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I want to automatically invoke the Karaf "dev:watch" command if I detect that I'm running in a dev environment. I've considered adding dev:watch * directly to etc/shell.init.script but I don't want it to run unconditionally. So, I'm considering creating a simple service that checks a Java property (something simple like -Ddevelopment=true) and invokes org.apache.karaf.shell.dev.Watch itself. I think I can ask OSGi for a Function instance with (&(osgi.command.function=watch)(osgi.command.scope=dev)) but then I need to create a mock CommandSession just to invoke it. That just seems too complicated. Is there a better approach?

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从 Apache Karaf 3.0.0 开始，大多数命令都由 OSGi 服务支持。

例如，bundle:watch 命令正在使用服务“ org.apache.karaf.bundle.core.BundleWatcher”。

所以只要绑定这个服务，就可以很方便的调用 bundle:watch 功能了。

于 2015-08-07T12:02:24.563 回答
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这个问题已经有一段时间了，但我会回答。

您需要使用 CommandSession 类，这并非易事。这篇博文可以指导你。它与 Pax Exam 有关，但可以应用于任何情况。还有更多选择，例如使用远程 SSH 客户端，甚至更好的远程 JXM 管理控制台（参考）。

于 2014-05-28T11:01:18.663 回答
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init 脚本还可用于测试条件并在满足该条件时运行命令，因此无需自己创建命令会话。

于 2014-06-12T03:33:58.957 回答
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Karaf 消息来源本身揭示了一个答案：

在用于集成测试 Karaf 本身的 KarafTestSupport 类中（参见https://git-wip-us.apache.org/repos/asf?p=karaf.git;a=blob;f=itests/src/test/ java/org/apache/karaf/itests/KarafTestSupport.java;h=ebdea09ae8c6d926c8e4ac1fae6672f2c00a53dc;hb=HEAD）

相关方法启动：

/**
 * Executes a shell command and returns output as a String.
 * Commands have a default timeout of 10 seconds.
 *
 * @param command    The command to execute.
 * @param timeout    The amount of time in millis to wait for the command to execute.
 * @param silent     Specifies if the command should be displayed in the screen.
 * @param principals The principals (e.g. RolePrincipal objects) to run the command under
 * @return
 */
protected String executeCommand(final String command, final Long timeout, final Boolean silent, final Principal ... principals) {
    waitForCommandService(command);

    String response;
    final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    final PrintStream printStream = new PrintStream(byteArrayOutputStream);
    final SessionFactory sessionFactory = getOsgiService(SessionFactory.class);
    final Session session = sessionFactory.create(System.in, printStream, System.err);
    //
    //
    //
    // Snip
于 2014-11-21T22:50:22.030 回答