/*
* Copyright (C) 2012-2015 DataStax Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.datastax.driver.core;
import com.datastax.driver.core.Metrics.Errors;
import com.datastax.driver.core.exceptions.DriverException;
import com.datastax.driver.core.policies.RetryPolicy;
import com.datastax.driver.core.policies.RetryPolicy.RetryDecision;
import org.testng.annotations.Test;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanInfo;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import java.lang.management.ManagementFactory;
import static com.datastax.driver.core.Assertions.assertThat;
import static org.testng.Assert.assertEquals;
public class MetricsTest extends CCMTestsSupport {
private volatile RetryDecision retryDecision;
MBeanServer server = ManagementFactory.getPlatformMBeanServer();
@Override
public Cluster.Builder createClusterBuilder() {
return Cluster.builder().withRetryPolicy(new RetryPolicy() {
@Override
public RetryDecision onReadTimeout(Statement statement, ConsistencyLevel cl, int requiredResponses, int receivedResponses, boolean dataRetrieved, int nbRetry) {
return retryDecision;
}
@Override
public RetryDecision onWriteTimeout(Statement statement, ConsistencyLevel cl, WriteType writeType, int requiredAcks, int receivedAcks, int nbRetry) {
return retryDecision;
}
@Override
public RetryDecision onUnavailable(Statement statement, ConsistencyLevel cl, int requiredReplica, int aliveReplica, int nbRetry) {
return retryDecision;
}
@Override
public RetryDecision onRequestError(Statement statement, ConsistencyLevel cl, DriverException e, int nbRetry) {
return retryDecision;
}
@Override
public void init(Cluster cluster) {
}
@Override
public void close() {
}
});
}
@Override
public void onTestContextInitialized() {
execute("CREATE TABLE test (k int primary key, v int)",
"INSERT INTO test (k, v) VALUES (1, 1)");
}
@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);
}
/**
* 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();
}
/**
* 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();
}
}
/**
* 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();
}
}
}