return;
}
}
// 查询订阅关系
final SubscriptionData subscriptionData =
this.rebalanceImpl.getSubscriptionInner().get(pullRequest.getMessageQueue().getTopic());
if (null == subscriptionData) {
// 由于并发关系，即使找不到订阅关系，也要重试下，防止丢失PullRequest
this.executePullRequestLater(pullRequest, PullTimeDelayMillsWhenException);
log.warn("find the consumer's subscription failed, {}", pullRequest);
return;
}
final long beginTimestamp = System.currentTimeMillis();
PullCallback pullCallback = new PullCallback() {
@Override
public void onSuccess(PullResult pullResult) {
if (pullResult != null) {
pullResult =
DefaultMQPushConsumerImpl.this.pullAPIWrapper.processPullResult(
pullRequest.getMessageQueue(), pullResult, subscriptionData);
switch (pullResult.getPullStatus()) {
case FOUND:
pullRequest.setNextOffset(pullResult.getNextBeginOffset());
long pullRT = System.currentTimeMillis() - beginTimestamp;
// 统计打点
DefaultMQPushConsumerImpl.this.getConsumerStatsManager().incPullTPS(
pullRequest.getConsumerGroup(), pullRequest.getMessageQueue().getTopic(),
pullResult.getMsgFoundList().size());
DefaultMQPushConsumerImpl.this.getConsumerStatsManager().incPullRT(
pullRequest.getConsumerGroup(), pullRequest.getMessageQueue().getTopic(), pullRT);
boolean dispathToConsume = processQueue.putMessage(pullResult.getMsgFoundList());
DefaultMQPushConsumerImpl.this.consumeMessageService.submitConsumeRequest(//
pullResult.getMsgFoundList(), //
processQueue, //
pullRequest.getMessageQueue(), //
dispathToConsume);
// 流控
if (DefaultMQPushConsumerImpl.this.defaultMQPushConsumer.getPullInterval() > 0) {
DefaultMQPushConsumerImpl.this.executePullRequestLater(pullRequest,
DefaultMQPushConsumerImpl.this.defaultMQPushConsumer.getPullInterval());
}
// 立刻拉消息
else {
DefaultMQPushConsumerImpl.this.executePullRequestImmediately(pullRequest);
}
break;
case NO_NEW_MSG:
pullRequest.setNextOffset(pullResult.getNextBeginOffset());
DefaultMQPushConsumerImpl.this.correctTagsOffset(pullRequest);
DefaultMQPushConsumerImpl.this.executePullRequestImmediately(pullRequest);
break;
case NO_MATCHED_MSG:
pullRequest.setNextOffset(pullResult.getNextBeginOffset());
DefaultMQPushConsumerImpl.this.correctTagsOffset(pullRequest);
DefaultMQPushConsumerImpl.this.executePullRequestImmediately(pullRequest);
break;
case OFFSET_ILLEGAL:
log.warn("the pull request offset illegal, {} {}",//
pullRequest.toString(), pullResult.toString());
pullRequest.setNextOffset(pullResult.getNextBeginOffset());
// 第一步、缓存队列里的消息全部废弃
pullRequest.getProcessQueue().setDroped(true);
// 第二步、等待10s后再执行，防止Offset更新后又被覆盖
DefaultMQPushConsumerImpl.this.executeTaskLater(new Runnable() {
@Override
public void run() {
try {
// 第三步、纠正内部Offset
DefaultMQPushConsumerImpl.this.offsetStore.updateOffset(
pullRequest.getMessageQueue(), pullRequest.getNextOffset(), false);
// 第四步、将最新的Offset更新到服务器
DefaultMQPushConsumerImpl.this.offsetStore.persist(pullRequest
.getMessageQueue());
// 第五步、丢弃当前PullRequest，并且从Rebalabce结果里删除，等待下次Rebalance时，取纠正后的Offset
DefaultMQPushConsumerImpl.this.rebalanceImpl
.removeProcessQueue(pullRequest.getMessageQueue());
log.warn("fix the pull request offset, {}", pullRequest);
}
catch (Throwable e) {
log.error("executeTaskLater Exception", e);
}
}
}, 10000);
break;
default:
break;
}
}
}
@Override
public void onException(Throwable e) {
if (!pullRequest.getMessageQueue().getTopic().startsWith(MixAll.RETRY_GROUP_TOPIC_PREFIX)) {
log.warn("execute the pull request exception", e);
}
DefaultMQPushConsumerImpl.this.executePullRequestLater(pullRequest,
PullTimeDelayMillsWhenException);
}
};
boolean commitOffsetEnable = false;
long commitOffsetValue = 0L;
if (MessageModel.CLUSTERING == this.defaultMQPushConsumer.getMessageModel()) {
commitOffsetValue =
this.offsetStore.readOffset(pullRequest.getMessageQueue(),
ReadOffsetType.READ_FROM_MEMORY);
if (commitOffsetValue > 0) {
commitOffsetEnable = true;
}
}
String subExpression = null;
boolean classFilter = false;
SubscriptionData sd =
this.rebalanceImpl.getSubscriptionInner().get(pullRequest.getMessageQueue().getTopic());
if (sd != null) {
if (this.defaultMQPushConsumer.isPostSubscriptionWhenPull() && !sd.isClassFilterMode()) {
subExpression = sd.getSubString();
}
classFilter = sd.isClassFilterMode();
}
int sysFlag = PullSysFlag.buildSysFlag(//
commitOffsetEnable, // commitOffset
true, // suspend