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require 'thread'
gem 'em-hiredis', '~> 0.3.0'
gem 'redis', '~> 3.0'
require 'em-hiredis'
require 'redis'
EventMachine.epoll if EventMachine.epoll?
EventMachine.kqueue if EventMachine.kqueue?
module ActionCable
module SubscriptionAdapter
class Redis < Base # :nodoc:
@@mutex = Mutex.new
def broadcast(channel, payload)
redis_connection_for_broadcasts.publish(channel, payload)
end
def subscribe(channel, message_callback, success_callback = nil)
redis_connection_for_subscriptions.pubsub.subscribe(channel, &message_callback).tap do |result|
result.callback { |reply| success_callback.call } if success_callback
end
end
def unsubscribe(channel, message_callback)
redis_connection_for_subscriptions.pubsub.unsubscribe_proc(channel, message_callback)
end
def shutdown
redis_connection_for_subscriptions.pubsub.close_connection
@redis_connection_for_subscriptions = nil
end
private
def redis_connection_for_subscriptions
ensure_reactor_running
@redis_connection_for_subscriptions ||= EM::Hiredis.connect(@server.config.cable[:url]).tap do |redis|
redis.on(:reconnect_failed) do
@logger.info "[ActionCable] Redis reconnect failed."
end
end
end
def redis_connection_for_broadcasts
@redis_connection_for_broadcasts ||= ::Redis.new(@server.config.cable)
end
def ensure_reactor_running
return if EventMachine.reactor_running?
@@mutex.synchronize do
Thread.new { EventMachine.run } unless EventMachine.reactor_running?
Thread.pass until EventMachine.reactor_running?
end
end
end
end
end
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