Package org.apache.twill.api

Examples of org.apache.twill.api.EventHandlerSpecification

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  }

  private EventHandler createEventHandler(TwillSpecification twillSpec) {
    try {
      // Should be able to load by this class ClassLoader, as they packaged in the same jar.
      EventHandlerSpecification handlerSpec = twillSpec.getEventHandler();

      Class<?> handlerClass = getClass().getClassLoader().loadClass(handlerSpec.getClassName());
      Preconditions.checkArgument(EventHandler.class.isAssignableFrom(handlerClass),
                                  "Class {} does not implements {}",
                                  handlerClass, EventHandler.class.getName());
      return Instances.newInstance((Class<? extends EventHandler>) handlerClass);
    } catch (Exception e) {
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    // Serialize into a local temp file.
    LOG.debug("Create and copy {}", Constants.Files.TWILL_SPEC);
    Location location = createTempLocation(Constants.Files.TWILL_SPEC);
    Writer writer = new OutputStreamWriter(location.getOutputStream(), Charsets.UTF_8);
    try {
      EventHandlerSpecification eventHandler = spec.getEventHandler();
      if (eventHandler == null) {
        eventHandler = new LogOnlyEventHandler().configure();
      }

      TwillSpecificationAdapter.create().toJson(
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    // Serialize into a local temp file.
    LOG.debug("Create and copy {}", Constants.Files.TWILL_SPEC);
    Location location = createTempLocation(Constants.Files.TWILL_SPEC);
    Writer writer = new OutputStreamWriter(location.getOutputStream(), Charsets.UTF_8);
    try {
      EventHandlerSpecification eventHandler = spec.getEventHandler();
      if (eventHandler == null) {
        eventHandler = new LogOnlyEventHandler().configure();
      }

      TwillSpecificationAdapter.create().toJson(
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    this.className = className;
    this.configs = configs;
  }

  public DefaultEventHandlerSpecification(EventHandler eventHandler) {
    EventHandlerSpecification spec = eventHandler.configure();
    this.className = eventHandler.getClass().getName();
    this.configs = ImmutableMap.copyOf(spec.getConfigs());
  }
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    json.addProperty("name", src.getName());
    json.add("runnables", context.serialize(src.getRunnables(),
                                            new TypeToken<Map<String, RuntimeSpecification>>() { }.getType()));
    json.add("orders", context.serialize(src.getOrders(),
                                         new TypeToken<List<TwillSpecification.Order>>() { }.getType()));
    EventHandlerSpecification eventHandler = src.getEventHandler();
    if (eventHandler != null) {
      json.add("handler", context.serialize(eventHandler, EventHandlerSpecification.class));
    }

    return json;
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      jsonObj.get("runnables"), new TypeToken<Map<String, RuntimeSpecification>>() { }.getType());
    List<TwillSpecification.Order> orders = context.deserialize(
      jsonObj.get("orders"), new TypeToken<List<TwillSpecification.Order>>() { }.getType());

    JsonElement handler = jsonObj.get("handler");
    EventHandlerSpecification eventHandler = null;
    if (handler != null && !handler.isJsonNull()) {
      eventHandler = context.deserialize(handler, EventHandlerSpecification.class);
    }

    return new DefaultTwillSpecification(name, runnables, orders, eventHandler);
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  }

  private EventHandler createEventHandler(TwillSpecification twillSpec) {
    try {
      // Should be able to load by this class ClassLoader, as they packaged in the same jar.
      EventHandlerSpecification handlerSpec = twillSpec.getEventHandler();

      Class<?> handlerClass = getClass().getClassLoader().loadClass(handlerSpec.getClassName());
      Preconditions.checkArgument(EventHandler.class.isAssignableFrom(handlerClass),
                                  "Class {} does not implements {}",
                                  handlerClass, EventHandler.class.getName());
      return Instances.newInstance((Class<? extends EventHandler>) handlerClass);
    } catch (Exception e) {
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  }

  private EventHandler createEventHandler(TwillSpecification twillSpec) {
    try {
      // Should be able to load by this class ClassLoader, as they packaged in the same jar.
      EventHandlerSpecification handlerSpec = twillSpec.getEventHandler();

      Class<?> handlerClass = getClass().getClassLoader().loadClass(handlerSpec.getClassName());
      Preconditions.checkArgument(EventHandler.class.isAssignableFrom(handlerClass),
                                  "Class {} does not implements {}",
                                  handlerClass, EventHandler.class.getName());
      return Instances.newInstance((Class<? extends EventHandler>) handlerClass);
    } catch (Exception e) {
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Related Classes of org.apache.twill.api.EventHandlerSpecification

  • org.apache.twill.internal.appmaster.ApplicationMasterService
  • org.apache.twill.internal.DefaultEventHandlerSpecification
  • org.apache.twill.internal.json.TwillSpecificationCodec
  • org.apache.twill.yarn.YarnTwillPreparer
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