Class: Droonga::HandlerMessenger

Inherits:
Object
  • Object
show all
Defined in:
lib/droonga/handler_messenger.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(forwarder, message, options = {}) ⇒ HandlerMessenger

Returns a new instance of HandlerMessenger.



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# File 'lib/droonga/handler_messenger.rb', line 23

def initialize(forwarder, message, options={})
  @forwarder = forwarder
  @message = message
  @options = options
  @replier = Replier.new(@forwarder)
  @dispatcher = options[:dispatcher]
  @engine_state = options[:engine_state]
  @database_name = options[:database]
end

Instance Attribute Details

#database_name ⇒ Object (readonly)

Returns the value of attribute database_name.



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# File 'lib/droonga/handler_messenger.rb', line 21

def database_name
  @database_name
end

#dispatcher ⇒ Object (readonly)

Returns the value of attribute dispatcher.



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# File 'lib/droonga/handler_messenger.rb', line 21

def dispatcher
  @dispatcher
end

#engine_state ⇒ Object (readonly)

Returns the value of attribute engine_state.



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# File 'lib/droonga/handler_messenger.rb', line 21

def engine_state
  @engine_state
end

Instance Method Details

#emit(value) ⇒ Object 



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# File 'lib/droonga/handler_messenger.rb', line 33

def emit(value)
  descendants = @message.descendants
  raw_message = @message.raw
  if descendants.empty?
    return if raw_message["replyTo"].nil?
    @replier.reply(raw_message.merge("body" => value))
  else
    descendants.each do |name, dests|
      body = {
        "id"    => @message.id,
        "input" => name,
        "value" => value[name],
      }
      dests.each do |dest|
        if @dispatcher
          @dispatcher.dispatch(body, dest)
        else
          message = raw_message.merge("body" => body)
          forward(message, "to" => dest, "type" => "dispatcher")
        end
      end
    end
  end
end

#error(status_code, body) ⇒ Object 



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# File 'lib/droonga/handler_messenger.rb', line 58

def error(status_code, body)
  descendants = @message.descendants
  raw_message = @message.raw
  if descendants.empty?
    return if raw_message["replyTo"].nil?
    response = raw_message.merge("statusCode" => status_code,
                                 "body" => body)
    @replier.reply(response)
  else
    #XXX This is just a temporary solution. We should rewrite this,
    #    to put errors outside of the message body. Otherwise
    #    plugins cannot use the name "errors" for their message body.
    body = {
      "id"    => @message.id,
      "input" => "errors",
      "value" => {
        database_name => {
          "statusCode" => status_code,
          "body" => body,
        },
      },
    }
    all_dests = []
    descendants.each do |name, dests|
      all_dests += dests
    end
    all_dests.each do |dest|
      if @dispatcher
        @dispatcher.dispatch(body, dest)
      else
        message = raw_message.merge("statusCode" => status_code,
                                    "body" => body,)
        forward(message, "to" => dest, "type" => "dispatcher")
      end
    end
  end
end

#forward(droonga_message, destination) ⇒ void

This method returns an undefined value.

Forwards a Droonga message to other Droonga Engine.

Parameters:

  • droonga_message (Hash) —

    The Droonga message to be forwarded.

  • destination (Hash) —

    The destination of the Droonga message. See Forwarder#forward to know about how to specify destination.

See Also:



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# File 'lib/droonga/handler_messenger.rb', line 107

def forward(droonga_message, destination)
  @forwarder.forward(droonga_message, destination)
end

#inspect ⇒ Object 



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# File 'lib/droonga/handler_messenger.rb', line 111

def inspect
  "\#<#{self.class} id=#{object_id}>"
end