class LogStash::Outputs::WebSocket::Pubsub

Attributes

logger[RW]

Public Class Methods

new() click to toggle source
# File lib/logstash/outputs/websocket_topics/pubsub.rb, line 8
def initialize
  @subscribers = []
  @subscribers_lock = Mutex.new
end

Public Instance Methods

publish(object) click to toggle source
# File lib/logstash/outputs/websocket_topics/pubsub.rb, line 13
def publish(object)
  @subscribers_lock.synchronize do
    break if @subscribers.size == 0

    failed = []
    @subscribers.each do |subscriber|
      begin
        subscriber.call(object)
      rescue => e
        @logger.error("Failed to publish to subscriber", :subscriber => subscriber, :exception => e)
        failed << subscriber
      end
    end

    failed.each do |subscriber|
      @subscribers.delete(subscriber)
    end
  end # @subscribers_lock.synchronize
end
subscribe(&block) click to toggle source
# File lib/logstash/outputs/websocket_topics/pubsub.rb, line 33
def subscribe(&block)
  queue = Queue.new
  @subscribers_lock.synchronize do
    @subscribers << proc do |event|
      queue << event
    end
  end

  while true
    block.call(queue.pop)
  end
end