Examples with MasterEnvironmentRunnableContext io.cdap.cdap.master.spi.environment.MasterEnvironmentRunnableContext used on opensource projects

Example 1 with MasterEnvironmentRunnableContext

use of io.cdap.cdap.master.spi.environment.MasterEnvironmentRunnableContext in project cdap by caskdata.

the class MasterEnvironmentMain method doMain.

/**
 * The actual main method that get invoke through reflection from the {@link #main(String[])} method.
 */
@SuppressWarnings("unused")
public static void doMain(String[] args) throws Exception {
    CountDownLatch shutdownLatch = new CountDownLatch(1);
    try {
        // System wide setup
        Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler());
        // Intercept JUL loggers
        SLF4JBridgeHandler.removeHandlersForRootLogger();
        SLF4JBridgeHandler.install();
        EnvironmentOptions options = new EnvironmentOptions();
        String[] runnableArgs = OptionsParser.init(options, args, MasterEnvironmentMain.class.getSimpleName(), ProjectInfo.getVersion().toString(), System.out).toArray(new String[0]);
        String runnableClass = options.getRunnableClass();
        if (runnableClass == null) {
            throw new IllegalArgumentException("Missing runnable class name");
        }
        CConfiguration cConf = CConfiguration.create();
        SConfiguration sConf = SConfiguration.create();
        if (options.getExtraConfPath() != null) {
            cConf.addResource(new File(options.getExtraConfPath(), "cdap-site.xml").toURI().toURL());
            sConf.addResource(new File(options.getExtraConfPath(), "cdap-security.xml").toURI().toURL());
        }
        SecurityUtil.loginForMasterService(cConf);
        Configuration hConf = new Configuration();
        // Creates the master environment and load the MasterEnvironmentRunnable class from it.
        MasterEnvironment masterEnv = MasterEnvironments.setMasterEnvironment(MasterEnvironments.create(cConf, options.getEnvProvider()));
        MasterEnvironmentContext context = MasterEnvironments.createContext(cConf, hConf, masterEnv.getName());
        masterEnv.initialize(context);
        try {
            Class<?> cls = masterEnv.getClass().getClassLoader().loadClass(runnableClass);
            if (!MasterEnvironmentRunnable.class.isAssignableFrom(cls)) {
                throw new IllegalArgumentException("Runnable class " + runnableClass + " is not an instance of " + MasterEnvironmentRunnable.class);
            }
            RemoteClientFactory remoteClientFactory = new RemoteClientFactory(masterEnv.getDiscoveryServiceClientSupplier().get(), getInternalAuthenticator(cConf), getRemoteAuthenticator(cConf));
            MasterEnvironmentRunnableContext runnableContext = new DefaultMasterEnvironmentRunnableContext(context.getLocationFactory(), remoteClientFactory);
            @SuppressWarnings("unchecked") MasterEnvironmentRunnable runnable = masterEnv.createRunnable(runnableContext, (Class<? extends MasterEnvironmentRunnable>) cls);
            AtomicBoolean completed = new AtomicBoolean();
            Runtime.getRuntime().addShutdownHook(new Thread(() -> {
                if (!completed.get()) {
                    runnable.stop();
                    Uninterruptibles.awaitUninterruptibly(shutdownLatch, 30, TimeUnit.SECONDS);
                }
                Optional.ofNullable(tokenManager).ifPresent(TokenManager::stopAndWait);
            }));
            runnable.run(runnableArgs);
            completed.set(true);
        } finally {
            masterEnv.destroy();
        }
    } catch (Exception e) {
        LOG.error("Failed to execute with arguments {}", Arrays.toString(args), e);
        throw e;
    } finally {
        shutdownLatch.countDown();
    }
}