com.alibaba.rocketmq.common.protocol.header.PullMessageRequestHeader Java Examples

The following examples show how to use com.alibaba.rocketmq.common.protocol.header.PullMessageRequestHeader. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: PullAPIWrapper.java    From reading-and-annotate-rocketmq-3.4.6 with GNU General Public License v3.0 4 votes vote down vote up 
public PullResult pullKernelImpl(//
        final MessageQueue mq,// 1
        final String subExpression,// 2
        final long subVersion,// 3
        final long offset,// 4
        final int maxNums,// 5
        final int sysFlag,// 6
        final long commitOffset,// 7
        final long brokerSuspendMaxTimeMillis,// 8
        final long timeoutMillis,// 9
        final CommunicationMode communicationMode,// 10
        final PullCallback pullCallback// 11
) throws MQClientException, RemotingException, MQBrokerException, InterruptedException {
    FindBrokerResult findBrokerResult =
            this.mQClientFactory.findBrokerAddressInSubscribe(mq.getBrokerName(),
                this.recalculatePullFromWhichNode(mq), false);
    if (null == findBrokerResult) {
        //PullAPIWrapper.pullKernelImpl中调用updateTopicRouteInfoFromNameServer进行TopicRoute信息更新，最终保存在MQClientInstance.topicRouteTable
        this.mQClientFactory.updateTopicRouteInfoFromNameServer(mq.getTopic());
        findBrokerResult =
                this.mQClientFactory.findBrokerAddressInSubscribe(mq.getBrokerName(),
                    this.recalculatePullFromWhichNode(mq), false);
    }

    if (findBrokerResult != null) {
        int sysFlagInner = sysFlag;

        if (findBrokerResult.isSlave()) { //拉取broker选择了slave, 清理掉提交消费位点的系统标识位。
            sysFlagInner = PullSysFlag.clearCommitOffsetFlag(sysFlagInner);
        }

        PullMessageRequestHeader requestHeader = new PullMessageRequestHeader();
        requestHeader.setConsumerGroup(this.consumerGroup);
        requestHeader.setTopic(mq.getTopic());
        requestHeader.setQueueId(mq.getQueueId());
        requestHeader.setQueueOffset(offset);
        requestHeader.setMaxMsgNums(maxNums);
        requestHeader.setSysFlag(sysFlagInner);
        requestHeader.setCommitOffset(commitOffset);
        requestHeader.setSuspendTimeoutMillis(brokerSuspendMaxTimeMillis);
        requestHeader.setSubscription(subExpression);
        requestHeader.setSubVersion(subVersion);

        String brokerAddr = findBrokerResult.getBrokerAddr();
        if (PullSysFlag.hasClassFilterFlag(sysFlagInner)) {
            brokerAddr = computPullFromWhichFilterServer(mq.getTopic(), brokerAddr);
        }

        //开始从broker对应的brokerAddr拉取消息
        PullResult pullResult = this.mQClientFactory.getMQClientAPIImpl().pullMessage(//
                brokerAddr,//
                requestHeader,//
                timeoutMillis,//
                communicationMode,//同步从broker拉取消息还是异步拉取消息
                pullCallback);

        return pullResult;
    }

    throw new MQClientException("The broker[" + mq.getBrokerName() + "] not exist", null);
}
Example #2
Source File: PullAPIWrapper.java    From rocketmq with Apache License 2.0 4 votes vote down vote up 
public PullResult pullKernelImpl(//
                                 final MessageQueue mq,// 1
                                 final String subExpression,// 2
                                 final long subVersion,// 3
                                 final long offset,// 4
                                 final int maxNums,// 5
                                 final int sysFlag,// 6
                                 final long commitOffset,// 7
                                 final long brokerSuspendMaxTimeMillis,// 8
                                 final long timeoutMillis,// 9
                                 final CommunicationMode communicationMode,// 10
                                 final PullCallback pullCallback// 11
) throws MQClientException, RemotingException, MQBrokerException, InterruptedException {
    FindBrokerResult findBrokerResult =
            this.mQClientFactory.findBrokerAddressInSubscribe(mq.getBrokerName(),
                    this.recalculatePullFromWhichNode(mq), false);
    if (null == findBrokerResult) {
        this.mQClientFactory.updateTopicRouteInfoFromNameServer(mq.getTopic());
        findBrokerResult =
                this.mQClientFactory.findBrokerAddressInSubscribe(mq.getBrokerName(),
                        this.recalculatePullFromWhichNode(mq), false);
    }

    if (findBrokerResult != null) {
        int sysFlagInner = sysFlag;

        if (findBrokerResult.isSlave()) {
            sysFlagInner = PullSysFlag.clearCommitOffsetFlag(sysFlagInner);
        }

        PullMessageRequestHeader requestHeader = new PullMessageRequestHeader();
        requestHeader.setConsumerGroup(this.consumerGroup);
        requestHeader.setTopic(mq.getTopic());
        requestHeader.setQueueId(mq.getQueueId());
        requestHeader.setQueueOffset(offset);
        requestHeader.setMaxMsgNums(maxNums);
        requestHeader.setSysFlag(sysFlagInner);
        requestHeader.setCommitOffset(commitOffset);
        requestHeader.setSuspendTimeoutMillis(brokerSuspendMaxTimeMillis);
        requestHeader.setSubscription(subExpression);
        requestHeader.setSubVersion(subVersion);

        String brokerAddr = findBrokerResult.getBrokerAddr();
        if (PullSysFlag.hasClassFilterFlag(sysFlagInner)) {
            brokerAddr = computPullFromWhichFilterServer(mq.getTopic(), brokerAddr);
        }

        PullResult pullResult = this.mQClientFactory.getMQClientAPIImpl().pullMessage(//
                brokerAddr,//
                requestHeader,//
                timeoutMillis,//
                communicationMode,//
                pullCallback);

        return pullResult;
    }

    throw new MQClientException("The broker[" + mq.getBrokerName() + "] not exist", null);
}
Example #3
Source File: PullAPIWrapper.java    From RocketMQ-Master-analyze with Apache License 2.0 4 votes vote down vote up 
public PullResult pullKernelImpl(//
        final MessageQueue mq, // 1
        final String subExpression, // 2
        final long subVersion, // 3
        final long offset, // 4
        final int maxNums, // 5
        final int sysFlag, // 6
        final long commitOffset, // 7
        final long brokerSuspendMaxTimeMillis, // 8
        final long timeoutMillis, // 9
        final CommunicationMode communicationMode, // 10
        final PullCallback pullCallback// 11
) throws MQClientException, RemotingException, MQBrokerException, InterruptedException {
    FindBrokerResult findBrokerResult = this.mQClientFactory
        .findBrokerAddressInSubscribe(mq.getBrokerName(), this.recalculatePullFromWhichNode(mq), false);
    if (null == findBrokerResult) {
        this.mQClientFactory.updateTopicRouteInfoFromNameServer(mq.getTopic());
        findBrokerResult = this.mQClientFactory.findBrokerAddressInSubscribe(mq.getBrokerName(),
            this.recalculatePullFromWhichNode(mq), false);
    }

    if (findBrokerResult != null) {
        int sysFlagInner = sysFlag;

        if (findBrokerResult.isSlave()) {
            sysFlagInner = PullSysFlag.clearCommitOffsetFlag(sysFlagInner);
        }

        PullMessageRequestHeader requestHeader = new PullMessageRequestHeader();
        requestHeader.setConsumerGroup(this.consumerGroup);
        requestHeader.setTopic(mq.getTopic());
        requestHeader.setQueueId(mq.getQueueId());
        requestHeader.setQueueOffset(offset);
        requestHeader.setMaxMsgNums(maxNums);
        requestHeader.setSysFlag(sysFlagInner);
        requestHeader.setCommitOffset(commitOffset);
        requestHeader.setSuspendTimeoutMillis(brokerSuspendMaxTimeMillis);
        requestHeader.setSubscription(subExpression);
        requestHeader.setSubVersion(subVersion);

        String brokerAddr = findBrokerResult.getBrokerAddr();
        if (PullSysFlag.hasClassFilterFlag(sysFlagInner)) {
            brokerAddr = computPullFromWhichFilterServer(mq.getTopic(), brokerAddr);
        }

        PullResult pullResult = this.mQClientFactory.getMQClientAPIImpl().pullMessage(//
            brokerAddr, //
            requestHeader, //
            timeoutMillis, //
            communicationMode, //
            pullCallback);

        return pullResult;
    }

    throw new MQClientException("The broker[" + mq.getBrokerName() + "] not exist", null);
}