Class: Watcher

Inherits:
Object
  • Object
show all
Defined in:
lib/bender/watcher.rb

Direct Known Subclasses

GodUnmonitor, WatcherLifeCycleHook

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Watcher 



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# File 'lib/bender/watcher.rb', line 18

def initialize(options)
  @options = options
  load_queue
end

Class Method Details

.sqs ⇒ Object 



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# File 'lib/bender/watcher.rb', line 10

def self.sqs
  @@sqs ||= AWS::SQS.new({
    :access_key_id => ENV['AWS_ACCESS_KEY'],
    :secret_access_key => ENV['AWS_SECRET_ACCESS'],
    :region => ENV['AWS_REGION']
  })
end

Instance Method Details

#load_queue ⇒ Object 



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# File 'lib/bender/watcher.rb', line 27

def load_queue
  @queue ||= Watcher.sqs.queues.create(
    "#{Bender::Client.queue_prefix}-#{@options[:name]}",
    @options[:create_options]
  )
rescue Exception => ex
  Bender.logger.error("#{self.class}: #{ex.message}#{ex.backtrace.join("\n")}")
end

#publish(message) ⇒ Object 



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# File 'lib/bender/watcher.rb', line 47

def publish(message)
  message = message.to_json if message.is_a? Hash
  @queue.send_message(message)
rescue Exception => ex
  Bender.logger.error("#{self.class}: #{ex.message}#{ex.backtrace.join("\n")}")
end

#start ⇒ Object 



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# File 'lib/bender/watcher.rb', line 23

def start
  subscribe
end

#subscribe ⇒ Object 



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# File 'lib/bender/watcher.rb', line 36

def subscribe
  while Bender::Client.keep_running? do
    Bender.logger.info("Polling #{@queue.arn} for #{self.class.to_s}")
    @queue.poll(@options[:poll_options]) do |received_message|
      safe_perform(received_message.body)
    end
  end
rescue Exception => ex
  Bender.logger.error("#{self.class}: #{ex.message}#{ex.backtrace.join("\n")}")
end