spring-kafka DestinationTopicProcessor 源码
spring-kafka DestinationTopicProcessor 代码
文件路径：/spring-kafka/src/main/java/org/springframework/kafka/retrytopic/DestinationTopicProcessor.java
/*
* Copyright 2018-2021 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.retrytopic;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Consumer;
/**
*
* The {@link DestinationTopicProcessor} creates and registers the
* {@link DestinationTopic} instances in the provided {@link Context}, also
* providing callback interfaces to be called upon the context properties.
*
* @author Tomaz Fernandes
* @since 2.7
*
*/
public interface DestinationTopicProcessor {
/**
* Process the destination properties.
* @param destinationPropertiesProcessor the processor.
* @param context the context.
*/
void processDestinationTopicProperties(Consumer<DestinationTopic.Properties> destinationPropertiesProcessor, Context context);
/**
* Process the registered destinations.
* @param topicsConsumer the consumer.
* @param context the context.
*/
void processRegisteredDestinations(Consumer<Collection<String>> topicsConsumer, Context context);
/**
* Register the destination topic.
* @param mainTopicName the main topic name.
* @param destinationTopicName the destination topic name.
* @param destinationTopicProperties the destination topic properties.
* @param context the context.
*/
void registerDestinationTopic(String mainTopicName, String destinationTopicName,
DestinationTopic.Properties destinationTopicProperties, Context context);
class Context {
protected final Map<String, List<DestinationTopic>> destinationsByTopicMap; // NOSONAR
protected final List<DestinationTopic.Properties> properties; // NOSONAR
public Context(List<DestinationTopic.Properties> properties) {
this.destinationsByTopicMap = new HashMap<>();
this.properties = properties;
}
}
}
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