| 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(); |
| } |
| } |