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More robust mechanism for websocket message send section locking

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This commit is contained in:
Fabio Manganiello 2020-02-06 19:30:40 +01:00
parent ca030c9b25
commit c5adc141ea
1 changed files with 12 additions and 6 deletions
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18
platypush/backend/http/__init__.py
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@ -225,12 +225,18 @@ class HttpBackend(Backend):
raise TimeoutError('Websocket on address {} not ready to receive data'.format(addr)) raise TimeoutError('Websocket on address {} not ready to receive data'.format(addr))
def _release_websocket_lock(self, ws): def _release_websocket_lock(self, ws):
addr = ws.local_address try:
if addr in self._websocket_locks: acquire_ok = self._websocket_lock.acquire(timeout=self._websocket_lock_timeout)
try: if not acquire_ok:
raise TimeoutError('Websocket lock acquire timeout')
addr = ws.remote_address
if addr in self._websocket_locks:
self._websocket_locks[addr].release() self._websocket_locks[addr].release()
except RuntimeError: except Exception as e:
pass self.logger.warning('Unhandled exception while releasing websocket lock: {}'.format(str(e)))
finally:
self._websocket_lock.release()
def notify_web_clients(self, event): def notify_web_clients(self, event):
""" Notify all the connected web clients (over websocket) of a new event """ """ Notify all the connected web clients (over websocket) of a new event """
@ -246,8 +252,8 @@ class HttpBackend(Backend):
self._release_websocket_lock(ws) self._release_websocket_lock(ws)
loop = get_or_create_event_loop() loop = get_or_create_event_loop()
wss = self.active_websockets.copy() wss = self.active_websockets.copy()
for _ws in wss: for _ws in wss:
try: try:
loop.run_until_complete(send_event(_ws)) loop.run_until_complete(send_event(_ws))