Java MetricsSystem.shutdown方法代码示例

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
/**
 * Test that writing fails when the directory isn't writable.
 */
@Test
public void testFailedWrite() {
  String path = methodDir.getAbsolutePath();
  MetricsSystem ms = initMetricsSystem(path, false, false);

  new MyMetrics1().registerWith(ms);

  methodDir.setWritable(false);
  MockSink.errored = false;

  try {
    // publish the metrics
    ms.publishMetricsNow();

    assertTrue("No exception was generated while writing metrics "
        + "even though the target directory was not writable",
        MockSink.errored);

    ms.stop();
    ms.shutdown();
  } finally {
    // Make sure the dir is writable again so we can delete it at the end
    methodDir.setWritable(true);
  }
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
/**
 * Helper method that writes metrics files to a target path, reads those
 * files, and returns the contents of all files as a single string. This
 * method will assert that the correct number of files is found.
 *
 * @param ms an initialized MetricsSystem to use
 * @param path the target path from which to read the logs
 * @param count the number of log files to expect
 * @return the contents of the log files
 * @throws IOException when the log file can't be read
 * @throws URISyntaxException when the target path is an invalid URL
 */
protected String doWriteTest(MetricsSystem ms, String path, int count)
    throws IOException, URISyntaxException {
  final String then = DATE_FORMAT.format(new Date());

  MyMetrics1 mm1 = new MyMetrics1().registerWith(ms);
  new MyMetrics2().registerWith(ms);

  mm1.testMetric1.incr();
  mm1.testMetric2.incr(2);

  ms.publishMetricsNow(); // publish the metrics
  ms.stop();
  ms.shutdown();

  return readLogFile(path, then, count);
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
@Test public void testUnregisterSource() {
  MetricsSystem ms = new MetricsSystemImpl();
  TestSource ts1 = new TestSource("ts1");
  TestSource ts2 = new TestSource("ts2");
  ms.register("ts1", "", ts1);
  ms.register("ts2", "", ts2);
  MetricsSource s1 = ms.getSource("ts1");
  assertNotNull(s1);
  // should work when metrics system is not started
  ms.unregisterSource("ts1");
  s1 = ms.getSource("ts1");
  assertNull(s1);
  MetricsSource s2 = ms.getSource("ts2");
  assertNotNull(s2);
  ms.shutdown();
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
@Test public void testRegisterSourceWithoutName() {
  MetricsSystem ms = new MetricsSystemImpl();
  TestSource ts = new TestSource("ts");
  TestSource2 ts2 = new TestSource2("ts2");
  ms.register(ts);
  ms.register(ts2);
  ms.init("TestMetricsSystem");
  // if metrics source is registered without name,
  // the class name will be used as the name
  MetricsSourceAdapter sa = ((MetricsSystemImpl) ms)
      .getSourceAdapter("TestSource");
  assertNotNull(sa);
  MetricsSourceAdapter sa2 = ((MetricsSystemImpl) ms)
      .getSourceAdapter("TestSource2");
  assertNotNull(sa2);
  ms.shutdown();
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
/**
 * Test that writing fails silently when the directory is not writable.
 */
@Test
public void testSilentFailedWrite() {
  String path = methodDir.getAbsolutePath();
  MetricsSystem ms = initMetricsSystem(path, true, false);

  new MyMetrics1().registerWith(ms);

  methodDir.setWritable(false);
  MockSink.errored = false;

  try {
    // publish the metrics
    ms.publishMetricsNow();

    assertFalse("An exception was generated while writing metrics "
        + "when the target directory was not writable, even though the "
        + "sink is set to ignore errors",
        MockSink.errored);

    ms.stop();
    ms.shutdown();
  } finally {
    // Make sure the dir is writable again so we can delete it at the end
    methodDir.setWritable(true);
  }
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
@Test public void testRegisterDups() {
  MetricsSystem ms = new MetricsSystemImpl();
  TestSource ts1 = new TestSource("ts1");
  TestSource ts2 = new TestSource("ts2");
  ms.register("ts1", "", ts1);
  MetricsSource s1 = ms.getSource("ts1");
  assertNotNull(s1);
  // should work when metrics system is not started
  ms.register("ts1", "", ts2);
  MetricsSource s2 = ms.getSource("ts1");
  assertNotNull(s2);
  assertNotSame(s1, s2);
  ms.shutdown();
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
@Test
public void testRegisterSourceJmxCacheTTL() {
  MetricsSystem ms = new MetricsSystemImpl();
  ms.init("TestMetricsSystem");
  TestSource ts = new TestSource("ts");
  ms.register(ts);
  MetricsSourceAdapter sa = ((MetricsSystemImpl) ms)
      .getSourceAdapter("TestSource");
  assertEquals(MetricsConfig.PERIOD_DEFAULT * 1000 + 1,
      sa.getJmxCacheTTL());
  ms.shutdown();
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
@Test 
public void testMetricsCache() {
  MetricsSystem ms = new MetricsSystemImpl("cache");
  ms.start();
  
  try {
    String p1 = "root1";
    String leafQueueName = "root1.leaf";

    QueueMetrics p1Metrics =
        QueueMetrics.forQueue(ms, p1, null, true, conf);
    Queue parentQueue1 = make(stub(Queue.class).returning(p1Metrics).
        from.getMetrics());
    QueueMetrics metrics =
        QueueMetrics.forQueue(ms, leafQueueName, parentQueue1, true, conf);

    Assert.assertNotNull("QueueMetrics for A shoudn't be null", metrics);

    // Re-register to check for cache hit, shouldn't blow up metrics-system...
    // also, verify parent-metrics
    QueueMetrics alterMetrics =
        QueueMetrics.forQueue(ms, leafQueueName, parentQueue1, true, conf);

    Assert.assertNotNull("QueueMetrics for alterMetrics shoudn't be null", 
        alterMetrics);
  } finally {
    ms.shutdown();
  }
}
 

import org.apache.hadoop.metrics2.MetricsSystem; //导入方法依赖的package包/类
@Test
public void testMetricsCache() {
  MetricsSystem ms = new MetricsSystemImpl("cache");
  ms.start();
  
  try {
    String p1 = "root1";
    String leafQueueName = "root1.leaf";
    
    QueueMetrics p1Metrics =
        QueueMetrics.forQueue(ms, p1, null, true, conf);
    Queue parentQueue1 = make(stub(Queue.class).returning(p1Metrics).
        from.getMetrics());
    QueueMetrics metrics =
        QueueMetrics.forQueue(ms, leafQueueName, parentQueue1, true, conf);
    
    Assert.assertNotNull("QueueMetrics for A shoudn't be null", metrics);
    
    // Re-register to check for cache hit, shouldn't blow up metrics-system...
    // also, verify parent-metrics
    QueueMetrics alterMetrics =
        QueueMetrics.forQueue(ms, leafQueueName, parentQueue1, true, conf);
    
    Assert.assertNotNull("QueueMetrics for alterMetrics shoudn't be null",
        alterMetrics);
  } finally {
    ms.shutdown();
  }
}