Improve asyncio debugging (#15398)

- use asyncio.get_running_loop() instead of passing around event_loops
- add name to all of the asyncio tasks for easier debugging

we are trying to figure out which task is
```
Task was destroyed but it is pending!
task: <Task pending name='Task-<id>' coro=<RedisConnection._read_data() done, defined at /var/lib/awx/venv/awx/lib64/python3.9/site-packages/aioredis/connection.py:180> wait_for=<Future pending cb=[<TaskWakeupMethWrapper object at 0x7fba77bf1700>()]> cb=[RedisConnection.__init__.<locals>.<lambda>() at /var/lib/awx/venv/awx/lib64/python3.9/site-packages/aioredis/connection.py:168]>
```
is referring to

awx/main/analytics/broadcast_websocket.py

@@ -66,10 +66,8 @@ class FixedSlidingWindow:
 
 
 class RelayWebsocketStatsManager:
-    def __init__(self, event_loop, local_hostname):
+    def __init__(self, local_hostname):
         self._local_hostname = local_hostname
-
-        self._event_loop = event_loop
         self._stats = dict()
         self._redis_key = BROADCAST_WEBSOCKET_REDIS_KEY_NAME
 
@@ -94,7 +92,10 @@ class RelayWebsocketStatsManager:
             self.start()
 
     def start(self):
-        self.async_task = self._event_loop.create_task(self.run_loop())
+        self.async_task = asyncio.get_running_loop().create_task(
+            self.run_loop(),
+            name='RelayWebsocketStatsManager.run_loop',
+        )
         return self.async_task
 
     @classmethod

awx/main/wsrelay.py

@@ -47,7 +47,6 @@ class WebsocketRelayConnection:
         verify_ssl: bool = settings.BROADCAST_WEBSOCKET_VERIFY_CERT,
     ):
         self.name = name
-        self.event_loop = asyncio.get_event_loop()
         self.stats = stats
         self.remote_host = remote_host
         self.remote_port = remote_port
@@ -110,7 +109,10 @@ class WebsocketRelayConnection:
             self.stats.record_connection_lost()
 
     def start(self):
-        self.async_task = self.event_loop.create_task(self.connect())
+        self.async_task = asyncio.get_running_loop().create_task(
+            self.connect(),
+            name=f"WebsocketRelayConnection.connect.{self.name}",
+        )
         return self.async_task
 
     def cancel(self):
@@ -121,7 +123,10 @@ class WebsocketRelayConnection:
         # metrics messages
         # the "metrics" group is not subscribed to in the typical fashion, so we
         # just explicitly create it
-        producer = self.event_loop.create_task(self.run_producer("metrics", websocket, "metrics"))
+        producer = asyncio.get_running_loop().create_task(
+            self.run_producer("metrics", websocket, "metrics"),
+            name="WebsocketRelayConnection.run_producer.metrics",
+        )
         self.producers["metrics"] = {"task": producer, "subscriptions": {"metrics"}}
         async for msg in websocket:
             self.stats.record_message_received()
@@ -143,7 +148,10 @@ class WebsocketRelayConnection:
                     name = f"{self.remote_host}-{group}"
                     origin_channel = payload['origin_channel']
                     if not self.producers.get(name):
-                        producer = self.event_loop.create_task(self.run_producer(name, websocket, group))
+                        producer = asyncio.get_running_loop().create_task(
+                            self.run_producer(name, websocket, group),
+                            name=f"WebsocketRelayConnection.run_producer.{name}",
+                        )
                         self.producers[name] = {"task": producer, "subscriptions": {origin_channel}}
                         logger.debug(f"Producer {name} started.")
                     else:
@@ -297,9 +305,7 @@ class WebSocketRelayManager(object):
             pass
 
     async def run(self):
-        event_loop = asyncio.get_running_loop()
+        self.stats_mgr = RelayWebsocketStatsManager(self.local_hostname)
-
-        self.stats_mgr = RelayWebsocketStatsManager(event_loop, self.local_hostname)
         self.stats_mgr.start()
 
         database_conf = deepcopy(settings.DATABASES['default'])
@@ -323,7 +329,10 @@ class WebSocketRelayManager(object):
         )
 
         await async_conn.set_autocommit(True)
-        on_ws_heartbeat_task = event_loop.create_task(self.on_ws_heartbeat(async_conn))
+        on_ws_heartbeat_task = asyncio.get_running_loop().create_task(
+            self.on_ws_heartbeat(async_conn),
+            name="WebSocketRelayManager.on_ws_heartbeat",
+        )
 
         # Establishes a websocket connection to /websocket/relay on all API servers
         while True: