com.datastax.driver.core.Cluster.getMetrics()方法的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中com.datastax.driver.core.Cluster.getMetrics()方法的一些代码示例，展示了Cluster.getMetrics()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Cluster.getMetrics()方法的具体详情如下：
包路径：com.datastax.driver.core.Cluster
类名称：Cluster
方法名：getMetrics

Cluster.getMetrics介绍

[英]The cluster metrics.
[中]集群度量。

代码示例

代码示例来源：origin: kairosdb/kairosdb

  1. Metrics metrics = m_cluster.getMetrics();

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Override
  2. public Metrics getMetrics() {
  3.  return delegate().getMetrics();
  4. }

代码示例来源：origin: pulsarIO/realtime-analytics

  1. private void connectInternal() {
  2.   try {
  3.     Cluster cluster = config.createBuilder().build();
  4.     cassandraSession = cluster.connect(keySpace);
  5.     cassandraMetrics = cluster.getMetrics();
  6.     connected.set(true);
  7.   } catch (Exception e) {
  8.     LOGGER.error("Error connection to Cassandra" + e.getMessage());
  9.     if (pool != null) {
  10.       pool.shutdownNow();
  11.       pool = null;
  12.     }
  13.     if (cassandraSession != null) {
  14.       cassandraSession.close();
  15.       if (cassandraSession.getCluster() != null)
  16.         cassandraSession.getCluster().close();
  17.     }
  18.     connected.set(false);
  19.   }
  20. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Override
  2. public void init(Cluster cluster, Collection<Host> hosts) {
  3.  childPolicy.init(cluster, hosts);
  4.  for (Host host : hosts) {
  5.   latencyTracker.addHost(host);
  6.  }
  7.  cluster.register(latencyTracker);
  8.  metrics = cluster.getMetrics();
  9.  if (metrics != null) {
  10.   metrics
  11.     .getRegistry()
  12.     .register(
  13.       "LatencyAwarePolicy.latencies.min",
  14.       new Gauge<Long>() {
  15.        @Override
  16.        public Long getValue() {
  17.         return latencyTracker.getMinAverage();
  18.        }
  19.       });
  20.  }
  21. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. assertThat(cluster().getMetrics().getOpenConnections().getValue())
  2.   .isEqualTo(TestUtils.numberOfLocalCoreConnections(cluster()) + 1);
  3. assertThat(cluster().getMetrics().getOpenConnections().getValue()).isEqualTo(1);

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Test(groups = "short")
  2. public void retriesTest() {
  3.  retryDecision = RetryDecision.retry(ConsistencyLevel.ONE);
  4.  // We only have one node, this will throw an unavailable exception
  5.  Statement statement =
  6.    new SimpleStatement("SELECT v FROM test WHERE k = 1")
  7.      .setConsistencyLevel(ConsistencyLevel.TWO);
  8.  session().execute(statement);
  9.  Errors errors = cluster().getMetrics().getErrorMetrics();
  10.  assertEquals(errors.getUnavailables().getCount(), 1);
  11.  assertEquals(errors.getRetries().getCount(), 1);
  12.  assertEquals(errors.getRetriesOnUnavailable().getCount(), 1);
  13.  retryDecision = RetryDecision.ignore();
  14.  session().execute(statement);
  15.  assertEquals(errors.getUnavailables().getCount(), 2);
  16.  assertEquals(errors.getIgnores().getCount(), 1);
  17.  assertEquals(errors.getIgnoresOnUnavailable().getCount(), 1);
  18. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. private void assertOpenConnections(int expected, Cluster cluster) {
  2.   assertThat(cluster.getMetrics().getOpenConnections().getValue()).isEqualTo(expected);
  3.   assertThat(channelMonitor.openChannels(ccm().addressOfNode(1), ccm().addressOfNode(2)).size())
  4.     .isEqualTo(expected);
  5.  }
  6. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. assertEquals((int) cluster.getMetrics().getOpenConnections().getValue(), 1);
  2. assertEquals(channelMonitor.openChannels(getContactPointsWithPorts()).size(), 1);
  3. assertEquals(cluster.manager.sessions.size(), 1);
  4. assertEquals(
  5.   (int) cluster.getMetrics().getOpenConnections().getValue(),
  6.   1 + TestUtils.numberOfLocalCoreConnections(cluster));
  7. assertEquals(
  8. assertEquals((int) cluster.getMetrics().getOpenConnections().getValue(), 1);
  9. assertEquals(channelMonitor.openChannels(getContactPointsWithPorts()).size(), 1);

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Test(groups = "short")
  2.  public void should_preserve_timestamp_when_retrying() {
  3.   SimpleStatement statement = new SimpleStatement("INSERT INTO foo (k, v) VALUES (1, 1)");
  4.   statement.setDefaultTimestamp(10);
  5.   // This will fail since we test against a single-host cluster. The
  6.   // DowngradingConsistencyRetryPolicy
  7.   // will retry it at ONE.
  8.   statement.setConsistencyLevel(ConsistencyLevel.TWO);
  10.   session().execute(statement);
  12.   Errors metrics = session().getCluster().getMetrics().getErrorMetrics();
  13.   assertEquals(metrics.getRetriesOnUnavailable().getCount(), 1);
  15.   long writeTime = session().execute("SELECT writeTime(v) FROM foo WHERE k = 1").one().getLong(0);
  16.   assertEquals(writeTime, 10);
  17.  }
  18. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Test(groups = "short")
  2. public void testMissingRpcAddressAtStartup() throws Exception {
  3.  deleteNode2RpcAddressFromNode1();
  4.  // Use only one contact point to make sure that the control connection is on node1
  5.  Cluster cluster =
  6.    register(
  7.      Cluster.builder()
  8.        .addContactPoints(getContactPoints().get(0))
  9.        .withPort(ccm().getBinaryPort())
  10.        .build());
  11.  cluster.connect();
  12.  // Since node2's RPC address is unknown on our control host, it should have been ignored
  13.  assertEquals(cluster.getMetrics().getConnectedToHosts().getValue().intValue(), 1);
  14.  assertNull(cluster.getMetadata().getHost(getContactPointsWithPorts().get(1)));
  15. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. /**
  2.  * Validates that metrics are enabled and exposed by JMX by default by checking that {@link
  3.  * Cluster#getMetrics()} is not null and 'clusterName-metrics:name=connected-to' MBean is present.
  4.  *
  5.  * @test_category metrics
  6.  */
  7. @Test(groups = "short")
  8. public void should_enable_metrics_and_jmx_by_default() throws Exception {
  9.  assertThat(cluster().getMetrics()).isNotNull();
  10.  ObjectName clusterMetricsON =
  11.    ObjectName.getInstance(cluster().getClusterName() + "-metrics:name=connected-to");
  12.  MBeanInfo mBean = server.getMBeanInfo(clusterMetricsON);
  13.  assertThat(mBean).isNotNull();
  14.  assertThat(cluster().getConfiguration().getMetricsOptions().isEnabled()).isTrue();
  15.  assertThat(cluster().getConfiguration().getMetricsOptions().isJMXReportingEnabled()).isTrue();
  16. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Test(groups = "short")
  2. public void should_connect_with_credentials() {
  3.  PlainTextAuthProvider authProvider = spy(new PlainTextAuthProvider("cassandra", "cassandra"));
  4.  Cluster cluster =
  5.    Cluster.builder()
  6.      .addContactPoints(getContactPoints())
  7.      .withPort(ccm().getBinaryPort())
  8.      .withAuthProvider(authProvider)
  9.      .build();
  10.  cluster.connect();
  11.  verify(authProvider, atLeastOnce())
  12.    .newAuthenticator(
  13.      findHost(cluster, 1).getSocketAddress(),
  14.      "org.apache.cassandra.auth.PasswordAuthenticator");
  15.  assertThat(cluster.getMetrics().getErrorMetrics().getAuthenticationErrors().getCount())
  16.    .isEqualTo(0);
  17. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Test(groups = "short")
  2.  public void should_countdown_inflight_requests_metrics() {
  3.   sCluster
  4.     .node(1)
  5.     .primingClient()
  6.     .prime(PrimingRequest.queryBuilder().withQuery("mock query").withThen(then()).build());
  8.   Cluster cluster = null;
  9.   try {
  10.    cluster = builder().build();
  11.    Session session = cluster.connect();
  13.    assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(0);
  14.    session.executeAsync("mock query").getUninterruptibly();
  15.    session.executeAsync("mock query").getUninterruptibly();
  16.    assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(0);
  18.   } finally {
  19.    if (cluster != null) {
  20.     cluster.close();
  21.    }
  22.   }
  23.  }
  24. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Test(groups = "short")
  2. public void should_count_inflight_requests_metrics() {
  3.  sCluster
  4.    .node(1)
  5.    .primingClient()
  6.    .prime(
  7.      PrimingRequest.queryBuilder()
  8.        .withQuery("mock query")
  9.        .withThen(then().withFixedDelay(100000L))
  10.        .build());
  11.  Cluster cluster = null;
  12.  try {
  13.   cluster = builder().build();
  14.   Session session = cluster.connect();
  15.   assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(0);
  16.   session.executeAsync("mock query");
  17.   session.executeAsync("mock query");
  18.   assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(2);
  19.  } finally {
  20.   if (cluster != null) {
  21.    cluster.close();
  22.   }
  23.  }
  24. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. /**
  2.   * Validates that when metrics are enabled but JMX reporting is disabled via {@link
  3.   * Cluster.Builder#withoutJMXReporting()} that {@link Cluster#getMetrics()} is not null and
  4.   * 'clusterName-metrics:name=connected-to' MBean is present.
  5.   *
  6.   * @test_category metrics
  7.   */
  8.  @Test(groups = "short", expectedExceptions = InstanceNotFoundException.class)
  9.  public void should_be_no_jmx_mbean_when_jmx_is_disabled() throws Exception {
  10.   Cluster cluster =
  11.     register(
  12.       Cluster.builder()
  13.         .addContactPoints(getContactPoints())
  14.         .withPort(ccm().getBinaryPort())
  15.         .withoutJMXReporting()
  16.         .build());
  17.   try {
  18.    cluster.init();
  19.    assertThat(cluster.getMetrics()).isNotNull();
  20.    assertThat(cluster.getConfiguration().getMetricsOptions().isEnabled()).isTrue();
  21.    assertThat(cluster.getConfiguration().getMetricsOptions().isJMXReportingEnabled()).isFalse();
  22.    ObjectName clusterMetricsON =
  23.      ObjectName.getInstance(cluster.getClusterName() + "-metrics:name=connected-to");
  24.    server.getMBeanInfo(clusterMetricsON);
  25.   } finally {
  26.    cluster.close();
  27.   }
  28.  }
  29. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @BeforeMethod(groups = "short")
  2. public void beforeMethod() {
  3.  cluster =
  4.    Cluster.builder()
  5.      .addContactPoints(scassandras.address(1).getAddress())
  6.      .withPort(scassandras.getBinaryPort())
  7.      .withRetryPolicy(FallthroughRetryPolicy.INSTANCE)
  8.      .build();
  9.  session = cluster.connect();
  10.  host1 = TestUtils.findHost(cluster, 1);
  11.  errors = cluster.getMetrics().getErrorMetrics();
  12.  for (Scassandra node : scassandras.nodes()) {
  13.   node.primingClient().clearAllPrimes();
  14.   node.activityClient().clearAllRecordedActivity();
  15.  }
  16. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. /**
  2.  * Validates that when metrics are disabled using {@link Cluster.Builder#withoutMetrics()} that
  3.  * {@link Cluster#getMetrics()} returns null and 'clusterName-metrics:name=connected-to' MBean is
  4.  * not present.
  5.  *
  6.  * @test_category metrics
  7.  */
  8. @Test(groups = "short", expectedExceptions = InstanceNotFoundException.class)
  9. public void metrics_should_be_null_when_metrics_disabled() throws Exception {
  10.  Cluster cluster =
  11.    register(
  12.      Cluster.builder()
  13.        .addContactPoints(getContactPoints())
  14.        .withPort(ccm().getBinaryPort())
  15.        .withoutMetrics()
  16.        .build());
  17.  try {
  18.   cluster.init();
  19.   assertThat(cluster.getMetrics()).isNull();
  20.   assertThat(cluster.getConfiguration().getMetricsOptions().isEnabled()).isFalse();
  21.   ObjectName clusterMetricsON =
  22.     ObjectName.getInstance(cluster.getClusterName() + "-metrics:name=connected-to");
  23.   server.getMBeanInfo(clusterMetricsON);
  24.  } finally {
  25.   cluster.close();
  26.  }
  27. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @BeforeMethod(groups = "short")
  2. public void beforeMethod() {
  3.  scassandras = ScassandraCluster.builder().withNodes(3).build();
  4.  scassandras.init();
  5.  int speculativeExecutionDelay = 200;
  6.  loadBalancingPolicy = new SortingLoadBalancingPolicy();
  7.  cluster =
  8.    Cluster.builder()
  9.      .addContactPoints(scassandras.address(2).getAddress())
  10.      .withPort(scassandras.getBinaryPort())
  11.      .withLoadBalancingPolicy(loadBalancingPolicy)
  12.      .withSpeculativeExecutionPolicy(
  13.        new ConstantSpeculativeExecutionPolicy(speculativeExecutionDelay, 1))
  14.      .withQueryOptions(new QueryOptions().setDefaultIdempotence(true))
  15.      .withRetryPolicy(new CustomRetryPolicy())
  16.      .withNettyOptions(nonQuietClusterCloseOptions)
  17.      .build();
  18.  session = cluster.connect();
  19.  host1 = TestUtils.findHost(cluster, 1);
  20.  host2 = TestUtils.findHost(cluster, 2);
  21.  host3 = TestUtils.findHost(cluster, 3);
  22.  errors = cluster.getMetrics().getErrorMetrics();
  23. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @BeforeMethod(groups = "short")
  2. public void beforeMethod() {
  3.  scassandras = ScassandraCluster.builder().withNodes(3).build();
  4.  scassandras.init();
  5.  cluster =
  6.    Cluster.builder()
  7.      .addContactPoints(scassandras.address(1).getAddress())
  8.      .withPort(scassandras.getBinaryPort())
  9.      .withRetryPolicy(retryPolicy)
  10.      .withLoadBalancingPolicy(new SortingLoadBalancingPolicy())
  11.      .withPoolingOptions(
  12.        new PoolingOptions()
  13.          .setCoreConnectionsPerHost(HostDistance.LOCAL, 1)
  14.          .setMaxConnectionsPerHost(HostDistance.LOCAL, 1)
  15.          .setHeartbeatIntervalSeconds(0))
  16.      .withNettyOptions(nonQuietClusterCloseOptions)
  17.      // Mark everything as idempotent by default so RetryPolicy is exercised.
  18.      .withQueryOptions(new QueryOptions().setDefaultIdempotence(true))
  19.      .build();
  20.  session = cluster.connect();
  21.  host1 = TestUtils.findHost(cluster, 1);
  22.  host2 = TestUtils.findHost(cluster, 2);
  23.  host3 = TestUtils.findHost(cluster, 3);
  24.  errors = cluster.getMetrics().getErrorMetrics();
  25.  Mockito.reset(retryPolicy);
  26.  for (Scassandra node : scassandras.nodes()) {
  27.   node.activityClient().clearAllRecordedActivity();
  28.  }
  29. }

代码示例来源：origin: com.datastax.cassandra/cassandra-driver-core

  1. @Test(groups = "short")
  2. public void should_measure_inbound_and_outbound_traffic() {
  3.  Metrics metrics = session().getCluster().getMetrics();
  4.  Meter bytesReceived = metrics.getBytesReceived();
  5.  Meter bytesSent = metrics.getBytesSent();

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