Example #1
0
/*
Conn.performHandshake Responsible for performing handshake with service
*/
func (c *Conn) performHandshake() (err error) {
	var sh skynet.ServiceHandshake
	decoder := bsonrpc.NewDecoder(c.conn)

	err = decoder.Decode(&sh)
	if err != nil {
		log.Println(log.ERROR, "Failed to decode ServiceHandshake", err)
		c.conn.Close()

		return HandshakeFailed
	}

	ch := skynet.ClientHandshake{}
	encoder := bsonrpc.NewEncoder(c.conn)

	err = encoder.Encode(ch)
	if err != nil {
		log.Println(log.ERROR, "Failed to encode ClientHandshake", err)
		c.conn.Close()

		return HandshakeFailed
	}

	if !sh.Registered {
		return ServiceUnregistered
	}

	c.rpcClient = bsonrpc.NewClient(c.conn)
	c.clientID = sh.ClientID

	return
}
Example #2
0
// this function is the goroutine that owns this service - all thread-sensitive data needs to
// be manipulated only through here.
func (s *Service) mux() {
loop:
	for {
		select {
		case conn := <-s.connectionChan:
			clientID := config.NewUUID()

			s.clientMutex.Lock()
			s.ClientInfo[clientID] = ClientInfo{
				Address: conn.RemoteAddr(),
			}
			s.clientMutex.Unlock()

			// send the server handshake
			sh := skynet.ServiceHandshake{
				Registered: s.Registered,
				ClientID:   clientID,
			}
			encoder := bsonrpc.NewEncoder(conn)
			err := encoder.Encode(sh)
			if err != nil {
				log.Println(log.ERROR, "Failed to encode server handshake", err.Error())
				continue
			}
			if !s.Registered {
				conn.Close()
				continue
			}

			// read the client handshake
			var ch skynet.ClientHandshake
			decoder := bsonrpc.NewDecoder(conn)
			err = decoder.Decode(&ch)
			if err != nil {
				log.Println(log.ERROR, "Error calling bsonrpc.NewDecoder: "+err.Error())
				continue
			}

			// here do stuff with the client handshake
			go func() {
				s.RPCServ.ServeCodec(bsonrpc.NewServerCodec(conn))
			}()
		case register := <-s.registeredChan:
			if register {
				s.register()
			} else {
				s.unregister()
			}
		case <-s.shutdownChan:
			s.shutdown()
		case _ = <-s.doneChan:
			break loop
		}
	}
}
Example #3
0
func getConnectionFactory(s *skynet.ServiceInfo) (factory pools.Factory) {
	factory = func() (pools.Resource, error) {
		conn, err := net.Dial("tcp", s.ServiceAddr.String())

		if err != nil {
			// TODO: handle failure here and attempt to connect to a different instance
			return nil, errors.New("Failed to connect to service: " + s.ServiceAddr.String())
		}

		// get the service handshake
		var sh skynet.ServiceHandshake
		decoder := bsonrpc.NewDecoder(conn)

		err = decoder.Decode(&sh)
		if err != nil {
			conn.Close()
			return nil, err
		}

		ch := skynet.ClientHandshake{}
		encoder := bsonrpc.NewEncoder(conn)

		err = encoder.Encode(ch)
		if err != nil {
			conn.Close()
			return nil, err
		}

		if !sh.Registered {
			// this service has unregistered itself, look elsewhere
			conn.Close()
			return factory()
		}

		resource := ServiceResource{
			rpcClient: bsonrpc.NewClient(conn),
			service:   s,
			clientID:  sh.ClientID,
		}

		return resource, nil
	}
	return
}
Example #4
0
func doServiceHandshake(server net.Conn, registered bool, t *testing.T) {
	sh := skynet.ServiceHandshake{
		Registered: registered,
		ClientID:   "abc",
	}

	encoder := bsonrpc.NewEncoder(server)
	err := encoder.Encode(sh)
	if err != nil {
		t.Fatal("Failed to encode server handshake", err)
	}

	var ch skynet.ClientHandshake
	decoder := bsonrpc.NewDecoder(server)
	err = decoder.Decode(&ch)
	if err != nil {
		t.Fatal("Error calling bsonrpc.NewDecoder: ", err)
	}
}