com.github.thierrysquirrel.annotation.OrderMessage Maven / Gradle / Ivy
/**
* Copyright 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
*
* 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 com.github.thierrysquirrel.annotation;
import java.lang.annotation.*;
/**
* ClassName: OrderMessage
* Description:
* date: 2019/4/27 21:36
*
* @author ThierrySquirrel
* @since JDK 1.8
*/
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Documented
public @interface OrderMessage {
/**
* Message 所属的 Topic
*
* @return String
*/
String topic() default "";
/**
* 订阅指定 Topic 下的 Tags：
* 1. * 表示订阅所有消息
* 2. TagA || TagB || TagC 表示订阅 TagA 或 TagB 或 TagC 的消息
*
* @return String
*/
String tag() default "*";
/**
* 分区顺序消息中区分不同分区的关键字段，sharding key 于普通消息的 key 是完全不同的概念。
* 全局顺序消息，该字段可以设置为任意非空字符串。
*
* @return String
*/
String shardingKey() default "shardingKey";
}