list_pending_transmisions does not use redis info from settings

[dreinhold]

[EricTendian]

@dreinhold which particular setting should it ideally use the redis info from? It looks like redis config is defined in a couple places. I'm working on making this application compatible w/ Docker, here's what I've got for this particular item: https://github.com/ScanOC/trunk-player/compare/master...CrimeIsDown:docker-compose#diff-4fbcae94d259598edab53050d48ecbefR8

[dreinhold]

I though I had prototyped this, but don't see the code.

The way you did it seems fine for now.

One thing is we can follow the channels setup (which by default is probably the best way for now)

from django.conf import settings

channel_redis_url = settings.CHANNEL_LAYERS['default']['CONFIG']['hosts'][0]
self.__db = redis.Redis.from_url(os.environ.get('REDIS_URL', channel_redis_url), **redis_kwargs)

[kcwebby]

Dylan -- Any way we could get this wrapped in so it functions? I'm trying to move away from SSH connections, and would like the recorder machine to add to a ElasticCache redis server, and then have the TP pick it up from there with the add_transmission_worker.

I am picking this issue up from where Rachael left it off, but unfortunately don't have the coding skills that she did.

[kcwebby]

Is it as simple as changing radio/utility.py ? https://github.com/ScanOC/trunk-player/blob/99137b085d7a9d17818155b17d891fb5595399fa/radio/utility.py#L5

redis.Redis(host='hostname',port=port,password='password') is the format expected, how do modify to pick that up from the config file, that part I don't know.

[kcwebby]

Update from my PR and a full day of testing... I've reached my limit on what I know, but I did explore a few options:

I have a configuration box setup, configured with the above pull request incorporated, and with local redis-server running it works fine (although, because its not pointed at the same redis server, the queue reloaded on the websocket is affected).

If you stop the redis-server on the webserver, and instead rely on the remote redis server, you get the 400 error with this exception.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/client.py", line 666, in execute_command
    connection.send_command(*args)
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 609, in send_command
    self.send_packed_command(self.pack_command(*args))
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 584, in send_packed_command
    self.connect()
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 488, in connect
    raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error 111 connecting to localhost:6379. Connection refused.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 483, in connect
    sock = self._connect()
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 540, in _connect
    raise err
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 528, in _connect
    sock.connect(socket_address)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/daphne/http_protocol.py", line 162, in process
    self.factory.channel_layer.send("http.request", {
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/asgi_redis/core.py", line 124, in send
    self.chansend(
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/client.py", line 2943, in __call__
    return client.evalsha(self.sha, len(keys), *args)
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/client.py", line 2078, in evalsha
    return self.execute_command('EVALSHA', sha, numkeys, *keys_and_args)
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/client.py", line 672, in execute_command
    connection.send_command(*args)
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 609, in send_command
    self.send_packed_command(self.pack_command(*args))
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 584, in send_packed_command
    self.connect()
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 488, in connect
    raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error 111 connecting to localhost:6379. Connection refused.

2020-10-06 20:12:50,014 Traceback (most recent call last):
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 483, in connect
    sock = self._connect()
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 540, in _connect
    raise err
  File "/home/ubuntu/trunk-player/env/lib/python3.8/site-packages/redis/connection.py", line 528, in _connect
    sock.connect(socket_address)
ConnectionRefusedError: [Errno 111] Connection refused

I attempted to locate / hard code for testing my redis server (on AWS) into the following locations with no change in behavior from the app:

~/trunk-player/env/lib/python3.8/site-packages/redis/client.py:488 ~/trunk-player/env/lib/python3.8/site-packages/redis/connection.py:437

I also attempted to change the redis channel, and cache "default" keys in ~/trunk-player/trunk_player/settings.py to default00, since it also points to localhost, and the server would not start, so I hardcoded that to my AWS instance as well, with no change.

Any help would be appreciated on this.