/** * 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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 org.apache.ratis.server.impl; import org.apache.ratis.BaseTest; import org.apache.ratis.conf.RaftProperties; import org.apache.ratis.protocol.RaftGroupId; import org.apache.ratis.protocol.RaftPeerId; import org.apache.ratis.server.RaftServerMXBean; import org.apache.ratis.server.simulation.MiniRaftClusterWithSimulatedRpc; import org.apache.ratis.util.JmxRegister; import org.junit.Assert; import org.junit.Test; import javax.management.JMException; import javax.management.MBeanServer; import javax.management.ObjectInstance; import javax.management.ObjectName; import java.lang.management.ManagementFactory; import java.util.List; import java.util.Set; import static org.apache.ratis.RaftTestUtil.waitForLeader; public class TestRaftServerJmx extends BaseTest { @Test(timeout = 30000) public void testJmxBeans() throws Exception { final int NUM_SERVERS = 3; final MiniRaftClusterWithSimulatedRpc cluster = MiniRaftClusterWithSimulatedRpc.FACTORY.newCluster(3, new RaftProperties()); cluster.start(); waitForLeader(cluster); MBeanServer platformMBeanServer = ManagementFactory.getPlatformMBeanServer(); Set<ObjectInstance> objectInstances = platformMBeanServer.queryMBeans(new ObjectName("Ratis:*"), null); Assert.assertEquals(NUM_SERVERS, objectInstances.size()); for (ObjectInstance instance : objectInstances) { Object groupId = platformMBeanServer.getAttribute(instance.getObjectName(), "GroupId"); Assert.assertEquals(cluster.getGroupId().toString(), groupId); } cluster.shutdown(); } @Test(timeout = 30000) public void testRegister() throws JMException { { final JmxRegister jmx = new JmxRegister(); runUnregister(false, jmx); runRegister(true, "abc", jmx); runRegister(false, "abc", jmx); runUnregister(true, jmx); runUnregister(false, jmx); runRegister(true, "abc", jmx); runUnregister(true, jmx); runUnregister(false, jmx); } { final JmxRegister jmx = new JmxRegister(); runRegister(true, "host:1234", jmx); runUnregister(true, jmx); runUnregister(false, jmx); } } static void runRegister(boolean expectToSucceed, String name, JmxRegister jmx) { final RaftServerMXBean mBean = new RaftServerMXBean() { @Override public String getId() { return null; } @Override public String getLeaderId() { return null; } @Override public long getCurrentTerm() { return 0; } @Override public String getGroupId() { return null; } @Override public String getRole() { return null; } @Override public List<String> getFollowers() { return null; } }; final RaftPeerId id = RaftPeerId.valueOf(name); final RaftGroupId groupId = RaftGroupId.randomId(); final boolean succeeded = RaftServerImpl.registerMBean(id, groupId, mBean, jmx); Assert.assertEquals(expectToSucceed, succeeded); } static void runUnregister(boolean expectToSucceed, JmxRegister jmx) throws JMException { final boolean succeeded = jmx.unregister(); Assert.assertEquals(expectToSucceed, succeeded); } }