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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
package rocketmq
#cgo LDFLAGS: -L/usr/local/lib/ -lrocketmq
#include <rocketmq/CMessage.h>
#include <rocketmq/CMessageExt.h>
#include <stdlib.h>
import "C"
import (
type Message struct {
Topic string
Tags string
Keys string
Body string
DelayTimeLevel int
Property map[string]string
func (msg *Message) String() string {
return fmt.Sprintf("[Topic: %s, Tags: %s, Keys: %s, Body: %s, DelayTimeLevel: %d, Property: %v]",
msg.Topic, msg.Tags, msg.Keys, msg.Body, msg.DelayTimeLevel, msg.Property)
func goMsgToC(gomsg *Message) *C.struct_CMessage {
cs := C.CString(gomsg.Topic)
var cmsg = C.CreateMessage(cs)
cs = C.CString(gomsg.Tags)
C.SetMessageTags(cmsg, cs)
cs = C.CString(gomsg.Keys)
C.SetMessageKeys(cmsg, cs)
cs = C.CString(gomsg.Body)
C.SetMessageBody(cmsg, cs)
for k, v := range gomsg.Property {
key := C.CString(k)
value := C.CString(v)
C.SetMessageProperty(cmsg, key, value)
return cmsg
type MessageExt struct {
MessageID string
QueueId int
ReconsumeTimes int
StoreSize int
BornTimestamp int64
StoreTimestamp int64
QueueOffset int64
CommitLogOffset int64
PreparedTransactionOffset int64
// improve: is there is a method convert c++ map to go variable?
cmsgExt *C.struct_CMessageExt
func (msgExt *MessageExt) String() string {
return fmt.Sprintf("[MessageId: %s, %s, QueueId: %d, ReconsumeTimes: %d, StoreSize: %d, BornTimestamp: %d, "+
"StoreTimestamp: %d, QueueOffset: %d, CommitLogOffset: %d, PreparedTransactionOffset: %d]", msgExt.MessageID,
msgExt.Message.String(), msgExt.QueueId, msgExt.ReconsumeTimes, msgExt.StoreSize, msgExt.BornTimestamp,
msgExt.StoreTimestamp, msgExt.QueueOffset, msgExt.CommitLogOffset, msgExt.PreparedTransactionOffset)
func (msgExt *MessageExt) GetProperty(key string) string {
return C.GoString(C.GetMessageProperty(msgExt.cmsgExt, C.CString(key)))
func cmsgExtToGo(cmsg *C.struct_CMessageExt) *MessageExt {
gomsg := &MessageExt{cmsgExt: cmsg}
gomsg.Topic = C.GoString(C.GetMessageTopic(cmsg))
gomsg.Tags = C.GoString(C.GetMessageTags(cmsg))
gomsg.Keys = C.GoString(C.GetMessageKeys(cmsg))
gomsg.Body = C.GoString(C.GetMessageBody(cmsg))
gomsg.MessageID = C.GoString(C.GetMessageId(cmsg))
gomsg.DelayTimeLevel = int(C.GetMessageDelayTimeLevel(cmsg))
gomsg.QueueId = int(C.GetMessageQueueId(cmsg))
gomsg.ReconsumeTimes = int(C.GetMessageReconsumeTimes(cmsg))
gomsg.StoreSize = int(C.GetMessageStoreSize(cmsg))
gomsg.BornTimestamp = int64(C.GetMessageBornTimestamp(cmsg))
gomsg.StoreTimestamp = int64(C.GetMessageStoreTimestamp(cmsg))
gomsg.QueueOffset = int64(C.GetMessageQueueOffset(cmsg))
gomsg.CommitLogOffset = int64(C.GetMessageCommitLogOffset(cmsg))
gomsg.PreparedTransactionOffset = int64(C.GetMessagePreparedTransactionOffset(cmsg))
return gomsg