spring-kafka TopicPartition 源码
spring-kafka TopicPartition 代码
文件路径：/spring-kafka/src/main/java/org/springframework/kafka/annotation/TopicPartition.java
/*
* Copyright 2016-2020 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.annotation;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Used to add topic/partition information to a {@code KafkaListener}.
*
* @author Gary Russell
* @author Artem Bilan
*
*/
@Target({})
@Retention(RetentionPolicy.RUNTIME)
public @interface TopicPartition {
/**
* The topic to listen on.
* @return the topic to listen on. Property place holders
* and SpEL expressions are supported, which must resolve
* to a String.
*/
String topic();
/**
* The partitions within the topic. Partitions specified here can't be duplicated in
* {@link #partitionOffsets()}. Each string can contain a comma-delimited list of
* partitions, or ranges of partitions (e.g. {@code 0-5, 7, 10-15}.
* @return the partitions within the topic. Property place holders and SpEL
* expressions are supported, which must resolve to Integers (or Strings that can be
* parsed as Integers).
*/
String[] partitions() default {};
/**
* The partitions with initial offsets within the topic. There must only be one
* instance of {@link PartitionOffset} if its 'partition' property is '*'.
* Partitions specified here can't be duplicated in the {@link #partitions()}.
* @return the {@link PartitionOffset} array.
*/
PartitionOffset[] partitionOffsets() default {};
}
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