org.springframework.kafka.listener.adapter.AbstractFilteringMessageListener Maven / Gradle / Ivy
/*
* Copyright 2016-2019 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.kafka.listener.adapter;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.util.Assert;
/**
* An abstract message listener adapter that implements record filter logic
* via a {@link RecordFilterStrategy}.
*
* @param the key type.
* @param the value type.
* @param the delegate type.
*
* @author Gary Russell
*
*/
public abstract class AbstractFilteringMessageListener
extends AbstractDelegatingMessageListenerAdapter {
private final RecordFilterStrategy recordFilterStrategy;
protected AbstractFilteringMessageListener(T delegate, RecordFilterStrategy recordFilterStrategy) {
super(delegate);
Assert.notNull(recordFilterStrategy, "'recordFilterStrategy' cannot be null");
this.recordFilterStrategy = recordFilterStrategy;
}
protected boolean filter(ConsumerRecord consumerRecord) {
return this.recordFilterStrategy.filter(consumerRecord);
}
}