Class: Warren::Message::Short

Inherits:
Object
  • Object
show all
Defined in:
lib/warren/message/short.rb

Overview

Light-weight interim message which can be expanded to a full payload later.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(record = nil, class_name: nil, id: nil) ⇒ Short

Create a ‘short’ message, where the payload is just the class name and id. Designed for when you wish to use a delayed broadcast.



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# File 'lib/warren/message/short.rb', line 21

def initialize(record = nil, class_name: nil, id: nil)
  if record
    @class_name = record.class.name
    @id = record.id
  else
    @class_name = class_name
    @id = id
  end
end

Instance Attribute Details

#record ⇒ Object (readonly)

Returns the value of attribute record.



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# File 'lib/warren/message/short.rb', line 13

def record
  @record
end

Instance Method Details

#headers ⇒ {}

For compatibility. Returns an empty hash.



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# File 'lib/warren/message/short.rb', line 62

def headers
  {}
end

#payload ⇒ String

The contents of the message, a string in the form:

“<ClassName>”,<id>


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# File 'lib/warren/message/short.rb', line 54

def payload
  [@class_name, @id].to_json
end

#queue(warren) ⇒ Object

Queues the message for broadcast at the end of the transaction. Actually want to make this the default behaviour, but only realised the need when doing some last minute integration tests. Will revisit this in the next version. (Or possibly post code review depending)



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# File 'lib/warren/message/short.rb', line 34

def queue(warren)
  after_commit { warren << self }
rescue NoMethodError
  raise StandardError, '#queue depends on the after_commit_everywhere gem. Please add this to your gemfile'
end

#routing_key ⇒ String

The routing key for the message.



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# File 'lib/warren/message/short.rb', line 44

def routing_key
  "queue_broadcast.#{@class_name.underscore}.#{@id}"
end