update tests for changed redirects

- handle 503 on not running /hub/user/:name
- handle new spawn-redirect page

jupyterhub/handlers/base.py

@@ -1220,7 +1220,7 @@ class UserUrlHandler(BaseHandler):
             self.log.warning(
                 "User %s requested server for %s, which they don't own",
                 current_user.name,
-                user.name,
+                user_name,
             )
             target = url_path_join(current_user.url, user_path or '')
             if self.request.query:
@@ -1270,13 +1270,10 @@ class UserUrlHandler(BaseHandler):
 
         # if request is expecting JSON, assume it's an API request and fail with 503
         # because it won't like the redirect to the pending page
-        if (
+        if get_accepted_mimetype(
-            get_accepted_mimetype(
             self.request.headers.get('Accept', ''),
             choices=['application/json', 'text/html'],
-            )
+        ) == 'application/json' or 'api' in user_path.split('/'):
-            == 'application/json'
-        ):
             self._fail_api_request()
             return
 
@@ -1376,9 +1373,14 @@ class UserRedirectHandler(BaseHandler):
     @web.authenticated
     def get(self, path):
         user = self.current_user
-        url = url_path_join(user.url, path)
+        user_url = url_path_join(user.url, path)
         if self.request.query:
-            url = url_concat(url, parse_qsl(self.request.query))
+            user_url = url_concat(user_url, parse_qsl(self.request.query))
+
+        url = url_concat(
+            url_path_join(self.hub.base_url, "spawn", user.name), {"next": user_url}
+        )
+
         self.redirect(url)
 
 

jupyterhub/handlers/pages.py

@@ -118,8 +118,8 @@ class SpawnHandler(BaseHandler):
                 raise web.HTTPError(404, "No such user: %s" % for_user)
 
         if not self.allow_named_servers and user.running:
-            url = user.server_url(server_name)
+            url = self.get_next_url(user, default=user.server_url(server_name))
-            self.log.debug("User is running: %s", url)
+            self.log.info("User is running: %s", user.name)
             self.redirect(url)
             return
 
@@ -127,10 +127,10 @@ class SpawnHandler(BaseHandler):
             server_name = ''
 
         spawner = user.spawners[server_name]
-        # resolve `?next=...`, falling back on the /hub/user/server url
+        # resolve `?next=...`, falling back on the spawn-pending url
-        # instead of /hub/home
         # must not be /user/server for named servers,
         # which may get handled by the default server if they aren't ready yet
+
         next_url = self.get_next_url(
             user,
             default=url_path_join(
@@ -139,19 +139,28 @@ class SpawnHandler(BaseHandler):
         )
 
         # spawner is active, redirect back to get progress, etc.
-        if spawner.active:
+        if spawner.ready:
+            self.log.info("Server %s is already running", spawner._log_name)
+            next_url = self.get_next_url(user, default=user.server_url(server_name))
+
+        elif spawner.active:
+            self.log.info("Server %s is already active", spawner._log_name)
             self.redirect(next_url)
             return
 
-        spawner_options_form = await spawner.get_options_form()
-        if spawner_options_form:
         # Add handler to spawner here so you can access query params in form rendering.
         spawner.handler = self
+        spawner_options_form = await spawner.get_options_form()
+        if spawner_options_form:
+            self.log.debug("Serving options form for %s", spawner._log_name)
             form = self._render_form(
                 for_user=user, spawner_options_form=spawner_options_form
             )
             self.finish(form)
         else:
+            self.log.debug(
+                "Triggering spawn with default options for %s", spawner._log_name
+            )
             # Explicit spawn request: clear _spawn_future
             # which may have been saved to prevent implicit spawns
             # after a failure.
@@ -210,11 +219,6 @@ class SpawnHandler(BaseHandler):
                 self.hub.base_url, "spawn-pending", user.name, server_name
             ),
         )
-
-        # request spawn and redirect immediately
-        # this will send folks to the
-        f = asyncio.ensure_future(self.spawn_single_user(user, server_name))
-        await asyncio.wait([f], timeout=1)
         self.redirect(next_url)
 
 

jupyterhub/tests/test_pages.py

@@ -44,9 +44,10 @@ async def test_root_redirect(app):
     next_url = ujoin(app.base_url, 'user/other/test.ipynb')
     url = '/?' + urlencode({'next': next_url})
     r = await get_page(url, app, cookies=cookies)
-    r.raise_for_status()
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, 'user/%s/test.ipynb' % name)
+    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
 
 
 async def test_root_default_url_noauth(app):
@@ -122,11 +123,19 @@ async def test_spawn_redirect(app):
     r.raise_for_status()
     print(urlparse(r.url))
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, 'user/%s/' % name)
+    # make sure we visited hub/spawn-pending after spawn
+    # if spawn was really quick, we might get redirected all the way to the running server,
+    # so check history instead of r.url
+    history = [urlparse(_.url).path for _ in r.history]
+    history.append(path)
+    assert ujoin(app.base_url, 'hub/spawn-pending', name) in history
 
     # should have started server
     status = await u.spawner.poll()
     assert status is None
+    # wait for ready signal before checking next redirect
+    while not u.spawner.ready:
+        await asyncio.sleep(0.1)
 
     # test spawn page when server is already running (just redirect)
     r = await get_page('spawn', app, cookies=cookies)
@@ -143,9 +152,9 @@ async def test_spawn_redirect(app):
 
     # test handing of trailing slash on `/user/name`
     r = await get_page('user/' + name, app, hub=False, cookies=cookies)
-    r.raise_for_status()
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, '/user/%s/' % name)
+    assert path == ujoin(app.base_url, 'hub/user/%s/' % name)
+    assert r.status_code == 503
 
 
 async def test_spawn_handler_access(app):
@@ -178,10 +187,11 @@ async def test_spawn_admin_access(app, admin_access):
     name = 'mariel'
     user = add_user(app.db, app=app, name=name)
     app.db.commit()
-    r = await get_page('user/' + name, app, cookies=cookies)
+    r = await get_page('spawn/' + name, app, cookies=cookies)
     r.raise_for_status()
     assert (r.url.split('?')[0] + '/').startswith(public_url(app, user))
     r = await get_page('user/{}/env'.format(name), app, hub=False, cookies=cookies)
+
     r.raise_for_status()
     env = r.json()
     assert env['JUPYTERHUB_USER'] == name
@@ -316,16 +326,16 @@ async def test_user_redirect_deprecated(app):
     cookies = await app.login_user(name)
 
     r = await get_page('/user/baduser', app, cookies=cookies, hub=False)
-    r.raise_for_status()
     print(urlparse(r.url))
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, '/user/%s/' % name)
+    assert path == ujoin(app.base_url, 'hub/user/%s/' % name)
+    assert r.status_code == 503
 
     r = await get_page('/user/baduser/test.ipynb', app, cookies=cookies, hub=False)
-    r.raise_for_status()
     print(urlparse(r.url))
     path = urlparse(r.url).path
-    assert path == ujoin(app.base_url, '/user/%s/test.ipynb' % name)
+    assert path == ujoin(app.base_url, 'hub/user/%s/test.ipynb' % name)
+    assert r.status_code == 503
 
     r = await get_page('/user/baduser/test.ipynb', app, hub=False)
     r.raise_for_status()
@@ -389,9 +399,11 @@ async def test_login_redirect(app, running, next_url, location):
     user = app.users['river']
     if location:
         location = ujoin(app.base_url, location)
+    elif running:
+        location = ujoin(app.base_url, 'user/river/')
     else:
         # use default url
-        location = user.url
+        location = ujoin(app.base_url, 'hub/spawn')
 
     url = 'login'
     if next_url:
@@ -575,6 +587,10 @@ async def test_announcements(app, announcements):
             assert ann01 in text
 
     cookies = await app.login_user("jones")
+    # make sure spawner isn't running
+    # so we see the spawn form
+    user = app.users["jones"]
+    await user.stop()
 
     with mock.patch.dict(
         app.tornado_settings,
@@ -650,6 +666,12 @@ async def test_token_page(app):
     r = await get_page("spawn", app, cookies=cookies)
     r.raise_for_status()
 
+    # wait for the server to be running and visit it
+    while not user.spawner.ready:
+        await asyncio.sleep(0.1)
+    r = await get_page("user/" + user.name, app, cookies=cookies)
+    r.raise_for_status()
+
     r = await get_page("token", app, cookies=cookies)
     r.raise_for_status()
     body = extract_body(r)
@@ -661,9 +683,11 @@ 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 == 404
+    assert r.status_code == 503
     assert r.headers["content-type"] == "application/json"
-    assert r.json() == {"message": "bees is not running"}
+    message = r.json()['message']
+    assert "Hub home page" in message
+    assert "/user/bees" in message
 
 
 async def test_metrics_no_auth(app):