Class: Fluffle::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/fluffle/server.rb

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url: nil) ⇒ Server

Returns a new instance of Server.



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# File 'lib/fluffle/server.rb', line 9

def initialize(url: nil)
  self.connect(url) if url

  @handlers = {}
  @queues   = {}

  self.class.default_server ||= self
end

Class Attribute Details

.default_server ⇒ Object

Returns the value of attribute default_server.



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# File 'lib/fluffle/server.rb', line 4

def default_server
  @default_server
end

Instance Attribute Details

#connection ⇒ Object (readonly)

Returns the value of attribute connection.



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# File 'lib/fluffle/server.rb', line 7

def connection
  @connection
end

#handlers ⇒ Object (readonly)

Returns the value of attribute handlers.



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# File 'lib/fluffle/server.rb', line 7

def handlers
  @handlers
end

Instance Method Details

#connect(*args) ⇒ Object 



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# File 'lib/fluffle/server.rb', line 18

def connect(*args)
  self.stop if self.connected?

  @connection = Bunny.new *args
  @connection.start
end

#connected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluffle/server.rb', line 25

def connected?
  @connection&.connected?
end

#drain(queue: 'default', handler: nil, &block) ⇒ Object 



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# File 'lib/fluffle/server.rb', line 29

def drain(queue: 'default', handler: nil, &block)
  if handler && block
    raise ArgumentError, 'Cannot provide both handler: and block'
  end

  handler = Fluffle::Handlers::Dispatcher.new(&block) if block

  @handlers[queue.to_s] = handler
end

#handle_request(queue_name:, handler:, delivery_info:, properties:, payload:) ⇒ Object 



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# File 'lib/fluffle/server.rb', line 59

def handle_request(queue_name:, handler:, delivery_info:, properties:, payload:)
  id       = nil
  reply_to = properties[:reply_to]

  begin
    id, method, params = self.decode payload

    validate_request method: method

    result = handler.call id: id,
                          method: method,
                          params: params,
                          meta: {
                            reply_to: reply_to
                          }
  rescue => err
    error = self.build_error_response err
  end

  response = { 'jsonrpc' => '2.0', 'id' => id }

  if error
    response['error'] = error
  else
    response['result'] = result
  end

  @exchange.publish Oj.dump(response), routing_key: reply_to,
                                       correlation_id: id
end

#start ⇒ Object 



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# File 'lib/fluffle/server.rb', line 39

def start
  @channel  = @connection.create_channel
  @exchange = @channel.default_exchange

  @handlers.each do |name, handler|
    qualified_name = Fluffle.request_queue_name name
    queue          = @channel.queue qualified_name

    queue.subscribe do |delivery_info, properties, payload|
      self.handle_request queue_name: name,
                          handler: handler,
                          delivery_info: delivery_info,
                          properties: properties,
                          payload: payload
    end
  end

  @channel.work_pool.join
end