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Easyscheduler简介 |
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自定义任务插件文档 |
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<!-- Title --> |
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<h1> |
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<i class="fa fa-circle-o-notch fa-spin"></i> |
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<a href="." >自定义任务插件文档</a> |
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<h2 id="任务插件开发">任务插件开发</h2> |
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<p>提醒:目前任务插件开发暂不支持热部署</p> |
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<h3 id="基于shell的任务">基于SHELL的任务</h3> |
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<h4 id="基于yarn的计算（参见mapreducetask）">基于YARN的计算（参见MapReduceTask）</h4> |
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<ul> |
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<li>需要在 <strong>cn.escheduler.server.worker.task</strong> 下的 <strong>TaskManager</strong> 类中创建自定义任务(也需在TaskType注册对应的任务类型)</li> |
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<li>需要继承<strong>cn.escheduler.server.worker.task</strong> 下的 <strong>AbstractYarnTask</strong></li> |
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<li>构造方法调度 <strong>AbstractYarnTask</strong> 构造方法</li> |
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<li>继承 <strong>AbstractParameters</strong> 自定义任务参数实体</li> |
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<li>重写 <strong>AbstractTask</strong> 的 <strong>init</strong> 方法中解析<strong>自定义任务参数</strong></li> |
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<li>重写 <strong>buildCommand</strong> 封装command</li> |
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</ul> |
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<h4 id="基于非yarn的计算（参见shelltask）">基于非YARN的计算（参见ShellTask）</h4> |
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<ul> |
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<li><p>需要在 <strong>cn.escheduler.server.worker.task</strong> 下的 <strong>TaskManager</strong> 中创建自定义任务</p> |
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</li> |
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<li><p>需要继承<strong>cn.escheduler.server.worker.task</strong> 下的 <strong>AbstractTask</strong></p> |
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</li> |
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<li><p>构造方法中实例化 <strong>ShellCommandExecutor</strong></p> |
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<pre><code>public ShellTask(TaskProps props, Logger logger) { |
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super(props, logger); |
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this.taskDir = props.getTaskDir(); |
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this.processTask = new ShellCommandExecutor(this::logHandle, |
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props.getTaskDir(), props.getTaskAppId(), |
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props.getTenantCode(), props.getEnvFile(), props.getTaskStartTime(), |
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props.getTaskTimeout(), logger); |
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this.processDao = DaoFactory.getDaoInstance(ProcessDao.class); |
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} |
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</code></pre><p>传入自定义任务的 <strong>TaskProps</strong>和自定义<strong>Logger</strong>，TaskProps 封装了任务的信息，Logger分装了自定义日志信息</p> |
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</li> |
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<li><p>继承 <strong>AbstractParameters</strong> 自定义任务参数实体</p> |
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</li> |
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<li><p>重写 <strong>AbstractTask</strong> 的 <strong>init</strong> 方法中解析<strong>自定义任务参数实体</strong></p> |
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</li> |
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<li><p>重写 <strong>handle</strong> 方法，调用 <strong>ShellCommandExecutor</strong> 的 <strong>run</strong> 方法，第一个参数传入自己的<strong>command</strong>，第二个参数传入 ProcessDao，设置相应的 <strong>exitStatusCode</strong></p> |
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</li> |
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</ul> |
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<h3 id="基于非shell的任务（参见sqltask）">基于非SHELL的任务（参见SqlTask）</h3> |
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<ul> |
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<li>需要在 <strong>cn.escheduler.server.worker.task</strong> 下的 <strong>TaskManager</strong> 中创建自定义任务</li> |
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<li>需要继承<strong>cn.escheduler.server.worker.task</strong> 下的 <strong>AbstractTask</strong></li> |
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<li>继承 <strong>AbstractParameters</strong> 自定义任务参数实体</li> |
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<li>构造方法或者重写 <strong>AbstractTask</strong> 的 <strong>init</strong> 方法中，解析自定义任务参数实体</li> |
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<li>重写 <strong>handle</strong> 方法实现业务逻辑并设置相应的<strong>exitStatusCode</strong></li> |
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</ul> |
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