J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004-2007 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.tools.jconsole; |
| 27 | |
| 28 | import com.sun.management.HotSpotDiagnosticMXBean; |
| 29 | import com.sun.tools.jconsole.JConsoleContext; |
| 30 | import com.sun.tools.jconsole.JConsoleContext.ConnectionState; |
| 31 | import java.awt.Component; |
| 32 | import java.beans.PropertyChangeListener; |
| 33 | import java.beans.PropertyChangeEvent; |
| 34 | import java.io.IOException; |
| 35 | import java.lang.management.*; |
| 36 | import static java.lang.management.ManagementFactory.*; |
| 37 | import java.lang.ref.WeakReference; |
| 38 | import java.lang.reflect.*; |
| 39 | import java.rmi.*; |
| 40 | import java.rmi.registry.*; |
| 41 | import java.rmi.server.*; |
| 42 | import java.util.*; |
| 43 | import javax.management.*; |
| 44 | import javax.management.remote.*; |
| 45 | import javax.management.remote.rmi.*; |
| 46 | import javax.rmi.ssl.SslRMIClientSocketFactory; |
| 47 | import javax.swing.event.SwingPropertyChangeSupport; |
| 48 | import sun.rmi.server.UnicastRef2; |
| 49 | import sun.rmi.transport.LiveRef; |
| 50 | |
| 51 | public class ProxyClient implements JConsoleContext { |
| 52 | |
| 53 | private ConnectionState connectionState = ConnectionState.DISCONNECTED; |
| 54 | |
| 55 | // The SwingPropertyChangeSupport will fire events on the EDT |
| 56 | private SwingPropertyChangeSupport propertyChangeSupport = |
| 57 | new SwingPropertyChangeSupport(this, true); |
| 58 | |
| 59 | private static Map<String, ProxyClient> cache = |
| 60 | Collections.synchronizedMap(new HashMap<String, ProxyClient>()); |
| 61 | |
| 62 | private volatile boolean isDead = true; |
| 63 | private String hostName = null; |
| 64 | private int port = 0; |
| 65 | private String userName = null; |
| 66 | private String password = null; |
| 67 | private boolean hasPlatformMXBeans = false; |
| 68 | private boolean hasHotSpotDiagnosticMXBean= false; |
| 69 | private boolean hasCompilationMXBean = false; |
| 70 | private boolean supportsLockUsage = false; |
| 71 | |
| 72 | // REVISIT: VMPanel and other places relying using getUrl(). |
| 73 | |
| 74 | // set only if it's created for local monitoring |
| 75 | private LocalVirtualMachine lvm; |
| 76 | |
| 77 | // set only if it's created from a given URL via the Advanced tab |
| 78 | private String advancedUrl = null; |
| 79 | |
| 80 | private JMXServiceURL jmxUrl = null; |
| 81 | private SnapshotMBeanServerConnection server = null; |
| 82 | private JMXConnector jmxc = null; |
| 83 | private RMIServer stub = null; |
| 84 | private static final SslRMIClientSocketFactory sslRMIClientSocketFactory = |
| 85 | new SslRMIClientSocketFactory(); |
| 86 | private String registryHostName = null; |
| 87 | private int registryPort = 0; |
| 88 | private boolean vmConnector = false; |
| 89 | private boolean sslRegistry = false; |
| 90 | private boolean sslStub = false; |
| 91 | final private String connectionName; |
| 92 | final private String displayName; |
| 93 | |
| 94 | private ClassLoadingMXBean classLoadingMBean = null; |
| 95 | private CompilationMXBean compilationMBean = null; |
| 96 | private MemoryMXBean memoryMBean = null; |
| 97 | private OperatingSystemMXBean operatingSystemMBean = null; |
| 98 | private RuntimeMXBean runtimeMBean = null; |
| 99 | private ThreadMXBean threadMBean = null; |
| 100 | |
| 101 | private com.sun.management.OperatingSystemMXBean sunOperatingSystemMXBean = null; |
| 102 | private HotSpotDiagnosticMXBean hotspotDiagnosticMXBean = null; |
| 103 | |
| 104 | private List<MemoryPoolProxy> memoryPoolProxies = null; |
| 105 | private List<GarbageCollectorMXBean> garbageCollectorMBeans = null; |
| 106 | private String detectDeadlocksOperation = null; |
| 107 | |
| 108 | final static private String HOTSPOT_DIAGNOSTIC_MXBEAN_NAME = |
| 109 | "com.sun.management:type=HotSpotDiagnostic"; |
| 110 | |
| 111 | private ProxyClient(String hostName, int port, |
| 112 | String userName, String password) throws IOException { |
| 113 | this.connectionName = getConnectionName(hostName, port, userName); |
| 114 | this.displayName = connectionName; |
| 115 | if (hostName.equals("localhost") && port == 0) { |
| 116 | // Monitor self |
| 117 | this.hostName = hostName; |
| 118 | this.port = port; |
| 119 | } else { |
| 120 | // Create an RMI connector client and connect it to |
| 121 | // the RMI connector server |
| 122 | final String urlPath = "/jndi/rmi://" + hostName + ":" + port + |
| 123 | "/jmxrmi"; |
| 124 | JMXServiceURL url = new JMXServiceURL("rmi", "", 0, urlPath); |
| 125 | setParameters(url, userName, password); |
| 126 | vmConnector = true; |
| 127 | registryHostName = hostName; |
| 128 | registryPort = port; |
| 129 | checkSslConfig(); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | private ProxyClient(String url, |
| 134 | String userName, String password) throws IOException { |
| 135 | this.advancedUrl = url; |
| 136 | this.connectionName = getConnectionName(url, userName); |
| 137 | this.displayName = connectionName; |
| 138 | setParameters(new JMXServiceURL(url), userName, password); |
| 139 | } |
| 140 | |
| 141 | private ProxyClient(LocalVirtualMachine lvm) throws IOException { |
| 142 | this.lvm = lvm; |
| 143 | this.connectionName = getConnectionName(lvm); |
| 144 | this.displayName = "pid: " + lvm.vmid() + " " + lvm.displayName(); |
| 145 | } |
| 146 | |
| 147 | private void setParameters(JMXServiceURL url, String userName, String password) { |
| 148 | this.jmxUrl = url; |
| 149 | this.hostName = jmxUrl.getHost(); |
| 150 | this.port = jmxUrl.getPort(); |
| 151 | this.userName = userName; |
| 152 | this.password = password; |
| 153 | } |
| 154 | |
| 155 | private static void checkStub(Remote stub, |
| 156 | Class<? extends Remote> stubClass) { |
| 157 | // Check remote stub is from the expected class. |
| 158 | // |
| 159 | if (stub.getClass() != stubClass) { |
| 160 | if (!Proxy.isProxyClass(stub.getClass())) { |
| 161 | throw new SecurityException( |
| 162 | "Expecting a " + stubClass.getName() + " stub!"); |
| 163 | } else { |
| 164 | InvocationHandler handler = Proxy.getInvocationHandler(stub); |
| 165 | if (handler.getClass() != RemoteObjectInvocationHandler.class) { |
| 166 | throw new SecurityException( |
| 167 | "Expecting a dynamic proxy instance with a " + |
| 168 | RemoteObjectInvocationHandler.class.getName() + |
| 169 | " invocation handler!"); |
| 170 | } else { |
| 171 | stub = (Remote) handler; |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | // Check RemoteRef in stub is from the expected class |
| 176 | // "sun.rmi.server.UnicastRef2". |
| 177 | // |
| 178 | RemoteRef ref = ((RemoteObject)stub).getRef(); |
| 179 | if (ref.getClass() != UnicastRef2.class) { |
| 180 | throw new SecurityException( |
| 181 | "Expecting a " + UnicastRef2.class.getName() + |
| 182 | " remote reference in stub!"); |
| 183 | } |
| 184 | // Check RMIClientSocketFactory in stub is from the expected class |
| 185 | // "javax.rmi.ssl.SslRMIClientSocketFactory". |
| 186 | // |
| 187 | LiveRef liveRef = ((UnicastRef2)ref).getLiveRef(); |
| 188 | RMIClientSocketFactory csf = liveRef.getClientSocketFactory(); |
| 189 | if (csf == null || csf.getClass() != SslRMIClientSocketFactory.class) { |
| 190 | throw new SecurityException( |
| 191 | "Expecting a " + SslRMIClientSocketFactory.class.getName() + |
| 192 | " RMI client socket factory in stub!"); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | private static final String rmiServerImplStubClassName = |
| 197 | "javax.management.remote.rmi.RMIServerImpl_Stub"; |
| 198 | private static final Class<? extends Remote> rmiServerImplStubClass; |
| 199 | |
| 200 | static { |
| 201 | // FIXME: RMIServerImpl_Stub is generated at build time |
| 202 | // after jconsole is built. We need to investigate if |
| 203 | // the Makefile can be fixed to build jconsole in the |
| 204 | // right order. As a workaround for now, we dynamically |
| 205 | // load RMIServerImpl_Stub class instead of statically |
| 206 | // referencing it. |
| 207 | Class<? extends Remote> serverStubClass = null; |
| 208 | try { |
| 209 | serverStubClass = Class.forName(rmiServerImplStubClassName).asSubclass(Remote.class); |
| 210 | } catch (ClassNotFoundException e) { |
| 211 | // should never reach here |
| 212 | throw (InternalError) new InternalError(e.getMessage()).initCause(e); |
| 213 | } |
| 214 | rmiServerImplStubClass = serverStubClass; |
| 215 | } |
| 216 | |
| 217 | private void checkSslConfig() throws IOException { |
| 218 | // Get the reference to the RMI Registry and lookup RMIServer stub |
| 219 | // |
| 220 | Registry registry; |
| 221 | try { |
| 222 | registry = |
| 223 | LocateRegistry.getRegistry(registryHostName, registryPort, |
| 224 | sslRMIClientSocketFactory); |
| 225 | try { |
| 226 | stub = (RMIServer) registry.lookup("jmxrmi"); |
| 227 | } catch (NotBoundException nbe) { |
| 228 | throw (IOException) |
| 229 | new IOException(nbe.getMessage()).initCause(nbe); |
| 230 | } |
| 231 | sslRegistry = true; |
| 232 | } catch (IOException e) { |
| 233 | registry = |
| 234 | LocateRegistry.getRegistry(registryHostName, registryPort); |
| 235 | try { |
| 236 | stub = (RMIServer) registry.lookup("jmxrmi"); |
| 237 | } catch (NotBoundException nbe) { |
| 238 | throw (IOException) |
| 239 | new IOException(nbe.getMessage()).initCause(nbe); |
| 240 | } |
| 241 | sslRegistry = false; |
| 242 | } |
| 243 | // Perform the checks for secure stub |
| 244 | // |
| 245 | try { |
| 246 | checkStub(stub, rmiServerImplStubClass); |
| 247 | sslStub = true; |
| 248 | } catch (SecurityException e) { |
| 249 | sslStub = false; |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Returns true if the underlying RMI registry is SSL-protected. |
| 255 | * |
| 256 | * @exception UnsupportedOperationException If this {@code ProxyClient} |
| 257 | * does not denote a JMX connector for a JMX VM agent. |
| 258 | */ |
| 259 | public boolean isSslRmiRegistry() { |
| 260 | // Check for VM connector |
| 261 | // |
| 262 | if (!isVmConnector()) { |
| 263 | throw new UnsupportedOperationException( |
| 264 | "ProxyClient.isSslRmiRegistry() is only supported if this " + |
| 265 | "ProxyClient is a JMX connector for a JMX VM agent"); |
| 266 | } |
| 267 | return sslRegistry; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * Returns true if the retrieved RMI stub is SSL-protected. |
| 272 | * |
| 273 | * @exception UnsupportedOperationException If this {@code ProxyClient} |
| 274 | * does not denote a JMX connector for a JMX VM agent. |
| 275 | */ |
| 276 | public boolean isSslRmiStub() { |
| 277 | // Check for VM connector |
| 278 | // |
| 279 | if (!isVmConnector()) { |
| 280 | throw new UnsupportedOperationException( |
| 281 | "ProxyClient.isSslRmiStub() is only supported if this " + |
| 282 | "ProxyClient is a JMX connector for a JMX VM agent"); |
| 283 | } |
| 284 | return sslStub; |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * Returns true if this {@code ProxyClient} denotes |
| 289 | * a JMX connector for a JMX VM agent. |
| 290 | */ |
| 291 | public boolean isVmConnector() { |
| 292 | return vmConnector; |
| 293 | } |
| 294 | |
| 295 | private void setConnectionState(ConnectionState state) { |
| 296 | ConnectionState oldState = this.connectionState; |
| 297 | this.connectionState = state; |
| 298 | propertyChangeSupport.firePropertyChange(CONNECTION_STATE_PROPERTY, |
| 299 | oldState, state); |
| 300 | } |
| 301 | |
| 302 | public ConnectionState getConnectionState() { |
| 303 | return this.connectionState; |
| 304 | } |
| 305 | |
| 306 | void flush() { |
| 307 | if (server != null) { |
| 308 | server.flush(); |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | void connect() { |
| 313 | setConnectionState(ConnectionState.CONNECTING); |
| 314 | try { |
| 315 | tryConnect(); |
| 316 | setConnectionState(ConnectionState.CONNECTED); |
| 317 | } catch (Exception e) { |
| 318 | if (JConsole.isDebug()) { |
| 319 | e.printStackTrace(); |
| 320 | } |
| 321 | setConnectionState(ConnectionState.DISCONNECTED); |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | private void tryConnect() throws IOException { |
| 326 | if (jmxUrl == null && "localhost".equals(hostName) && port == 0) { |
| 327 | // Monitor self |
| 328 | this.jmxc = null; |
| 329 | this.server = Snapshot.newSnapshot( |
| 330 | ManagementFactory.getPlatformMBeanServer()); |
| 331 | } else { |
| 332 | // Monitor another process |
| 333 | if (lvm != null) { |
| 334 | if (!lvm.isManageable()) { |
| 335 | lvm.startManagementAgent(); |
| 336 | if (!lvm.isManageable()) { |
| 337 | // FIXME: what to throw |
| 338 | throw new IOException(lvm + "not manageable"); |
| 339 | } |
| 340 | } |
| 341 | if (this.jmxUrl == null) { |
| 342 | this.jmxUrl = new JMXServiceURL(lvm.connectorAddress()); |
| 343 | } |
| 344 | } |
| 345 | // Need to pass in credentials ? |
| 346 | if (userName == null && password == null) { |
| 347 | if (isVmConnector()) { |
| 348 | // Check for SSL config on reconnection only |
| 349 | if (stub == null) { |
| 350 | checkSslConfig(); |
| 351 | } |
| 352 | this.jmxc = new RMIConnector(stub, null); |
| 353 | jmxc.connect(); |
| 354 | } else { |
| 355 | this.jmxc = JMXConnectorFactory.connect(jmxUrl); |
| 356 | } |
| 357 | } else { |
| 358 | Map<String, String[]> env = new HashMap<String, String[]>(); |
| 359 | env.put(JMXConnector.CREDENTIALS, |
| 360 | new String[] {userName, password}); |
| 361 | if (isVmConnector()) { |
| 362 | // Check for SSL config on reconnection only |
| 363 | if (stub == null) { |
| 364 | checkSslConfig(); |
| 365 | } |
| 366 | this.jmxc = new RMIConnector(stub, null); |
| 367 | jmxc.connect(env); |
| 368 | } else { |
| 369 | this.jmxc = JMXConnectorFactory.connect(jmxUrl, env); |
| 370 | } |
| 371 | } |
| 372 | this.server = Snapshot.newSnapshot(jmxc.getMBeanServerConnection()); |
| 373 | } |
| 374 | this.isDead = false; |
| 375 | |
| 376 | try { |
| 377 | ObjectName on = new ObjectName(THREAD_MXBEAN_NAME); |
| 378 | this.hasPlatformMXBeans = server.isRegistered(on); |
| 379 | this.hasHotSpotDiagnosticMXBean = |
| 380 | server.isRegistered(new ObjectName(HOTSPOT_DIAGNOSTIC_MXBEAN_NAME)); |
| 381 | // check if it has 6.0 new APIs |
| 382 | if (this.hasPlatformMXBeans) { |
| 383 | MBeanOperationInfo[] mopis = server.getMBeanInfo(on).getOperations(); |
| 384 | // look for findDeadlockedThreads operations; |
| 385 | for (MBeanOperationInfo op : mopis) { |
| 386 | if (op.getName().equals("findDeadlockedThreads")) { |
| 387 | this.supportsLockUsage = true; |
| 388 | break; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | on = new ObjectName(COMPILATION_MXBEAN_NAME); |
| 393 | this.hasCompilationMXBean = server.isRegistered(on); |
| 394 | } |
| 395 | } catch (MalformedObjectNameException e) { |
| 396 | // should not reach here |
| 397 | throw new InternalError(e.getMessage()); |
| 398 | } catch (IntrospectionException e) { |
| 399 | InternalError ie = new InternalError(e.getMessage()); |
| 400 | ie.initCause(e); |
| 401 | throw ie; |
| 402 | } catch (InstanceNotFoundException e) { |
| 403 | InternalError ie = new InternalError(e.getMessage()); |
| 404 | ie.initCause(e); |
| 405 | throw ie; |
| 406 | } catch (ReflectionException e) { |
| 407 | InternalError ie = new InternalError(e.getMessage()); |
| 408 | ie.initCause(e); |
| 409 | throw ie; |
| 410 | } |
| 411 | |
| 412 | if (hasPlatformMXBeans) { |
| 413 | // WORKAROUND for bug 5056632 |
| 414 | // Check if the access role is correct by getting a RuntimeMXBean |
| 415 | getRuntimeMXBean(); |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * Gets a proxy client for a given local virtual machine. |
| 421 | */ |
| 422 | public static ProxyClient getProxyClient(LocalVirtualMachine lvm) |
| 423 | throws IOException { |
| 424 | final String key = getCacheKey(lvm); |
| 425 | ProxyClient proxyClient = cache.get(key); |
| 426 | if (proxyClient == null) { |
| 427 | proxyClient = new ProxyClient(lvm); |
| 428 | cache.put(key, proxyClient); |
| 429 | } |
| 430 | return proxyClient; |
| 431 | } |
| 432 | |
| 433 | public static String getConnectionName(LocalVirtualMachine lvm) { |
| 434 | return Integer.toString(lvm.vmid()); |
| 435 | } |
| 436 | |
| 437 | private static String getCacheKey(LocalVirtualMachine lvm) { |
| 438 | return Integer.toString(lvm.vmid()); |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * Gets a proxy client for a given JMXServiceURL. |
| 443 | */ |
| 444 | public static ProxyClient getProxyClient(String url, |
| 445 | String userName, String password) |
| 446 | throws IOException { |
| 447 | final String key = getCacheKey(url, userName, password); |
| 448 | ProxyClient proxyClient = cache.get(key); |
| 449 | if (proxyClient == null) { |
| 450 | proxyClient = new ProxyClient(url, userName, password); |
| 451 | cache.put(key, proxyClient); |
| 452 | } |
| 453 | return proxyClient; |
| 454 | } |
| 455 | |
| 456 | public static String getConnectionName(String url, |
| 457 | String userName) { |
| 458 | if (userName != null && userName.length() > 0) { |
| 459 | return userName + "@" + url; |
| 460 | } else { |
| 461 | return url; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | private static String getCacheKey(String url, |
| 466 | String userName, String password) { |
| 467 | return (url == null ? "" : url) + ":" + |
| 468 | (userName == null ? "" : userName) + ":" + |
| 469 | (password == null ? "" : password); |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * Gets a proxy client for a given "hostname:port". |
| 474 | */ |
| 475 | public static ProxyClient getProxyClient(String hostName, int port, |
| 476 | String userName, String password) |
| 477 | throws IOException { |
| 478 | final String key = getCacheKey(hostName, port, userName, password); |
| 479 | ProxyClient proxyClient = cache.get(key); |
| 480 | if (proxyClient == null) { |
| 481 | proxyClient = new ProxyClient(hostName, port, userName, password); |
| 482 | cache.put(key, proxyClient); |
| 483 | } |
| 484 | return proxyClient; |
| 485 | } |
| 486 | |
| 487 | public static String getConnectionName(String hostName, int port, |
| 488 | String userName) { |
| 489 | String name = hostName + ":" + port; |
| 490 | if (userName != null && userName.length() > 0) { |
| 491 | return userName + "@" + name; |
| 492 | } else { |
| 493 | return name; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | private static String getCacheKey(String hostName, int port, |
| 498 | String userName, String password) { |
| 499 | return (hostName == null ? "" : hostName) + ":" + |
| 500 | port + ":" + |
| 501 | (userName == null ? "" : userName) + ":" + |
| 502 | (password == null ? "" : password); |
| 503 | } |
| 504 | |
| 505 | public String connectionName() { |
| 506 | return connectionName; |
| 507 | } |
| 508 | |
| 509 | public String getDisplayName() { |
| 510 | return displayName; |
| 511 | } |
| 512 | |
| 513 | public String toString() { |
| 514 | if (!isConnected()) { |
| 515 | return Resources.getText("ConnectionName (disconnected)", displayName); |
| 516 | } else { |
| 517 | return displayName; |
| 518 | } |
| 519 | } |
| 520 | |
| 521 | public MBeanServerConnection getMBeanServerConnection() { |
| 522 | return server; |
| 523 | } |
| 524 | |
| 525 | public String getUrl() { |
| 526 | return advancedUrl; |
| 527 | } |
| 528 | |
| 529 | public String getHostName() { |
| 530 | return hostName; |
| 531 | } |
| 532 | |
| 533 | public int getPort() { |
| 534 | return port; |
| 535 | } |
| 536 | |
| 537 | public int getVmid() { |
| 538 | return (lvm != null) ? lvm.vmid() : 0; |
| 539 | } |
| 540 | |
| 541 | public String getUserName() { |
| 542 | return userName; |
| 543 | } |
| 544 | |
| 545 | public String getPassword() { |
| 546 | return password; |
| 547 | } |
| 548 | |
| 549 | public void disconnect() { |
| 550 | // Reset remote stub |
| 551 | stub = null; |
| 552 | // Close MBeanServer connection |
| 553 | if (jmxc != null) { |
| 554 | try { |
| 555 | jmxc.close(); |
| 556 | } catch (IOException e) { |
| 557 | // Ignore ??? |
| 558 | } |
| 559 | } |
| 560 | // Reset platform MBean references |
| 561 | classLoadingMBean = null; |
| 562 | compilationMBean = null; |
| 563 | memoryMBean = null; |
| 564 | operatingSystemMBean = null; |
| 565 | runtimeMBean = null; |
| 566 | threadMBean = null; |
| 567 | sunOperatingSystemMXBean = null; |
| 568 | garbageCollectorMBeans = null; |
| 569 | // Set connection state to DISCONNECTED |
| 570 | if (!isDead) { |
| 571 | isDead = true; |
| 572 | setConnectionState(ConnectionState.DISCONNECTED); |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | /** |
| 577 | * Returns the list of domains in which any MBean is |
| 578 | * currently registered. |
| 579 | */ |
| 580 | public String[] getDomains() throws IOException { |
| 581 | return server.getDomains(); |
| 582 | } |
| 583 | |
| 584 | /** |
| 585 | * Returns a map of MBeans with ObjectName as the key and MBeanInfo value |
| 586 | * of a given domain. If domain is <tt>null</tt>, all MBeans |
| 587 | * are returned. If no MBean found, an empty map is returned. |
| 588 | * |
| 589 | */ |
| 590 | public Map<ObjectName, MBeanInfo> getMBeans(String domain) |
| 591 | throws IOException { |
| 592 | |
| 593 | ObjectName name = null; |
| 594 | if (domain != null) { |
| 595 | try { |
| 596 | name = new ObjectName(domain + ":*"); |
| 597 | } catch (MalformedObjectNameException e) { |
| 598 | // should not reach here |
| 599 | assert(false); |
| 600 | } |
| 601 | } |
| 602 | Set mbeans = server.queryNames(name, null); |
| 603 | Map<ObjectName,MBeanInfo> result = |
| 604 | new HashMap<ObjectName,MBeanInfo>(mbeans.size()); |
| 605 | Iterator iterator = mbeans.iterator(); |
| 606 | while (iterator.hasNext()) { |
| 607 | Object object = iterator.next(); |
| 608 | if (object instanceof ObjectName) { |
| 609 | ObjectName o = (ObjectName)object; |
| 610 | try { |
| 611 | MBeanInfo info = server.getMBeanInfo(o); |
| 612 | result.put(o, info); |
| 613 | } catch (IntrospectionException e) { |
| 614 | // TODO: should log the error |
| 615 | } catch (InstanceNotFoundException e) { |
| 616 | // TODO: should log the error |
| 617 | } catch (ReflectionException e) { |
| 618 | // TODO: should log the error |
| 619 | } |
| 620 | } |
| 621 | } |
| 622 | return result; |
| 623 | } |
| 624 | |
| 625 | /** |
| 626 | * Returns a list of attributes of a named MBean. |
| 627 | * |
| 628 | */ |
| 629 | public AttributeList getAttributes(ObjectName name, String[] attributes) |
| 630 | throws IOException { |
| 631 | AttributeList list = null; |
| 632 | try { |
| 633 | list = server.getAttributes(name, attributes); |
| 634 | } catch (InstanceNotFoundException e) { |
| 635 | // TODO: A MBean may have been unregistered. |
| 636 | // need to set up listener to listen for MBeanServerNotification. |
| 637 | } catch (ReflectionException e) { |
| 638 | // TODO: should log the error |
| 639 | } |
| 640 | return list; |
| 641 | } |
| 642 | |
| 643 | /** |
| 644 | * Set the value of a specific attribute of a named MBean. |
| 645 | */ |
| 646 | public void setAttribute(ObjectName name, Attribute attribute) |
| 647 | throws InvalidAttributeValueException, |
| 648 | MBeanException, |
| 649 | IOException { |
| 650 | try { |
| 651 | server.setAttribute(name, attribute); |
| 652 | } catch (InstanceNotFoundException e) { |
| 653 | // TODO: A MBean may have been unregistered. |
| 654 | } catch (AttributeNotFoundException e) { |
| 655 | assert(false); |
| 656 | } catch (ReflectionException e) { |
| 657 | // TODO: should log the error |
| 658 | } |
| 659 | } |
| 660 | |
| 661 | /** |
| 662 | * Invokes an operation of a named MBean. |
| 663 | * |
| 664 | * @throws MBeanException Wraps an exception thrown by |
| 665 | * the MBean's invoked method. |
| 666 | */ |
| 667 | public Object invoke(ObjectName name, String operationName, |
| 668 | Object[] params, String[] signature) |
| 669 | throws IOException, MBeanException { |
| 670 | Object result = null; |
| 671 | try { |
| 672 | result = server.invoke(name, operationName, params, signature); |
| 673 | } catch (InstanceNotFoundException e) { |
| 674 | // TODO: A MBean may have been unregistered. |
| 675 | } catch (ReflectionException e) { |
| 676 | // TODO: should log the error |
| 677 | } |
| 678 | return result; |
| 679 | } |
| 680 | |
| 681 | public synchronized ClassLoadingMXBean getClassLoadingMXBean() throws IOException { |
| 682 | if (hasPlatformMXBeans && classLoadingMBean == null) { |
| 683 | classLoadingMBean = |
| 684 | newPlatformMXBeanProxy(server, CLASS_LOADING_MXBEAN_NAME, |
| 685 | ClassLoadingMXBean.class); |
| 686 | } |
| 687 | return classLoadingMBean; |
| 688 | } |
| 689 | |
| 690 | public synchronized CompilationMXBean getCompilationMXBean() throws IOException { |
| 691 | if (hasCompilationMXBean && compilationMBean == null) { |
| 692 | compilationMBean = |
| 693 | newPlatformMXBeanProxy(server, COMPILATION_MXBEAN_NAME, |
| 694 | CompilationMXBean.class); |
| 695 | } |
| 696 | return compilationMBean; |
| 697 | } |
| 698 | |
| 699 | public Collection<MemoryPoolProxy> getMemoryPoolProxies() |
| 700 | throws IOException { |
| 701 | |
| 702 | // TODO: How to deal with changes to the list?? |
| 703 | if (memoryPoolProxies == null) { |
| 704 | ObjectName poolName = null; |
| 705 | try { |
| 706 | poolName = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",*"); |
| 707 | } catch (MalformedObjectNameException e) { |
| 708 | // should not reach here |
| 709 | assert(false); |
| 710 | } |
| 711 | Set mbeans = server.queryNames(poolName, null); |
| 712 | if (mbeans != null) { |
| 713 | memoryPoolProxies = new ArrayList<MemoryPoolProxy>(); |
| 714 | Iterator iterator = mbeans.iterator(); |
| 715 | while (iterator.hasNext()) { |
| 716 | ObjectName objName = (ObjectName) iterator.next(); |
| 717 | MemoryPoolProxy p = new MemoryPoolProxy(this, objName); |
| 718 | memoryPoolProxies.add(p); |
| 719 | } |
| 720 | } |
| 721 | } |
| 722 | return memoryPoolProxies; |
| 723 | } |
| 724 | |
| 725 | public synchronized Collection<GarbageCollectorMXBean> getGarbageCollectorMXBeans() |
| 726 | throws IOException { |
| 727 | |
| 728 | // TODO: How to deal with changes to the list?? |
| 729 | if (garbageCollectorMBeans == null) { |
| 730 | ObjectName gcName = null; |
| 731 | try { |
| 732 | gcName = new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + ",*"); |
| 733 | } catch (MalformedObjectNameException e) { |
| 734 | // should not reach here |
| 735 | assert(false); |
| 736 | } |
| 737 | Set mbeans = server.queryNames(gcName, null); |
| 738 | if (mbeans != null) { |
| 739 | garbageCollectorMBeans = new ArrayList<GarbageCollectorMXBean>(); |
| 740 | Iterator iterator = mbeans.iterator(); |
| 741 | while (iterator.hasNext()) { |
| 742 | ObjectName on = (ObjectName) iterator.next(); |
| 743 | String name = GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + |
| 744 | ",name=" + on.getKeyProperty("name"); |
| 745 | |
| 746 | GarbageCollectorMXBean mBean = |
| 747 | newPlatformMXBeanProxy(server, name, |
| 748 | GarbageCollectorMXBean.class); |
| 749 | garbageCollectorMBeans.add(mBean); |
| 750 | } |
| 751 | } |
| 752 | } |
| 753 | return garbageCollectorMBeans; |
| 754 | } |
| 755 | |
| 756 | public synchronized MemoryMXBean getMemoryMXBean() throws IOException { |
| 757 | if (hasPlatformMXBeans && memoryMBean == null) { |
| 758 | memoryMBean = |
| 759 | newPlatformMXBeanProxy(server, MEMORY_MXBEAN_NAME, |
| 760 | MemoryMXBean.class); |
| 761 | } |
| 762 | return memoryMBean; |
| 763 | } |
| 764 | |
| 765 | public synchronized RuntimeMXBean getRuntimeMXBean() throws IOException { |
| 766 | if (hasPlatformMXBeans && runtimeMBean == null) { |
| 767 | runtimeMBean = |
| 768 | newPlatformMXBeanProxy(server, RUNTIME_MXBEAN_NAME, |
| 769 | RuntimeMXBean.class); |
| 770 | } |
| 771 | return runtimeMBean; |
| 772 | } |
| 773 | |
| 774 | |
| 775 | public synchronized ThreadMXBean getThreadMXBean() throws IOException { |
| 776 | if (hasPlatformMXBeans && threadMBean == null) { |
| 777 | threadMBean = |
| 778 | newPlatformMXBeanProxy(server, THREAD_MXBEAN_NAME, |
| 779 | ThreadMXBean.class); |
| 780 | } |
| 781 | return threadMBean; |
| 782 | } |
| 783 | |
| 784 | public synchronized OperatingSystemMXBean getOperatingSystemMXBean() throws IOException { |
| 785 | if (hasPlatformMXBeans && operatingSystemMBean == null) { |
| 786 | operatingSystemMBean = |
| 787 | newPlatformMXBeanProxy(server, OPERATING_SYSTEM_MXBEAN_NAME, |
| 788 | OperatingSystemMXBean.class); |
| 789 | } |
| 790 | return operatingSystemMBean; |
| 791 | } |
| 792 | |
| 793 | public synchronized com.sun.management.OperatingSystemMXBean |
| 794 | getSunOperatingSystemMXBean() throws IOException { |
| 795 | |
| 796 | try { |
| 797 | ObjectName on = new ObjectName(OPERATING_SYSTEM_MXBEAN_NAME); |
| 798 | if (sunOperatingSystemMXBean == null) { |
| 799 | if (server.isInstanceOf(on, |
| 800 | "com.sun.management.OperatingSystemMXBean")) { |
| 801 | sunOperatingSystemMXBean = |
| 802 | newPlatformMXBeanProxy(server, |
| 803 | OPERATING_SYSTEM_MXBEAN_NAME, |
| 804 | com.sun.management.OperatingSystemMXBean.class); |
| 805 | } |
| 806 | } |
| 807 | } catch (InstanceNotFoundException e) { |
| 808 | return null; |
| 809 | } catch (MalformedObjectNameException e) { |
| 810 | return null; // should never reach here |
| 811 | } |
| 812 | return sunOperatingSystemMXBean; |
| 813 | } |
| 814 | |
| 815 | public synchronized HotSpotDiagnosticMXBean getHotSpotDiagnosticMXBean() throws IOException { |
| 816 | if (hasHotSpotDiagnosticMXBean && hotspotDiagnosticMXBean == null) { |
| 817 | hotspotDiagnosticMXBean = |
| 818 | newPlatformMXBeanProxy(server, HOTSPOT_DIAGNOSTIC_MXBEAN_NAME, |
| 819 | HotSpotDiagnosticMXBean.class); |
| 820 | } |
| 821 | return hotspotDiagnosticMXBean; |
| 822 | } |
| 823 | |
| 824 | public <T> T getMXBean(ObjectName objName, Class<T> interfaceClass) |
| 825 | throws IOException { |
| 826 | return newPlatformMXBeanProxy(server, |
| 827 | objName.toString(), |
| 828 | interfaceClass); |
| 829 | |
| 830 | } |
| 831 | |
| 832 | // Return thread IDs of deadlocked threads or null if any. |
| 833 | // It finds deadlocks involving only monitors if it's a Tiger VM. |
| 834 | // Otherwise, it finds deadlocks involving both monitors and |
| 835 | // the concurrent locks. |
| 836 | public long[] findDeadlockedThreads() throws IOException { |
| 837 | ThreadMXBean tm = getThreadMXBean(); |
| 838 | if (supportsLockUsage && tm.isSynchronizerUsageSupported()) { |
| 839 | return tm.findDeadlockedThreads(); |
| 840 | } else { |
| 841 | return tm.findMonitorDeadlockedThreads(); |
| 842 | } |
| 843 | } |
| 844 | |
| 845 | public synchronized void markAsDead() { |
| 846 | disconnect(); |
| 847 | } |
| 848 | |
| 849 | public boolean isDead() { |
| 850 | return isDead; |
| 851 | } |
| 852 | |
| 853 | boolean isConnected() { |
| 854 | return !isDead(); |
| 855 | } |
| 856 | |
| 857 | boolean hasPlatformMXBeans() { |
| 858 | return this.hasPlatformMXBeans; |
| 859 | } |
| 860 | |
| 861 | boolean hasHotSpotDiagnosticMXBean() { |
| 862 | return this.hasHotSpotDiagnosticMXBean; |
| 863 | } |
| 864 | |
| 865 | boolean isLockUsageSupported() { |
| 866 | return supportsLockUsage; |
| 867 | } |
| 868 | |
| 869 | public boolean isRegistered(ObjectName name) throws IOException { |
| 870 | return server.isRegistered(name); |
| 871 | } |
| 872 | |
| 873 | public void addPropertyChangeListener(PropertyChangeListener listener) { |
| 874 | propertyChangeSupport.addPropertyChangeListener(listener); |
| 875 | } |
| 876 | |
| 877 | public void addWeakPropertyChangeListener(PropertyChangeListener listener) { |
| 878 | if (!(listener instanceof WeakPCL)) { |
| 879 | listener = new WeakPCL(listener); |
| 880 | } |
| 881 | propertyChangeSupport.addPropertyChangeListener(listener); |
| 882 | } |
| 883 | |
| 884 | public void removePropertyChangeListener(PropertyChangeListener listener) { |
| 885 | if (!(listener instanceof WeakPCL)) { |
| 886 | // Search for the WeakPCL holding this listener (if any) |
| 887 | for (PropertyChangeListener pcl : propertyChangeSupport.getPropertyChangeListeners()) { |
| 888 | if (pcl instanceof WeakPCL && ((WeakPCL)pcl).get() == listener) { |
| 889 | listener = pcl; |
| 890 | break; |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | propertyChangeSupport.removePropertyChangeListener(listener); |
| 895 | } |
| 896 | |
| 897 | /** |
| 898 | * The PropertyChangeListener is handled via a WeakReference |
| 899 | * so as not to pin down the listener. |
| 900 | */ |
| 901 | private class WeakPCL extends WeakReference<PropertyChangeListener> |
| 902 | implements PropertyChangeListener { |
| 903 | WeakPCL(PropertyChangeListener referent) { |
| 904 | super(referent); |
| 905 | } |
| 906 | |
| 907 | public void propertyChange(PropertyChangeEvent pce) { |
| 908 | PropertyChangeListener pcl = get(); |
| 909 | |
| 910 | if (pcl == null) { |
| 911 | // The referent listener was GC'ed, we're no longer |
| 912 | // interested in PropertyChanges, remove the listener. |
| 913 | dispose(); |
| 914 | } else { |
| 915 | pcl.propertyChange(pce); |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | private void dispose() { |
| 920 | removePropertyChangeListener(this); |
| 921 | } |
| 922 | } |
| 923 | |
| 924 | // |
| 925 | // Snapshot MBeanServerConnection: |
| 926 | // |
| 927 | // This is an object that wraps an existing MBeanServerConnection and adds |
| 928 | // caching to it, as follows: |
| 929 | // |
| 930 | // - The first time an attribute is called in a given MBean, the result is |
| 931 | // cached. Every subsequent time getAttribute is called for that attribute |
| 932 | // the cached result is returned. |
| 933 | // |
| 934 | // - Before every call to VMPanel.update() or when the Refresh button in the |
| 935 | // Attributes table is pressed down the attributes cache is flushed. Then |
| 936 | // any subsequent call to getAttribute will retrieve all the values for |
| 937 | // the attributes that are known to the cache. |
| 938 | // |
| 939 | // - The attributes cache uses a learning approach and only the attributes |
| 940 | // that are in the cache will be retrieved between two subsequent updates. |
| 941 | // |
| 942 | |
| 943 | public interface SnapshotMBeanServerConnection |
| 944 | extends MBeanServerConnection { |
| 945 | /** |
| 946 | * Flush all cached values of attributes. |
| 947 | */ |
| 948 | public void flush(); |
| 949 | } |
| 950 | |
| 951 | public static class Snapshot { |
| 952 | private Snapshot() { |
| 953 | } |
| 954 | public static SnapshotMBeanServerConnection |
| 955 | newSnapshot(MBeanServerConnection mbsc) { |
| 956 | final InvocationHandler ih = new SnapshotInvocationHandler(mbsc); |
| 957 | return (SnapshotMBeanServerConnection) Proxy.newProxyInstance( |
| 958 | Snapshot.class.getClassLoader(), |
| 959 | new Class[] {SnapshotMBeanServerConnection.class}, |
| 960 | ih); |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | static class SnapshotInvocationHandler implements InvocationHandler { |
| 965 | |
| 966 | private final MBeanServerConnection conn; |
| 967 | private Map<ObjectName, NameValueMap> cachedValues = newMap(); |
| 968 | private Map<ObjectName, Set<String>> cachedNames = newMap(); |
| 969 | |
| 970 | @SuppressWarnings("serial") |
| 971 | private static final class NameValueMap |
| 972 | extends HashMap<String, Object> {} |
| 973 | |
| 974 | SnapshotInvocationHandler(MBeanServerConnection conn) { |
| 975 | this.conn = conn; |
| 976 | } |
| 977 | |
| 978 | synchronized void flush() { |
| 979 | cachedValues = newMap(); |
| 980 | } |
| 981 | |
| 982 | public Object invoke(Object proxy, Method method, Object[] args) |
| 983 | throws Throwable { |
| 984 | final String methodName = method.getName(); |
| 985 | if (methodName.equals("getAttribute")) { |
| 986 | return getAttribute((ObjectName) args[0], (String) args[1]); |
| 987 | } else if (methodName.equals("getAttributes")) { |
| 988 | return getAttributes((ObjectName) args[0], (String[]) args[1]); |
| 989 | } else if (methodName.equals("flush")) { |
| 990 | flush(); |
| 991 | return null; |
| 992 | } else { |
| 993 | try { |
| 994 | return method.invoke(conn, args); |
| 995 | } catch (InvocationTargetException e) { |
| 996 | throw e.getCause(); |
| 997 | } |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | private Object getAttribute(ObjectName objName, String attrName) |
| 1002 | throws MBeanException, InstanceNotFoundException, |
| 1003 | AttributeNotFoundException, ReflectionException, IOException { |
| 1004 | final NameValueMap values = getCachedAttributes( |
| 1005 | objName, Collections.singleton(attrName)); |
| 1006 | Object value = values.get(attrName); |
| 1007 | if (value != null || values.containsKey(attrName)) { |
| 1008 | return value; |
| 1009 | } |
| 1010 | // Not in cache, presumably because it was omitted from the |
| 1011 | // getAttributes result because of an exception. Following |
| 1012 | // call will probably provoke the same exception. |
| 1013 | return conn.getAttribute(objName, attrName); |
| 1014 | } |
| 1015 | |
| 1016 | private AttributeList getAttributes( |
| 1017 | ObjectName objName, String[] attrNames) throws |
| 1018 | InstanceNotFoundException, ReflectionException, IOException { |
| 1019 | final NameValueMap values = getCachedAttributes( |
| 1020 | objName, |
| 1021 | new TreeSet<String>(Arrays.asList(attrNames))); |
| 1022 | final AttributeList list = new AttributeList(); |
| 1023 | for (String attrName : attrNames) { |
| 1024 | final Object value = values.get(attrName); |
| 1025 | if (value != null || values.containsKey(attrName)) { |
| 1026 | list.add(new Attribute(attrName, value)); |
| 1027 | } |
| 1028 | } |
| 1029 | return list; |
| 1030 | } |
| 1031 | |
| 1032 | private synchronized NameValueMap getCachedAttributes( |
| 1033 | ObjectName objName, Set<String> attrNames) throws |
| 1034 | InstanceNotFoundException, ReflectionException, IOException { |
| 1035 | NameValueMap values = cachedValues.get(objName); |
| 1036 | if (values != null && values.keySet().containsAll(attrNames)) { |
| 1037 | return values; |
| 1038 | } |
| 1039 | attrNames = new TreeSet<String>(attrNames); |
| 1040 | Set<String> oldNames = cachedNames.get(objName); |
| 1041 | if (oldNames != null) { |
| 1042 | attrNames.addAll(oldNames); |
| 1043 | } |
| 1044 | values = new NameValueMap(); |
| 1045 | final AttributeList attrs = conn.getAttributes( |
| 1046 | objName, |
| 1047 | attrNames.toArray(new String[attrNames.size()])); |
| 1048 | for (Attribute attr : attrs.asList()) { |
| 1049 | values.put(attr.getName(), attr.getValue()); |
| 1050 | } |
| 1051 | cachedValues.put(objName, values); |
| 1052 | cachedNames.put(objName, attrNames); |
| 1053 | return values; |
| 1054 | } |
| 1055 | |
| 1056 | // See http://www.artima.com/weblogs/viewpost.jsp?thread=79394 |
| 1057 | private static <K, V> Map<K, V> newMap() { |
| 1058 | return new HashMap<K, V>(); |
| 1059 | } |
| 1060 | } |
| 1061 | } |