Java tutorial
/** * * 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. */ package org.apache.hadoop.hbase; import java.io.IOException; import javax.management.remote.JMXConnector; import javax.management.remote.JMXConnectorFactory; import javax.naming.ServiceUnavailableException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.client.Admin; import org.apache.hadoop.hbase.coprocessor.CoprocessorHost; import org.apache.hadoop.hbase.coprocessor.MasterCoprocessorEnvironment; import org.apache.hadoop.hbase.coprocessor.ObserverContext; import org.apache.hadoop.hbase.coprocessor.RegionServerCoprocessorEnvironment; import org.apache.hadoop.hbase.security.AccessDeniedException; import org.apache.hadoop.hbase.security.access.AccessController; import org.apache.hadoop.hbase.testclassification.MediumTests; import org.apache.hadoop.hbase.testclassification.MiscTests; import org.junit.After; import org.junit.Assert; import org.junit.Before; import org.junit.Test; import org.junit.experimental.categories.Category; /** * Test case for JMX Connector Server. */ @Category({ MiscTests.class, MediumTests.class }) public class TestJMXConnectorServer { private static final Log LOG = LogFactory.getLog(TestJMXConnectorServer.class); private static HBaseTestingUtility UTIL = new HBaseTestingUtility(); private static Configuration conf = null; private static Admin admin; // RMI registry port private static int rmiRegistryPort = 61120; // Switch for customized Accesscontroller to throw ACD exception while executing test case static boolean hasAccess; @Before public void setUp() throws Exception { UTIL = new HBaseTestingUtility(); conf = UTIL.getConfiguration(); } @After public void tearDown() throws Exception { // Set to true while stopping cluster hasAccess = true; admin.close(); UTIL.shutdownMiniCluster(); } /** * This tests to validate the HMaster's ConnectorServer after unauthorised stopMaster call. */ @Test(timeout = 180000) public void testHMConnectorServerWhenStopMaster() throws Exception { conf.set(CoprocessorHost.MASTER_COPROCESSOR_CONF_KEY, JMXListener.class.getName() + "," + MyAccessController.class.getName()); conf.setInt("master.rmi.registry.port", rmiRegistryPort); UTIL.startMiniCluster(); admin = UTIL.getConnection().getAdmin(); // try to stop master boolean accessDenied = false; try { hasAccess = false; LOG.info("Stopping HMaster..."); admin.stopMaster(); } catch (AccessDeniedException e) { LOG.info("Exception occured while stopping HMaster. ", e); accessDenied = true; } Assert.assertTrue(accessDenied); // Check whether HMaster JMX Connector server can be connected JMXConnector connector = null; try { connector = JMXConnectorFactory .connect(JMXListener.buildJMXServiceURL(rmiRegistryPort, rmiRegistryPort)); } catch (IOException e) { if (e.getCause() instanceof ServiceUnavailableException) { Assert.fail("Can't connect to HMaster ConnectorServer."); } } Assert.assertNotNull("JMXConnector should not be null.", connector); connector.close(); } /** * This tests to validate the RegionServer's ConnectorServer after unauthorised stopRegionServer * call. */ @Test(timeout = 180000) public void testRSConnectorServerWhenStopRegionServer() throws Exception { conf.set(CoprocessorHost.REGIONSERVER_COPROCESSOR_CONF_KEY, JMXListener.class.getName() + "," + MyAccessController.class.getName()); conf.setInt("regionserver.rmi.registry.port", rmiRegistryPort); UTIL.startMiniCluster(); admin = UTIL.getConnection().getAdmin(); hasAccess = false; ServerName serverName = UTIL.getHBaseCluster().getRegionServer(0).getServerName(); LOG.info("Stopping Region Server..."); admin.stopRegionServer(serverName.getHostname() + ":" + serverName.getPort()); // Check whether Region Sever JMX Connector server can be connected JMXConnector connector = null; try { connector = JMXConnectorFactory .connect(JMXListener.buildJMXServiceURL(rmiRegistryPort, rmiRegistryPort)); } catch (IOException e) { if (e.getCause() instanceof ServiceUnavailableException) { Assert.fail("Can't connect to Region Server ConnectorServer."); } } Assert.assertNotNull("JMXConnector should not be null.", connector); connector.close(); } /** * This tests to validate the HMaster's ConnectorServer after unauthorised shutdown call. */ @Test(timeout = 180000) public void testHMConnectorServerWhenShutdownCluster() throws Exception { conf.set(CoprocessorHost.MASTER_COPROCESSOR_CONF_KEY, JMXListener.class.getName() + "," + MyAccessController.class.getName()); conf.setInt("master.rmi.registry.port", rmiRegistryPort); UTIL.startMiniCluster(); admin = UTIL.getConnection().getAdmin(); boolean accessDenied = false; try { hasAccess = false; LOG.info("Stopping HMaster..."); admin.shutdown(); } catch (AccessDeniedException e) { LOG.error("Exception occured while stopping HMaster. ", e); accessDenied = true; } Assert.assertTrue(accessDenied); // Check whether HMaster JMX Connector server can be connected JMXConnector connector = null; try { connector = JMXConnectorFactory .connect(JMXListener.buildJMXServiceURL(rmiRegistryPort, rmiRegistryPort)); } catch (IOException e) { if (e.getCause() instanceof ServiceUnavailableException) { Assert.fail("Can't connect to HMaster ConnectorServer."); } } Assert.assertNotNull("JMXConnector should not be null.", connector); connector.close(); } /* * Customized class for test case execution which will throw ACD exception while executing * stopMaster/preStopRegionServer/preShutdown explicitly. */ public static class MyAccessController extends AccessController { @Override public void preStopMaster(ObserverContext<MasterCoprocessorEnvironment> c) throws IOException { if (!hasAccess) { throw new AccessDeniedException("Insufficient permissions to stop master"); } } @Override public void preStopRegionServer(ObserverContext<RegionServerCoprocessorEnvironment> ctx) throws IOException { if (!hasAccess) { throw new AccessDeniedException("Insufficient permissions to stop region server."); } } @Override public void preShutdown(ObserverContext<MasterCoprocessorEnvironment> c) throws IOException { if (!hasAccess) { throw new AccessDeniedException("Insufficient permissions to shut down cluster."); } } } }