Class: SeapigServer

Inherits:
Object
  • Object
show all
Defined in:
lib/seapig/client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uri, options = {}) ⇒ SeapigServer

Returns a new instance of SeapigServer.



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# File 'lib/seapig/client.rb', line 30

def initialize(uri, options={})
	@connected = false
	@uri = uri
	@options = options
	@slave_objects = {}
	@master_objects = {}
	@notifier_objects = {}

	connect
end

Instance Attribute Details

#connected ⇒ Object (readonly)

Returns the value of attribute connected.



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# File 'lib/seapig/client.rb', line 28

def connected
  @connected
end

#socket ⇒ Object (readonly)

Returns the value of attribute socket.



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# File 'lib/seapig/client.rb', line 28

def socket
  @socket
end

Instance Method Details

#connect ⇒ Object 



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# File 'lib/seapig/client.rb', line 42

def connect

	if @socket
		@socket.onclose {}
		@socket.close
	end

	@timeout_timer ||= EM.add_periodic_timer(10) {
		next if not @socket
		next if Time.new.to_f - @last_communication_at < 20
		puts "Seapig ping timeout, reconnecting"
		connect
	}

	@connected = false

	@last_communication_at = Time.new.to_f
	@socket = WebSocket::EventMachine::Client.connect(uri: @uri)

	@socket.onopen {
		puts 'Connected to seapig server'
		@connected = true
		@socket.send JSON.dump(action: 'client-options-set', options: @options)
		@slave_objects.each_pair { |object_id, object|
			@socket.send JSON.dump(action: 'object-consumer-register', id: object_id, "known-version" => object.version)
		}
		@master_objects.each_pair { |object_id, object|
			@socket.send JSON.dump(action: 'object-producer-register', pattern: object_id, "known-version" => object.version)
		}
		@last_communication_at = Time.new.to_f
	}

	@socket.onmessage { |message|
		message = JSON.load message
		#p message['action'], message['id'], message['patch']
		case message['action']
		when 'object-update'
			@slave_objects.values.each { |object|
				object.patch(message) if object.matches?(message['id'])
			}
		when 'object-destroy'
			@slave_objects.values.each { |object|
				object.destroy(message) if object.matches?(message['id'])
			}
		when 'object-produce'
			handler = @master_objects.keys.find { |key| key.include?('*') and (message['id'] =~ Regexp.new(Regexp.escape(key).gsub('\*','.*?'))) or (message['id'] == key) }
			raise "Stupid produce" if not @master_objects[handler]
			@master_objects[handler].produce(message['id'],message['version'])
		else
			p :wtf, message
		end
		@last_communication_at = Time.new.to_f
	}

	@socket.onclose { |code, reason|
		puts 'Seapig connection died unexpectedly (code:'+code.inspect+', reason:'+reason.inspect+'), reconnecting in 1s'
		EM.add_timer(1) { connect }
	}

	@socket.onerror { |error|
		puts 'Seapig error: '+error.inspect
		@socket.close
		EM.add_timer(1) { connect }
	}

	@socket.onping {
		@last_communication_at = Time.new.to_f
	}

end

#detach_fd ⇒ Object 



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# File 'lib/seapig/client.rb', line 132

def detach_fd
	disconnect(true)
end

#disconnect(detach_fd = false) ⇒ Object 



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# File 'lib/seapig/client.rb', line 114

def disconnect(detach_fd = false)
	@connected = false
	if @timeout_timer
		@timeout_timer.cancel
		@timeout_timer = nil
	end
	if @socket
		@socket.onclose {}
		if detach_fd
			IO.new(@socket.detach).close
		else
			@socket.close
		end
		@socket = nil
	end
end

#master(object_id) ⇒ Object 



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# File 'lib/seapig/client.rb', line 144

def master(object_id)
	object = if object_id.include?('*') then SeapigWildcardObject.new(self, object_id) else SeapigObject.new(self, object_id) end
	object.version = nil
	@socket.send JSON.dump(action: 'object-producer-register', pattern: object_id) if @connected
	@master_objects[object_id] = object
end

#notifier(object_id) ⇒ Object 



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# File 'lib/seapig/client.rb', line 152

def notifier(object_id)
	object = SeapigObject.new(self, object_id)
	object.version = nil
	@notifier_objects[object_id] = object
end

#slave(object_id) ⇒ Object 



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# File 'lib/seapig/client.rb', line 137

def slave(object_id)
	object = if object_id.include?('*') then SeapigWildcardObject.new(self, object_id) else SeapigObject.new(self, object_id) end
	@socket.send JSON.dump(action: 'object-consumer-register', id: object_id, latest_known_version: object.version) if @connected
	@slave_objects[object_id] = object
end