kafka SourceTaskContext 源码

2022-10-20
浏览 (475)

kafka SourceTaskContext 代码

文件路径：/connect/api/src/main/java/org/apache/kafka/connect/source/SourceTaskContext.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;

import org.apache.kafka.connect.storage.OffsetStorageReader;

import java.util.Map;

/**
 * SourceTaskContext is provided to SourceTasks to allow them to interact with the underlying
 * runtime.
 */
public interface SourceTaskContext {
    /**
     * Get the Task configuration.  This is the latest configuration and may differ from that passed on startup.
     *
     * For example, this method can be used to obtain the latest configuration if an external secret has changed,
     * and the configuration is using variable references such as those compatible with
     * {@link org.apache.kafka.common.config.ConfigTransformer}.
     */
    Map<String, String> configs();

    /**
     * Get the OffsetStorageReader for this SourceTask.
     */
    OffsetStorageReader offsetStorageReader();

    /**
     * Get a {@link TransactionContext} that can be used to define producer transaction boundaries
     * when exactly-once support is enabled for the connector.
     *
     * <p>This method was added in Apache Kafka 3.2. Source tasks that use this method but want to
     * maintain backward compatibility so they can also be deployed to older Connect runtimes
     * should guard the call to this method with a try-catch block, since calling this method will result in a
     * {@link NoSuchMethodException} or {@link NoClassDefFoundError} when the source connector is deployed to
     * Connect runtimes older than Kafka 3.2. For example:
     * <pre>
     *     TransactionContext transactionContext;
     *     try {
     *         transactionContext = context.transactionContext();
     *     } catch (NoSuchMethodError | NoClassDefFoundError e) {
     *         transactionContext = null;
     *     }
     * </pre>
     *
     * @return the transaction context, or null if the connector was not configured to specify transaction boundaries
     * @since 3.3
     */
    default TransactionContext transactionContext() {
        return null;
    }
}

相关信息

kafka 源码目录

相关文章

kafka ConnectorTransactionBoundaries 源码

kafka ExactlyOnceSupport 源码

kafka SourceConnector 源码

kafka SourceConnectorContext 源码

kafka SourceRecord 源码

kafka SourceTask 源码

kafka TransactionContext 源码

0 赞

所属分类： 大数据
本文标签： 大数据
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/f0220df33bee4943aa341f4a3b76207d

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...