kafka DeserializationExceptionHandler 源码
kafka DeserializationExceptionHandler 代码
文件路径：/streams/src/main/java/org/apache/kafka/streams/errors/DeserializationExceptionHandler.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.streams.errors;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.common.Configurable;
import org.apache.kafka.streams.processor.ProcessorContext;
/**
* Interface that specifies how an exception from source node deserialization
* (e.g., reading from Kafka) should be handled.
*/
public interface DeserializationExceptionHandler extends Configurable {
/**
* Inspect a record and the exception received.
* <p>
* Note, that the passed in {@link ProcessorContext} only allows to access metadata like the task ID.
* However, it cannot be used to emit records via {@link ProcessorContext#forward(Object, Object)};
* calling {@code forward()} (and some other methods) would result in a runtime exception.
*
* @param context processor context
* @param record record that failed deserialization
* @param exception the actual exception
*/
@SuppressWarnings("deprecation") // Old PAPI. Needs to be migrated.
DeserializationHandlerResponse handle(final ProcessorContext context,
final ConsumerRecord<byte[], byte[]> record,
final Exception exception);
/**
* Enumeration that describes the response from the exception handler.
*/
enum DeserializationHandlerResponse {
/* continue with processing */
CONTINUE(0, "CONTINUE"),
/* fail the processing and stop */
FAIL(1, "FAIL");
/** an english description of the api--this is for debugging and can change */
public final String name;
/** the permanent and immutable id of an API--this can't change ever */
public final int id;
DeserializationHandlerResponse(final int id, final String name) {
this.id = id;
this.name = name;
}
}
}
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