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add —cull-users to cull_idle_servers

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allows deleting idle users in addition to servers for temp-user cases such as binder/tmpnb
This commit is contained in:
Min RK
2017-08-30 10:31:44 +02:00
parent f91e911d1a
commit f9a90d2494
1 changed files with 36 additions and 9 deletions
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45
examples/cull-idle/cull_idle_servers.py
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@@ -40,8 +40,11 @@ from tornado.options import define, options, parse_command_line
@coroutine
def cull_idle(url, api_token, timeout):
"""cull idle single-user servers"""
def cull_idle(url, api_token, timeout, cull_users=False):
"""Shutdown idle single-user servers
If cull_users, inactive *users* will be deleted as well.
"""
auth_header = {
'Authorization': 'token %s' % api_token
}
@@ -54,26 +57,50 @@ def cull_idle(url, api_token, timeout):
resp = yield client.fetch(req)
users = json.loads(resp.body.decode('utf8', 'replace'))
futures = []
for user in users:
last_activity = parse_date(user['last_activity'])
if user['server'] and last_activity < cull_limit:
app_log.info("Culling %s (inactive since %s)", user['name'], last_activity)
@coroutine
def cull_one(user, last_activity):
"""cull one user"""
# shutdown server first. Hub doesn't allow deleting users with running servers.
if user['server']:
app_log.info("Culling server for %s (inactive since %s)", user['name'], last_activity)
req = HTTPRequest(url=url + '/users/%s/server' % user['name'],
method='DELETE',
headers=auth_header,
)
futures.append((user['name'], client.fetch(req)))
elif user['server'] and last_activity > cull_limit:
yield client.fetch(req)
if cull_users:
app_log.info("Culling user %s (inactive since %s)", user['name'], last_activity)
req = HTTPRequest(url=url + '/users/%s' % user['name'],
method='DELETE',
headers=auth_header,
)
yield client.fetch(req)
for user in users:
if not user['server'] and not cull_users:
# server not running and not culling users, nothing to do
continue
last_activity = parse_date(user['last_activity'])
if last_activity < cull_limit:
futures.append((user['name'], cull_one(user, last_activity)))
else:
app_log.debug("Not culling %s (active since %s)", user['name'], last_activity)
for (name, f) in futures:
yield f
app_log.debug("Finished culling %s", name)
if __name__ == '__main__':
define('url', default=os.environ.get('JUPYTERHUB_API_URL'), help="The JupyterHub API URL")
define('timeout', default=600, help="The idle timeout (in seconds)")
define('cull_every', default=0, help="The interval (in seconds) for checking for idle servers to cull")
define('cull_users', default=False,
help="""Cull users in addition to servers.
This is for use in temporary-user cases such as tmpnb.""",
)
parse_command_line()
if not options.cull_every:
@@ -82,7 +109,7 @@ if __name__ == '__main__':
api_token = os.environ['JUPYTERHUB_API_TOKEN']
loop = IOLoop.current()
cull = lambda : cull_idle(options.url, api_token, options.timeout)
cull = lambda : cull_idle(options.url, api_token, options.timeout, options.cull_users)
# run once before scheduling periodic call
loop.run_sync(cull)
# schedule periodic cull