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module ActionCable
module Channel
module Redis
extend ActiveSupport::Concern
included do
on_unsubscribe :unsubscribe_from_redis_channels
delegate :pubsub, to: :connection
end
def subscribe_to(redis_channel, callback = nil)
callback ||= -> (message) { broadcast ActiveSupport::JSON.decode(message) }
@_redis_channels ||= []
@_redis_channels << [ redis_channel, callback ]
logger.info "[ActionCable] Subscribing to the redis channel: #{redis_channel}"
pubsub.subscribe(redis_channel, &callback)
end
protected
def unsubscribe_from_redis_channels
if @_redis_channels
@_redis_channels.each do |channel, callback|
logger.info "[ActionCable] Unsubscribing from the redis channel: #{channel}"
pubsub.unsubscribe_proc(channel, callback)
end
end
end
end
end
end
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