本文整理汇总了Java中org.apache.hadoop.service.LoggingStateChangeListener类的典型用法代码示例。如果您正苦于以下问题：Java LoggingStateChangeListener类的具体用法？Java LoggingStateChangeListener怎么用？Java LoggingStateChangeListener使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
LoggingStateChangeListener类属于org.apache.hadoop.service包，在下文中一共展示了LoggingStateChangeListener类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testStopFailingInitAndStop
import org.apache.hadoop.service.LoggingStateChangeListener; //导入依赖的package包/类
/**
* Show that if the service failed during an init
* operation, stop was called.
*/
@Test
public void testStopFailingInitAndStop() throws Throwable {
BreakableService svc = new BreakableService(true, false, true);
svc.registerServiceListener(new LoggingStateChangeListener());
try {
svc.init(new Configuration());
fail("Expected a failure, got " + svc);
} catch (BreakableService.BrokenLifecycleEvent e) {
assertEquals(Service.STATE.INITED, e.state);
}
//the service state is stopped
assertServiceStateStopped(svc);
assertEquals(Service.STATE.INITED, svc.getFailureState());
Throwable failureCause = svc.getFailureCause();
assertNotNull("Null failure cause in " + svc, failureCause);
BreakableService.BrokenLifecycleEvent cause =
(BreakableService.BrokenLifecycleEvent) failureCause;
assertNotNull("null state in " + cause + " raised by " + svc, cause.state);
assertEquals(Service.STATE.INITED, cause.state);
}
示例2: testListenerChain
import org.apache.hadoop.service.LoggingStateChangeListener; //导入依赖的package包/类
/**
* Create a chain of listeners and set one in the middle to fail; verify that
* those in front got called, and those after did not.
*/
@Test
public void testListenerChain() {
//create and register the listeners
LoggingStateChangeListener logListener = new LoggingStateChangeListener();
register(logListener);
BreakableStateChangeListener l0 = new BreakableStateChangeListener("l0");
register(l0);
listener.setFailingState(Service.STATE.STARTED);
register();
BreakableStateChangeListener l3 = new BreakableStateChangeListener("l3");
register(l3);
//create and init a service.
BreakableService service = new BreakableService();
service.init(new Configuration());
assertServiceStateInited(service);
assertListenerState(l0, Service.STATE.INITED);
assertListenerState(listener, Service.STATE.INITED);
assertListenerState(l3, Service.STATE.INITED);
service.start();
//expect that listener l1 and the failing listener are in start, but
//not the final one
assertServiceStateStarted(service);
assertListenerState(l0, Service.STATE.STARTED);
assertListenerEventCount(l0, 2);
assertListenerState(listener, Service.STATE.STARTED);
assertListenerEventCount(listener, 2);
//this is the listener that is not expected to have been invoked
assertListenerState(l3, Service.STATE.INITED);
assertListenerEventCount(l3, 1);
//stop the service
service.stop();
//listeners are all updated
assertListenerEventCount(l0, 3);
assertListenerEventCount(listener, 3);
assertListenerEventCount(l3, 2);
//can all be unregistered in any order
unregister(logListener);
unregister(l0);
unregister(l3);
//check that the listeners are all unregistered, even
//though they were registered in a different order.
//rather than do this by doing unregister checks, a new service is created
service = new BreakableService();
//this service is initialized
service.init(new Configuration());
//it is asserted that the event count has not changed for the unregistered
//listeners
assertListenerEventCount(l0, 3);
assertListenerEventCount(l3, 2);
//except for the one listener that was not unregistered, which
//has incremented by one
assertListenerEventCount(listener, 4);
}