spring-kafka KafkaListenerEndpointAdapter 源码

2022-08-16
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spring-kafka KafkaListenerEndpointAdapter 代码

文件路径：/spring-kafka/src/main/java/org/springframework/kafka/config/KafkaListenerEndpointAdapter.java

/*
 * Copyright 2018-2019 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.config;

import java.util.Collection;
import java.util.Collections;
import java.util.regex.Pattern;

import org.springframework.kafka.listener.MessageListenerContainer;
import org.springframework.kafka.support.TopicPartitionOffset;
import org.springframework.kafka.support.converter.MessageConverter;
import org.springframework.lang.Nullable;

/**
 * Adapter to avoid having to implement all methods.
 *
 * @author Gary Russell
 * @since 2.2
 *
 */
class KafkaListenerEndpointAdapter implements KafkaListenerEndpoint {

	KafkaListenerEndpointAdapter() {
	}

	@Nullable
	@Override
	public String getId() {
		return null;
	}

	@Nullable
	@Override
	public String getGroupId() {
		return null;
	}

	@Nullable
	@Override
	public String getGroup() {
		return null;
	}

	@Nullable
	@Override
	public Collection<String> getTopics() {
		return Collections.emptyList();
	}

	@Nullable
	@Override
	public TopicPartitionOffset[] getTopicPartitionsToAssign() {
		return new TopicPartitionOffset[0];
	}

	@Nullable
	@Override
	public Pattern getTopicPattern() {
		return null;
	}

	@Nullable
	@Override
	public String getClientIdPrefix() {
		return null;
	}

	@Nullable
	@Override
	public Integer getConcurrency() {
		return null;
	}

	@Nullable
	@Override
	public Boolean getAutoStartup() { // NOSONAR
		return null; // NOSONAR null check by caller
	}

	@Override
	public void setupListenerContainer(MessageListenerContainer listenerContainer,
			@Nullable MessageConverter messageConverter) {
	}

	@Override
	public boolean isSplitIterables() {
		return true;
	}

}

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本文标签： Java Spring
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