How can I tell if ActionCable is running?

rubyonrails-talk
1

In my application, running ActionCable is an optional feature. I’m looking for suggestions on how to check if ActionCable is running or not. I could of course have an Environment Variable that is set, but I thought the code might be nicer if I had some sort of ActionCable.server.running? type check…

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Hi Eric. I don’t know ActionCable at all but I read this and I wanted to make sure I understand the question. Are you asking as to whether the gem for ActionCable is included and required?

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Thanks for following up. So what I want is to detect if ActionCable is configured and there is a server running… My app doesn’t REQUIRE ActionCable, it’s more of a nice add on if people want to enable it. ActionCable requires Redis, and if folks don’t have redis running, then I get:

15:17:54 web.1 | from /usr/local/bundle/gems/redis-4.4.0/lib/redis.rb:82:in without_reconnect’`

15:17:54 web.1 | from /usr/local/bundle/gems/actioncable-6.1.4.1/lib/action_cable/subscription_adapter/redis.rb:80:in listen’`

15:17:54 web.1 | from /usr/local/bundle/gems/actioncable-6.1.4.1/lib/action_cable/subscription_adapter/redis.rb:154:in block in ensure_listener_running’`

I’m looking some sort of simple “switch” to turn on/off the ActionCable capabilities.

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Where I have ended up is that I can catch some exceptions in various places if ActionCable is running ;-).

I thought maybe a check like ActionCable.server.nil? would do it, but that didn’t seem to be it. I’m going to check more later.

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