kafka TransactionContext 源码
kafka TransactionContext 代码
文件路径：/connect/api/src/main/java/org/apache/kafka/connect/source/TransactionContext.java
/*
* 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.kafka.connect.source;
/**
* Provided to source tasks to allow them to define their own producer transaction boundaries when
* exactly-once support is enabled.
*/
public interface TransactionContext {
/**
* Request a transaction commit after the next batch of records from {@link SourceTask#poll()}
* is processed.
*/
void commitTransaction();
/**
* Request a transaction commit after a source record is processed. The source record will be the
* last record in the committed transaction.
* @param record the record to commit the transaction after; may not be null.
*/
void commitTransaction(SourceRecord record);
/**
* Requests a transaction abort after the next batch of records from {@link SourceTask#poll()}. All of
* the records in that transaction will be discarded and will not appear in a committed transaction.
* However, offsets for that transaction will still be committed so than the records in that transaction
* are not reprocessed. If the data should instead be reprocessed, the task should not invoke this method
* and should instead throw an exception.
*/
void abortTransaction();
/**
* Requests a transaction abort after a source record is processed. The source record will be the
* last record in the aborted transaction. All of the records in that transaction will be discarded
* and will not appear in a committed transaction. However, offsets for that transaction will still
* be committed so that the records in that transaction are not reprocessed. If the data should be
* reprocessed, the task should not invoke this method and should instead throw an exception.
* @param record the record to abort the transaction after; may not be null.
*/
void abortTransaction(SourceRecord record);
}
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