如何在 OSGi 框架停止之前销毁所有 OSGi 蓝图组件？答案

【问题标题】：How can I destroy all OSGi blueprint components before the OSGi framework is stopped?如何在 OSGi 框架停止之前销毁所有 OSGi 蓝图组件？
【发布时间】：2018-10-15 16:53:04
【问题描述】：

如果我停止 OSGi 框架，OSGi 蓝图组件不会被销毁（不会调用销毁方法）。为什么会这样，我该如何摧毁它们。我有自己的 OSGi 启动器实现。我正在使用关闭挂钩，然后停止 OSGi 框架：

Runtime.getRuntime().addShutdownHook(new Thread() {
    @Override
    public void run() {
        Launcher.logService.log(LogService.LOG_WARNING, "HANDLE SHUTDOWN");
        if(Launcher.framework != null) {
            try {
                Launcher.framework.stop();
            } catch (BundleException e) {
                Launcher.logService.log(LogService.LOG_ERROR, "Shutdown" + ((Launcher.framework != null) ? " of " + Launcher.framework.getSymbolicName() + " " : " ") + "failed!", e);
                System.exit(-1);
            }
        }
    }
});

【问题讨论】：

标签： java osgi blueprint-osgi

【解决方案1】：

我们应该等待框架停止。

Runtime.getRuntime().addShutdownHook(new Thread() {
    @Override
    public void run() {
        Launcher.logService.log(LogService.LOG_WARNING, "HANDLE SHUTDOWN");
        if(Launcher.framework != null) {
            try {
                Launcher.framework.stop();
                Launcher.framework.waitForStop(0); // !!!
            } catch (BundleException e) {
                Launcher.logService.log(LogService.LOG_ERROR, "Shutdown" + ((Launcher.framework != null) ? " of " + Launcher.framework.getSymbolicName() + " " : " ") + "failed!", e);
                System.exit(-1);
            }
        }
    }
});

【讨论】：