Ejemplo n.º 1
0
func forwardUserRequest(dispatcherHost string, m *piazza.Message) (*piazza.Message, error) {
	log.Printf("forwarding user request")

	buf, err := m.ToBytes()
	var buff = bytes.NewBuffer(buf)
	if err != nil {
		return nil, err
	}

	resp, err := http.Post(dispatcherHost, "application/json", buff)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	// resp has a message of type CreateJobResponsePayload, with the id filled in
	buff = new(bytes.Buffer)
	buff.ReadFrom(resp.Body)

	m2, err := piazza.NewMessageFromBytes(buff.Bytes())
	if err != nil {
		return nil, err
	}
	log.Printf("returning request response")

	return m2, nil
}
Ejemplo n.º 2
0
// send a message to the dispatcher
func (proxy *GatewayProxy) Send(m *piazza.Message) (piazza.PiazzaId, error) {
	log.Print("(GatewayProxy.Send)")

	url := fmt.Sprintf("%s/message", proxy.DispatcherHost)

	buf, err := m.ToBytes()
	if err != nil {
		return "", err
	}
	buff := bytes.NewBuffer(buf)

	resp, err := http.Post(url, "application/json", buff)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()

	buf, err = ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", err
	}

	var obj piazza.Message
	err = json.Unmarshal(buf, &obj)
	if err != nil {
		return "", err
	}

	status := obj.CreateJobResponsePayload.JobStatus
	if status != piazza.JobStatusSubmitted {
		return "", errors.New(fmt.Sprintf("bad job status: %v", status))
	}

	pid := obj.CreateJobResponsePayload.JobId
	return pid, nil
}