kafka Serializer 源码

  • 2022-10-20
  • 浏览 (437)

kafka Serializer 代码

文件路径:/clients/src/main/java/org/apache/kafka/common/serialization/Serializer.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.common.serialization;

import org.apache.kafka.common.header.Headers;

import java.io.Closeable;
import java.util.Map;

/**
 * An interface for converting objects to bytes.
 *
 * A class that implements this interface is expected to have a constructor with no parameter.
 * <p>
 * Implement {@link org.apache.kafka.common.ClusterResourceListener} to receive cluster metadata once it's available. Please see the class documentation for ClusterResourceListener for more information.
 *
 * @param <T> Type to be serialized from.
 */
public interface Serializer<T> extends Closeable {

    /**
     * Configure this class.
     * @param configs configs in key/value pairs
     * @param isKey whether is for key or value
     */
    default void configure(Map<String, ?> configs, boolean isKey) {
        // intentionally left blank
    }

    /**
     * Convert {@code data} into a byte array.
     *
     * @param topic topic associated with data
     * @param data typed data
     * @return serialized bytes
     */
    byte[] serialize(String topic, T data);

    /**
     * Convert {@code data} into a byte array.
     *
     * @param topic topic associated with data
     * @param headers headers associated with the record
     * @param data typed data
     * @return serialized bytes
     */
    default byte[] serialize(String topic, Headers headers, T data) {
        return serialize(topic, data);
    }

    /**
     * Close this serializer.
     * <p>
     * This method must be idempotent as it may be called multiple times.
     */
    @Override
    default void close() {
        // intentionally left blank
    }
}

相关信息

kafka 源码目录

相关文章

kafka ByteArrayDeserializer 源码

kafka ByteArraySerializer 源码

kafka ByteBufferDeserializer 源码

kafka ByteBufferSerializer 源码

kafka BytesDeserializer 源码

kafka BytesSerializer 源码

kafka Deserializer 源码

kafka DoubleDeserializer 源码

kafka DoubleSerializer 源码

kafka FloatDeserializer 源码

0  赞