[manual] Add endpoint to cleanup a finished events queue.

This requires a puppet apply on each of staging and prod0 to update
the nginx configuration to support the new URL when it is deployed.

(imported from commit a35a71a563fd1daca0d3ea4ec6874c5719a8564f)

puppet/zulip/files/nginx/zulip-include/app

@@ -14,7 +14,7 @@ location /static/ {
 }
 
 # Send longpoll requests to Tornado
-location ~ /json/get_events|/api/v1/events {
+location ~ /json/get_events|/json/events|/api/v1/events {
     proxy_pass       http://localhost:9993;
     proxy_redirect   off;
 

tools/run-dev.py

@@ -84,6 +84,7 @@ class Resource(resource.Resource):
         request.requestHeaders.setRawHeaders('X-Forwarded-Host', [proxy_host])
 
         if (request.uri in ['/json/get_events'] or
+            request.uri.startswith('/json/events') or
             request.uri.startswith('/api/v1/events') or
             request.uri.startswith('/sockjs')):
             return proxy.ReverseProxyResource('localhost', tornado_port, '/'+name)

zerver/lib/event_queue.py

@@ -141,6 +141,10 @@ class ClientDescriptor(object):
             ioloop.remove_timeout(self._timeout_handle)
             self._timeout_handle = None
 
+    def cleanup(self):
+        do_gc_event_queues([self.event_queue.id], [self.user_profile_id],
+                           [self.realm_id])
+
 class EventQueue(object):
     def __init__(self, id):
         self.queue = deque()
@@ -217,17 +221,7 @@ def allocate_client_descriptor(user_profile_id, realm_id, event_types, client_ty
         realm_clients_all_streams.setdefault(realm_id, []).append(client)
     return client
 
-def gc_event_queues():
+def do_gc_event_queues(to_remove, affected_users, affected_realms):
-    start = time.time()
-    to_remove = set()
-    affected_users = set()
-    affected_realms = set()
-    for (id, client) in clients.iteritems():
-        if client.idle(start):
-            to_remove.add(id)
-            affected_users.add(client.user_profile_id)
-            affected_realms.add(client.realm_id)
-
     def filter_client_dict(client_dict, key):
         if key not in client_dict:
             return
@@ -250,6 +244,19 @@ def gc_event_queues():
             cb(clients[id].user_profile_id, clients[id], clients[id].user_profile_id not in user_clients)
         del clients[id]
 
+def gc_event_queues():
+    start = time.time()
+    to_remove = set()
+    affected_users = set()
+    affected_realms = set()
+    for (id, client) in clients.iteritems():
+        if client.idle(start):
+            to_remove.add(id)
+            affected_users.add(client.user_profile_id)
+            affected_realms.add(client.realm_id)
+
+    do_gc_event_queues(to_remove, affected_users, affected_realms)
+
     logging.info(('Tornado removed %d idle event queues owned by %d users in %.3fs.'
                   + '  Now %d active queues')
                  % (len(to_remove), len(affected_users), time.time() - start,

zerver/management/commands/runtornado.py

@@ -88,6 +88,7 @@ class Command(BaseCommand):
             try:
                 urls = (r"/notify_tornado",
                         r"/json/get_events",
+                        r"/json/events",
                         r"/api/v1/events",
                         )
 
@@ -178,6 +179,9 @@ class AsyncDjangoHandler(tornado.web.RequestHandler, base.BaseHandler):
     def post(self):
         self.get()
 
+    def delete(self):
+        self.get()
+
     # Based on django.core.handlers.base: get_response
     def get_response(self, request):
         "Returns an HttpResponse object for the given HttpRequest"

zerver/tornadoviews.py

@@ -23,6 +23,17 @@ def notify(request):
     process_notification(ujson.loads(request.POST['data']))
     return json_success()
 
+@has_request_variables
+def cleanup_event_queue(request, user_profile, queue_id=REQ()):
+    client = get_client_descriptor(queue_id)
+    if client is None:
+        return json_error("Bad event queue id: %s" % (queue_id,))
+    if user_profile.id != client.user_profile_id:
+        return json_error("You are not authorized to access this queue")
+    request._log_data['extra'] = "[%s]" % (queue_id,)
+    client.cleanup()
+    return json_success()
+
 @authenticated_json_post_view
 def json_get_events(request, user_profile):
     return get_events_backend(request, user_profile, apply_markdown=True)

zproject/urls.py

@@ -219,7 +219,8 @@ v1_api_and_json_patterns = patterns('zerver.views',
 
 ) + patterns('zerver.tornadoviews',
     url(r'^events$', 'rest_dispatch',
-        {'GET': 'get_events_backend'}),
+        {'GET': 'get_events_backend',
+         'DELETE': 'cleanup_event_queue'}),
 )
 if not settings.ENTERPRISE:
     v1_api_and_json_patterns += patterns('',