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Example code of xd/queue-consumers-manager

Informations about the package queue-consumers-manager

consumers manager

一个简单的队列消费者进程管理轮子，主要为了解决平滑重启、平滑关闭、进程自动平滑重启等问题

原理

本想用信号量来控制进程，实测此方案会出现业务闪断（在收到信号量时，php会断掉当前正在阻塞的语句，可能会导致调用api或执行sql等阻塞操作的中断），因此本项目采用了文件的方式来控制进程。进程自重启是为了防止进程内存泄露的问题，您可以配置一个进程最多消费多少次队列消息后重启，进程会记录处理消费数量，达到最大值便会重新拉起一个进程并退出当前进程，由于新拉起的进程是直接使用的exec函数，且直接执行php命令，因此需要开放exec函数且php已存在于环境变量中

依赖

php >= 5.4 (理论上是>=5.3即可，我没有此环境且版本太老就没验证)
posix 扩展 此扩展不是必须的，只是在记录运行日志时会详细到某一个pid

安装

composer地址：https://packagist.org/packages/xd/queue-consumers-manager

权限

由于采用了文件方式来控制进程，所以需要给目录data读写权限

示例

  1. 创建一个消费者

  2. 启动
    执行对应vendor包中的start.sh, 第三个参数为消费者脚本路径（目前只支持绝对路径），第四个参数为开启的进程个数，运行后中途可以随意再增加，运行日志的名称为consumer脚本的文件名+.log，位于/var/log目录下

    输出

  3. 查看运行状态
    执行对应vendor包中的status.sh, 第三个参数为消费者脚本路径（目前只支持绝对路径）

    输出

  4. 关闭
    执行对应vendor包中的shutdown.sh, 第三个参数为消费者脚本路径（目前只支持绝对路径）

    输出

All versions of queue-consumers-manager with dependencies

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Package Version
Requires php Version >=5.4.0
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