1 /*
   2  * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import java.io.EOFException;
  25 import java.io.File;
  26 import java.io.IOException;
  27 import java.lang.reflect.InvocationTargetException;
  28 import java.lang.reflect.Method;
  29 import java.net.BindException;
  30 import java.net.ConnectException;
  31 import java.net.ServerSocket;
  32 import java.rmi.RemoteException;
  33 import java.rmi.registry.LocateRegistry;
  34 import java.rmi.registry.Registry;
  35 import java.util.ArrayList;
  36 import java.util.Arrays;
  37 import java.util.List;
  38 import java.util.Objects;
  39 import java.util.Set;
  40 import java.util.concurrent.TimeoutException;
  41 import java.util.concurrent.atomic.AtomicBoolean;
  42 
  43 import javax.management.*;
  44 import javax.management.remote.*;
  45 import javax.net.ssl.SSLHandshakeException;
  46 
  47 import jdk.testlibrary.ProcessTools;
  48 import jdk.testlibrary.Utils;
  49 import jdk.internal.agent.Agent;
  50 import jdk.internal.agent.AgentConfigurationError;
  51 import jdk.internal.agent.ConnectorAddressLink;
  52 
  53 /**
  54  * @test
  55  * @bug 7110104
  56  * @key randomness intermittent
  57  * @summary Makes sure that enabling/disabling the management agent through JCMD
  58  *          achieves the desired results
  59  *
  60  * @library /lib/testlibrary
  61  *
  62  * @build jdk.testlibrary.* JMXStartStopTest PortAllocator TestApp ManagementAgentJcmd
  63  * @run main/othervm/timeout=600 -XX:+UsePerfData JMXStartStopTest
  64  */
  65 public class JMXStartStopTest {
  66     private static final String TEST_APP_NAME = "TestApp";
  67 
  68     private static final String TEST_SRC = System.getProperty("test.src");
  69 
  70     private static final boolean verbose = false;
  71 
  72     private static ManagementAgentJcmd jcmd = new ManagementAgentJcmd(TEST_APP_NAME, verbose);
  73 
  74     private static void dbg_print(String msg) {
  75         if (verbose) {
  76             System.out.println("DBG: " + msg);
  77         }
  78     }
  79 
  80     private static int listMBeans(MBeanServerConnection server,
  81             ObjectName pattern,
  82             QueryExp query)
  83             throws Exception {
  84 
  85         Set<ObjectName> names = server.queryNames(pattern,query);
  86         for (ObjectName name : names) {
  87             MBeanInfo info = server.getMBeanInfo(name);
  88             dbg_print("Got MBean: " + name);
  89 
  90             MBeanAttributeInfo[] attrs = info.getAttributes();
  91             if (attrs == null)
  92                 continue;
  93             for (MBeanAttributeInfo attr : attrs) {
  94                 if (attr.isReadable()) {
  95                     server.getAttribute(name, attr.getName());
  96                 }
  97             }
  98         }
  99         return names.size();
 100     }
 101 
 102     private static void testConnectLocal(long pid)
 103             throws Exception {
 104 
 105         String jmxUrlStr = null;
 106 
 107         try {
 108             jmxUrlStr = ConnectorAddressLink.importFrom((int)pid);
 109             dbg_print("Local Service URL: " +jmxUrlStr);
 110             if ( jmxUrlStr == null ) {
 111                 throw new Exception("No Service URL. Local agent not started?");
 112             }
 113 
 114             JMXServiceURL url = new JMXServiceURL(jmxUrlStr);
 115 
 116             JMXConnector c = JMXConnectorFactory.connect(url, null);
 117 
 118             MBeanServerConnection conn = c.getMBeanServerConnection();
 119             ObjectName pattern = new ObjectName("java.lang:type=Memory,*");
 120 
 121             int count = listMBeans(conn,pattern,null);
 122             if (count == 0)
 123                 throw new Exception("Expected at least one matching "+
 124                                     "MBean for "+pattern);
 125 
 126         } catch (IOException e) {
 127             dbg_print("Cannot find process : " + pid);
 128             throw e;
 129         }
 130     }
 131 
 132     private static void testNoConnect(int port) throws Exception {
 133         testNoConnect(port, 0);
 134     }
 135 
 136     private static void testNoConnect(int port, int rmiPort) throws Exception {
 137         try {
 138             testConnect(port, rmiPort);
 139             throw new Exception("Didn't expect the management agent running");
 140         } catch (Exception e) {
 141             Throwable t = e;
 142             while (t != null) {
 143                 if (t instanceof RemoteException ||
 144                     t instanceof SSLHandshakeException ||
 145                     t instanceof ConnectException) {
 146                     break;
 147                 }
 148                 t = t.getCause();
 149             }
 150             if (t == null) {
 151                 throw new Exception("Unexpected exception", e);
 152             }
 153         }
 154     }
 155 
 156     private static void testConnect(int port) throws Exception {
 157         testConnect(port, 0);
 158     }
 159 
 160     private static void testConnect(int port, int rmiPort) throws Exception {
 161         EOFException lastException = null;
 162         // factor adjusted timeout (5 seconds) for the RMI to become available
 163         long timeout = System.currentTimeMillis() + Utils.adjustTimeout(5000);
 164         do {
 165             try {
 166                 doTestConnect(port, rmiPort);
 167                 lastException = null;
 168             } catch (EOFException e) {
 169                 lastException = e;
 170                 System.out.println("Error establishing RMI connection. Retrying in 500ms.");
 171                 Thread.sleep(500);
 172             }
 173         } while (lastException != null && System.currentTimeMillis() < timeout);
 174 
 175         if (lastException != null) {
 176             // didn't manage to get the RMI running in time
 177             // rethrow the exception
 178             throw lastException;
 179         }
 180     }
 181 
 182     private static void doTestConnect(int port, int rmiPort) throws Exception {
 183         dbg_print("RmiRegistry lookup...");
 184 
 185         dbg_print("Using port: " + port);
 186 
 187         dbg_print("Using rmi port: " + rmiPort);
 188 
 189         Registry registry = LocateRegistry.getRegistry(port);
 190 
 191         // "jmxrmi"
 192         String[] relist = registry.list();
 193         for (int i = 0; i < relist.length; ++i) {
 194             dbg_print("Got registry: " + relist[i]);
 195         }
 196 
 197         String jmxUrlStr = (rmiPort != 0) ?
 198             String.format(
 199                         "service:jmx:rmi://localhost:%d/jndi/rmi://localhost:%d/jmxrmi",
 200                         rmiPort,
 201                 port) :
 202             String.format(
 203                         "service:jmx:rmi:///jndi/rmi://localhost:%d/jmxrmi",
 204                         port);
 205 
 206         JMXServiceURL url = new JMXServiceURL(jmxUrlStr);
 207 
 208         JMXConnector c = JMXConnectorFactory.connect(url, null);
 209 
 210         MBeanServerConnection conn = c.getMBeanServerConnection();
 211         ObjectName pattern = new ObjectName("java.lang:type=Memory,*");
 212 
 213         int count = listMBeans(conn,pattern,null);
 214         if (count == 0)
 215             throw new Exception("Expected at least one matching " +
 216                                 "MBean for " + pattern);
 217     }
 218 
 219     private static class Failure {
 220         private final Throwable cause;
 221         private final String msg;
 222 
 223         public Failure(Throwable cause, String msg) {
 224             this.cause = cause;
 225             this.msg = msg;
 226         }
 227 
 228         public Failure(String msg) {
 229             this(null, msg);
 230         }
 231 
 232         public Throwable getCause() {
 233             return cause;
 234         }
 235 
 236         public String getMsg() {
 237             return msg;
 238         }
 239 
 240         @Override
 241         public int hashCode() {
 242             int hash = 7;
 243             hash = 97 * hash + Objects.hashCode(this.cause);
 244             hash = 97 * hash + Objects.hashCode(this.msg);
 245             return hash;
 246         }
 247 
 248         @Override
 249         public boolean equals(Object obj) {
 250             if (obj == null) {
 251                 return false;
 252             }
 253             if (getClass() != obj.getClass()) {
 254                 return false;
 255             }
 256             final Failure other = (Failure) obj;
 257             if (!Objects.equals(this.cause, other.cause)) {
 258                 return false;
 259             }
 260             if (!Objects.equals(this.msg, other.msg)) {
 261                 return false;
 262             }
 263             return true;
 264         }
 265 
 266         @Override
 267         public String toString() {
 268             if (cause != null) {
 269                 return msg + "\n" + cause;
 270             } else {
 271                 return msg;
 272             }
 273         }
 274     }
 275 
 276     private static List<Failure> failures = new ArrayList<>();
 277 
 278     public static void main(String args[]) throws Exception {
 279         for (Method m : JMXStartStopTest.class.getDeclaredMethods()) {
 280             if (m.getName().startsWith("test_")) {
 281                 long t1 = System.currentTimeMillis();
 282                 try {
 283                     boolean retry = false;
 284                     do {
 285                         try {
 286                             m.invoke(null);
 287                             retry = false;
 288                         } catch (InvocationTargetException e) {
 289                             if (e.getCause() instanceof BindException ||
 290                                 e.getCause() instanceof java.rmi.ConnectException) {
 291                                 System.out.println("Failed to allocate ports. Retrying ...");
 292                                 retry = true;
 293                             } else {
 294                                 throw e;
 295                             }
 296                         }
 297                     } while (retry);
 298                     System.out.println("=== PASSED");
 299                 } catch (Throwable e) {
 300                     failures.add(new Failure(e, m.getName() + " failed"));
 301                 } finally {
 302                     System.out.println("(took " + (System.currentTimeMillis() - t1) + "ms)\n");
 303                 }
 304             }
 305         }
 306 
 307         if (!failures.isEmpty()) {
 308             for(Failure f : failures) {
 309                 System.err.println(f.getMsg());
 310                 f.getCause().printStackTrace(System.err);
 311             }
 312             throw new Error();
 313         }
 314     }
 315 
 316     private static class TestAppRun {
 317         private Process p;
 318         private final ProcessBuilder pb;
 319         private final String name;
 320         private final AtomicBoolean started = new AtomicBoolean(false);
 321         private volatile long pid = -1;
 322 
 323         public TestAppRun(ProcessBuilder pb, String name) {
 324             this.pb = pb;
 325             this.name = name;
 326         }
 327 
 328         public synchronized void start() throws InterruptedException, IOException, TimeoutException {
 329             if (started.compareAndSet(false, true)) {
 330                 try {
 331                     AtomicBoolean error = new AtomicBoolean(false);
 332                     p = ProcessTools.startProcess(
 333                             TEST_APP_NAME + "{" + name + "}",
 334                             pb,
 335                             (line) -> {
 336                                 boolean ok = line.equals("main enter");
 337                                 error.set(line.contains("BindException"));
 338 
 339                                 return ok || error.get();
 340                             }
 341                     );
 342                     if (error.get()) {
 343                         throw new BindException("Starting process failed due to " +
 344                                                 "the requested port not being available");
 345                     }
 346                     pid = p.getPid();
 347                 } catch (TimeoutException e) {
 348                     if (p != null) {
 349                         p.destroy();
 350                         p.waitFor();
 351                     }
 352                     throw e;
 353                 }
 354             }
 355         }
 356 
 357         public long getPid() {
 358             return pid;
 359         }
 360 
 361         public synchronized void stop()
 362                 throws IOException, InterruptedException {
 363             if (started.compareAndSet(true, false)) {
 364                 p.getOutputStream().write(0);
 365                 p.getOutputStream().flush();
 366                 int ec = p.waitFor();
 367                 if (ec != 0) {
 368                     StringBuilder msg = new StringBuilder();
 369                     msg.append("Test application '").append(name);
 370                     msg.append("' failed with exit code: ");
 371                     msg.append(ec);
 372 
 373                     failures.add(new Failure(msg.toString()));
 374                 }
 375             }
 376         }
 377     }
 378 
 379     /**
 380      * Runs the test application "TestApp"
 381      * @param name Test run name
 382      * @param args Additional arguments
 383      * @return Returns a {@linkplain TestAppRun} instance representing the run
 384      * @throws IOException
 385      * @throws InterruptedException
 386      * @throws TimeoutException
 387      */
 388     private static TestAppRun doTest(String name, String ... args)
 389             throws Exception {
 390         List<String> pbArgs = new ArrayList<>(Arrays.asList(
 391                 "-cp",
 392                 System.getProperty("test.class.path"),
 393                 "-XX:+UsePerfData"
 394         ));
 395         pbArgs.addAll(Arrays.asList(args));
 396         pbArgs.add(TEST_APP_NAME);
 397 
 398         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
 399                 pbArgs.toArray(new String[pbArgs.size()])
 400         );
 401         TestAppRun s = new TestAppRun(pb, name);
 402         s.start();
 403         return s;
 404     }
 405 
 406     static void test_01() throws Exception {
 407         // Run an app with JMX enabled stop it and
 408         // restart on other port
 409 
 410         System.out.println("**** Test one ****");
 411         int ports[] = PortAllocator.allocatePorts(2);
 412 
 413         TestAppRun s = doTest(
 414                 "test_01",
 415                 "-Dcom.sun.management.jmxremote.port=" + ports[0],
 416                 "-Dcom.sun.management.jmxremote.authenticate=false",
 417                 "-Dcom.sun.management.jmxremote.ssl=false");
 418 
 419         try {
 420             testConnect(ports[0]);
 421 
 422             jcmd.stop();
 423             testNoConnect(ports[0]);
 424 
 425             jcmd.start("jmxremote.port=" + ports[1]);
 426             testConnect(ports[1]);
 427         } finally {
 428             s.stop();
 429         }
 430     }
 431 
 432     static void test_02() throws Exception {
 433         // Run an app without JMX enabled
 434         // start JMX by jcmd
 435 
 436         System.out.println("**** Test two ****");
 437 
 438         int[] ports = PortAllocator.allocatePorts(1);
 439         TestAppRun s = doTest("test_02");
 440         try {
 441             jcmd.start(
 442                 "jmxremote.port=" + ports[0],
 443                 "jmxremote.authenticate=false",
 444                 "jmxremote.ssl=false"
 445             );
 446 
 447             testConnect(ports[0]);
 448         } finally {
 449 //            debugPortUsage(pa);
 450             s.stop();
 451         }
 452     }
 453 
 454     static void test_03() throws Exception {
 455         // Run an app without JMX enabled
 456         // start JMX by jcmd on one port than on other one
 457 
 458         System.out.println("**** Test three ****");
 459 
 460         int[] ports = PortAllocator.allocatePorts(2);
 461         TestAppRun s = doTest("test_03");
 462         try {
 463             jcmd.start(
 464                 "jmxremote.port=" + ports[0],
 465                 "jmxremote.authenticate=false",
 466                 "jmxremote.ssl=false"
 467             );
 468 
 469             // Second agent shouldn't start
 470             jcmd.start(
 471                 "jmxremote.port=" + ports[1],
 472                 "jmxremote.authenticate=false",
 473                 "jmxremote.ssl=false"
 474             );
 475 
 476             // First agent should connect
 477             testConnect(ports[0]);
 478 
 479             // Second agent should not connect
 480             testNoConnect(ports[1]);
 481         } finally {
 482             s.stop();
 483         }
 484     }
 485 
 486     static void test_04() throws Exception {
 487         // Run an app without JMX enabled
 488         // start JMX by jcmd on one port, specify rmi port explicitly
 489 
 490         System.out.println("**** Test four ****");
 491 
 492         int[] ports = PortAllocator.allocatePorts(2);
 493         TestAppRun s = doTest("test_04");
 494         try {
 495             jcmd.start(
 496                 "jmxremote.port=" + ports[0],
 497                 "jmxremote.rmi.port=" + ports[1],
 498                 "jmxremote.authenticate=false",
 499                 "jmxremote.ssl=false"
 500             );
 501 
 502             testConnect(ports[0], ports[1]);
 503         } finally {
 504             s.stop();
 505         }
 506     }
 507 
 508     static void test_05() throws Exception {
 509         // Run an app without JMX enabled, it will enable local server
 510         // but should leave remote server disabled
 511 
 512         System.out.println("**** Test five ****");
 513         int[] ports = PortAllocator.allocatePorts(1);
 514         TestAppRun s = doTest("test_05");
 515         try {
 516             jcmd.startLocal();
 517 
 518             testNoConnect(ports[0]);
 519             testConnectLocal(s.getPid());
 520         } finally {
 521             s.stop();
 522         }
 523     }
 524 
 525     static void test_06() throws Exception {
 526         // Run an app without JMX enabled
 527         // start JMX by jcmd on one port, specify rmi port explicitly
 528         // attempt to start it again with the same port
 529         // Check for valid messages in the output
 530 
 531         System.out.println("**** Test six ****");
 532 
 533         int[] ports = PortAllocator.allocatePorts(2);
 534         TestAppRun s = doTest("test_06");
 535         try {
 536             jcmd.start(
 537                 "jmxremote.port=" + ports[0],
 538                 "jmxremote.authenticate=false",
 539                 "jmxremote.ssl=false"
 540             );
 541 
 542             testConnect(ports[0], ports[1]);
 543 
 544             final AtomicBoolean checks = new AtomicBoolean(false);
 545             jcmd.start(
 546                 line -> {
 547                     if (line.contains("java.lang.RuntimeException: Invalid agent state")) {
 548                         checks.set(true);
 549                     }
 550                 },
 551                 "jmxremote.port=" + ports[0],
 552                 "jmxremote.authenticate=false",
 553                 "jmxremote.ssl=false"
 554             );
 555 
 556             if (!checks.get()) {
 557                 throw new Exception("Starting agent on port " + ports[0] + " should "
 558                         + "report an invalid agent state");
 559             }
 560         } finally {
 561             s.stop();
 562         }
 563     }
 564 
 565     static void test_07() throws Exception {
 566         // Run an app without JMX enabled
 567         // start JMX by jcmd on one port, specify rmi port explicitly
 568         // attempt to start it again with other port
 569         // Check for valid messages in the output
 570 
 571         System.out.println("**** Test seven ****");
 572 
 573         int[] ports = PortAllocator.allocatePorts(2);
 574         TestAppRun s = doTest("test_07");
 575         try {
 576             jcmd.start(
 577                 "jmxremote.port=" + ports[0],
 578                 "jmxremote.authenticate=false",
 579                 "jmxremote.ssl=false"
 580             );
 581 
 582             testConnect(ports[0], ports[1]);
 583 
 584             final AtomicBoolean checks = new AtomicBoolean(false);
 585 
 586             jcmd.start(
 587                 line -> {
 588                     if (line.contains("java.lang.RuntimeException: Invalid agent state")) {
 589                         checks.set(true);
 590                     }
 591                 },
 592                 "jmxremote.port=" + ports[1],
 593                 "jmxremote.authenticate=false",
 594                 "jmxremote.ssl=false"
 595             );
 596 
 597             if (!checks.get()) {
 598                 throw new Exception("Starting agent on poprt " + ports[1] + " should "
 599                         + "report an invalid agent state");
 600             }
 601         } finally {
 602             s.stop();
 603         }
 604     }
 605 
 606     static void test_08() throws Exception {
 607         // Run an app without JMX enabled
 608         // start JMX by jcmd on one port, specify rmi port explicitly
 609         // attempt to stop it twice
 610         // Check for valid messages in the output
 611 
 612         System.out.println("**** Test eight ****");
 613 
 614         int[] ports = PortAllocator.allocatePorts(2);
 615         TestAppRun s = doTest("test_08");
 616         try {
 617             jcmd.start(
 618                 "jmxremote.port=" + ports[0],
 619                 "jmxremote.authenticate=false",
 620                 "jmxremote.ssl=false"
 621             );
 622 
 623             testConnect(ports[0], ports[1]);
 624 
 625             jcmd.stop();
 626             jcmd.stop();
 627         } finally {
 628             s.stop();
 629         }
 630     }
 631 
 632     static void test_09() throws Exception {
 633         // Run an app without JMX enabled
 634         // attempt to start JMX using a non-available port
 635         // Check for valid messages in the output
 636 
 637         System.out.println("**** Test nine ****");
 638 
 639         TestAppRun s = doTest("test_09");
 640 
 641         try (ServerSocket ss = new ServerSocket(0)) {
 642             int localPort = ss.getLocalPort();
 643             int[] ports;
 644             do {
 645                 ports = PortAllocator.allocatePorts(1);
 646             } while (localPort == ports[0]);
 647 
 648             final AtomicBoolean checks = new AtomicBoolean(false);
 649 
 650             int retryCntr = 1;
 651             do {
 652                 final AtomicBoolean retry = new AtomicBoolean(false);
 653 
 654                 try {
 655                     jcmd.start(
 656                         line -> {
 657                             if (line.contains(Agent.getText(AgentConfigurationError.AGENT_EXCEPTION))) {
 658                                 retry.set(true);
 659                             }
 660                         },
 661                         "jmxremote.port=" + ports[0],
 662                         "jmxremote.rmi.port=" + localPort,
 663                         "jmxremote.authenticate=false",
 664                         "jmxremote.ssl=false"
 665                     );
 666                 } catch (BindException e) {
 667                     checks.set(true);
 668                 }
 669                 if (!retry.get()) {
 670                     break;
 671                 }
 672                 System.out.println("Attempt " + retryCntr + " >>>");
 673                 System.out.println("Unexpected reply from the agent. Retrying in 500ms ...");
 674                 Thread.sleep(500);
 675             } while (retryCntr++ < 10);
 676 
 677             if (!checks.get()) {
 678                 throw new Exception("Starting agent on port " + ports[0] + " should "
 679                         + "report port in use");
 680             }
 681         } finally {
 682             s.stop();
 683         }
 684 
 685     }
 686 
 687     static void test_10() throws Exception {
 688         // Run an app without JMX enabled, but with some properties set
 689         // in command line.
 690         // make sure these properties overridden corectly
 691 
 692         System.out.println("**** Test ten ****");
 693 
 694         int[] ports = PortAllocator.allocatePorts(2);
 695         TestAppRun s = doTest(
 696                 "test_10",
 697                 "-Dcom.sun.management.jmxremote.authenticate=false",
 698                 "-Dcom.sun.management.jmxremote.ssl=true");
 699 
 700         try {
 701             testNoConnect(ports[0]);
 702             jcmd.start(
 703                 "jmxremote.port=" + ports[1],
 704                 "jmxremote.authenticate=false",
 705                 "jmxremote.ssl=false"
 706             );
 707             testConnect(ports[1]);
 708         } finally {
 709             s.stop();
 710         }
 711     }
 712 
 713     static void test_11() throws Exception {
 714         // Run an app with JMX enabled and with some properties set
 715         // in command line.
 716         // stop JMX agent and then start it again with different property values
 717         // make sure these properties overridden corectly
 718 
 719         System.out.println("**** Test eleven ****");
 720         int[] ports = PortAllocator.allocatePorts(2);
 721         TestAppRun s = doTest(
 722                 "test_11",
 723                 "-Dcom.sun.management.jmxremote.port=" + ports[0],
 724                 "-Dcom.sun.management.jmxremote.authenticate=false",
 725                 "-Dcom.sun.management.jmxremote.ssl=true");
 726 
 727         try {
 728             testNoConnect(ports[0]);
 729 
 730             jcmd.stop();
 731 
 732             testNoConnect(ports[0]);
 733 
 734             jcmd.start(
 735                 "jmxremote.port=" + ports[1],
 736                 "jmxremote.authenticate=false",
 737                 "jmxremote.ssl=false"
 738             );
 739 
 740             testConnect(ports[1]);
 741         } finally {
 742             s.stop();
 743         }
 744     }
 745 
 746     static void test_12() throws Exception {
 747         // Run an app with JMX enabled and with some properties set
 748         // in command line.
 749         // stop JMX agent and then start it again with different property values
 750         // specifing some property in management config file and some of them
 751         // in command line
 752         // make sure these properties overridden corectly
 753 
 754         System.out.println("**** Test twelve ****");
 755 
 756         int[] ports = PortAllocator.allocatePorts(2);
 757         TestAppRun s = doTest("test_12",
 758                 "-Dcom.sun.management.config.file="
 759                 + TEST_SRC + File.separator + "management_cl.properties",
 760                 "-Dcom.sun.management.jmxremote.authenticate=false"
 761         );
 762 
 763         try {
 764             testNoConnect(ports[0]);
 765 
 766             jcmd.stop();
 767 
 768             testNoConnect(ports[0]);
 769 
 770             jcmd.start(
 771                 "config.file=" + TEST_SRC + File.separator
 772                 + "management_jcmd.properties",
 773                 "jmxremote.authenticate=false",
 774                 "jmxremote.port=" + ports[1]
 775             );
 776 
 777             testConnect(ports[1]);
 778         } finally {
 779             s.stop();
 780         }
 781     }
 782 
 783     static void test_13() throws Exception {
 784         // Run an app with JMX enabled and with some properties set
 785         // in command line.
 786         // stop JMX agent and then start it again with different property values
 787         // stop JMX agent again and then start it without property value
 788         // make sure these properties overridden corectly
 789 
 790         System.out.println("**** Test thirteen ****");
 791         int[] ports = PortAllocator.allocatePorts(1);
 792         TestAppRun s = doTest(
 793                 "test_13",
 794                 "-Dcom.sun.management.jmxremote.port=" + ports[0],
 795                 "-Dcom.sun.management.jmxremote.authenticate=false",
 796                 "-Dcom.sun.management.jmxremote.ssl=true");
 797 
 798         try {
 799             testNoConnect(ports[0]);
 800 
 801             jcmd.stop();
 802             jcmd.start(
 803                 "jmxremote.ssl=false",
 804                 "jmxremote.port=" + ports[0]
 805             );
 806             testConnect(ports[0]);
 807 
 808             jcmd.stop();
 809             jcmd.start(
 810                 "jmxremote.port=" + ports[0]
 811             );
 812 
 813             testNoConnect(ports[0]);
 814         } finally {
 815             s.stop();
 816         }
 817     }
 818 
 819     static void test_14() throws Exception {
 820         // Run an app with JMX enabled
 821         // stop remote agent
 822         // make sure local agent is not affected
 823 
 824         System.out.println("**** Test fourteen ****");
 825         int[] ports = PortAllocator.allocatePorts(1);
 826         TestAppRun s = doTest(
 827                 "test_14",
 828                 "-Dcom.sun.management.jmxremote.port=" + ports[0],
 829                 "-Dcom.sun.management.jmxremote.authenticate=false",
 830                 "-Dcom.sun.management.jmxremote.ssl=false");
 831         try {
 832             testConnect(ports[0]);
 833             jcmd.stop();
 834             testConnectLocal(s.getPid());
 835         } finally {
 836             s.stop();
 837         }
 838     }
 839 
 840     static void test_15() throws Exception {
 841         // Run an app with JMX disabled
 842         // start local agent only
 843 
 844         System.out.println("**** Test fifteen ****");
 845 
 846         int[] ports = PortAllocator.allocatePorts(1);
 847         TestAppRun s = doTest("test_15");
 848 
 849         try {
 850             testNoConnect(ports[0]);
 851             jcmd.startLocal();
 852 
 853             testConnectLocal(s.getPid());
 854 
 855         } finally {
 856             s.stop();
 857         }
 858     }
 859 
 860 }