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

Metrics metrics = m_cluster.getMetrics();

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

@Override
public Metrics getMetrics() {
 return delegate().getMetrics();
}

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

private void connectInternal() {
  try {
    Cluster cluster = config.createBuilder().build();
    cassandraSession = cluster.connect(keySpace);
    cassandraMetrics = cluster.getMetrics();
    connected.set(true);
  } catch (Exception e) {
    LOGGER.error("Error connection to Cassandra" + e.getMessage());
    if (pool != null) {
      pool.shutdownNow();
      pool = null;
    }
    if (cassandraSession != null) {
      cassandraSession.close();
      if (cassandraSession.getCluster() != null)
        cassandraSession.getCluster().close();
    }
    connected.set(false);
  }
}

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

@Override
public void init(Cluster cluster, Collection<Host> hosts) {
 childPolicy.init(cluster, hosts);
 for (Host host : hosts) {
  latencyTracker.addHost(host);
 }
 cluster.register(latencyTracker);
 metrics = cluster.getMetrics();
 if (metrics != null) {
  metrics
    .getRegistry()
    .register(
      "LatencyAwarePolicy.latencies.min",
      new Gauge<Long>() {
       @Override
       public Long getValue() {
        return latencyTracker.getMinAverage();
       }
      });
 }
}

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

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

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

@Test(groups = "short")
public void retriesTest() {
 retryDecision = RetryDecision.retry(ConsistencyLevel.ONE);
 // We only have one node, this will throw an unavailable exception
 Statement statement =
   new SimpleStatement("SELECT v FROM test WHERE k = 1")
     .setConsistencyLevel(ConsistencyLevel.TWO);
 session().execute(statement);
 Errors errors = cluster().getMetrics().getErrorMetrics();
 assertEquals(errors.getUnavailables().getCount(), 1);
 assertEquals(errors.getRetries().getCount(), 1);
 assertEquals(errors.getRetriesOnUnavailable().getCount(), 1);
 retryDecision = RetryDecision.ignore();
 session().execute(statement);
 assertEquals(errors.getUnavailables().getCount(), 2);
 assertEquals(errors.getIgnores().getCount(), 1);
 assertEquals(errors.getIgnoresOnUnavailable().getCount(), 1);
}

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

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

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

assertEquals((int) cluster.getMetrics().getOpenConnections().getValue(), 1);
assertEquals(channelMonitor.openChannels(getContactPointsWithPorts()).size(), 1);
assertEquals(cluster.manager.sessions.size(), 1);
assertEquals(
  (int) cluster.getMetrics().getOpenConnections().getValue(),
  1 + TestUtils.numberOfLocalCoreConnections(cluster));
assertEquals(
assertEquals((int) cluster.getMetrics().getOpenConnections().getValue(), 1);
assertEquals(channelMonitor.openChannels(getContactPointsWithPorts()).size(), 1);

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

@Test(groups = "short")
 public void should_preserve_timestamp_when_retrying() {
  SimpleStatement statement = new SimpleStatement("INSERT INTO foo (k, v) VALUES (1, 1)");
  statement.setDefaultTimestamp(10);
  // This will fail since we test against a single-host cluster. The
  // DowngradingConsistencyRetryPolicy
  // will retry it at ONE.
  statement.setConsistencyLevel(ConsistencyLevel.TWO);

  session().execute(statement);

  Errors metrics = session().getCluster().getMetrics().getErrorMetrics();
  assertEquals(metrics.getRetriesOnUnavailable().getCount(), 1);

  long writeTime = session().execute("SELECT writeTime(v) FROM foo WHERE k = 1").one().getLong(0);
  assertEquals(writeTime, 10);
 }
}

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

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

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

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

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

@Test(groups = "short")
public void should_connect_with_credentials() {
 PlainTextAuthProvider authProvider = spy(new PlainTextAuthProvider("cassandra", "cassandra"));
 Cluster cluster =
   Cluster.builder()
     .addContactPoints(getContactPoints())
     .withPort(ccm().getBinaryPort())
     .withAuthProvider(authProvider)
     .build();
 cluster.connect();
 verify(authProvider, atLeastOnce())
   .newAuthenticator(
     findHost(cluster, 1).getSocketAddress(),
     "org.apache.cassandra.auth.PasswordAuthenticator");
 assertThat(cluster.getMetrics().getErrorMetrics().getAuthenticationErrors().getCount())
   .isEqualTo(0);
}

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

@Test(groups = "short")
 public void should_countdown_inflight_requests_metrics() {
  sCluster
    .node(1)
    .primingClient()
    .prime(PrimingRequest.queryBuilder().withQuery("mock query").withThen(then()).build());

  Cluster cluster = null;
  try {
   cluster = builder().build();
   Session session = cluster.connect();

   assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(0);
   session.executeAsync("mock query").getUninterruptibly();
   session.executeAsync("mock query").getUninterruptibly();
   assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(0);

  } finally {
   if (cluster != null) {
    cluster.close();
   }
  }
 }
}

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

@Test(groups = "short")
public void should_count_inflight_requests_metrics() {
 sCluster
   .node(1)
   .primingClient()
   .prime(
     PrimingRequest.queryBuilder()
       .withQuery("mock query")
       .withThen(then().withFixedDelay(100000L))
       .build());
 Cluster cluster = null;
 try {
  cluster = builder().build();
  Session session = cluster.connect();
  assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(0);
  session.executeAsync("mock query");
  session.executeAsync("mock query");
  assertThat(cluster.getMetrics().getInFlightRequests().getValue()).isEqualTo(2);
 } finally {
  if (cluster != null) {
   cluster.close();
  }
 }
}

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

/**
  * Validates that when metrics are enabled but JMX reporting is disabled via {@link
  * Cluster.Builder#withoutJMXReporting()} that {@link Cluster#getMetrics()} is not null and
  * 'clusterName-metrics:name=connected-to' MBean is present.
  *
  * @test_category metrics
  */
 @Test(groups = "short", expectedExceptions = InstanceNotFoundException.class)
 public void should_be_no_jmx_mbean_when_jmx_is_disabled() throws Exception {
  Cluster cluster =
    register(
      Cluster.builder()
        .addContactPoints(getContactPoints())
        .withPort(ccm().getBinaryPort())
        .withoutJMXReporting()
        .build());
  try {
   cluster.init();
   assertThat(cluster.getMetrics()).isNotNull();
   assertThat(cluster.getConfiguration().getMetricsOptions().isEnabled()).isTrue();
   assertThat(cluster.getConfiguration().getMetricsOptions().isJMXReportingEnabled()).isFalse();
   ObjectName clusterMetricsON =
     ObjectName.getInstance(cluster.getClusterName() + "-metrics:name=connected-to");
   server.getMBeanInfo(clusterMetricsON);
  } finally {
   cluster.close();
  }
 }
}

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

@BeforeMethod(groups = "short")
public void beforeMethod() {
 cluster =
   Cluster.builder()
     .addContactPoints(scassandras.address(1).getAddress())
     .withPort(scassandras.getBinaryPort())
     .withRetryPolicy(FallthroughRetryPolicy.INSTANCE)
     .build();
 session = cluster.connect();
 host1 = TestUtils.findHost(cluster, 1);
 errors = cluster.getMetrics().getErrorMetrics();
 for (Scassandra node : scassandras.nodes()) {
  node.primingClient().clearAllPrimes();
  node.activityClient().clearAllRecordedActivity();
 }
}

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

/**
 * Validates that when metrics are disabled using {@link Cluster.Builder#withoutMetrics()} that
 * {@link Cluster#getMetrics()} returns null and 'clusterName-metrics:name=connected-to' MBean is
 * not present.
 *
 * @test_category metrics
 */
@Test(groups = "short", expectedExceptions = InstanceNotFoundException.class)
public void metrics_should_be_null_when_metrics_disabled() throws Exception {
 Cluster cluster =
   register(
     Cluster.builder()
       .addContactPoints(getContactPoints())
       .withPort(ccm().getBinaryPort())
       .withoutMetrics()
       .build());
 try {
  cluster.init();
  assertThat(cluster.getMetrics()).isNull();
  assertThat(cluster.getConfiguration().getMetricsOptions().isEnabled()).isFalse();
  ObjectName clusterMetricsON =
    ObjectName.getInstance(cluster.getClusterName() + "-metrics:name=connected-to");
  server.getMBeanInfo(clusterMetricsON);
 } finally {
  cluster.close();
 }
}

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

@BeforeMethod(groups = "short")
public void beforeMethod() {
 scassandras = ScassandraCluster.builder().withNodes(3).build();
 scassandras.init();
 int speculativeExecutionDelay = 200;
 loadBalancingPolicy = new SortingLoadBalancingPolicy();
 cluster =
   Cluster.builder()
     .addContactPoints(scassandras.address(2).getAddress())
     .withPort(scassandras.getBinaryPort())
     .withLoadBalancingPolicy(loadBalancingPolicy)
     .withSpeculativeExecutionPolicy(
       new ConstantSpeculativeExecutionPolicy(speculativeExecutionDelay, 1))
     .withQueryOptions(new QueryOptions().setDefaultIdempotence(true))
     .withRetryPolicy(new CustomRetryPolicy())
     .withNettyOptions(nonQuietClusterCloseOptions)
     .build();
 session = cluster.connect();
 host1 = TestUtils.findHost(cluster, 1);
 host2 = TestUtils.findHost(cluster, 2);
 host3 = TestUtils.findHost(cluster, 3);
 errors = cluster.getMetrics().getErrorMetrics();
}

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

@BeforeMethod(groups = "short")
public void beforeMethod() {
 scassandras = ScassandraCluster.builder().withNodes(3).build();
 scassandras.init();
 cluster =
   Cluster.builder()
     .addContactPoints(scassandras.address(1).getAddress())
     .withPort(scassandras.getBinaryPort())
     .withRetryPolicy(retryPolicy)
     .withLoadBalancingPolicy(new SortingLoadBalancingPolicy())
     .withPoolingOptions(
       new PoolingOptions()
         .setCoreConnectionsPerHost(HostDistance.LOCAL, 1)
         .setMaxConnectionsPerHost(HostDistance.LOCAL, 1)
         .setHeartbeatIntervalSeconds(0))
     .withNettyOptions(nonQuietClusterCloseOptions)
     // Mark everything as idempotent by default so RetryPolicy is exercised.
     .withQueryOptions(new QueryOptions().setDefaultIdempotence(true))
     .build();
 session = cluster.connect();
 host1 = TestUtils.findHost(cluster, 1);
 host2 = TestUtils.findHost(cluster, 2);
 host3 = TestUtils.findHost(cluster, 3);
 errors = cluster.getMetrics().getErrorMetrics();
 Mockito.reset(retryPolicy);
 for (Scassandra node : scassandras.nodes()) {
  node.activityClient().clearAllRecordedActivity();
 }
}

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

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

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