 @@ async def test_user_redirect_hook(app, username):
     assert redirected_url.path == ujoin(app.base_url, 'user', username, 'terminals/1')
 
 
-async def test_user_redirect_deprecated(app, username):
-    """redirecting from /user/someonelse/ URLs (deprecated)"""
+@pytest.mark.parametrize("has_access", ["all", "user", "group", False])
+async def test_other_user_url(app, username, user, group, create_temp_role, has_access):
+    """Test accessing /user/someonelse/ URLs when the server is not running
+
+    Used to redirect to your own server,
+    which produced inconsistent behavior depending on whether the server was running.
+    """
     name = username
     cookies = await app.login_user(name)
+    other_user = user
+    requester = app.users[name]
+    other_user_url = f"/user/{other_user.name}"
+    if has_access:
+        if has_access == "group":
+            group.users.append(other_user)
+            app.db.commit()
+            scopes = [f"access:servers!group={group.name}"]
+        elif has_access == "all":
+            scopes = ["access:servers"]
+        elif has_access == "user":
+            scopes = [f"access:servers!user={other_user.name}"]
+        role = create_temp_role(scopes)
+        roles.grant_role(app.db, requester, role)
+        status = 424
+    else:
+        # 404 - access denied without revealing if the user exists
+        status = 404
 
-    r = await get_page('/user/baduser', app, cookies=cookies, hub=False)
+    r = await get_page(other_user_url, app, cookies=cookies, hub=False)
     print(urlparse(r.url))
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, 'hub/user/%s/' % name)
-    assert r.status_code == 503
+    assert path == ujoin(app.base_url, f'hub/user/{other_user.name}/')
+    assert r.status_code == status
 
-    r = await get_page('/user/baduser/test.ipynb', app, cookies=cookies, hub=False)
+    r = await get_page(f'{other_user_url}/test.ipynb', app, cookies=cookies, hub=False)
     print(urlparse(r.url))
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, 'hub/user/%s/test.ipynb' % name)
-    assert r.status_code == 503
+    assert path == ujoin(app.base_url, f'hub/user/{other_user.name}/test.ipynb')
+    assert r.status_code == status
 
-    r = await get_page('/user/baduser/test.ipynb', app, hub=False)
+    r = await get_page(f'{other_user_url}/test.ipynb', app, hub=False)
     r.raise_for_status()
     print(urlparse(r.url))
     path = urlparse(r.url).path
     assert path == ujoin(app.base_url, '/hub/login')
     query = urlparse(r.url).query
     assert query == urlencode(
-        {'next': ujoin(app.base_url, '/hub/user/baduser/test.ipynb')}
+        {'next': ujoin(app.base_url, f'/hub/user/{other_user.name}/test.ipynb')}
     )
 
 
@@ -578,6 +665,41 @@ async def test_login_page(app, url, params, redirected_url, form_action):
     assert action.endswith(form_action)
 
 
+@pytest.mark.parametrize(
+    "url, token_in",
+    [
+        ("/home", "url"),
+        ("/home", "header"),
+        ("/login", "url"),
+        ("/login", "header"),
+    ],
+)
+async def test_page_with_token(app, user, url, token_in):
+    cookies = await app.login_user(user.name)
+    token = user.new_api_token()
+    if token_in == "url":
+        url = url_concat(url, {"token": token})
+        headers = None
+    elif token_in == "header":
+        headers = {
+            "Authorization": f"token {token}",
+        }
+
+    # request a page with ?token= in URL shouldn't be allowed
+    r = await get_page(
+        url,
+        app,
+        headers=headers,
+        allow_redirects=False,
+    )
+    if "/hub/login" in r.url:
+        assert r.status_code == 200
+    else:
+        assert r.status_code == 302
+        assert r.headers["location"].partition("?")[0].endswith("/hub/login")
+    assert not r.cookies
+
+
 async def test_login_fail(app):
     name = 'wash'
     base_url = public_url(app)
@@ -1061,24 +1183,18 @@ async def test_token_page(app):
 async def test_server_not_running_api_request(app):
     cookies = await app.login_user("bees")
     r = await get_page("user/bees/api/status", app, hub=False, cookies=cookies)
-    assert r.status_code == 503
+    assert r.status_code == 424
     assert r.headers["content-type"] == "application/json"
     message = r.json()['message']
     assert ujoin(app.base_url, "hub/spawn/bees") in message
     assert " /user/bees" in message
 
 
-async def test_metrics_no_auth(app):
-    r = await get_page("metrics", app)
-    assert r.status_code == 403
-
-
-async def test_metrics_auth(app):
-    cookies = await app.login_user('river')
-    metrics_url = ujoin(public_host(app), app.hub.base_url, 'metrics')
-    r = await get_page("metrics", app, cookies=cookies)
-    assert r.status_code == 200
-    assert r.url == metrics_url
+async def test_server_not_running_api_request_legacy_status(app):
+    app.use_legacy_stopped_server_status_code = True
+    cookies = await app.login_user("bees")
+    r = await get_page("user/bees/api/status", app, hub=False, cookies=cookies)
+    assert r.status_code == 503
 
 
 async def test_health_check_request(app):
@@ -1087,7 +1203,7 @@ async def test_health_check_request(app):
 
 
 async def test_pre_spawn_start_exc_no_form(app):
-    exc = "pre_spawn_start error"
+    exc = "Unhandled error starting server"
 
     # throw exception from pre_spawn_start
     async def mock_pre_spawn_start(user, spawner):

jupyterhub/tests/test_roles.py

@@ -28,7 +28,7 @@ def test_orm_roles(db):
         user_role = orm.Role(name='user', scopes=['self'])
         db.add(user_role)
     if not token_role:
-        token_role = orm.Role(name='token', scopes=['all'])
+        token_role = orm.Role(name='token', scopes=['inherit'])
         db.add(token_role)
     if not service_role:
         service_role = orm.Role(name='service', scopes=[])
@@ -182,6 +182,7 @@ def test_orm_roles_delete_cascade(db):
                 'admin:users',
                 'admin:auth_state',
                 'users',
+                'delete:users',
                 'list:users',
                 'read:users',
                 'users:activity',
@@ -218,6 +219,7 @@ def test_orm_roles_delete_cascade(db):
             {
                 'admin:groups',
                 'groups',
+                'delete:groups',
                 'list:groups',
                 'read:groups',
                 'read:roles:groups',
@@ -229,6 +231,7 @@ def test_orm_roles_delete_cascade(db):
             {
                 'admin:groups',
                 'groups',
+                'delete:groups',
                 'list:groups',
                 'read:groups',
                 'read:roles:groups',
@@ -366,7 +369,7 @@ async def test_creating_roles(app, role, role_def, response_type, response):
             'info',
             app_log.info('Role user scopes attribute has been changed'),
         ),
-        ('non-existing', 'test-role2', 'error', NameError),
+        ('non-existing', 'test-role2', 'error', KeyError),
         ('default', 'user', 'error', ValueError),
     ],
 )
@@ -407,9 +410,9 @@ async def test_delete_roles(db, role_type, rolename, response_type, response):
             },
             'existing',
         ),
-        ({'name': 'test-scopes-2', 'scopes': ['uses']}, NameError),
-        ({'name': 'test-scopes-3', 'scopes': ['users:activities']}, NameError),
-        ({'name': 'test-scopes-4', 'scopes': ['groups!goup=class-A']}, NameError),
+        ({'name': 'test-scopes-2', 'scopes': ['uses']}, KeyError),
+        ({'name': 'test-scopes-3', 'scopes': ['users:activities']}, KeyError),
+        ({'name': 'test-scopes-4', 'scopes': ['groups!goup=class-A']}, KeyError),
     ],
 )
 async def test_scope_existence(tmpdir, request, role, response):
@@ -428,7 +431,7 @@ async def test_scope_existence(tmpdir, request, role, response):
         assert added_role is not None
         assert added_role.scopes == role['scopes']
 
-    elif response == NameError:
+    elif response == KeyError:
         with pytest.raises(response):
             roles.create_role(db, role)
         added_role = orm.Role.find(db, role['name'])
@@ -440,7 +443,14 @@ async def test_scope_existence(tmpdir, request, role, response):
 
 
 @mark.role
-async def test_load_roles_users(tmpdir, request):
+@mark.parametrize(
+    "explicit_allowed_users",
+    [
+        (True,),
+        (False,),
+    ],
+)
+async def test_load_roles_users(tmpdir, request, explicit_allowed_users):
     """Test loading predefined roles for users in app.py"""
     roles_to_load = [
         {
@@ -458,7 +468,8 @@ async def test_load_roles_users(tmpdir, request):
     hub.init_db()
     db = hub.db
     hub.authenticator.admin_users = ['admin']
-    hub.authenticator.allowed_users = ['cyclops', 'gandalf', 'bilbo', 'gargamel']
+    if explicit_allowed_users:
+        hub.authenticator.allowed_users = ['cyclops', 'gandalf', 'bilbo', 'gargamel']
     await hub.init_role_creation()
     await hub.init_users()
     await hub.init_role_assignment()
@@ -575,7 +586,7 @@ async def test_load_roles_groups(tmpdir, request):
             'name': 'head',
             'description': 'Whole user access',
             'scopes': ['users', 'admin:users'],
-            'groups': ['group3'],
+            'groups': ['group3', "group4"],
         },
     ]
     kwargs = {'load_groups': groups_to_load, 'load_roles': roles_to_load}
@@ -595,11 +606,13 @@ async def test_load_roles_groups(tmpdir, request):
     group1 = orm.Group.find(db, name='group1')
     group2 = orm.Group.find(db, name='group2')
     group3 = orm.Group.find(db, name='group3')
+    group4 = orm.Group.find(db, name='group4')
 
     # test group roles
     assert group1.roles == []
     assert group2 in assist_role.groups
     assert group3 in head_role.groups
+    assert group4 in head_role.groups
 
     # delete the test roles
     for role in roles_to_load:
@@ -658,11 +671,15 @@ async def test_load_roles_user_tokens(tmpdir, request):
     "headers, rolename, scopes, status",
     [
         # no role requested - gets default 'token' role
-        ({}, None, None, 200),
+        ({}, None, None, 201),
         # role scopes within the user's default 'user' role
-        ({}, 'self-reader', ['read:users'], 200),
+        ({}, 'self-reader', ['read:users!user'], 201),
+        # role scopes within the user's default 'user' role, but with disjoint filter
+        ({}, 'other-reader', ['read:users!user=other'], 403),
+        # role scopes within the user's default 'user' role, without filter
+        ({}, 'other-reader', ['read:users'], 403),
         # role scopes outside of the user's role but within the group's role scopes of which the user is a member
-        ({}, 'groups-reader', ['read:groups'], 200),
+        ({}, 'groups-reader', ['read:groups'], 201),
         # non-existing role request
         ({}, 'non-existing', [], 404),
         # role scopes outside of both user's role and group's role scopes
@@ -1178,14 +1195,47 @@ async def test_no_admin_role_change():
         await hub.init_role_creation()
 
 
-async def test_user_config_respects_memberships():
+@pytest.mark.parametrize(
+    "in_db, role_users, allowed_users, expected_members",
+    [
+        # users in the db, not specified in custom user role
+        # no change to membership
+        (["alpha", "beta"], None, None, ["alpha", "beta"]),
+        # allowed_users is additive, not strict
+        (["alpha", "beta"], None, {"gamma"}, ["alpha", "beta", "gamma"]),
+        # explicit empty revokes all assignments
+        (["alpha", "beta"], [], None, []),
+        # explicit value is respected exactly
+        (["alpha", "beta"], ["alpha", "gamma"], None, ["alpha", "gamma"]),
+    ],
+)
+async def test_user_role_from_config(
+    in_db, role_users, allowed_users, expected_members
+):
+    role_spec = {
+        'name': 'user',
+        'scopes': ['self', 'shutdown'],
+    }
+    if role_users is not None:
+        role_spec['users'] = role_users
+    hub = MockHub(load_roles=[role_spec])
+    hub.init_db()
+    db = hub.db
+    hub.authenticator.admin_users = set()
+    if allowed_users:
+        hub.authenticator.allowed_users = allowed_users
+    await hub.init_role_creation()
+
+
+async def test_user_config_creates_default_role():
     role_spec = [
         {
-            'name': 'user',
-            'scopes': ['self', 'shutdown'],
+            'name': 'new-role',
+            'scopes': ['read:users'],
+            'users': ['not-yet-created-user'],
         }
     ]
-    user_names = ['eddy', 'carol']
+    user_names = []
     hub = MockHub(load_roles=role_spec)
     hub.init_db()
     hub.authenticator.allowed_users = user_names
@@ -1193,9 +1243,9 @@ async def test_user_config_respects_memberships():
     await hub.init_users()
     await hub.init_role_assignment()
     user_role = orm.Role.find(hub.db, 'user')
-    for user_name in user_names:
-        user = orm.User.find(hub.db, user_name)
-        assert user in user_role.users
+    new_role = orm.Role.find(hub.db, 'new-role')
+    assert orm.User.find(hub.db, 'not-yet-created-user') in new_role.users
+    assert orm.User.find(hub.db, 'not-yet-created-user') in user_role.users
 
 
 async def test_admin_role_respects_config():
@@ -1217,16 +1267,45 @@ async def test_admin_role_respects_config():
         assert user in admin_role.users
 
 
-async def test_empty_admin_spec():
-    role_spec = [{'name': 'admin', 'users': []}]
-    hub = MockHub(load_roles=role_spec)
+@pytest.mark.parametrize(
+    "in_db, role_users, admin_users, expected_members",
+    [
+        # users in the db, not specified in custom user role
+        # no change to membership
+        (["alpha", "beta"], None, None, ["alpha", "beta"]),
+        # admin_users is additive, not strict
+        (["alpha", "beta"], None, {"gamma"}, ["alpha", "beta", "gamma"]),
+        # explicit empty revokes all assignments
+        (["alpha", "beta"], [], None, []),
+        # explicit value is respected exactly
+        (["alpha", "beta"], ["alpha", "gamma"], None, ["alpha", "gamma"]),
+    ],
+)
+async def test_admin_role_membership(in_db, role_users, admin_users, expected_members):
+
+    load_roles = []
+    if role_users is not None:
+        load_roles.append({"name": "admin", "users": role_users})
+    if not admin_users:
+        admin_users = set()
+    hub = MockHub(load_roles=load_roles, db_url="sqlite:///:memory:")
     hub.init_db()
-    hub.authenticator.admin_users = []
     await hub.init_role_creation()
+    db = hub.db
+    hub.authenticator.admin_users = admin_users
+    # add in_db users to the database
+    # this is the 'before' state of who had the role before startup
+    for username in in_db or []:
+        user = orm.User(name=username)
+        db.add(user)
+        db.commit()
+        roles.grant_role(db, user, "admin")
+    db.commit()
     await hub.init_users()
     await hub.init_role_assignment()
-    admin_role = orm.Role.find(hub.db, 'admin')
-    assert not admin_role.users
+    admin_role = orm.Role.find(db, 'admin')
+    role_members = sorted(user.name for user in admin_role.users)
+    assert role_members == expected_members
 
 
 async def test_no_default_service_role():
@@ -1327,3 +1406,20 @@ async def test_token_keep_roles_on_restart():
     for token in user.api_tokens:
         hub.db.delete(token)
     hub.db.commit()
+
+
+async def test_login_default_role(app, username):
+    cookies = await app.login_user(username)
+    user = app.users[username]
+    # assert login new user gets 'user' role
+    assert [role.name for role in user.roles] == ["user"]
+
+    # clear roles, keep user
+    user.roles = []
+    app.db.commit()
+
+    # login *again*; user exists,
+    # login should always trigger "user" role assignment
+    cookies = await app.login_user(username)
+    user = app.users[username]
+    assert [role.name for role in user.roles] == ["user"]

jupyterhub/tests/test_scopes.py

@@ -477,7 +477,7 @@ async def test_metascope_all_expansion(app, create_user_with_scopes):
     user = create_user_with_scopes('self')
     user.new_api_token()
     token = user.api_tokens[0]
-    # Check 'all' expansion
+    # Check 'inherit' expansion
     token_scope_set = get_scopes_for(token)
     user_scope_set = get_scopes_for(user)
     assert user_scope_set == token_scope_set
@@ -677,9 +677,14 @@ async def test_resolve_token_permissions(
     intersection_scopes,
 ):
     orm_user = create_user_with_scopes(*user_scopes).orm_user
+    # ensure user has full permissions when token is created
+    # to create tokens with permissions exceeding their owner
+    roles.grant_role(app.db, orm_user, "admin")
     create_temp_role(token_scopes, 'active-posting')
     api_token = orm_user.new_api_token(roles=['active-posting'])
     orm_api_token = orm.APIToken.find(app.db, token=api_token)
+    # drop admin so that filtering can be applied
+    roles.strip_role(app.db, orm_user, "admin")
 
     # get expanded !user filter scopes for check
     user_scopes = roles.expand_roles_to_scopes(orm_user)

jupyterhub/tests/test_services_auth.py

@@ -385,8 +385,8 @@ async def test_oauth_page_hit(
     hits_page,
 ):
     test_roles = {
-        'reader': create_temp_role(['read:users'], role_name='reader'),
-        'writer': create_temp_role(['users:activity'], role_name='writer'),
+        'reader': create_temp_role(['read:users!user'], role_name='reader'),
+        'writer': create_temp_role(['users:activity!user'], role_name='writer'),
     }
     service = mockservice_url
     user = create_user_with_scopes("access:services", "self")

jupyterhub/tests/test_singleuser.py

@@ -1,6 +1,10 @@
 """Tests for jupyterhub.singleuser"""
+import os
 import sys
+from contextlib import contextmanager
+from subprocess import CalledProcessError
 from subprocess import check_output
+from unittest import mock
 from urllib.parse import urlparse
 
 import pytest
@@ -14,6 +18,12 @@ from .utils import async_requests
 from .utils import AsyncSession
 
 
+@contextmanager
+def nullcontext():
+    """Python 3.7+ contextlib.nullcontext, backport for 3.6"""
+    yield
+
+
 @pytest.mark.parametrize(
     "access_scopes, server_name, expect_success",
     [
@@ -171,3 +181,47 @@ def test_version():
         [sys.executable, '-m', 'jupyterhub.singleuser', '--version']
     ).decode('utf8', 'replace')
     assert jupyterhub.__version__ in out
+
+
+@pytest.mark.parametrize(
+    "JUPYTERHUB_SINGLEUSER_APP",
+    [
+        "",
+        "notebook.notebookapp.NotebookApp",
+        "jupyter_server.serverapp.ServerApp",
+    ],
+)
+def test_singleuser_app_class(JUPYTERHUB_SINGLEUSER_APP):
+    try:
+        import jupyter_server  # noqa
+    except ImportError:
+        have_server = False
+        expect_error = "jupyter_server" in JUPYTERHUB_SINGLEUSER_APP
+    else:
+        have_server = True
+        expect_error = False
+
+    if expect_error:
+        ctx = pytest.raises(CalledProcessError)
+    else:
+        ctx = nullcontext()
+
+    with mock.patch.dict(
+        os.environ,
+        {
+            "JUPYTERHUB_SINGLEUSER_APP": JUPYTERHUB_SINGLEUSER_APP,
+        },
+    ):
+        with ctx:
+            out = check_output(
+                [sys.executable, '-m', 'jupyterhub.singleuser', '--help-all']
+            ).decode('utf8', 'replace')
+    if expect_error:
+        return
+    # use help-all output to check inheritance
+    if 'NotebookApp' in JUPYTERHUB_SINGLEUSER_APP or not have_server:
+        assert '--NotebookApp.' in out
+        assert '--ServerApp.' not in out
+    else:
+        assert '--ServerApp.' in out
+        assert '--NotebookApp.' not in out

jupyterhub/tests/test_spawner.py

@@ -21,6 +21,7 @@ from ..objects import Server
 from ..spawner import LocalProcessSpawner
 from ..spawner import Spawner
 from ..user import User
+from ..utils import AnyTimeoutError
 from ..utils import new_token
 from ..utils import url_path_join
 from .mocking import public_url
@@ -80,6 +81,18 @@ async def test_spawner(db, request):
     assert isinstance(status, int)
 
 
+def test_spawner_from_db(app, user):
+    spawner = user.spawners['name']
+    user_options = {"test": "value"}
+    spawner.orm_spawner.user_options = user_options
+    app.db.commit()
+    # delete and recreate the spawner from the db
+    user.spawners.pop('name')
+    new_spawner = user.spawners['name']
+    assert new_spawner.orm_spawner.user_options == user_options
+    assert new_spawner.user_options == user_options
+
+
 async def wait_for_spawner(spawner, timeout=10):
     """Wait for an http server to show up
 
@@ -95,7 +108,7 @@ async def wait_for_spawner(spawner, timeout=10):
         assert status is None
         try:
             await wait()
-        except TimeoutError:
+        except AnyTimeoutError:
             continue
         else:
             break
@@ -427,7 +440,22 @@ async def test_hub_connect_url(db):
     )
 
 
-async def test_spawner_oauth_roles(app):
-    allowed_roles = ['lotsa', 'roles']
-    spawner = new_spawner(app.db, oauth_roles=allowed_roles)
-    assert spawner.oauth_roles == allowed_roles
+async def test_spawner_oauth_roles(app, user):
+    allowed_roles = ["admin", "user"]
+    spawner = user.spawners['']
+    spawner.oauth_roles = allowed_roles
+    # exercise start/stop which assign roles to oauth client
+    await spawner.user.spawn()
+    oauth_client = spawner.orm_spawner.oauth_client
+    assert sorted(role.name for role in oauth_client.allowed_roles) == allowed_roles
+    await spawner.user.stop()
+
+
+async def test_spawner_oauth_roles_bad(app, user):
+    allowed_roles = ["user", "nosuchrole"]
+    spawner = user.spawners['']
+    spawner.oauth_roles = allowed_roles
+    # exercise start/stop which assign roles
+    # raises ValueError if we try to assign a role that doesn't exist
+    with pytest.raises(ValueError):
+        await spawner.user.spawn()

jupyterhub/tests/test_utils.py

@@ -2,12 +2,16 @@
 import asyncio
 import time
 from concurrent.futures import ThreadPoolExecutor
+from unittest.mock import Mock
 
 import pytest
 from async_generator import aclosing
 from tornado import gen
 from tornado.concurrent import run_on_executor
+from tornado.httpserver import HTTPRequest
+from tornado.httputil import HTTPHeaders
 
+from .. import utils
 from ..utils import iterate_until
 
 
@@ -88,3 +92,33 @@ async def test_tornado_coroutines():
     # verify that tornado gen and executor methods return awaitables
     assert (await t.on_executor()) == "executor"
     assert (await t.tornado_coroutine()) == "gen.coroutine"
+
+
+@pytest.mark.parametrize(
+    "forwarded, x_scheme, x_forwarded_proto, expected",
+    [
+        ("", "", "", "_attr_"),
+        ("for=1.2.3.4", "", "", "_attr_"),
+        ("for=1.2.3.4,proto=https", "", "", "_attr_"),
+        ("", "https", "http", "https"),
+        ("", "https, http", "", "https"),
+        ("", "https, http", "http", "https"),
+        ("proto=http ; for=1.2.3.4, proto=https", "https, http", "", "http"),
+        ("proto=invalid;for=1.2.3.4,proto=http", "https, http", "", "https"),
+        ("for=1.2.3.4,proto=http", "https, http", "", "https"),
+        ("", "invalid, http", "", "_attr_"),
+    ],
+)
+def test_browser_protocol(x_scheme, x_forwarded_proto, forwarded, expected):
+    request = Mock(spec=HTTPRequest)
+    request.protocol = "_attr_"
+    request.headers = HTTPHeaders()
+    if x_scheme:
+        request.headers["X-Scheme"] = x_scheme
+    if x_forwarded_proto:
+        request.headers["X-Forwarded-Proto"] = x_forwarded_proto
+    if forwarded:
+        request.headers["Forwarded"] = forwarded
+
+    proto = utils.get_browser_protocol(request)
+    assert proto == expected

jupyterhub/user.py

@@ -26,11 +26,41 @@ from .metrics import RUNNING_SERVERS
 from .metrics import TOTAL_USERS
 from .objects import Server
 from .spawner import LocalProcessSpawner
+from .utils import AnyTimeoutError
 from .utils import make_ssl_context
 from .utils import maybe_future
 from .utils import url_path_join
 
 
+# detailed messages about the most common failure-to-start errors,
+# which manifest timeouts during start
+start_timeout_message = """
+Common causes of this timeout, and debugging tips:
+
+1. Everything is working, but it took too long.
+   To fix: increase `Spawner.start_timeout` configuration
+   to a number of seconds that is enough for spawners to finish starting.
+2. The server didn't finish starting,
+   or it crashed due to a configuration issue.
+   Check the single-user server's logs for hints at what needs fixing.
+"""
+
+http_timeout_message = """
+Common causes of this timeout, and debugging tips:
+
+1. The server didn't finish starting,
+   or it crashed due to a configuration issue.
+   Check the single-user server's logs for hints at what needs fixing.
+2. The server started, but is not accessible at the specified URL.
+   This may be a configuration issue specific to your chosen Spawner.
+   Check the single-user server logs and resource to make sure the URL
+   is correct and accessible from the Hub.
+3. (unlikely) Everything is working, but the server took too long to respond.
+   To fix: increase `Spawner.http_timeout` configuration
+   to a number of seconds that is enough for servers to become responsive.
+"""
+
+
 class UserDict(dict):
     """Like defaultdict, but for users
 
@@ -84,7 +114,7 @@ class UserDict(dict):
                 if user.name == key:
                     key = user.id
                     break
-        return dict.__contains__(self, key)
+        return super().__contains__(key)
 
     def __getitem__(self, key):
         """UserDict allows retrieval of user by any of:
@@ -108,7 +138,7 @@ class UserDict(dict):
             if orm_user.id not in self:
                 user = self[orm_user.id] = User(orm_user, self.settings)
                 return user
-            user = dict.__getitem__(self, orm_user.id)
+            user = super().__getitem__(orm_user.id)
             user.db = self.db
             return user
         elif isinstance(key, int):
@@ -119,7 +149,7 @@ class UserDict(dict):
                     raise KeyError("No such user: %s" % id)
                 user = self.add(orm_user)
             else:
-                user = dict.__getitem__(self, id)
+                user = super().__getitem__(id)
             return user
         else:
             raise KeyError(repr(key))
@@ -145,7 +175,7 @@ class UserDict(dict):
                 self.db.expunge(orm_spawner)
         if user.orm_user in self.db:
             self.db.expunge(user.orm_user)
-        dict.__delitem__(self, user.id)
+        super().__delitem__(user.id)
 
     def delete(self, key):
         """Delete a user from the cache and the database"""
@@ -346,6 +376,7 @@ class User:
             oauth_client_id=client_id,
             cookie_options=self.settings.get('cookie_options', {}),
             trusted_alt_names=trusted_alt_names,
+            user_options=orm_spawner.user_options or {},
         )
 
         if self.settings.get('internal_ssl'):
@@ -592,6 +623,19 @@ class User:
             if callable(allowed_roles):
                 allowed_roles = allowed_roles(spawner)
 
+            # allowed_roles config is a list of strings
+            # oauth provider.allowed_roles is a list of orm.Roles
+            if allowed_roles:
+                allowed_role_names = allowed_roles
+                allowed_roles = list(
+                    self.db.query(orm.Role).filter(orm.Role.name.in_(allowed_roles))
+                )
+                if len(allowed_roles) != len(allowed_role_names):
+                    missing_roles = set(allowed_role_names).difference(
+                        {role.name for role in allowed_roles}
+                    )
+                    raise ValueError(f"No such role(s): {', '.join(missing_roles)}")
+
             oauth_client = oauth_provider.add_client(
                 client_id,
                 api_token,
@@ -707,11 +751,11 @@ class User:
                     db.commit()
 
         except Exception as e:
-            if isinstance(e, gen.TimeoutError):
+            if isinstance(e, AnyTimeoutError):
                 self.log.warning(
-                    "{user}'s server failed to start in {s} seconds, giving up".format(
-                        user=self.name, s=spawner.start_timeout
-                    )
+                    f"{self.name}'s server failed to start"
+                    f" in {spawner.start_timeout} seconds, giving up."
+                    f"\n{start_timeout_message}"
                 )
                 e.reason = 'timeout'
                 self.settings['statsd'].incr('spawner.failure.timeout')
@@ -764,14 +808,11 @@ class User:
                 http=True, timeout=spawner.http_timeout, ssl_context=ssl_context
             )
         except Exception as e:
-            if isinstance(e, TimeoutError):
+            if isinstance(e, AnyTimeoutError):
                 self.log.warning(
-                    "{user}'s server never showed up at {url} "
-                    "after {http_timeout} seconds. Giving up".format(
-                        user=self.name,
-                        url=server.url,
-                        http_timeout=spawner.http_timeout,
-                    )
+                    f"{self.name}'s server never showed up at {server.url}"
+                    f" after {spawner.http_timeout} seconds. Giving up."
+                    f"\n{http_timeout_message}"
                 )
                 e.reason = 'timeout'
                 self.settings['statsd'].incr('spawner.failure.http_timeout')

jupyterhub/utils.py

@@ -23,12 +23,12 @@ from operator import itemgetter
 
 from async_generator import aclosing
 from sqlalchemy.exc import SQLAlchemyError
+from tornado import gen
 from tornado import ioloop
 from tornado import web
 from tornado.httpclient import AsyncHTTPClient
 from tornado.httpclient import HTTPError
 from tornado.log import app_log
-from tornado.platform.asyncio import to_asyncio_future
 
 # For compatibility with python versions 3.6 or earlier.
 # asyncio.Task.all_tasks() is fully moved to asyncio.all_tasks() starting with 3.9. Also applies to current_task.
@@ -97,6 +97,10 @@ def make_ssl_context(keyfile, certfile, cafile=None, verify=True, check_hostname
     return ssl_context
 
 
+# AnyTimeoutError catches TimeoutErrors coming from asyncio, tornado, stdlib
+AnyTimeoutError = (gen.TimeoutError, asyncio.TimeoutError, TimeoutError)
+
+
 async def exponential_backoff(
     pass_func,
     fail_message,
@@ -182,7 +186,7 @@ async def exponential_backoff(
         if dt < max_wait:
             scale *= scale_factor
         await asyncio.sleep(dt)
-    raise TimeoutError(fail_message)
+    raise asyncio.TimeoutError(fail_message)
 
 
 async def wait_for_server(ip, port, timeout=10):
@@ -288,12 +292,39 @@ def authenticated_403(self):
         raise web.HTTPError(403)
 
 
+def admin_only(f):
+    """Deprecated!"""
+    # write it this way to trigger deprecation warning at decoration time,
+    # not on the method call
+    warnings.warn(
+        """@jupyterhub.utils.admin_only is deprecated in JupyterHub 2.0.
+
+        Use the new `@jupyterhub.scopes.needs_scope` decorator to resolve permissions,
+        or check against `self.current_user.parsed_scopes`.
+        """,
+        DeprecationWarning,
+        stacklevel=2,
+    )
+
+    # the original decorator
+    @auth_decorator
+    def admin_only(self):
+        """Decorator for restricting access to admin users"""
+        user = self.current_user
+        if user is None or not user.admin:
+            raise web.HTTPError(403)
+
+    return admin_only(f)
+
+
 @auth_decorator
 def metrics_authentication(self):
     """Decorator for restricting access to metrics"""
-    user = self.current_user
-    if user is None and self.authenticate_prometheus:
-        raise web.HTTPError(403)
+    if not self.authenticate_prometheus:
+        return
+    scope = 'read:metrics'
+    if scope not in self.parsed_scopes:
+        raise web.HTTPError(403, f"Access to metrics requires scope '{scope}'")
 
 
 # Token utilities
@@ -326,7 +357,7 @@ def hash_token(token, salt=8, rounds=16384, algorithm='sha512'):
         h.update(btoken)
     digest = h.hexdigest()
 
-    return "{algorithm}:{rounds}:{salt}:{digest}".format(**locals())
+    return f"{algorithm}:{rounds}:{salt}:{digest}"
 
 
 def compare_token(compare, token):
@@ -654,3 +685,44 @@ def catch_db_error(f):
             return r
 
     return catching
+
+
+def get_browser_protocol(request):
+    """Get the _protocol_ seen by the browser
+
+    Like tornado's _apply_xheaders,
+    but in the case of multiple proxy hops,
+    use the outermost value (what the browser likely sees)
+    instead of the innermost value,
+    which is the most trustworthy.
+
+    We care about what the browser sees,
+    not where the request actually came from,
+    so trusting possible spoofs is the right thing to do.
+    """
+    headers = request.headers
+    # first choice: Forwarded header
+    forwarded_header = headers.get("Forwarded")
+    if forwarded_header:
+        first_forwarded = forwarded_header.split(",", 1)[0].strip()
+        fields = {}
+        forwarded_dict = {}
+        for field in first_forwarded.split(";"):
+            key, _, value = field.partition("=")
+            fields[key.strip().lower()] = value.strip()
+        if "proto" in fields and fields["proto"].lower() in {"http", "https"}:
+            return fields["proto"].lower()
+        else:
+            app_log.warning(
+                f"Forwarded header present without protocol: {forwarded_header}"
+            )
+
+    # second choice: X-Scheme or X-Forwarded-Proto
+    proto_header = headers.get("X-Scheme", headers.get("X-Forwarded-Proto", None))
+    if proto_header:
+        proto_header = proto_header.split(",")[0].strip().lower()
+        if proto_header in {"http", "https"}:
+            return proto_header
+
+    # no forwarded headers
+    return request.protocol

pyproject.toml

@@ -5,3 +5,41 @@ target_version = [
     "py37",
     "py38",
 ]
+
+[tool.tbump]
+# Uncomment this if your project is hosted on GitHub:
+github_url = "https://github.com/jupyterhub/jupyterhub"
+
+[tool.tbump.version]
+current = "2.1.0"
+
+# Example of a semver regexp.
+# Make sure this matches current_version before
+# using tbump
+regex = '''
+  (?P<major>\d+)
+  \.
+  (?P<minor>\d+)
+  \.
+  (?P<patch>\d+)
+  (?P<pre>((a|b|rc)\d+)|)
+  \.?
+  (?P<dev>(?<=\.)dev\d*|)
+  '''
+
+[tool.tbump.git]
+message_template = "Bump to {new_version}"
+tag_template = "{new_version}"
+
+# For each file to patch, add a [[tool.tbump.file]] config
+# section containing the path of the file, relative to the
+# pyproject.toml location.
+
+[[tool.tbump.file]]
+src = "jupyterhub/_version.py"
+version_template = '({major}, {minor}, {patch}, "{pre}", "{dev}")'
+search = "version_info = {current_version}"
+
+[[tool.tbump.file]]
+src = "docs/source/_static/rest-api.yml"
+search = "version: {current_version}"

setup.py

@@ -46,10 +46,9 @@ def get_data_files():
     """Get data files in share/jupyter"""
 
     data_files = []
-    ntrim = len(here + os.path.sep)
-
     for (d, dirs, filenames) in os.walk(share_jupyterhub):
-        data_files.append((d[ntrim:], [pjoin(d, f) for f in filenames]))
+        rel_d = os.path.relpath(d, here)
+        data_files.append((rel_d, [os.path.join(rel_d, f) for f in filenames]))
     return data_files
 
 
@@ -100,6 +99,7 @@ setup_args = dict(
             'default = jupyterhub.auth:PAMAuthenticator',
             'pam = jupyterhub.auth:PAMAuthenticator',
             'dummy = jupyterhub.auth:DummyAuthenticator',
+            'null = jupyterhub.auth:NullAuthenticator',
         ],
         'jupyterhub.proxies': [
             'default = jupyterhub.proxy:ConfigurableHTTPProxy',
@@ -301,7 +301,7 @@ class develop_js_css(develop):
         if not self.uninstall:
             self.distribution.run_command('js')
             self.distribution.run_command('css')
-        develop.run(self)
+        super().run()
 
 
 setup_args['cmdclass']['develop'] = develop_js_css

share/jupyterhub/templates/admin.html

@@ -1,24 +1,10 @@
 {% extends "page.html" %}
 
-{% macro th(label, key='', colspan=1) %}
-<th data-sort="{{key}}" colspan="{{colspan}}">{{label}}
-  {% if key %}
-  <a href="#"><i class="fa {% if sort.get(key) == 'asc' -%}
-                               fa-sort-asc
-                           {%- elif sort.get(key) == 'desc' -%}
-                               fa-sort-desc
-                           {%- else -%}
-                               fa-sort
-                           {%- endif %} sort-icon">
-  </i></a>
-  {% endif %}
-</th>
-{% endmacro %}
-
 {% block main %}
 <div id="react-admin-hook">
   <script id="jupyterhub-admin-config">
     window.api_page_limit = parseInt("{{ api_page_limit|safe }}")
+    window.base_url = "{{ base_url|safe }}"
   </script>
   <script src="static/js/admin-react.js"></script>
 </div>

share/jupyterhub/templates/login.html

@@ -20,7 +20,7 @@
   </a>
 </div>
 {% else %}
-<form action="{{login_url}}?next={{next}}" method="post" role="form">
+<form action="{{authenticator_login_url}}" method="post" role="form">
   <div class="auth-form-header">
     Sign in
   </div>

share/jupyterhub/templates/not_running.html

@@ -18,8 +18,10 @@
       <p>
         {% if failed %}
         The latest attempt to start your server {{ server_name }} has failed.
-        {% if failed_message %}
-          {{ failed_message }}
+        {% if failed_html_message %}
+          </p><p>{{ failed_html_message | safe }}</p><p>
+        {% elif failed_message %}
+          </p><p>{{ failed_message }}</p><p>
         {% endif %}
         Would you like to retry starting it?
         {% else %}

singleuser/Dockerfile

@@ -6,7 +6,6 @@ FROM $BASE_IMAGE
 MAINTAINER Project Jupyter <jupyter@googlegroups.com>
 
 ADD install_jupyterhub /tmp/install_jupyterhub
-ARG JUPYTERHUB_VERSION=main
-# install pinned jupyterhub and ensure notebook is installed
-RUN python3 /tmp/install_jupyterhub && \
-    python3 -m pip install notebook
+ARG JUPYTERHUB_VERSION=git:HEAD
+# install pinned jupyterhub
+RUN python3 /tmp/install_jupyterhub

singleuser/hooks/build

@@ -1,4 +0,0 @@
-#!/bin/bash
-set -ex
-
-docker build --build-arg JUPYTERHUB_VERSION=$DOCKER_TAG -t $DOCKER_REPO:$DOCKER_TAG .

singleuser/hooks/post_push

@@ -1,21 +0,0 @@
-#!/bin/bash
-set -ex
-
-function get_hub_version() {
-  rm -f hub_version
-  V=$1
-  docker run --rm -v $PWD:/version -u $(id -u) -i $DOCKER_REPO:$DOCKER_TAG sh -c 'jupyterhub --version > /version/hub_version'
-  hub_xyz=$(cat hub_version)
-  split=( ${hub_xyz//./ } )
-  hub_xy="${split[0]}.${split[1]}"
-  # add .dev on hub_xy so it's 1.0.dev
-  if [[ ! -z "${split[3]:-}" ]]; then
-    hub_xy="${hub_xy}.${split[3]}"
-  fi
-}
-# tag e.g. 0.9 with main
-get_hub_version
-docker tag $DOCKER_REPO:$DOCKER_TAG $DOCKER_REPO:$hub_xy
-docker push $DOCKER_REPO:$hub_xy
-docker tag $DOCKER_REPO:$DOCKER_TAG $DOCKER_REPO:$hub_xyz
-docker push $DOCKER_REPO:$hub_xyz