kafka ErrorLoggingCallback 源码
kafka ErrorLoggingCallback 代码
文件路径：/clients/src/main/java/org/apache/kafka/clients/producer/internals/ErrorLoggingCallback.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.internals;
import org.apache.kafka.clients.producer.Callback;
import org.apache.kafka.clients.producer.RecordMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.nio.charset.StandardCharsets;
public class ErrorLoggingCallback implements Callback {
private static final Logger log = LoggerFactory.getLogger(ErrorLoggingCallback.class);
private String topic;
private byte[] key;
private byte[] value;
private int valueLength;
private boolean logAsString;
public ErrorLoggingCallback(String topic, byte[] key, byte[] value, boolean logAsString) {
this.topic = topic;
this.key = key;
if (logAsString) {
this.value = value;
}
this.valueLength = value == null ? -1 : value.length;
this.logAsString = logAsString;
}
public void onCompletion(RecordMetadata metadata, Exception e) {
if (e != null) {
String keyString = (key == null) ? "null" :
logAsString ? new String(key, StandardCharsets.UTF_8) : key.length + " bytes";
String valueString = (valueLength == -1) ? "null" :
logAsString ? new String(value, StandardCharsets.UTF_8) : valueLength + " bytes";
log.error("Error when sending message to topic {} with key: {}, value: {} with error:",
topic, keyString, valueString, e);
}
}
}
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