kafka UUIDSerializer 源码
kafka UUIDSerializer 代码
文件路径：/clients/src/main/java/org/apache/kafka/common/serialization/UUIDSerializer.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.errors.SerializationException;
import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;
import java.util.Map;
import java.util.UUID;
/**
* We are converting UUID to String before serializing. String encoding defaults to UTF8 and can be customized by setting
* the property key.deserializer.encoding, value.deserializer.encoding or deserializer.encoding. The first two take precedence over the last.
*/
public class UUIDSerializer implements Serializer<UUID> {
private String encoding = StandardCharsets.UTF_8.name();
@Override
public void configure(Map<String, ?> configs, boolean isKey) {
String propertyName = isKey ? "key.serializer.encoding" : "value.serializer.encoding";
Object encodingValue = configs.get(propertyName);
if (encodingValue == null)
encodingValue = configs.get("serializer.encoding");
if (encodingValue instanceof String)
encoding = (String) encodingValue;
}
@Override
public byte[] serialize(String topic, UUID data) {
try {
if (data == null)
return null;
else
return data.toString().getBytes(encoding);
} catch (UnsupportedEncodingException e) {
throw new SerializationException("Error when serializing UUID to byte[] due to unsupported encoding " + encoding);
}
}
}
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