org.apache.rocketmq.broker.transaction.TransactionalMessageService Maven / Gradle / Ivy
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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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.rocketmq.broker.transaction;
import org.apache.rocketmq.common.message.MessageExt;
import org.apache.rocketmq.common.protocol.header.EndTransactionRequestHeader;
import org.apache.rocketmq.store.MessageExtBrokerInner;
import org.apache.rocketmq.store.PutMessageResult;
public interface TransactionalMessageService {
/**
* Process prepare message, in common, we should put this message to storage service.
*
* @param messageInner Prepare(Half) message.
* @return Prepare message storage result.
*/
PutMessageResult prepareMessage(MessageExtBrokerInner messageInner);
/**
* Delete prepare message when this message has been committed or rolled back.
*
* @param messageExt
*/
boolean deletePrepareMessage(MessageExt messageExt);
/**
* Invoked to process commit prepare message.
*
* @param requestHeader Commit message request header.
* @return Operate result contains prepare message and relative error code.
*/
OperationResult commitMessage(EndTransactionRequestHeader requestHeader);
/**
* Invoked to roll back prepare message.
*
* @param requestHeader Prepare message request header.
* @return Operate result contains prepare message and relative error code.
*/
OperationResult rollbackMessage(EndTransactionRequestHeader requestHeader);
/**
* Traverse uncommitted/unroll back half message and send check back request to producer to obtain transaction
* status.
*
* @param transactionTimeout The minimum time of the transactional message to be checked firstly, one message only
* exceed this time interval that can be checked.
* @param transactionCheckMax The maximum number of times the message was checked, if exceed this value, this
* message will be discarded.
* @param listener When the message is considered to be checked or discarded, the relative method of this class will
* be invoked.
*/
void check(long transactionTimeout, int transactionCheckMax, AbstractTransactionalMessageCheckListener listener);
/**
* Open transaction service.
*
* @return If open success, return true.
*/
boolean open();
/**
* Close transaction service.
*/
void close();
}