org.apache.kafka.tools.consumer.LoggingMessageFormatter Maven / Gradle / Ivy
/*
* 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.tools.consumer;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.common.MessageFormatter;
import org.apache.kafka.common.record.TimestampType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.PrintStream;
import java.nio.charset.StandardCharsets;
import java.util.Map;
class LoggingMessageFormatter implements MessageFormatter {
private static final Logger LOG = LoggerFactory.getLogger(LoggingMessageFormatter.class);
private final DefaultMessageFormatter defaultWriter = new DefaultMessageFormatter();
@Override
public void configure(Map configs) {
defaultWriter.configure(configs);
}
@Override
public void writeTo(ConsumerRecord consumerRecord, PrintStream output) {
defaultWriter.writeTo(consumerRecord, output);
String timestamp = consumerRecord.timestampType() != TimestampType.NO_TIMESTAMP_TYPE
? consumerRecord.timestampType() + ":" + consumerRecord.timestamp() + ", "
: "";
String key = "key:" + (consumerRecord.key() == null ? "null " : new String(consumerRecord.key(), StandardCharsets.UTF_8) + ", ");
String value = "value:" + (consumerRecord.value() == null ? "null" : new String(consumerRecord.value(), StandardCharsets.UTF_8));
LOG.info(timestamp + key + value);
}
}