com.tencent.devops.common.event.dispatcher.trace.TraceEventDispatcher.kt Maven / Gradle / Ivy

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/*
 * Tencent is pleased to support the open source community by making BK-CI 蓝鲸持续集成平台 available.
 *
 * Copyright (C) 2019 THL A29 Limited, a Tencent company.  All rights reserved.
 *
 * BK-CI 蓝鲸持续集成平台 is licensed under the MIT license.
 *
 * A copy of the MIT License is included in this file.
 *
 *
 * Terms of the MIT License:
 * ---------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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package com.tencent.devops.common.event.dispatcher.trace

import com.tencent.devops.common.event.annotation.Event
import com.tencent.devops.common.event.dispatcher.EventDispatcher
import com.tencent.devops.common.event.pojo.trace.ITraceEvent
import org.slf4j.LoggerFactory
import org.springframework.amqp.rabbit.core.RabbitTemplate

/**
 * 基于MQ实现的trace事件下发器
 *
 * @version 1.0
 */
class TraceEventDispatcher constructor(
    private val rabbitTemplate: RabbitTemplate
) : EventDispatcher {

    override fun dispatch(vararg events: ITraceEvent) {
        events.forEach { event ->
            try {
                val eventType = event::class.java.annotations.find { s -> s is Event } as Event
                rabbitTemplate.convertAndSend(eventType.exchange, eventType.routeKey, event) { message ->
                    // 事件中的变量指定
                    when {
                        event.delayMills > 0 -> message.messageProperties.setHeader("x-delay", event.delayMills)
                        eventType.delayMills > 0 -> // 事件类型固化默认值
                            message.messageProperties.setHeader("x-delay", eventType.delayMills)
                        else -> // 非延时消息的则8小时后过期，防止意外发送的消息无消费端ACK处理从而堆积过多消息导致MQ故障
                            message.messageProperties.expiration = "28800000"
                    }
                    message
                }
            } catch (ignored: Exception) {
                logger.error("[TRACE_MQ_SEVERE]Fail to dispatch the event($event)", ignored)
            }
        }
    }

    companion object {
        private val logger = LoggerFactory.getLogger(TraceEventDispatcher::class.java)
    }
}