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在系统运行过程中执行自定义操作

功能概述

Wyn 是一个高度可定制的系统，客户可以在系统运行过程中执行一些可执行程序或脚本文件，以完成某些需求。

比如在Wyn 的所有服务启动后，自动注册 Wyn 许可证；在 Wyn 的所有服务启动后，自动刷新不可用的缓存；在 Wyn 的所有服务停止后备份数据库数据或清理临时文件等等。

接下来为您介绍具体的操作方法（集群版专用）。

操作说明

执行阶段描述了系统生命周期中的某个阶段，一旦系统进入指定阶段，自定义动作就会被执行。

根据目前产品的设计，我们定义了四个阶段来执行自定义操作，它们分别是：BeforeStartingServices、AfterServicesStarted、BeforeStoppingServices和AfterServicesStopped。

“ BeforeStartingServices ”阶段表示Wyn Monitor 服务已准备好启动所有服务。
“ AfterServicesStarted ”阶段表示所有服务都已启动。
“ BeforeStoppingServices ”阶段表示 Wyn Monitor 将在 Wyn Monitor 服务退出之前停止所有服务。
“ AfterServicesStopped ”阶段表示Wyn Monitor 服务在退出前已经终止了所有服务。

各阶段流程图如下图所示：

具体操作

具体操作方式是将自定义操作添加到配置文件Wyn.conf （存在于目录wyn_installation_path/Monitor/conf/中），从而传递给 Wyn Monitor服务，Wyn Monitor 服务负责执行这些自定义操作。

包含自定义操作的配置文件示例如下所示：

<?xml version="1.0" encoding="utf-8"?>
<SystemConfig xmlns:sys="https://extendedxmlserializer.github.io/system" xmlns="clr-namespace:ConfigMigration.Configuration.V60;assembly=ConfigMigration">
  <Version>6.0</Version>
  <GlobalSettings>...</GlobalSettings>
  <Services>...</Services>
  <CustomActions>
    <CustomAction>
      <Name>testing-action</Name>
      <Description>An simple custom action for testing.</Description>
      <ExecutionStage>BeforeStartingServices/AfterServicesStarted/BeforeStoppingServices/AfterServicesStopped</ExecutionStage>
      <Process>dotnet</Process>
      <WorkingDirectory>/var/tmp/testing-action</WorkingDirectory>
      <Arguments>/opt/testing-action/testing-action.dll param1 param2 &quot;param 3&quot;</Arguments>
    </CustomAction>
  </CustomActions>
</SystemConfig>

是以<CustomActions>...</CustomActions> 为标记，其中可包含多个<CustomAction>...</CustomAction>。

示例

以下为两个简单的示例，每个配置文件包含 4 个自定义操作，用于在不同阶段将一些调试日志写入日志文件。请参考。

Wyn-windows.conf

Wyn-linux.conf