Class: RackRabbit::Message

Inherits:
Object
  • Object
show all
Defined in:
lib/rack-rabbit/message.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(delivery_tag, properties, body, rabbit) ⇒ Message

Returns a new instance of Message.



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# File 'lib/rack-rabbit/message.rb', line 14

def initialize(delivery_tag, properties, body, rabbit)
  @delivery_tag       = delivery_tag
  @reply_to           = properties.reply_to
  @correlation_id     = properties.correlation_id
  @body               = body
  @headers            = properties.headers || {}
  @method             = headers.delete(RackRabbit::HEADER::METHOD) || :GET
  @uri                = headers.delete(RackRabbit::HEADER::PATH)   || ""
  @status             = headers.delete(RackRabbit::HEADER::STATUS)
  @path, @query       = uri.split(/\?/)
  @content_type       = properties.content_type
  @content_encoding   = properties.content_encoding
  @content_length     = body.nil? ? 0 : body.length
  @rabbit             = rabbit
  @acknowledged       = nil
  @rejected           = nil
end

Instance Attribute Details

#body ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def body
  @body
end

#content_encoding ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def content_encoding
  @content_encoding
end

#content_length ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def content_length
  @content_length
end

#content_type ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def content_type
  @content_type
end

#correlation_id ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def correlation_id
  @correlation_id
end

#delivery_tag ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def delivery_tag
  @delivery_tag
end

#headers ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def headers
  @headers
end

#method ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def method
  @method
end

#path ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def path
  @path
end

#query ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def query
  @query
end

#rabbit ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def rabbit
  @rabbit
end

#reply_to ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def reply_to
  @reply_to
end

#status ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def status
  @status
end

#uri ⇒ Object (readonly) 



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# File 'lib/rack-rabbit/message.rb', line 8

def uri
  @uri
end

Instance Method Details

#ack ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/rack-rabbit/message.rb', line 69

def ack
  raise RuntimeError, "already acknowledged" if acknowledged?
  raise RuntimeError, "already rejected"     if rejected?
  @acknowledged = true
  rabbit.ack(delivery_tag)
end

#acknowledged? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack-rabbit/message.rb', line 83

def acknowledged?
  @acknowledged == true
end

#get_rack_env(defaults = {}) ⇒ Object 



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# File 'lib/rack-rabbit/message.rb', line 34

def get_rack_env(defaults = {})

  defaults.merge({
    'rabbit.message' => self,
    'rack.input'     => StringIO.new(body || ""),
    'REQUEST_METHOD' => method,
    'REQUEST_PATH'   => uri,
    'PATH_INFO'      => path,
    'QUERY_STRING'   => query,
    'CONTENT_TYPE'   => "#{content_type || 'text/plain'}; charset=\"#{content_encoding || 'utf-8'}\"",
    'CONTENT_LENGTH' => content_length
  }).merge(headers)

end

#get_reply_properties(response, config) ⇒ Object 



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# File 'lib/rack-rabbit/message.rb', line 55

def get_reply_properties(response, config)
  return {
    :app_id           => config.app_id,
    :routing_key      => reply_to,
    :correlation_id   => correlation_id,
    :timestamp        => Time.now.to_i,
    :headers          => response.headers.merge(RackRabbit::HEADER::STATUS => response.status),
    :content_type     => response.headers[RackRabbit::HEADER::CONTENT_TYPE],
    :content_encoding => response.headers[RackRabbit::HEADER::CONTENT_ENCODING]
  }
end

#reject ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/rack-rabbit/message.rb', line 76

def reject
  raise RuntimeError, "already acknowledged" if acknowledged?
  raise RuntimeError, "already rejected"     if rejected?
  @rejected = true
  rabbit.reject(delivery_tag)
end

#rejected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack-rabbit/message.rb', line 87

def rejected?
  @rejected == true
end

#should_reply? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack-rabbit/message.rb', line 51

def should_reply?
  !reply_to.nil?
end