Class: Howler::Queue

Inherits:
Object
  • Object
show all
Defined in:
lib/howler/queue.rb

Constant Summary collapse

INDEX = 
"queues"
DEFAULT = 
"default"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(identifier = DEFAULT) ⇒ Queue

Returns a new instance of Queue.



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# File 'lib/howler/queue.rb', line 8

def initialize(identifier = DEFAULT)
  @id = identifier
  @name = "queues:" + identifier
  @logger = Howler::Logger.new

  after_initialize
end

Instance Attribute Details

#created_at ⇒ Object (readonly)

Returns the value of attribute created_at.



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# File 'lib/howler/queue.rb', line 6

def created_at
  @created_at
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/howler/queue.rb', line 6

def id
  @id
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/howler/queue.rb', line 6

def name
  @name
end

Class Method Details

.notifications ⇒ Object 



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# File 'lib/howler/queue.rb', line 83

def self.notifications
  Howler.redis.with {|redis| redis.lrange("notifications", 0, 100) }.collect do |message|
    MultiJson.decode(message)
  end
end

Instance Method Details

#error ⇒ Object 



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# File 'lib/howler/queue.rb', line 93

def error
  Howler.redis.with {|redis| redis.hget(name, "error") }.to_i
end

#failed_messages ⇒ Object 



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# File 'lib/howler/queue.rb', line 77

def failed_messages
  Howler.redis.with {|redis| redis.zrange("#{name}:messages:failed", 0, 100) }.collect do |message|
    MultiJson.decode(message)
  end
end

#immediate(message) ⇒ Object 



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# File 'lib/howler/queue.rb', line 22

def immediate(message)
  Howler::Worker.new.perform(message, self)
end

#pending_messages ⇒ Object 



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# File 'lib/howler/queue.rb', line 65

def pending_messages
  Howler.redis.with {|redis| redis.zrange(Howler::Manager::DEFAULT, 0, 100) }.collect do |message|
    MultiJson.decode(message)
  end
end

#processed_messages ⇒ Object 



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# File 'lib/howler/queue.rb', line 71

def processed_messages
  Howler.redis.with {|redis| redis.zrange("#{name}:messages", 0, 100) }.collect do |message|
    MultiJson.decode(message)
  end
end

#push(message, time = Time.now) ⇒ Object 



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# File 'lib/howler/queue.rb', line 16

def push(message, time = Time.now)
  message = MultiJson.encode(message)

  Howler.redis.with {|redis| redis.zadd(Howler::Manager::DEFAULT, time.to_f, message) } != 0
end

#statistics(klass = nil, method = nil, args = nil, created_at = nil, &block) ⇒ Object 



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# File 'lib/howler/queue.rb', line 26

def statistics(klass = nil, method = nil, args = nil, created_at = nil, &block)
  Howler.redis.with {|redis| redis.hincrby(name, klass.to_s, 1) } if klass
  Howler.redis.with {|redis| redis.hincrby(name, "#{klass}:#{method}", 1) } if method

  metadata = {
    :class => klass.to_s,
    :method => method,
    :args => args,
    :time => {},
    :created_at => created_at,
    :status => 'success'
  }

  @logger.log do |log|
    begin
      time = Benchmark.measure do
        block.call
      end
      metadata.merge!(:time => parse_time(time))
      Howler.redis.with {|redis| redis.hincrby(name, "success", 1) }
    rescue Howler::Message::Retry => e
      log.debug("Howler::Message::Retry - #{klass}.new.#{method}(#{Howler.args(args)})")
      requeue(metadata, e)
    rescue Howler::Message::Failed => e
      log.debug("Howler::Message::Failed - #{klass}.new.#{method}(#{Howler.args(args)})")
      failed(metadata, e)
    rescue Howler::Message::Notify => e
      log.debug("Howler::Message::Notify - #{klass}.new.#{method}(#{Howler.args(args)})")
      notify(metadata, e)
    rescue Exception => e
      log.debug("#{e.to_s} - #{klass}.new.#{method}(#{Howler.args(args)})")
      metadata[:status] = 'error'
      Howler.redis.with {|redis| redis.hincrby(name, "error", 1) }
    end
  end

  Howler.redis.with {|redis| redis.zadd("#{name}:messages", Time.now.to_f, MultiJson.encode(metadata)) } if %w(success error).include?(metadata[:status])
end

#success ⇒ Object 



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# File 'lib/howler/queue.rb', line 89

def success
  Howler.redis.with {|redis| redis.hget(name, "success") }.to_i
end