From 635d92fc5ded0faec71849554224608f0424fae2 Mon Sep 17 00:00:00 2001
From: Leif Johansson <leifj@sunet.se>
Date: Tue, 7 Feb 2012 13:36:54 +0100
Subject: refactor poll task

---
 src/meetingtools/ac/api.py          |  6 ++----
 src/meetingtools/apps/room/tasks.py | 15 +++++++++++++--
 src/meetingtools/apps/room/views.py |  3 ++-
 3 files changed, 17 insertions(+), 7 deletions(-)

(limited to 'src')

diff --git a/src/meetingtools/ac/api.py b/src/meetingtools/ac/api.py
index 0be2e6a..c17d500 100644
--- a/src/meetingtools/ac/api.py
+++ b/src/meetingtools/ac/api.py
@@ -192,9 +192,7 @@ class ACPClient():
         
         return (user_count,host_count)
     
-    def poll_user_counts(self,room,recheck=0):
+    def poll_user_counts(self,room):
         (room.user_count,room.host_count) = self.user_counts(room.sco_id)
         room.save()
-        if room.user_count > 0 or recheck > 0:
-            logging.debug("will recheck %d more times ..." % (recheck -1))
-            send_task('meetingtools.apps.room.tasks.poll_user_counts',[room],{'recheck': recheck-1},countdown=2)
\ No newline at end of file
+        return (room.user_count,room.host_count)
\ No newline at end of file
diff --git a/src/meetingtools/apps/room/tasks.py b/src/meetingtools/apps/room/tasks.py
index 25876eb..7bfc92a 100644
--- a/src/meetingtools/apps/room/tasks.py
+++ b/src/meetingtools/apps/room/tasks.py
@@ -17,6 +17,7 @@ import logging
 from datetime import datetime,timedelta
 from lxml import etree
 from django.db.models import Q
+import math
 
 def _owner_username(api,sco):
     logging.debug(sco)
@@ -131,11 +132,21 @@ def import_all_rooms():
     for acc in ACCluster.objects.all():
         _import_acc(acc)
   
+def start_user_counts_poll(room,niter):
+    poll_user_counts.apply_async(args=[room],kwargs={'niter': niter})
+  
 @task(name='meetingtools.apps.room.tasks.poll_user_counts',rate_limit="10/s")
-def poll_user_counts(room,recheck=0):
+def poll_user_counts(room,niter=0):
     logging.debug("rechecking user_counts for room %s" % room.name)
     api = ac_api_client_direct(room.acc)
-    api.poll_user_counts(room,recheck)
+    (nusers,nhosts) = api.poll_user_counts(room)
+    if nusers > 0:
+        logging.debug("room occupied by %d users and %d hosts, checking again in 20 ..." % (nusers,nhosts))
+        poll_user_counts.apply_async(args=[room],kwargs={'niter': 0},countdown=20)
+    elif niter > 0:
+        logging.debug("room empty, will check again in 5 for %d more times ..." % (niter -1))
+        poll_user_counts.apply_async(args=[room],kwargs={'niter': niter-1},countdown=5)
+    return (nusers,nhosts)
     
 # belts and suspenders - we setup polling for active rooms aswell...      
 @periodic_task(run_every=crontab(hour="*", minute="*/5", day_of_week="*"))
diff --git a/src/meetingtools/apps/room/views.py b/src/meetingtools/apps/room/views.py
index 8ba25c2..49d8481 100644
--- a/src/meetingtools/apps/room/views.py
+++ b/src/meetingtools/apps/room/views.py
@@ -32,6 +32,7 @@ from meetingtools.apps.cluster.models import acc_for_user
 from django.contrib.auth.models import User
 import iso8601
 from celery.execute import send_task
+from meetingtools.apps.room.tasks import start_user_counts_poll
 
 def _user_meeting_folder(request,acc):
     if not session(request,'my_meetings_sco_id'):
@@ -421,7 +422,7 @@ def _goto(request,room,clean=True,promote=False):
     
     r = api.request('sco-info',{'sco-id':room.sco_id},True)
     urlpath = r.et.findtext('.//sco/url-path')
-    api.poll_user_counts(room,recheck=5)
+    start_user_counts_poll(room,10)
     if key:
         try:
             user_client = ACPClient(room.acc.api_url, request.user.username, key, cache=False)
-- 
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