예제 #1
0
func (p *protocolV2) REQ(client *nsqd.ClientV2, params [][]byte) ([]byte, error) {
	state := atomic.LoadInt32(&client.State)
	if state != stateSubscribed && state != stateClosing {
		nsqd.NsqLogger().LogWarningf("[%s] command in wrong state: %v", client, state)
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, "cannot REQ in current state")
	}

	if len(params) < 3 {
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, "REQ insufficient number of params")
	}

	id, err := getFullMessageID(params[1])
	if err != nil {
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, err.Error())
	}

	timeoutMs, err := protocol.ByteToBase10(params[2])
	if err != nil {
		return nil, protocol.NewFatalClientErr(err, E_INVALID,
			fmt.Sprintf("REQ could not parse timeout %s", params[2]))
	}
	timeoutDuration := time.Duration(timeoutMs) * time.Millisecond

	if timeoutDuration < 0 || timeoutDuration > p.ctx.getOpts().MaxReqTimeout {
		return nil, protocol.NewFatalClientErr(nil, E_INVALID,
			fmt.Sprintf("REQ timeout %v out of range 0-%v", timeoutDuration, p.ctx.getOpts().MaxReqTimeout))
	}

	if client.Channel == nil {
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, "No channel")
	}
	err = client.Channel.RequeueMessage(client.ID, client.String(), nsqd.GetMessageIDFromFullMsgID(*id), timeoutDuration, true)
	if err != nil {
		client.IncrSubError(int64(1))
		return nil, protocol.NewClientErr(err, "E_REQ_FAILED",
			fmt.Sprintf("REQ %v failed %s", *id, err.Error()))
	}

	client.RequeuedMessage(timeoutDuration > 0)

	return nil, nil
}