/** 基类实现消息监听接口，加上打印metaq监控日志的方法 */
@Override
public ConsumeConcurrentlyStatus consumeMessage(
List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
long startTime = System.currentTimeMillis();
logger.info("receive_message:{}", msgs.toString());
if (msgs == null || msgs.size() < 1) {
logger.error("receive empty msg!");
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
List<Serializable> msgList = new ArrayList<>();
for (MessageExt message : msgs) {
msgList.add(decodeMsg(message));
}
final int reconsumeTimes = msgs.get(0).getReconsumeTimes();
MsgObj msgObj = new MsgObj();
msgObj.setReconsumeTimes(reconsumeTimes);
msgObj.setMsgList(msgList);
msgObj.setContext(context);
context.setDelayLevelWhenNextConsume(getDelayLevelWhenNextConsume(reconsumeTimes));
ConsumeConcurrentlyStatus status = doConsumeMessage(msgObj);
logger.info(
"ConsumeConcurrentlyStatus:{}|cost:{}", status, System.currentTimeMillis() - startTime);
return status;
}
protected ConsumeConcurrentlyStatus exceptionConsumeConcurrentlyStatus(
TransactionStatus status, Throwable e, MsgObj msgObj, int maxRetryCount) {
logger.error("mq consume failed", e);
status.setRollbackOnly();
if (msgObj.getReconsumeTimes() >= maxRetryCount) {
logger.error(
"retryCount: {}, msgs: {}, context: {}", maxRetryCount, msgObj, msgObj.getContext());
msgObj.setErrorMsg(e.getMessage());
doLogErrorConsumeMessage(msgObj);
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
} else {
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
}
public void destroy() {
if (consumer != null) {
consumer.shutdown();
logger.info(
"consumer shutdown! topic={0},subExpression={1},group={2}",
topic.getTopic(), subExpression, group);
}
}
private Serializable decodeMsg(MessageExt msg) {
if (msg == null) {
return null;
}
// 1.反序列化
try {
return HessianUtils.decode(msg.getBody());
} catch (IOException e) {
logger.error("反序列化出错!" + e.getMessage(), e);
return null;
}
}
public void init() throws MQClientException {
nameServer = PropertyFileUtil.get("rocketmq.namesrv.domain");
if (StringUtils.isBlank(nameServer)) {
logger.warn("【MQ init】property rocketmq.namesrv.domain not found");
return;
}
if ("localTest".equals(nameServer)) {
logger.warn("【MQ init】localTest");
return;
}
if (StringUtils.isBlank(System.getProperty("rocketmq.namesrv.domain"))) {
System.setProperty("rocketmq.namesrv.domain", nameServer);
}
topicType = getTopic();
topic = RocketMqUtils.getTopic(topicType);
if (StringUtils.isBlank(group)) {
group = "S_" + topic.getTopic() + "_" + topic.getTags();
}
consumer = new DefaultMQPushConsumer(group);
consumer.setNamesrvAddr(nameServer);
consumer.setMessageModel(getMessageModel());
consumer.setConsumeThreadMin(minConsumeThread);
consumer.setConsumeThreadMax(maxConsumeThread);
// 可以不设置 设置后可以起多个 消费端
try {
consumer.setInstanceName("DEFAULT_CONSUMER-" + InetAddress.getLocalHost().getHostName());
} catch (UnknownHostException e) {
logger.error("getHostName error", e);
}
// 设置订阅的topic 设置订阅过滤表达式
if (StringUtils.isBlank(subExpression)) {
subExpression = topic.getTags();
consumer.subscribe(topic.getTopic(), subExpression);
} else {
consumer.subscribe(topic.getTopic(), subExpression);
}
try {
consumer.registerMessageListener(this);
consumer.start();
} catch (MQClientException e) {
logger.error(
"consumer start error!topic={},subExpression={},group={}",
topic.getTopic(),
subExpression,
group,
e);
}
logger.info(
"consumer start! topic={},subExpression={},group={}",
topic.getTopic(),
subExpression,
group);
}