kafka Callback 源码

  • 2022-10-20
  • 浏览 (501)

kafka Callback 代码

文件路径:/clients/src/main/java/org/apache/kafka/clients/producer/Callback.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.clients.producer;

/**
 * A callback interface that the user can implement to allow code to execute when the request is complete. This callback
 * will generally execute in the background I/O thread so it should be fast.
 */
public interface Callback {

    /**
     * A callback method the user can implement to provide asynchronous handling of request completion. This method will
     * be called when the record sent to the server has been acknowledged. When exception is not null in the callback,
     * metadata will contain the special -1 value for all fields. If topicPartition cannot be
     * choosen, a -1 value will be assigned.
     *
     * @param metadata The metadata for the record that was sent (i.e. the partition and offset). An empty metadata
     *                 with -1 value for all fields will be returned if an error occurred.
     * @param exception The exception thrown during processing of this record. Null if no error occurred.
     *                  Possible thrown exceptions include:
     *
     *                  Non-Retriable exceptions (fatal, the message will never be sent):
     *
     *                  InvalidTopicException
     *                  OffsetMetadataTooLargeException
     *                  RecordBatchTooLargeException
     *                  RecordTooLargeException
     *                  UnknownServerException
     *                  UnknownProducerIdException
     *                  InvalidProducerEpochException
     *
     *                  Retriable exceptions (transient, may be covered by increasing #.retries):
     *
     *                  CorruptRecordException
     *                  InvalidMetadataException
     *                  NotEnoughReplicasAfterAppendException
     *                  NotEnoughReplicasException
     *                  OffsetOutOfRangeException
     *                  TimeoutException
     *                  UnknownTopicOrPartitionException
     */
    void onCompletion(RecordMetadata metadata, Exception exception);
}

相关信息

kafka 源码目录

相关文章

kafka BufferExhaustedException 源码

kafka KafkaProducer 源码

kafka MockProducer 源码

kafka Partitioner 源码

kafka Producer 源码

kafka ProducerConfig 源码

kafka ProducerInterceptor 源码

kafka ProducerRecord 源码

kafka RecordMetadata 源码

kafka RoundRobinPartitioner 源码

0  赞