blob: 248ed568706d8d56fa8f1fe1267b5b3eba4c7ab1 [file] [log] [blame]
package org.apache.helix.monitoring.mbeans;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.util.Stack;
import javax.management.JMException;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.apache.helix.TestHelper;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestCustomizedViewMonitor {
private static final MBeanServerConnection _server = ManagementFactory.getPlatformMBeanServer();
private final String TEST_CLUSTER = "test_cluster";
private final String MAX_SUFFIX = ".Max";
private final String MEAN_SUFFIX = ".Mean";
private ObjectName buildObjectName(int duplicateNum) throws MalformedObjectNameException {
ObjectName objectName = new ObjectName(String
.format("%s:%s=%s,%s=%s", MonitorDomainNames.AggregatedView.name(), "Type",
"CustomizedView", "Cluster", TEST_CLUSTER));
if (duplicateNum == 0) {
return objectName;
} else {
return new ObjectName(
String.format("%s,%s=%s", objectName.toString(), MBeanRegistrar.DUPLICATE, duplicateNum));
}
}
@Test
public void testMBeanRegistration() throws JMException, IOException {
int numOfMonitors = 5;
Stack<CustomizedViewMonitor> monitors = new Stack<>();
for (int i = 0; i < numOfMonitors; i++) {
CustomizedViewMonitor monitor = new CustomizedViewMonitor(TEST_CLUSTER);
monitor.register();
monitors.push(monitor);
}
for (int i = 0; i < numOfMonitors; i++) {
if (i == numOfMonitors - 1) {
Assert.assertTrue(_server.isRegistered(buildObjectName(0)));
} else {
Assert.assertTrue(_server.isRegistered(buildObjectName(numOfMonitors - i - 1)));
}
CustomizedViewMonitor monitor = monitors.pop();
assert monitor != null;
monitor.unregister();
if (i == numOfMonitors - 1) {
Assert.assertFalse(_server.isRegistered(buildObjectName(0)));
} else {
Assert.assertFalse(_server.isRegistered(buildObjectName(numOfMonitors - i - 1)));
}
}
}
@Test
public void testMetricInitialization() throws Exception {
CustomizedViewMonitor monitor = new CustomizedViewMonitor(TEST_CLUSTER);
monitor.register();
int sum = 0;
for (int i = 0; i < 10; i++) {
monitor.recordUpdateToAggregationLatency(i);
sum += i;
int expectedMax = i;
double expectedMean = sum / (i + 1.0);
Assert.assertTrue(TestHelper.verify(() -> (long) _server.getAttribute(buildObjectName(0),
CustomizedViewMonitor.UPDATE_TO_AGGREGATION_LATENCY_GAUGE + MAX_SUFFIX) == expectedMax,
TestHelper.WAIT_DURATION));
Assert.assertTrue(TestHelper.verify(() -> (double) _server.getAttribute(buildObjectName(0),
CustomizedViewMonitor.UPDATE_TO_AGGREGATION_LATENCY_GAUGE + MEAN_SUFFIX) == expectedMean,
TestHelper.WAIT_DURATION));
}
monitor.unregister();
}
}