Package org.apache.hadoop.service

Examples of org.apache.hadoop.service.Service

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    }
  }

  protected void addIfService(Object object, boolean addDispatcher) {
    if (object instanceof Service) {
      Service service = (Service) object;
      ServiceWithDependency sd = new ServiceWithDependency(service);
      services.put(service, sd);
      if(addDispatcher) {
        addIfServiceDependency(service, dispatcher);
      }
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    }
  }

  protected void addIfServiceDependency(Object object, Object dependency) {
    if (object instanceof Service && dependency instanceof Service) {
      Service service = (Service) object;
      Service dependencyService = (Service) dependency;
      ServiceWithDependency sd = services.get(service);
      sd.dependencies.add(dependencyService);
      dependencyService.registerServiceListener(sd);
    }
  }
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    for (ServiceWithDependency sd : services.values()) {
      serviceList.add(sd.service);
    }
    Exception firstException = null;
    for (int i = services.size() - 1; i >= 0; i--) {
      Service service = serviceList.get(i);
      if (LOG.isDebugEnabled()) {
        LOG.debug("Stopping service : " + service);
      }
      Exception ex = ServiceOperations.stopQuietly(LOG, service);
      if (ex != null && firstException == null) {
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    return newDag;
  } // end createDag()

  protected void addIfService(Object object, boolean addDispatcher) {
    if (object instanceof Service) {
      Service service = (Service) object;
      ServiceWithDependency sd = new ServiceWithDependency(service);
      services.put(service, sd);
      if(addDispatcher) {
        addIfServiceDependency(service, dispatcher);
      }
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    }
  }

  protected void addIfServiceDependency(Object object, Object dependency) {
    if (object instanceof Service && dependency instanceof Service) {
      Service service = (Service) object;
      Service dependencyService = (Service) dependency;
      ServiceWithDependency sd = services.get(service);
      sd.dependencies.add(dependencyService);
      dependencyService.registerServiceListener(sd);
    }
  }
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    for (ServiceWithDependency sd : services.values()) {
      serviceList.add(sd.service);
    }
    Exception firstException = null;
    for (int i = services.size() - 1; i >= 0; i--) {
      Service service = serviceList.get(i);
      if (LOG.isDebugEnabled()) {
        LOG.debug("Stopping service : " + service);
      }
      Exception ex = ServiceOperations.stopQuietly(LOG, service);
      if (ex != null && firstException == null) {
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   */
  private void assertInState(STATE expected,
                             CompositeServiceImpl[] services,
                             int start, int finish) {
    for (int i = start; i < finish; i++) {
      Service service = services[i];
      assertInState(expected, service);
    }
  }
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      public void serviceInit(Configuration conf) {
        Integer notAService = new Integer(0);
        assertFalse("Added an integer as a service",
            addIfService(notAService));

        Service service1 = new AbstractService("Service1") {};
        addIfService(service1);

        Service service2 = new AbstractService("Service2") {};
        addIfService(service2);

        Service service3 = new AbstractService("Service3") {};
        addIfService(service3);

        removeService(service1);
      }
    };
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    assertEventCount(listener, 2);
  }

  @Test
  public void testStartInInitService() throws Throwable {
    Service service = new StartInInitService();
    BreakableStateChangeListener listener = new BreakableStateChangeListener();
    service.registerServiceListener(listener);
    service.init(new Configuration());
    assertServiceInState(service, Service.STATE.STARTED);
    assertEventCount(listener, 1);
  }
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    assertEventCount(listener, 1);
  }

  @Test
  public void testStopInInitService() throws Throwable {
    Service service = new StopInInitService();
    BreakableStateChangeListener listener = new BreakableStateChangeListener();
    service.registerServiceListener(listener);
    service.init(new Configuration());
    assertServiceInState(service, Service.STATE.STOPPED);
    assertEventCount(listener, 1);
  }
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