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-{{% /pageinfo %}} -## How to customize a Node +## 如何自定义节点 -There are times when we would like a Node to be customized to our needs. +有时候我们希望根据自己的需求自定义Node。 -For e.g., we may like to do some additional setup before a session begins execution and some clean-up after a session runs to completion. +例如，我们可能希望在会话开始执行前做一些额外的设置，在会话完成后做一些清理工作。 -Following steps can be followed for this: +可以按照以下步骤进行： -* Create a class that extends `org.openqa.selenium.grid.node.Node` -* Add a static method (this will be our factory method) to the newly created class whose signature looks like this: +* 创建一个类，继承自 `org.openqa.selenium.grid.node.Node` +* 在新建的类中添加一个静态方法（工厂方法），其签名如下： - `public static Node create(Config config)`. Here: + `public static Node create(Config config)`。其中： - * `Node` is of type `org.openqa.selenium.grid.node.Node` - * `Config` is of type `org.openqa.selenium.grid.config.Config` -* Within this factory method, include logic for creating your new Class. -* To wire in this new customized logic into the hub, start the node and pass in the fully qualified class name of the above class to the argument `--node-implementation` + * `Node` 类型为 `org.openqa.selenium.grid.node.Node` + * `Config` 类型为 `org.openqa.selenium.grid.config.Config` +* 在工厂方法中，包含创建新类的逻辑。 +* 要将自定义逻辑接入 hub，启动 node 时通过参数 `--node-implementation` 传入上述类的完整类名。 -Let's see an example of all this: +下面我们来看一个完整的示例： -### Custom Node as an uber jar +### 作为 uber jar 的自定义 Node -1. Create a sample project using your favourite build tool (**Maven**|**Gradle**). -2. Add the below dependency to your sample project. +1. 使用你喜欢的构建工具 (**Maven**|**Gradle**) 创建一个示例项目。 +2. 在项目中添加如下依赖： * [org.seleniumhq.selenium/selenium-grid](https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-grid) -3. Add your customized Node to the project. -4. Build an [uber jar](https://imagej.net/develop/uber-jars) to be able to start the Node using `java -jar` command. -5. Now start the Node using the command: +3. 将你的自定义 Node 添加到项目中。 +4. 构建一个 [uber jar](https://imagej.net/develop/uber-jars)，以便通过 `java -jar` 命令启动 Node。 +5. 现在使用如下命令启动 Node： ```bash java -jar custom_node-server.jar node \ --node-implementation org.seleniumhq.samples.DecoratedLoggingNode ``` -**Note:** If you are using Maven as a build tool, please prefer using [maven-shade-plugin](https://maven.apache.org/plugins/maven-shade-plugin) instead of [maven-assembly-plugin](https://maven.apache.org/plugins/maven-assembly-plugin) because maven-assembly plugin seems to have issues with being able to merge multiple Service Provider Interface files (`META-INF/services`) +**注意：** 如果你使用 Maven 作为构建工具， +建议使用 [maven-shade-plugin](https://maven.apache.org/plugins/maven-shade-plugin) +而不是 [maven-assembly-plugin](https://maven.apache.org/plugins/maven-assembly-plugin)， +因为 maven-assembly-plugin 在合并多个 Service Provider Interface 文件 (`META-INF/services`) +时可能存在问题。 -### Custom Node as a regular jar +### 作为普通 jar 的自定义 Node -1. Create a sample project using your favourite build tool (**Maven**|**Gradle**). -2. Add the below dependency to your sample project. +1. 使用你喜欢的构建工具 (**Maven**|**Gradle**) 创建一个示例项目。 +2. 在项目中添加如下依赖： * [org.seleniumhq.selenium/selenium-grid](https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-grid) -3. Add your customized Node to the project. -4. Build a jar of your project using your build tool. -5. Now start the Node using the command: +3. 将你的自定义 Node 添加到项目中。 +4. 使用构建工具构建项目 jar 包。 +5. 现在使用如下命令启动 Node： ```bash java -jar selenium-server-4.6.0.jar \ --ext custom_node-1.0-SNAPSHOT.jar node \ --node-implementation org.seleniumhq.samples.DecoratedLoggingNode ``` -Below is a sample that just prints some messages on to the console whenever there's an activity of interest (session created, session deleted, a webdriver command executed etc.,) on the Node. - +下面是一个示例：当Node有相关活动（会话创建、会话删除、WebDriver 命令执行等）时，仅在控制台打印一些消息。