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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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.rocketmq.client.impl.consumer;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.apache.rocketmq.client.consumer.AllocateMessageQueueStrategy;
import org.apache.rocketmq.client.consumer.store.OffsetStore;
import org.apache.rocketmq.client.consumer.store.ReadOffsetType;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.impl.factory.MQClientInstance;
import org.apache.rocketmq.common.MixAll;
import org.apache.rocketmq.common.UtilAll;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.MessageQueue;
import org.apache.rocketmq.common.protocol.heartbeat.ConsumeType;
import org.apache.rocketmq.common.protocol.heartbeat.MessageModel;
import org.apache.rocketmq.common.protocol.heartbeat.SubscriptionData;
public class RebalancePushImpl extends RebalanceImpl {
private final static long UNLOCK_DELAY_TIME_MILLS = Long.parseLong(System.getProperty("rocketmq.client.unlockDelayTimeMills", "20000"));
private final DefaultMQPushConsumerImpl defaultMQPushConsumerImpl;
public RebalancePushImpl(DefaultMQPushConsumerImpl defaultMQPushConsumerImpl) {
this(null, null, null, null, defaultMQPushConsumerImpl);
}
public RebalancePushImpl(String consumerGroup, MessageModel messageModel,
AllocateMessageQueueStrategy allocateMessageQueueStrategy,
MQClientInstance mQClientFactory, DefaultMQPushConsumerImpl defaultMQPushConsumerImpl) {
super(consumerGroup, messageModel, allocateMessageQueueStrategy, mQClientFactory);
this.defaultMQPushConsumerImpl = defaultMQPushConsumerImpl;
}
@Override
public void messageQueueChanged(String topic, Set mqAll, Set mqDivided) {
/**
* When rebalance result changed, should update subscription's version to notify broker.
* Fix: inconsistency subscription may lead to consumer miss messages.
*/
SubscriptionData subscriptionData = this.subscriptionInner.get(topic);
long newVersion = System.currentTimeMillis();
log.info("{} Rebalance changed, also update version: {}, {}", topic, subscriptionData.getSubVersion(), newVersion);
subscriptionData.setSubVersion(newVersion);
int currentQueueCount = this.processQueueTable.size();
if (currentQueueCount != 0) {
int pullThresholdForTopic = this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().getPullThresholdForTopic();
if (pullThresholdForTopic != -1) {
int newVal = Math.max(1, pullThresholdForTopic / currentQueueCount);
log.info("The pullThresholdForQueue is changed from {} to {}",
this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().getPullThresholdForQueue(), newVal);
this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().setPullThresholdForQueue(newVal);
}
int pullThresholdSizeForTopic = this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().getPullThresholdSizeForTopic();
if (pullThresholdSizeForTopic != -1) {
int newVal = Math.max(1, pullThresholdSizeForTopic / currentQueueCount);
log.info("The pullThresholdSizeForQueue is changed from {} to {}",
this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().getPullThresholdSizeForQueue(), newVal);
this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().setPullThresholdSizeForQueue(newVal);
}
}
// notify broker
this.getmQClientFactory().sendHeartbeatToAllBrokerWithLock();
}
@Override
public boolean removeUnnecessaryMessageQueue(MessageQueue mq, ProcessQueue pq) {
this.defaultMQPushConsumerImpl.getOffsetStore().persist(mq);
this.defaultMQPushConsumerImpl.getOffsetStore().removeOffset(mq);
if (this.defaultMQPushConsumerImpl.isConsumeOrderly()
&& MessageModel.CLUSTERING.equals(this.defaultMQPushConsumerImpl.messageModel())) {
try {
if (pq.getLockConsume().tryLock(1000, TimeUnit.MILLISECONDS)) {
try {
return this.unlockDelay(mq, pq);
} finally {
pq.getLockConsume().unlock();
}
} else {
log.warn("[WRONG]mq is consuming, so can not unlock it, {}. maybe hanged for a while, {}",
mq,
pq.getTryUnlockTimes());
pq.incTryUnlockTimes();
}
} catch (Exception e) {
log.error("removeUnnecessaryMessageQueue Exception", e);
}
return false;
}
return true;
}
private boolean unlockDelay(final MessageQueue mq, final ProcessQueue pq) {
if (pq.hasTempMessage()) {
log.info("[{}]unlockDelay, begin {} ", mq.hashCode(), mq);
this.defaultMQPushConsumerImpl.getmQClientFactory().getScheduledExecutorService().schedule(new Runnable() {
@Override
public void run() {
log.info("[{}]unlockDelay, execute at once {}", mq.hashCode(), mq);
RebalancePushImpl.this.unlock(mq, true);
}
}, UNLOCK_DELAY_TIME_MILLS, TimeUnit.MILLISECONDS);
} else {
this.unlock(mq, true);
}
return true;
}
@Override
public ConsumeType consumeType() {
return ConsumeType.CONSUME_PASSIVELY;
}
@Override
public void removeDirtyOffset(final MessageQueue mq) {
this.defaultMQPushConsumerImpl.getOffsetStore().removeOffset(mq);
}
@Override
public long computePullFromWhere(MessageQueue mq) {
long result = -1;
final ConsumeFromWhere consumeFromWhere = this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().getConsumeFromWhere();
final OffsetStore offsetStore = this.defaultMQPushConsumerImpl.getOffsetStore();
switch (consumeFromWhere) {
case CONSUME_FROM_LAST_OFFSET_AND_FROM_MIN_WHEN_BOOT_FIRST:
case CONSUME_FROM_MIN_OFFSET:
case CONSUME_FROM_MAX_OFFSET:
case CONSUME_FROM_LAST_OFFSET: {
long lastOffset = offsetStore.readOffset(mq, ReadOffsetType.READ_FROM_STORE);
if (lastOffset >= 0) {
result = lastOffset;
}
// First start,no offset
else if (-1 == lastOffset) {
if (mq.getTopic().startsWith(MixAll.RETRY_GROUP_TOPIC_PREFIX)) {
result = 0L;
} else {
try {
result = this.mQClientFactory.getMQAdminImpl().maxOffset(mq);
} catch (MQClientException e) {
result = -1;
}
}
} else {
result = -1;
}
break;
}
case CONSUME_FROM_FIRST_OFFSET: {
long lastOffset = offsetStore.readOffset(mq, ReadOffsetType.READ_FROM_STORE);
if (lastOffset >= 0) {
result = lastOffset;
} else if (-1 == lastOffset) {
result = 0L;
} else {
result = -1;
}
break;
}
case CONSUME_FROM_TIMESTAMP: {
long lastOffset = offsetStore.readOffset(mq, ReadOffsetType.READ_FROM_STORE);
if (lastOffset >= 0) {
result = lastOffset;
} else if (-1 == lastOffset) {
if (mq.getTopic().startsWith(MixAll.RETRY_GROUP_TOPIC_PREFIX)) {
try {
result = this.mQClientFactory.getMQAdminImpl().maxOffset(mq);
} catch (MQClientException e) {
result = -1;
}
} else {
try {
long timestamp = UtilAll.parseDate(this.defaultMQPushConsumerImpl.getDefaultMQPushConsumer().getConsumeTimestamp(),
UtilAll.YYYYMMDDHHMMSS).getTime();
result = this.mQClientFactory.getMQAdminImpl().searchOffset(mq, timestamp);
} catch (MQClientException e) {
result = -1;
}
}
} else {
result = -1;
}
break;
}
default:
break;
}
return result;
}
@Override
public void dispatchPullRequest(List pullRequestList) {
for (PullRequest pullRequest : pullRequestList) {
this.defaultMQPushConsumerImpl.executePullRequestImmediately(pullRequest);
log.info("doRebalance, {}, add a new pull request {}", consumerGroup, pullRequest);
}
}
}
