Fixes for streamer (#35)

* Don't try to stop streamer if streamer id does not exists

* Always start BBBRoom before streamer

cosinnus_event/utils/bbb_streaming.py

@@ -34,12 +34,14 @@ def create_streamer_for_event(event):
             'event_id': event.id,
         })
         return
-    bbb_room = event.media_tag.bbb_room
-    if not bbb_room:
+    if not event.media_tag.bbb_room:
+        success = event.check_and_create_bbb_room()
+        if not success:
             logger.error('BBB Streaming: Could not create a streamer for event because no BBBRoom exists for it!', extra={
                 'event_id': event.id,
             })
             return
+    bbb_room = event.media_tag.bbb_room
     stream_url = event.stream_url.strip()
     if not stream_url.endswith('/'):
         stream_url += '/'
@@ -74,6 +76,7 @@ def start_streamer_for_event(event):
             'event_id': event.id,
         })
         return
+    event.check_and_create_bbb_room()
     ret = start_streamer(event.settings.get(SETTINGS_STREAMER_ID))
     if ret is True:
         event.settings[SETTINGS_STREAMER_RUNNING] = True
@@ -164,6 +167,7 @@ def trigger_streamer_status_changes(events=None):
         # events which have streamer settings still will be stopped/deleted *even if* their `enable_streaming`
         # is set to false, so we can stop streams that have just had their streaming disabled but are still running
         if event.settings.get(SETTINGS_STREAMER_RUNNING, None) and \
+                event.settings.get(SETTINGS_STREAMER_ID, None) and \
                 (event.enable_streaming == False or not event.streaming_allowed or stop_delete_time <= now() or now() <= start_time):
             try:
                 stop_streamer_for_event(event)