Example #1
0
// dispatchMsgToProtocol will dispatch this sda.Data to the right instance
func (n *TreeNodeInstance) dispatchMsgToProtocol(sdaMsg *ProtocolMsg) error {
	// Decode the inner message here. In older versions, it was decoded before,
	// but first there is no use to do it before, and then every protocols had
	// to manually registers their messages. Since it is done automatically by
	// the Node, decoding should also be done by the node.
	var err error
	t, msg, err := network.UnmarshalRegisteredType(sdaMsg.MsgSlice, network.DefaultConstructors(n.Suite()))
	if err != nil {
		log.Error(n.ServerIdentity().First(), "Error while unmarshalling inner message of SDAData", sdaMsg.MsgType, ":", err)
	}
	// Put the msg into SDAData
	sdaMsg.MsgType = t
	sdaMsg.Msg = msg

	// if message comes from parent, dispatch directly
	// if messages come from children we must aggregate them
	// if we still need to wait for additional messages, we return
	msgType, msgs, done := n.aggregate(sdaMsg)
	if !done {
		log.Lvl3(n.Name(), "Not done aggregating children msgs")
		return nil
	}
	log.Lvlf5("TNI dispatching -Message is: %+v", sdaMsg.Msg)

	switch {
	case n.channels[msgType] != nil:
		log.Lvl4(n.Info(), "Dispatching to channel")
		err = n.DispatchChannel(msgs)
	case n.handlers[msgType] != nil:
		log.Lvl4("Dispatching to handler", n.ServerIdentity().Addresses)
		err = n.dispatchHandler(msgs)
	default:
		return errors.New("This message-type is not handled by this protocol")
	}
	return err
}
Example #2
0
// ReadRunFile reads from a configuration-file for a run. The configuration-file has the
// following syntax:
// Name1 = value1
// Name2 = value2
// [empty line]
// n1, n2, n3, n4
// v11, v12, v13, v14
// v21, v22, v23, v24
//
// The Name1...Namen are global configuration-options.
// n1..nn are configuration-options for one run
// Both the global and the run-configuration are copied to both
// the platform and the app-configuration.
func ReadRunFile(p Platform, filename string) []RunConfig {
	var runconfigs []RunConfig
	masterConfig := NewRunConfig()
	log.Lvl3("Reading file", filename)

	file, err := os.Open(filename)
	defer func() {
		if err := file.Close(); err != nil {
			log.Error("Couldn' close", file.Name())
		}
	}()
	if err != nil {
		log.Fatal("Couldn't open file", file, err)
	}

	// Decoding of the first part of the run config file
	// where the config wont change for the whole set of the simulation's tests
	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		text := scanner.Text()
		log.Lvl3("Decoding", text)
		// end of the first part
		if text == "" {
			break
		}
		if text[0] == '#' {
			continue
		}

		// checking if format is good
		vals := strings.Split(text, "=")
		if len(vals) != 2 {
			log.Fatal("Simulation file:", filename, " is not properly formatted ( key = value )")
		}
		// fill in the general config
		masterConfig.Put(strings.TrimSpace(vals[0]), strings.TrimSpace(vals[1]))
		// also put it in platform
		if _, err := toml.Decode(text, p); err != nil {
			log.Error("Error decoding", text)
		}
		log.Lvlf5("Platform is now %+v", p)
	}

	for {
		scanner.Scan()
		if scanner.Text() != "" {
			break
		}
	}
	args := strings.Split(scanner.Text(), ", ")
	for scanner.Scan() {
		rc := masterConfig.Clone()
		// put each individual test configs
		for i, value := range strings.Split(scanner.Text(), ", ") {
			rc.Put(strings.TrimSpace(args[i]), strings.TrimSpace(value))
		}
		runconfigs = append(runconfigs, *rc)
	}

	return runconfigs
}
Example #3
0
// Send opens the connection to 'dst' and sends the message 'req'. The
// reply is returned, or an error if the timeout of 10 seconds is reached.
func (c *Client) Send(dst *network.ServerIdentity, msg network.Body) (*network.Packet, error) {
	c.Lock()
	defer c.Unlock()
	if c.host == nil {
		kp := config.NewKeyPair(network.Suite)
		c.host = network.NewSecureTCPHost(kp.Secret,
			network.NewServerIdentity(kp.Public, ""))
	}

	// Connect to the root
	log.Lvl4("Opening connection to", dst)
	con, err := c.host.Open(dst)
	defer c.host.Close()
	if err != nil {
		return nil, err
	}

	m, err := network.NewNetworkMessage(msg)
	if err != nil {
		return nil, err
	}

	b, err := m.MarshalBinary()
	if err != nil {
		return nil, err
	}

	serviceReq := &ClientRequest{
		Service: c.ServiceID,
		Data:    b,
	}
	pchan := make(chan network.Packet)
	go func() {
		// send the request
		log.Lvlf4("Sending request %x", serviceReq.Service)
		if err := con.Send(context.TODO(), serviceReq); err != nil {
			close(pchan)
			return
		}
		log.Lvl4("Waiting for the response from", reflect.ValueOf(con).Pointer())
		// wait for the response
		packet, err := con.Receive(context.TODO())
		if err != nil {
			packet.Msg = StatusRet{err.Error()}
			packet.MsgType = network.TypeFromData(&StatusRet{})
		}
		pchan <- packet
	}()
	select {
	case response := <-pchan:
		log.Lvlf5("Response: %+v %+v", response, response.Msg)
		// Catch an eventual error
		err := ErrMsg(&response, nil)
		if err != nil {
			return nil, err
		}
		return &response, nil
	case <-time.After(time.Second * 10):
		return &network.Packet{}, errors.New("Timeout on sending message")
	}
}