Class: AMQP::Header

Inherits:
Object
  • Object
show all
Defined in:
lib/amqp/header.rb

Overview

Message metadata (aka envelope).

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(channel, method, attributes) ⇒ Header

Returns a new instance of Header.



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# File 'lib/amqp/header.rb', line 27

def initialize(channel, method, attributes)
  @channel, @method, @attributes = channel, method, attributes
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(meth, *args, &blk) ⇒ Object

Returns AMQP message attributes.



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# File 'lib/amqp/header.rb', line 115

def method_missing(meth, *args, &blk)
  if @attributes && args.empty? && blk.nil? && @attributes.has_key?(meth)
    @attributes[meth]
  else
    @method.__send__(meth, *args, &blk)
  end
end

Instance Attribute Details

#attributes ⇒ Hash (readonly)

AMQP message attributes

Returns:

  • (Hash) 


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# File 'lib/amqp/header.rb', line 24

def attributes
  @attributes
end

#channel ⇒ AMQP::Channel (readonly)

Returns:



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# File 'lib/amqp/header.rb', line 13

def channel
  @channel
end

#method ⇒ AMQ::Protocol::Method (readonly)

AMQP method frame this header is associated with. Carries additional information that varies between AMQP methods.

Returns:

  • (AMQ::Protocol::Method) 


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# File 'lib/amqp/header.rb', line 20

def method
  @method
end

Instance Method Details

#ack(multiple = false) ⇒ Object

Acknowledges the receipt of this message with the server.

Parameters:

  • multiple (Boolean) (defaults to: false) —

    Whether or not to acknowledge multiple messages



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# File 'lib/amqp/header.rb', line 34

def ack(multiple = false)
  @channel.acknowledge(@method.delivery_tag, multiple)
end

#consumer_tag ⇒ Object

delivery_tag



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# File 'lib/amqp/header.rb', line 55

def consumer_tag
  @method.consumer_tag
end

#content_type ⇒ Object

delivery_mode



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# File 'lib/amqp/header.rb', line 84

def content_type
  @attributes[:content_type]
end

#correlation_id ⇒ Object

reply_to



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# File 'lib/amqp/header.rb', line 104

def correlation_id
  @attributes[:correlation_id]
end

#delivery_mode ⇒ Object

headers



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# File 'lib/amqp/header.rb', line 80

def delivery_mode
  @attributes[:delivery_mode]
end

#delivery_tag ⇒ Object

to_hash



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# File 'lib/amqp/header.rb', line 51

def delivery_tag
  @method.delivery_tag
end

#exchange ⇒ Object

redelivered?



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# File 'lib/amqp/header.rb', line 67

def exchange
  @method.exchange
end

#header ⇒ Object

Deprecated. 


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# File 'lib/amqp/header.rb', line 72

def header
  @attributes
end

#headers ⇒ Object

header



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# File 'lib/amqp/header.rb', line 76

def headers
  @attributes[:headers]
end

#message_id ⇒ Object

correlation_id



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# File 'lib/amqp/header.rb', line 108

def message_id
  @attributes[:message_id]
end

#priority ⇒ Object

type



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# File 'lib/amqp/header.rb', line 96

def priority
  @attributes[:priority]
end

#redelivered ⇒ Object

consumer_tag



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# File 'lib/amqp/header.rb', line 59

def redelivered
  @method.redelivered
end

#redelivered? ⇒ Boolean

redelivered

Returns:

  • (Boolean) 


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# File 'lib/amqp/header.rb', line 63

def redelivered?
  @method.redelivered
end

#reject(opts = {}) ⇒ Object

Reject this message.

Parameters:

  • opts (Hash) (defaults to: {}) —

    a customizable set of options

Options Hash (opts):

  • :requeue (Hash) — default: false —

    Whether message should be requeued.



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# File 'lib/amqp/header.rb', line 41

def reject(opts = {})
  @channel.reject(@method.delivery_tag, opts.fetch(:requeue, false))
end

#reply_to ⇒ Object

priority



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# File 'lib/amqp/header.rb', line 100

def reply_to
  @attributes[:reply_to]
end

#timestamp ⇒ Object

content_type



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# File 'lib/amqp/header.rb', line 88

def timestamp
  @attributes[:timestamp]
end

#to_hash ⇒ Hash

Returns AMQP message header w/o method-specific information.

Returns:

  • (Hash) —

    AMQP message header w/o method-specific information.



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# File 'lib/amqp/header.rb', line 47

def to_hash
  @attributes
end

#type ⇒ Object

timestamp



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# File 'lib/amqp/header.rb', line 92

def type
  @attributes[:type]
end