public static void main(String[] args) {
try {
MQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
producer.start();
String[] tags = new String[] {"TagA", "TagB", "TagC", "TagD", "TagE"};
for (int i = 0; i < 100; i++) {
// 订单ID相同的消息要有序
int orderId = i % 10;
Message msg =
new Message(
"TopicTest", tags[i % tags.length], "KEY" + i, ("Hello RocketMQ " + i).getBytes());
SendResult sendResult =
producer.send(
msg,
new MessageQueueSelector() {
@Override
public MessageQueue select(List<MessageQueue> mqs, Message msg, Object arg) {
Integer id = (Integer) arg;
int index = id % mqs.size();
return mqs.get(index);
}
},
orderId);
System.out.println(sendResult);
}
producer.shutdown();
} catch (MQClientException e) {
e.printStackTrace();
} catch (RemotingException e) {
e.printStackTrace();
} catch (MQBrokerException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private SendResult sendDefaultImpl( //
Message msg, //
final CommunicationMode communicationMode, //
final SendCallback sendCallback //
) throws MQClientException, RemotingException, MQBrokerException, InterruptedException {
// 有效性检查
this.makeSureStateOK();
Validators.checkMessage(msg, this.defaultMQProducer);
final long beginTimestamp = System.currentTimeMillis();
long endTimestamp = beginTimestamp;
TopicPublishInfo topicPublishInfo = this.tryToFindTopicPublishInfo(msg.getTopic());
if (topicPublishInfo != null && topicPublishInfo.ok()) {
MessageQueue mq = null;
Exception exception = null;
SendResult sendResult = null;
int timesTotal = 1 + this.defaultMQProducer.getRetryTimesWhenSendFailed();
for (int times = 0;
times < timesTotal
&& (endTimestamp - beginTimestamp) < this.defaultMQProducer.getSendMsgTimeout();
times++) {
String lastBrokerName = null == mq ? null : mq.getBrokerName();
MessageQueue tmpmq = topicPublishInfo.selectOneMessageQueue(lastBrokerName);
if (tmpmq != null) {
mq = tmpmq;
try {
sendResult = this.sendKernelImpl(msg, mq, communicationMode, sendCallback);
endTimestamp = System.currentTimeMillis();
switch (communicationMode) {
case ASYNC:
return null;
case ONEWAY:
return null;
case SYNC:
if (sendResult.getSendStatus() != SendStatus.SEND_OK) {
if (this.defaultMQProducer.isRetryAnotherBrokerWhenNotStoreOK()) {
continue;
}
}
return sendResult;
default:
break;
}
} catch (RemotingException e) {
log.warn("sendKernelImpl exception", e);
log.warn(msg.toString());
exception = e;
endTimestamp = System.currentTimeMillis();
continue;
} catch (MQClientException e) {
log.warn("sendKernelImpl exception", e);
log.warn(msg.toString());
exception = e;
endTimestamp = System.currentTimeMillis();
continue;
} catch (MQBrokerException e) {
log.warn("sendKernelImpl exception", e);
log.warn(msg.toString());
exception = e;
endTimestamp = System.currentTimeMillis();
switch (e.getResponseCode()) {
case MQResponseCode.TOPIC_NOT_EXIST_VALUE:
case MQResponseCode.SERVICE_NOT_AVAILABLE_VALUE:
case ResponseCode.SYSTEM_ERROR_VALUE:
case MQResponseCode.NO_PERMISSION_VALUE:
continue;
default:
if (sendResult != null) {
return sendResult;
}
throw e;
}
} catch (InterruptedException e) {
log.warn("sendKernelImpl exception", e);
log.warn(msg.toString());
throw e;
}
} else {
break;
}
} // end of for
if (sendResult != null) {
return sendResult;
}
throw new MQClientException("Retry many times, still failed", exception);
}
List<String> nsList = this.getmQClientFactory().getMQClientAPIImpl().getNameServerAddressList();
if (null == nsList || nsList.isEmpty()) {
// 说明没有设置Name Server地址
throw new MQClientException(
"No name server address, please set it."
+ FAQUrl.suggestTodo(FAQUrl.NAME_SERVER_ADDR_NOT_EXIST_URL),
null);
}
throw new MQClientException(
"No route info of this topic, "
+ msg.getTopic()
+ FAQUrl.suggestTodo(FAQUrl.NO_TOPIC_ROUTE_INFO),
null);
}