J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002-2007 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 javax.management.remote.rmi; |
| 27 | |
| 28 | import com.sun.jmx.remote.internal.ClientCommunicatorAdmin; |
| 29 | import com.sun.jmx.remote.internal.ClientListenerInfo; |
| 30 | import com.sun.jmx.remote.internal.ClientNotifForwarder; |
| 31 | import com.sun.jmx.remote.internal.ProxyInputStream; |
| 32 | import com.sun.jmx.remote.internal.ProxyRef; |
| 33 | import com.sun.jmx.remote.util.ClassLogger; |
| 34 | import com.sun.jmx.remote.util.EnvHelp; |
| 35 | import java.io.ByteArrayInputStream; |
| 36 | import java.io.IOException; |
| 37 | import java.io.InputStream; |
| 38 | import java.io.InvalidObjectException; |
| 39 | import java.io.NotSerializableException; |
| 40 | import java.io.ObjectInputStream; |
| 41 | import java.io.ObjectStreamClass; |
| 42 | import java.io.Serializable; |
| 43 | import java.io.WriteAbortedException; |
| 44 | import java.lang.ref.WeakReference; |
| 45 | import java.lang.reflect.Constructor; |
| 46 | import java.lang.reflect.InvocationHandler; |
| 47 | import java.lang.reflect.InvocationTargetException; |
| 48 | import java.lang.reflect.Proxy; |
| 49 | import java.net.MalformedURLException; |
| 50 | import java.rmi.MarshalException; |
| 51 | import java.rmi.MarshalledObject; |
| 52 | import java.rmi.NoSuchObjectException; |
| 53 | import java.rmi.Remote; |
| 54 | import java.rmi.ServerException; |
| 55 | import java.rmi.UnmarshalException; |
| 56 | import java.rmi.server.RMIClientSocketFactory; |
| 57 | import java.rmi.server.RemoteObject; |
| 58 | import java.rmi.server.RemoteObjectInvocationHandler; |
| 59 | import java.rmi.server.RemoteRef; |
| 60 | import java.security.AccessController; |
| 61 | import java.security.PrivilegedAction; |
| 62 | import java.security.PrivilegedExceptionAction; |
| 63 | import java.security.ProtectionDomain; |
| 64 | import java.util.Arrays; |
| 65 | import java.util.Collections; |
| 66 | import java.util.HashMap; |
| 67 | import java.util.Map; |
| 68 | import java.util.Properties; |
| 69 | import java.util.Set; |
| 70 | import java.util.WeakHashMap; |
| 71 | import javax.management.Attribute; |
| 72 | import javax.management.AttributeList; |
| 73 | import javax.management.AttributeNotFoundException; |
| 74 | import javax.management.InstanceAlreadyExistsException; |
| 75 | import javax.management.InstanceNotFoundException; |
| 76 | import javax.management.IntrospectionException; |
| 77 | import javax.management.InvalidAttributeValueException; |
| 78 | import javax.management.ListenerNotFoundException; |
| 79 | import javax.management.MBeanException; |
| 80 | import javax.management.MBeanInfo; |
| 81 | import javax.management.MBeanRegistrationException; |
| 82 | import javax.management.MBeanServerConnection; |
| 83 | import javax.management.MBeanServerDelegate; |
| 84 | import javax.management.MBeanServerNotification; |
| 85 | import javax.management.NotCompliantMBeanException; |
| 86 | import javax.management.Notification; |
| 87 | import javax.management.NotificationBroadcasterSupport; |
| 88 | import javax.management.NotificationFilter; |
| 89 | import javax.management.NotificationFilterSupport; |
| 90 | import javax.management.NotificationListener; |
| 91 | import javax.management.ObjectInstance; |
| 92 | import javax.management.ObjectName; |
| 93 | import javax.management.QueryExp; |
| 94 | import javax.management.ReflectionException; |
| 95 | import javax.management.remote.JMXConnectionNotification; |
| 96 | import javax.management.remote.JMXConnector; |
| 97 | import javax.management.remote.JMXConnectorFactory; |
| 98 | import javax.management.remote.JMXServiceURL; |
| 99 | import javax.management.remote.NotificationResult; |
| 100 | import javax.management.remote.JMXAddressable; |
| 101 | import javax.naming.InitialContext; |
| 102 | import javax.naming.NamingException; |
| 103 | import javax.rmi.CORBA.Stub; |
| 104 | import javax.rmi.PortableRemoteObject; |
| 105 | import javax.rmi.ssl.SslRMIClientSocketFactory; |
| 106 | import javax.security.auth.Subject; |
| 107 | import org.omg.CORBA.BAD_OPERATION; |
| 108 | import org.omg.CORBA.ORB; |
| 109 | import sun.rmi.server.UnicastRef2; |
| 110 | import sun.rmi.transport.LiveRef; |
| 111 | |
| 112 | /** |
| 113 | * <p>A connection to a remote RMI connector. Usually, such |
| 114 | * connections are made using {@link |
| 115 | * javax.management.remote.JMXConnectorFactory JMXConnectorFactory}. |
| 116 | * However, specialized applications can use this class directly, for |
| 117 | * example with an {@link RMIServer} stub obtained without going |
| 118 | * through JNDI.</p> |
| 119 | * |
| 120 | * @since 1.5 |
| 121 | */ |
| 122 | public class RMIConnector implements JMXConnector, Serializable, JMXAddressable { |
| 123 | |
| 124 | private static final ClassLogger logger = |
| 125 | new ClassLogger("javax.management.remote.rmi", "RMIConnector"); |
| 126 | |
| 127 | private static final long serialVersionUID = 817323035842634473L; |
| 128 | |
| 129 | private RMIConnector(RMIServer rmiServer, JMXServiceURL address, |
| 130 | Map<String, ?> environment) { |
| 131 | if (rmiServer == null && address == null) throw new |
| 132 | IllegalArgumentException("rmiServer and jmxServiceURL both null"); |
| 133 | |
| 134 | initTransients(); |
| 135 | |
| 136 | this.rmiServer = rmiServer; |
| 137 | this.jmxServiceURL = address; |
| 138 | if (environment == null) { |
| 139 | this.env = Collections.emptyMap(); |
| 140 | } else { |
| 141 | EnvHelp.checkAttributes(environment); |
| 142 | this.env = Collections.unmodifiableMap(environment); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * <p>Constructs an <code>RMIConnector</code> that will connect |
| 148 | * the RMI connector server with the given address.</p> |
| 149 | * |
| 150 | * <p>The address can refer directly to the connector server, |
| 151 | * using one of the following syntaxes:</p> |
| 152 | * |
| 153 | * <pre> |
| 154 | * service:jmx:rmi://<em>[host[:port]]</em>/stub/<em>encoded-stub</em> |
| 155 | * service:jmx:iiop://<em>[host[:port]]</em>/ior/<em>encoded-IOR</em> |
| 156 | * </pre> |
| 157 | * |
| 158 | * <p>(Here, the square brackets <code>[]</code> are not part of the |
| 159 | * address but indicate that the host and port are optional.)</p> |
| 160 | * |
| 161 | * <p>The address can instead indicate where to find an RMI stub |
| 162 | * through JNDI, using one of the following syntaxes:</p> |
| 163 | * |
| 164 | * <pre> |
| 165 | * service:jmx:rmi://<em>[host[:port]]</em>/jndi/<em>jndi-name</em> |
| 166 | * service:jmx:iiop://<em>[host[:port]]</em>/jndi/<em>jndi-name</em> |
| 167 | * </pre> |
| 168 | * |
| 169 | * <p>An implementation may also recognize additional address |
| 170 | * syntaxes, for example:</p> |
| 171 | * |
| 172 | * <pre> |
| 173 | * service:jmx:iiop://<em>[host[:port]]</em>/stub/<em>encoded-stub</em> |
| 174 | * </pre> |
| 175 | * |
| 176 | * @param url the address of the RMI connector server. |
| 177 | * |
| 178 | * @param environment additional attributes specifying how to make |
| 179 | * the connection. For JNDI-based addresses, these attributes can |
| 180 | * usefully include JNDI attributes recognized by {@link |
| 181 | * InitialContext#InitialContext(Hashtable) InitialContext}. This |
| 182 | * parameter can be null, which is equivalent to an empty Map. |
| 183 | * |
| 184 | * @exception IllegalArgumentException if <code>url</code> |
| 185 | * is null. |
| 186 | */ |
| 187 | public RMIConnector(JMXServiceURL url, Map<String,?> environment) { |
| 188 | this(null, url, environment); |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * <p>Constructs an <code>RMIConnector</code> using the given RMI stub. |
| 193 | * |
| 194 | * @param rmiServer an RMI stub representing the RMI connector server. |
| 195 | * @param environment additional attributes specifying how to make |
| 196 | * the connection. This parameter can be null, which is |
| 197 | * equivalent to an empty Map. |
| 198 | * |
| 199 | * @exception IllegalArgumentException if <code>rmiServer</code> |
| 200 | * is null. |
| 201 | */ |
| 202 | public RMIConnector(RMIServer rmiServer, Map<String,?> environment) { |
| 203 | this(rmiServer, null, environment); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * <p>Returns a string representation of this object. In general, |
| 208 | * the <code>toString</code> method returns a string that |
| 209 | * "textually represents" this object. The result should be a |
| 210 | * concise but informative representation that is easy for a |
| 211 | * person to read.</p> |
| 212 | * |
| 213 | * @return a String representation of this object. |
| 214 | **/ |
| 215 | public String toString() { |
| 216 | final StringBuilder b = new StringBuilder(this.getClass().getName()); |
| 217 | b.append(":"); |
| 218 | if (rmiServer != null) { |
| 219 | b.append(" rmiServer=").append(rmiServer.toString()); |
| 220 | } |
| 221 | if (jmxServiceURL != null) { |
| 222 | if (rmiServer!=null) b.append(","); |
| 223 | b.append(" jmxServiceURL=").append(jmxServiceURL.toString()); |
| 224 | } |
| 225 | return b.toString(); |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * <p>The address of this connector.</p> |
| 230 | * |
| 231 | * @return the address of this connector, or null if it |
| 232 | * does not have one. |
| 233 | * |
| 234 | * @since 1.6 |
| 235 | */ |
| 236 | public JMXServiceURL getAddress() { |
| 237 | return jmxServiceURL; |
| 238 | } |
| 239 | |
| 240 | //-------------------------------------------------------------------- |
| 241 | // implements JMXConnector interface |
| 242 | //-------------------------------------------------------------------- |
| 243 | public void connect() throws IOException { |
| 244 | connect(null); |
| 245 | } |
| 246 | |
| 247 | public synchronized void connect(Map<String,?> environment) |
| 248 | throws IOException { |
| 249 | final boolean tracing = logger.traceOn(); |
| 250 | String idstr = (tracing?"["+this.toString()+"]":null); |
| 251 | |
| 252 | if (terminated) { |
| 253 | logger.trace("connect",idstr + " already closed."); |
| 254 | throw new IOException("Connector closed"); |
| 255 | } |
| 256 | if (connected) { |
| 257 | logger.trace("connect",idstr + " already connected."); |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | try { |
| 262 | if (tracing) logger.trace("connect",idstr + " connecting..."); |
| 263 | |
| 264 | final Map<String, Object> usemap = |
| 265 | new HashMap<String, Object>((this.env==null) ? |
| 266 | Collections.<String, Object>emptyMap() : this.env); |
| 267 | |
| 268 | |
| 269 | if (environment != null) { |
| 270 | EnvHelp.checkAttributes(environment); |
| 271 | usemap.putAll(environment); |
| 272 | } |
| 273 | |
| 274 | // Get RMIServer stub from directory or URL encoding if needed. |
| 275 | if (tracing) logger.trace("connect",idstr + " finding stub..."); |
| 276 | RMIServer stub = (rmiServer!=null)?rmiServer: |
| 277 | findRMIServer(jmxServiceURL, usemap); |
| 278 | |
| 279 | // Check for secure RMIServer stub if the corresponding |
| 280 | // client-side environment property is set to "true". |
| 281 | // |
| 282 | boolean checkStub = EnvHelp.computeBooleanFromString( |
| 283 | usemap, |
| 284 | "jmx.remote.x.check.stub"); |
| 285 | if (checkStub) checkStub(stub, rmiServerImplStubClass); |
| 286 | |
| 287 | // Connect IIOP Stub if needed. |
| 288 | if (tracing) logger.trace("connect",idstr + " connecting stub..."); |
| 289 | stub = connectStub(stub,usemap); |
| 290 | idstr = (tracing?"["+this.toString()+"]":null); |
| 291 | |
| 292 | // Calling newClient on the RMIServer stub. |
| 293 | if (tracing) |
| 294 | logger.trace("connect",idstr + " getting connection..."); |
| 295 | Object credentials = usemap.get(CREDENTIALS); |
| 296 | connection = getConnection(stub, credentials, checkStub); |
| 297 | |
| 298 | // Always use one of: |
| 299 | // ClassLoader provided in Map at connect time, |
| 300 | // or contextClassLoader at connect time. |
| 301 | if (tracing) |
| 302 | logger.trace("connect",idstr + " getting class loader..."); |
| 303 | defaultClassLoader = EnvHelp.resolveClientClassLoader(usemap); |
| 304 | |
| 305 | usemap.put(JMXConnectorFactory.DEFAULT_CLASS_LOADER, |
| 306 | defaultClassLoader); |
| 307 | |
| 308 | rmiNotifClient = new RMINotifClient(defaultClassLoader, usemap); |
| 309 | |
| 310 | env = usemap; |
| 311 | final long checkPeriod = EnvHelp.getConnectionCheckPeriod(usemap); |
| 312 | communicatorAdmin = new RMIClientCommunicatorAdmin(checkPeriod); |
| 313 | |
| 314 | connected = true; |
| 315 | |
| 316 | // The connectionId variable is used in doStart(), when |
| 317 | // reconnecting, to identify the "old" connection. |
| 318 | // |
| 319 | connectionId = getConnectionId(); |
| 320 | |
| 321 | Notification connectedNotif = |
| 322 | new JMXConnectionNotification(JMXConnectionNotification.OPENED, |
| 323 | this, |
| 324 | connectionId, |
| 325 | clientNotifSeqNo++, |
| 326 | "Successful connection", |
| 327 | null); |
| 328 | sendNotification(connectedNotif); |
| 329 | |
| 330 | if (tracing) logger.trace("connect",idstr + " done..."); |
| 331 | } catch (IOException e) { |
| 332 | if (tracing) |
| 333 | logger.trace("connect",idstr + " failed to connect: " + e); |
| 334 | throw e; |
| 335 | } catch (RuntimeException e) { |
| 336 | if (tracing) |
| 337 | logger.trace("connect",idstr + " failed to connect: " + e); |
| 338 | throw e; |
| 339 | } catch (NamingException e) { |
| 340 | final String msg = "Failed to retrieve RMIServer stub: " + e; |
| 341 | if (tracing) logger.trace("connect",idstr + " " + msg); |
| 342 | throw EnvHelp.initCause(new IOException(msg),e); |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | public synchronized String getConnectionId() throws IOException { |
| 347 | if (terminated || !connected) { |
| 348 | if (logger.traceOn()) |
| 349 | logger.trace("getConnectionId","["+this.toString()+ |
| 350 | "] not connected."); |
| 351 | |
| 352 | throw new IOException("Not connected"); |
| 353 | } |
| 354 | |
| 355 | // we do a remote call to have an IOException if the connection is broken. |
| 356 | // see the bug 4939578 |
| 357 | return connection.getConnectionId(); |
| 358 | } |
| 359 | |
| 360 | public synchronized MBeanServerConnection getMBeanServerConnection() |
| 361 | throws IOException { |
| 362 | return getMBeanServerConnection(null); |
| 363 | } |
| 364 | |
| 365 | public synchronized MBeanServerConnection |
| 366 | getMBeanServerConnection(Subject delegationSubject) |
| 367 | throws IOException { |
| 368 | |
| 369 | if (terminated) { |
| 370 | if (logger.traceOn()) |
| 371 | logger.trace("getMBeanServerConnection","[" + this.toString() + |
| 372 | "] already closed."); |
| 373 | throw new IOException("Connection closed"); |
| 374 | } else if (!connected) { |
| 375 | if (logger.traceOn()) |
| 376 | logger.trace("getMBeanServerConnection","[" + this.toString() + |
| 377 | "] is not connected."); |
| 378 | throw new IOException("Not connected"); |
| 379 | } |
| 380 | |
| 381 | MBeanServerConnection mbsc = rmbscMap.get(delegationSubject); |
| 382 | if (mbsc != null) |
| 383 | return mbsc; |
| 384 | |
| 385 | mbsc = new RemoteMBeanServerConnection(delegationSubject); |
| 386 | rmbscMap.put(delegationSubject, mbsc); |
| 387 | return mbsc; |
| 388 | } |
| 389 | |
| 390 | public void |
| 391 | addConnectionNotificationListener(NotificationListener listener, |
| 392 | NotificationFilter filter, |
| 393 | Object handback) { |
| 394 | if (listener == null) |
| 395 | throw new NullPointerException("listener"); |
| 396 | connectionBroadcaster.addNotificationListener(listener, filter, |
| 397 | handback); |
| 398 | } |
| 399 | |
| 400 | public void |
| 401 | removeConnectionNotificationListener(NotificationListener listener) |
| 402 | throws ListenerNotFoundException { |
| 403 | if (listener == null) |
| 404 | throw new NullPointerException("listener"); |
| 405 | connectionBroadcaster.removeNotificationListener(listener); |
| 406 | } |
| 407 | |
| 408 | public void |
| 409 | removeConnectionNotificationListener(NotificationListener listener, |
| 410 | NotificationFilter filter, |
| 411 | Object handback) |
| 412 | throws ListenerNotFoundException { |
| 413 | if (listener == null) |
| 414 | throw new NullPointerException("listener"); |
| 415 | connectionBroadcaster.removeNotificationListener(listener, filter, |
| 416 | handback); |
| 417 | } |
| 418 | |
| 419 | private void sendNotification(Notification n) { |
| 420 | connectionBroadcaster.sendNotification(n); |
| 421 | } |
| 422 | |
| 423 | public synchronized void close() throws IOException { |
| 424 | close(false); |
| 425 | } |
| 426 | |
| 427 | // allows to do close after setting the flag "terminated" to true. |
| 428 | // It is necessary to avoid a deadlock, see 6296324 |
| 429 | private synchronized void close(boolean intern) throws IOException { |
| 430 | final boolean tracing = logger.traceOn(); |
| 431 | final boolean debug = logger.debugOn(); |
| 432 | final String idstr = (tracing?"["+this.toString()+"]":null); |
| 433 | |
| 434 | if (!intern) { |
| 435 | // Return if already cleanly closed. |
| 436 | // |
| 437 | if (terminated) { |
| 438 | if (closeException == null) { |
| 439 | if (tracing) logger.trace("close",idstr + " already closed."); |
| 440 | return; |
| 441 | } |
| 442 | } else { |
| 443 | terminated = true; |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | if (closeException != null && tracing) { |
| 448 | // Already closed, but not cleanly. Attempt again. |
| 449 | // |
| 450 | if (tracing) { |
| 451 | logger.trace("close",idstr + " had failed: " + closeException); |
| 452 | logger.trace("close",idstr + " attempting to close again."); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | String savedConnectionId = null; |
| 457 | if (connected) { |
| 458 | savedConnectionId = connectionId; |
| 459 | } |
| 460 | |
| 461 | closeException = null; |
| 462 | |
| 463 | if (tracing) logger.trace("close",idstr + " closing."); |
| 464 | |
| 465 | if (communicatorAdmin != null) { |
| 466 | communicatorAdmin.terminate(); |
| 467 | } |
| 468 | |
| 469 | if (rmiNotifClient != null) { |
| 470 | try { |
| 471 | rmiNotifClient.terminate(); |
| 472 | if (tracing) logger.trace("close",idstr + |
| 473 | " RMI Notification client terminated."); |
| 474 | } catch (RuntimeException x) { |
| 475 | closeException = x; |
| 476 | if (tracing) logger.trace("close",idstr + |
| 477 | " Failed to terminate RMI Notification client: " + x); |
| 478 | if (debug) logger.debug("close",x); |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | if (connection != null) { |
| 483 | try { |
| 484 | connection.close(); |
| 485 | if (tracing) logger.trace("close",idstr + " closed."); |
| 486 | } catch (NoSuchObjectException nse) { |
| 487 | // OK, the server maybe closed itself. |
| 488 | } catch (IOException e) { |
| 489 | closeException = e; |
| 490 | if (tracing) logger.trace("close",idstr + |
| 491 | " Failed to close RMIServer: " + e); |
| 492 | if (debug) logger.debug("close",e); |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | // Clean up MBeanServerConnection table |
| 497 | // |
| 498 | rmbscMap.clear(); |
| 499 | |
| 500 | /* Send notification of closure. We don't do this if the user |
| 501 | * never called connect() on the connector, because there's no |
| 502 | * connection id in that case. */ |
| 503 | |
| 504 | if (savedConnectionId != null) { |
| 505 | Notification closedNotif = |
| 506 | new JMXConnectionNotification(JMXConnectionNotification.CLOSED, |
| 507 | this, |
| 508 | savedConnectionId, |
| 509 | clientNotifSeqNo++, |
| 510 | "Client has been closed", |
| 511 | null); |
| 512 | sendNotification(closedNotif); |
| 513 | } |
| 514 | |
| 515 | // throw exception if needed |
| 516 | // |
| 517 | if (closeException != null) { |
| 518 | if (tracing) logger.trace("close",idstr + " failed to close: " + |
| 519 | closeException); |
| 520 | if (closeException instanceof IOException) |
| 521 | throw (IOException) closeException; |
| 522 | if (closeException instanceof RuntimeException) |
| 523 | throw (RuntimeException) closeException; |
| 524 | final IOException x = |
| 525 | new IOException("Failed to close: " + closeException); |
| 526 | throw EnvHelp.initCause(x,closeException); |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | // added for re-connection |
| 531 | private Integer addListenerWithSubject(ObjectName name, |
| 532 | MarshalledObject filter, |
| 533 | Subject delegationSubject, |
| 534 | boolean reconnect) |
| 535 | throws InstanceNotFoundException, IOException { |
| 536 | |
| 537 | final boolean debug = logger.debugOn(); |
| 538 | if (debug) |
| 539 | logger.debug("addListenerWithSubject", |
| 540 | "(ObjectName,MarshalledObject,Subject)"); |
| 541 | |
| 542 | final ObjectName[] names = new ObjectName[] {name}; |
| 543 | final MarshalledObject[] filters = new MarshalledObject[] {filter}; |
| 544 | final Subject[] delegationSubjects = new Subject[] { |
| 545 | delegationSubject |
| 546 | }; |
| 547 | |
| 548 | final Integer[] listenerIDs = |
| 549 | addListenersWithSubjects(names,filters,delegationSubjects, |
| 550 | reconnect); |
| 551 | |
| 552 | if (debug) logger.debug("addListenerWithSubject","listenerID=" |
| 553 | + listenerIDs[0]); |
| 554 | return listenerIDs[0]; |
| 555 | } |
| 556 | |
| 557 | // added for re-connection |
| 558 | private Integer[] addListenersWithSubjects(ObjectName[] names, |
| 559 | MarshalledObject[] filters, |
| 560 | Subject[] delegationSubjects, |
| 561 | boolean reconnect) |
| 562 | throws InstanceNotFoundException, IOException { |
| 563 | |
| 564 | final boolean debug = logger.debugOn(); |
| 565 | if (debug) |
| 566 | logger.debug("addListenersWithSubjects", |
| 567 | "(ObjectName[],MarshalledObject[],Subject[])"); |
| 568 | |
| 569 | final ClassLoader old = pushDefaultClassLoader(); |
| 570 | Integer[] listenerIDs = null; |
| 571 | |
| 572 | try { |
| 573 | listenerIDs = connection.addNotificationListeners(names, |
| 574 | filters, |
| 575 | delegationSubjects); |
| 576 | } catch (NoSuchObjectException noe) { |
| 577 | // maybe reconnect |
| 578 | if (reconnect) { |
| 579 | communicatorAdmin.gotIOException(noe); |
| 580 | |
| 581 | listenerIDs = connection.addNotificationListeners(names, |
| 582 | filters, |
| 583 | delegationSubjects); |
| 584 | } else { |
| 585 | throw noe; |
| 586 | } |
| 587 | } catch (IOException ioe) { |
| 588 | // send a failed notif if necessary |
| 589 | communicatorAdmin.gotIOException(ioe); |
| 590 | } finally { |
| 591 | popDefaultClassLoader(old); |
| 592 | } |
| 593 | |
| 594 | if (debug) logger.debug("addListenersWithSubjects","registered " |
| 595 | + listenerIDs.length + " listener(s)"); |
| 596 | return listenerIDs; |
| 597 | } |
| 598 | |
| 599 | //-------------------------------------------------------------------- |
| 600 | // Implementation of MBeanServerConnection |
| 601 | //-------------------------------------------------------------------- |
| 602 | private class RemoteMBeanServerConnection |
| 603 | implements MBeanServerConnection { |
| 604 | |
| 605 | private Subject delegationSubject; |
| 606 | |
| 607 | public RemoteMBeanServerConnection() { |
| 608 | this(null); |
| 609 | } |
| 610 | |
| 611 | public RemoteMBeanServerConnection(Subject delegationSubject) { |
| 612 | this.delegationSubject = delegationSubject; |
| 613 | } |
| 614 | |
| 615 | public ObjectInstance createMBean(String className, |
| 616 | ObjectName name) |
| 617 | throws ReflectionException, |
| 618 | InstanceAlreadyExistsException, |
| 619 | MBeanRegistrationException, |
| 620 | MBeanException, |
| 621 | NotCompliantMBeanException, |
| 622 | IOException { |
| 623 | if (logger.debugOn()) |
| 624 | logger.debug("createMBean(String,ObjectName)", |
| 625 | "className=" + className + ", name=" + |
| 626 | name); |
| 627 | |
| 628 | final ClassLoader old = pushDefaultClassLoader(); |
| 629 | try { |
| 630 | return connection.createMBean(className, |
| 631 | name, |
| 632 | delegationSubject); |
| 633 | } catch (IOException ioe) { |
| 634 | communicatorAdmin.gotIOException(ioe); |
| 635 | |
| 636 | return connection.createMBean(className, |
| 637 | name, |
| 638 | delegationSubject); |
| 639 | } finally { |
| 640 | popDefaultClassLoader(old); |
| 641 | } |
| 642 | } |
| 643 | |
| 644 | public ObjectInstance createMBean(String className, |
| 645 | ObjectName name, |
| 646 | ObjectName loaderName) |
| 647 | throws ReflectionException, |
| 648 | InstanceAlreadyExistsException, |
| 649 | MBeanRegistrationException, |
| 650 | MBeanException, |
| 651 | NotCompliantMBeanException, |
| 652 | InstanceNotFoundException, |
| 653 | IOException { |
| 654 | |
| 655 | if (logger.debugOn()) |
| 656 | logger.debug("createMBean(String,ObjectName,ObjectName)", |
| 657 | "className=" + className + ", name=" |
| 658 | + name + ", loaderName=" |
| 659 | + loaderName + ")"); |
| 660 | |
| 661 | final ClassLoader old = pushDefaultClassLoader(); |
| 662 | try { |
| 663 | return connection.createMBean(className, |
| 664 | name, |
| 665 | loaderName, |
| 666 | delegationSubject); |
| 667 | |
| 668 | } catch (IOException ioe) { |
| 669 | communicatorAdmin.gotIOException(ioe); |
| 670 | |
| 671 | return connection.createMBean(className, |
| 672 | name, |
| 673 | loaderName, |
| 674 | delegationSubject); |
| 675 | |
| 676 | } finally { |
| 677 | popDefaultClassLoader(old); |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | public ObjectInstance createMBean(String className, |
| 682 | ObjectName name, |
| 683 | Object params[], |
| 684 | String signature[]) |
| 685 | throws ReflectionException, |
| 686 | InstanceAlreadyExistsException, |
| 687 | MBeanRegistrationException, |
| 688 | MBeanException, |
| 689 | NotCompliantMBeanException, |
| 690 | IOException { |
| 691 | if (logger.debugOn()) |
| 692 | logger.debug("createMBean(String,ObjectName,Object[],String[])", |
| 693 | "className=" + className + ", name=" |
| 694 | + name + ", params=" |
| 695 | + objects(params) + ", signature=" |
| 696 | + strings(signature)); |
| 697 | |
| 698 | final MarshalledObject<Object[]> sParams = |
| 699 | new MarshalledObject<Object[]>(params); |
| 700 | final ClassLoader old = pushDefaultClassLoader(); |
| 701 | try { |
| 702 | return connection.createMBean(className, |
| 703 | name, |
| 704 | sParams, |
| 705 | signature, |
| 706 | delegationSubject); |
| 707 | } catch (IOException ioe) { |
| 708 | communicatorAdmin.gotIOException(ioe); |
| 709 | |
| 710 | return connection.createMBean(className, |
| 711 | name, |
| 712 | sParams, |
| 713 | signature, |
| 714 | delegationSubject); |
| 715 | } finally { |
| 716 | popDefaultClassLoader(old); |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | public ObjectInstance createMBean(String className, |
| 721 | ObjectName name, |
| 722 | ObjectName loaderName, |
| 723 | Object params[], |
| 724 | String signature[]) |
| 725 | throws ReflectionException, |
| 726 | InstanceAlreadyExistsException, |
| 727 | MBeanRegistrationException, |
| 728 | MBeanException, |
| 729 | NotCompliantMBeanException, |
| 730 | InstanceNotFoundException, |
| 731 | IOException { |
| 732 | if (logger.debugOn()) logger.debug( |
| 733 | "createMBean(String,ObjectName,ObjectName,Object[],String[])", |
| 734 | "className=" + className + ", name=" + name + ", loaderName=" |
| 735 | + loaderName + ", params=" + objects(params) |
| 736 | + ", signature=" + strings(signature)); |
| 737 | |
| 738 | final MarshalledObject<Object[]> sParams = |
| 739 | new MarshalledObject<Object[]>(params); |
| 740 | final ClassLoader old = pushDefaultClassLoader(); |
| 741 | try { |
| 742 | return connection.createMBean(className, |
| 743 | name, |
| 744 | loaderName, |
| 745 | sParams, |
| 746 | signature, |
| 747 | delegationSubject); |
| 748 | } catch (IOException ioe) { |
| 749 | communicatorAdmin.gotIOException(ioe); |
| 750 | |
| 751 | return connection.createMBean(className, |
| 752 | name, |
| 753 | loaderName, |
| 754 | sParams, |
| 755 | signature, |
| 756 | delegationSubject); |
| 757 | } finally { |
| 758 | popDefaultClassLoader(old); |
| 759 | } |
| 760 | } |
| 761 | |
| 762 | public void unregisterMBean(ObjectName name) |
| 763 | throws InstanceNotFoundException, |
| 764 | MBeanRegistrationException, |
| 765 | IOException { |
| 766 | if (logger.debugOn()) |
| 767 | logger.debug("unregisterMBean", "name=" + name); |
| 768 | |
| 769 | final ClassLoader old = pushDefaultClassLoader(); |
| 770 | try { |
| 771 | connection.unregisterMBean(name, delegationSubject); |
| 772 | } catch (IOException ioe) { |
| 773 | communicatorAdmin.gotIOException(ioe); |
| 774 | |
| 775 | connection.unregisterMBean(name, delegationSubject); |
| 776 | } finally { |
| 777 | popDefaultClassLoader(old); |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | public ObjectInstance getObjectInstance(ObjectName name) |
| 782 | throws InstanceNotFoundException, |
| 783 | IOException { |
| 784 | if (logger.debugOn()) |
| 785 | logger.debug("getObjectInstance", "name=" + name); |
| 786 | |
| 787 | final ClassLoader old = pushDefaultClassLoader(); |
| 788 | try { |
| 789 | return connection.getObjectInstance(name, delegationSubject); |
| 790 | } catch (IOException ioe) { |
| 791 | communicatorAdmin.gotIOException(ioe); |
| 792 | |
| 793 | return connection.getObjectInstance(name, delegationSubject); |
| 794 | } finally { |
| 795 | popDefaultClassLoader(old); |
| 796 | } |
| 797 | } |
| 798 | |
| 799 | public Set<ObjectInstance> queryMBeans(ObjectName name, |
| 800 | QueryExp query) |
| 801 | throws IOException { |
| 802 | if (logger.debugOn()) logger.debug("queryMBeans", |
| 803 | "name=" + name + ", query=" + query); |
| 804 | |
| 805 | final MarshalledObject<QueryExp> sQuery = |
| 806 | new MarshalledObject<QueryExp>(query); |
| 807 | final ClassLoader old = pushDefaultClassLoader(); |
| 808 | try { |
| 809 | return connection.queryMBeans(name, sQuery, delegationSubject); |
| 810 | } catch (IOException ioe) { |
| 811 | communicatorAdmin.gotIOException(ioe); |
| 812 | |
| 813 | return connection.queryMBeans(name, sQuery, delegationSubject); |
| 814 | } finally { |
| 815 | popDefaultClassLoader(old); |
| 816 | } |
| 817 | } |
| 818 | |
| 819 | public Set<ObjectName> queryNames(ObjectName name, |
| 820 | QueryExp query) |
| 821 | throws IOException { |
| 822 | if (logger.debugOn()) logger.debug("queryNames", |
| 823 | "name=" + name + ", query=" + query); |
| 824 | |
| 825 | final MarshalledObject<QueryExp> sQuery = |
| 826 | new MarshalledObject<QueryExp>(query); |
| 827 | final ClassLoader old = pushDefaultClassLoader(); |
| 828 | try { |
| 829 | return connection.queryNames(name, sQuery, delegationSubject); |
| 830 | } catch (IOException ioe) { |
| 831 | communicatorAdmin.gotIOException(ioe); |
| 832 | |
| 833 | return connection.queryNames(name, sQuery, delegationSubject); |
| 834 | } finally { |
| 835 | popDefaultClassLoader(old); |
| 836 | } |
| 837 | } |
| 838 | |
| 839 | public boolean isRegistered(ObjectName name) |
| 840 | throws IOException { |
| 841 | if (logger.debugOn()) |
| 842 | logger.debug("isRegistered", "name=" + name); |
| 843 | |
| 844 | final ClassLoader old = pushDefaultClassLoader(); |
| 845 | try { |
| 846 | return connection.isRegistered(name, delegationSubject); |
| 847 | } catch (IOException ioe) { |
| 848 | communicatorAdmin.gotIOException(ioe); |
| 849 | |
| 850 | return connection.isRegistered(name, delegationSubject); |
| 851 | } finally { |
| 852 | popDefaultClassLoader(old); |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | public Integer getMBeanCount() |
| 857 | throws IOException { |
| 858 | if (logger.debugOn()) logger.debug("getMBeanCount", ""); |
| 859 | |
| 860 | final ClassLoader old = pushDefaultClassLoader(); |
| 861 | try { |
| 862 | return connection.getMBeanCount(delegationSubject); |
| 863 | } catch (IOException ioe) { |
| 864 | communicatorAdmin.gotIOException(ioe); |
| 865 | |
| 866 | return connection.getMBeanCount(delegationSubject); |
| 867 | } finally { |
| 868 | popDefaultClassLoader(old); |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | public Object getAttribute(ObjectName name, |
| 873 | String attribute) |
| 874 | throws MBeanException, |
| 875 | AttributeNotFoundException, |
| 876 | InstanceNotFoundException, |
| 877 | ReflectionException, |
| 878 | IOException { |
| 879 | if (logger.debugOn()) logger.debug("getAttribute", |
| 880 | "name=" + name + ", attribute=" |
| 881 | + attribute); |
| 882 | |
| 883 | final ClassLoader old = pushDefaultClassLoader(); |
| 884 | try { |
| 885 | return connection.getAttribute(name, |
| 886 | attribute, |
| 887 | delegationSubject); |
| 888 | } catch (IOException ioe) { |
| 889 | communicatorAdmin.gotIOException(ioe); |
| 890 | |
| 891 | return connection.getAttribute(name, |
| 892 | attribute, |
| 893 | delegationSubject); |
| 894 | } finally { |
| 895 | popDefaultClassLoader(old); |
| 896 | } |
| 897 | } |
| 898 | |
| 899 | public AttributeList getAttributes(ObjectName name, |
| 900 | String[] attributes) |
| 901 | throws InstanceNotFoundException, |
| 902 | ReflectionException, |
| 903 | IOException { |
| 904 | if (logger.debugOn()) logger.debug("getAttributes", |
| 905 | "name=" + name + ", attributes=" |
| 906 | + strings(attributes)); |
| 907 | |
| 908 | final ClassLoader old = pushDefaultClassLoader(); |
| 909 | try { |
| 910 | return connection.getAttributes(name, |
| 911 | attributes, |
| 912 | delegationSubject); |
| 913 | |
| 914 | } catch (IOException ioe) { |
| 915 | communicatorAdmin.gotIOException(ioe); |
| 916 | |
| 917 | return connection.getAttributes(name, |
| 918 | attributes, |
| 919 | delegationSubject); |
| 920 | } finally { |
| 921 | popDefaultClassLoader(old); |
| 922 | } |
| 923 | } |
| 924 | |
| 925 | |
| 926 | public void setAttribute(ObjectName name, |
| 927 | Attribute attribute) |
| 928 | throws InstanceNotFoundException, |
| 929 | AttributeNotFoundException, |
| 930 | InvalidAttributeValueException, |
| 931 | MBeanException, |
| 932 | ReflectionException, |
| 933 | IOException { |
| 934 | |
| 935 | if (logger.debugOn()) logger.debug("setAttribute", |
| 936 | "name=" + name + ", attribute=" |
| 937 | + attribute); |
| 938 | |
| 939 | final MarshalledObject<Attribute> sAttribute = |
| 940 | new MarshalledObject<Attribute>(attribute); |
| 941 | final ClassLoader old = pushDefaultClassLoader(); |
| 942 | try { |
| 943 | connection.setAttribute(name, sAttribute, delegationSubject); |
| 944 | } catch (IOException ioe) { |
| 945 | communicatorAdmin.gotIOException(ioe); |
| 946 | |
| 947 | connection.setAttribute(name, sAttribute, delegationSubject); |
| 948 | } finally { |
| 949 | popDefaultClassLoader(old); |
| 950 | } |
| 951 | } |
| 952 | |
| 953 | public AttributeList setAttributes(ObjectName name, |
| 954 | AttributeList attributes) |
| 955 | throws InstanceNotFoundException, |
| 956 | ReflectionException, |
| 957 | IOException { |
| 958 | |
| 959 | if (logger.debugOn()) logger.debug("setAttributes", |
| 960 | "name=" + name + ", attributes=" |
| 961 | + attributes); |
| 962 | |
| 963 | final MarshalledObject<AttributeList> sAttributes = |
| 964 | new MarshalledObject<AttributeList>(attributes); |
| 965 | final ClassLoader old = pushDefaultClassLoader(); |
| 966 | try { |
| 967 | return connection.setAttributes(name, |
| 968 | sAttributes, |
| 969 | delegationSubject); |
| 970 | } catch (IOException ioe) { |
| 971 | communicatorAdmin.gotIOException(ioe); |
| 972 | |
| 973 | return connection.setAttributes(name, |
| 974 | sAttributes, |
| 975 | delegationSubject); |
| 976 | } finally { |
| 977 | popDefaultClassLoader(old); |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | |
| 982 | public Object invoke(ObjectName name, |
| 983 | String operationName, |
| 984 | Object params[], |
| 985 | String signature[]) |
| 986 | throws InstanceNotFoundException, |
| 987 | MBeanException, |
| 988 | ReflectionException, |
| 989 | IOException { |
| 990 | |
| 991 | if (logger.debugOn()) logger.debug("invoke", |
| 992 | "name=" + name |
| 993 | + ", operationName=" + operationName |
| 994 | + ", params=" + objects(params) |
| 995 | + ", signature=" + strings(signature)); |
| 996 | |
| 997 | final MarshalledObject<Object[]> sParams = |
| 998 | new MarshalledObject<Object[]>(params); |
| 999 | final ClassLoader old = pushDefaultClassLoader(); |
| 1000 | try { |
| 1001 | return connection.invoke(name, |
| 1002 | operationName, |
| 1003 | sParams, |
| 1004 | signature, |
| 1005 | delegationSubject); |
| 1006 | } catch (IOException ioe) { |
| 1007 | communicatorAdmin.gotIOException(ioe); |
| 1008 | |
| 1009 | return connection.invoke(name, |
| 1010 | operationName, |
| 1011 | sParams, |
| 1012 | signature, |
| 1013 | delegationSubject); |
| 1014 | } finally { |
| 1015 | popDefaultClassLoader(old); |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | |
| 1020 | public String getDefaultDomain() |
| 1021 | throws IOException { |
| 1022 | if (logger.debugOn()) logger.debug("getDefaultDomain", ""); |
| 1023 | |
| 1024 | final ClassLoader old = pushDefaultClassLoader(); |
| 1025 | try { |
| 1026 | return connection.getDefaultDomain(delegationSubject); |
| 1027 | } catch (IOException ioe) { |
| 1028 | communicatorAdmin.gotIOException(ioe); |
| 1029 | |
| 1030 | return connection.getDefaultDomain(delegationSubject); |
| 1031 | } finally { |
| 1032 | popDefaultClassLoader(old); |
| 1033 | } |
| 1034 | } |
| 1035 | |
| 1036 | public String[] getDomains() throws IOException { |
| 1037 | if (logger.debugOn()) logger.debug("getDomains", ""); |
| 1038 | |
| 1039 | final ClassLoader old = pushDefaultClassLoader(); |
| 1040 | try { |
| 1041 | return connection.getDomains(delegationSubject); |
| 1042 | } catch (IOException ioe) { |
| 1043 | communicatorAdmin.gotIOException(ioe); |
| 1044 | |
| 1045 | return connection.getDomains(delegationSubject); |
| 1046 | } finally { |
| 1047 | popDefaultClassLoader(old); |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | public MBeanInfo getMBeanInfo(ObjectName name) |
| 1052 | throws InstanceNotFoundException, |
| 1053 | IntrospectionException, |
| 1054 | ReflectionException, |
| 1055 | IOException { |
| 1056 | |
| 1057 | if (logger.debugOn()) logger.debug("getMBeanInfo", "name=" + name); |
| 1058 | final ClassLoader old = pushDefaultClassLoader(); |
| 1059 | try { |
| 1060 | return connection.getMBeanInfo(name, delegationSubject); |
| 1061 | } catch (IOException ioe) { |
| 1062 | communicatorAdmin.gotIOException(ioe); |
| 1063 | |
| 1064 | return connection.getMBeanInfo(name, delegationSubject); |
| 1065 | } finally { |
| 1066 | popDefaultClassLoader(old); |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | |
| 1071 | public boolean isInstanceOf(ObjectName name, |
| 1072 | String className) |
| 1073 | throws InstanceNotFoundException, |
| 1074 | IOException { |
| 1075 | if (logger.debugOn()) |
| 1076 | logger.debug("isInstanceOf", "name=" + name + |
| 1077 | ", className=" + className); |
| 1078 | |
| 1079 | final ClassLoader old = pushDefaultClassLoader(); |
| 1080 | try { |
| 1081 | return connection.isInstanceOf(name, |
| 1082 | className, |
| 1083 | delegationSubject); |
| 1084 | } catch (IOException ioe) { |
| 1085 | communicatorAdmin.gotIOException(ioe); |
| 1086 | |
| 1087 | return connection.isInstanceOf(name, |
| 1088 | className, |
| 1089 | delegationSubject); |
| 1090 | } finally { |
| 1091 | popDefaultClassLoader(old); |
| 1092 | } |
| 1093 | } |
| 1094 | |
| 1095 | public void addNotificationListener(ObjectName name, |
| 1096 | ObjectName listener, |
| 1097 | NotificationFilter filter, |
| 1098 | Object handback) |
| 1099 | throws InstanceNotFoundException, |
| 1100 | IOException { |
| 1101 | |
| 1102 | if (logger.debugOn()) |
| 1103 | logger.debug("addNotificationListener" + |
| 1104 | "(ObjectName,ObjectName,NotificationFilter,Object)", |
| 1105 | "name=" + name + ", listener=" + listener |
| 1106 | + ", filter=" + filter + ", handback=" + handback); |
| 1107 | |
| 1108 | final MarshalledObject<NotificationFilter> sFilter = |
| 1109 | new MarshalledObject<NotificationFilter>(filter); |
| 1110 | final MarshalledObject<Object> sHandback = |
| 1111 | new MarshalledObject<Object>(handback); |
| 1112 | final ClassLoader old = pushDefaultClassLoader(); |
| 1113 | try { |
| 1114 | connection.addNotificationListener(name, |
| 1115 | listener, |
| 1116 | sFilter, |
| 1117 | sHandback, |
| 1118 | delegationSubject); |
| 1119 | } catch (IOException ioe) { |
| 1120 | communicatorAdmin.gotIOException(ioe); |
| 1121 | |
| 1122 | connection.addNotificationListener(name, |
| 1123 | listener, |
| 1124 | sFilter, |
| 1125 | sHandback, |
| 1126 | delegationSubject); |
| 1127 | } finally { |
| 1128 | popDefaultClassLoader(old); |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | public void removeNotificationListener(ObjectName name, |
| 1133 | ObjectName listener) |
| 1134 | throws InstanceNotFoundException, |
| 1135 | ListenerNotFoundException, |
| 1136 | IOException { |
| 1137 | |
| 1138 | if (logger.debugOn()) logger.debug("removeNotificationListener" + |
| 1139 | "(ObjectName,ObjectName)", |
| 1140 | "name=" + name |
| 1141 | + ", listener=" + listener); |
| 1142 | |
| 1143 | final ClassLoader old = pushDefaultClassLoader(); |
| 1144 | try { |
| 1145 | connection.removeNotificationListener(name, |
| 1146 | listener, |
| 1147 | delegationSubject); |
| 1148 | } catch (IOException ioe) { |
| 1149 | communicatorAdmin.gotIOException(ioe); |
| 1150 | |
| 1151 | connection.removeNotificationListener(name, |
| 1152 | listener, |
| 1153 | delegationSubject); |
| 1154 | } finally { |
| 1155 | popDefaultClassLoader(old); |
| 1156 | } |
| 1157 | } |
| 1158 | |
| 1159 | public void removeNotificationListener(ObjectName name, |
| 1160 | ObjectName listener, |
| 1161 | NotificationFilter filter, |
| 1162 | Object handback) |
| 1163 | throws InstanceNotFoundException, |
| 1164 | ListenerNotFoundException, |
| 1165 | IOException { |
| 1166 | if (logger.debugOn()) |
| 1167 | logger.debug("removeNotificationListener" + |
| 1168 | "(ObjectName,ObjectName,NotificationFilter,Object)", |
| 1169 | "name=" + name |
| 1170 | + ", listener=" + listener |
| 1171 | + ", filter=" + filter |
| 1172 | + ", handback=" + handback); |
| 1173 | |
| 1174 | final MarshalledObject<NotificationFilter> sFilter = |
| 1175 | new MarshalledObject<NotificationFilter>(filter); |
| 1176 | final MarshalledObject<Object> sHandback = |
| 1177 | new MarshalledObject<Object>(handback); |
| 1178 | final ClassLoader old = pushDefaultClassLoader(); |
| 1179 | try { |
| 1180 | connection.removeNotificationListener(name, |
| 1181 | listener, |
| 1182 | sFilter, |
| 1183 | sHandback, |
| 1184 | delegationSubject); |
| 1185 | } catch (IOException ioe) { |
| 1186 | communicatorAdmin.gotIOException(ioe); |
| 1187 | |
| 1188 | connection.removeNotificationListener(name, |
| 1189 | listener, |
| 1190 | sFilter, |
| 1191 | sHandback, |
| 1192 | delegationSubject); |
| 1193 | } finally { |
| 1194 | popDefaultClassLoader(old); |
| 1195 | } |
| 1196 | } |
| 1197 | |
| 1198 | // Specific Notification Handle ---------------------------------- |
| 1199 | |
| 1200 | public void addNotificationListener(ObjectName name, |
| 1201 | NotificationListener listener, |
| 1202 | NotificationFilter filter, |
| 1203 | Object handback) |
| 1204 | throws InstanceNotFoundException, |
| 1205 | IOException { |
| 1206 | |
| 1207 | final boolean debug = logger.debugOn(); |
| 1208 | if (debug) |
| 1209 | logger.debug("addNotificationListener" + |
| 1210 | "(ObjectName,NotificationListener,"+ |
| 1211 | "NotificationFilter,Object)", |
| 1212 | "name=" + name |
| 1213 | + ", listener=" + listener |
| 1214 | + ", filter=" + filter |
| 1215 | + ", handback=" + handback); |
| 1216 | |
| 1217 | final Integer listenerID = |
| 1218 | addListenerWithSubject(name, |
| 1219 | new MarshalledObject<NotificationFilter>(filter), |
| 1220 | delegationSubject,true); |
| 1221 | rmiNotifClient.addNotificationListener(listenerID, name, listener, |
| 1222 | filter, handback, |
| 1223 | delegationSubject); |
| 1224 | } |
| 1225 | |
| 1226 | public void removeNotificationListener(ObjectName name, |
| 1227 | NotificationListener listener) |
| 1228 | throws InstanceNotFoundException, |
| 1229 | ListenerNotFoundException, |
| 1230 | IOException { |
| 1231 | final boolean debug = logger.debugOn(); |
| 1232 | |
| 1233 | if (debug) logger.debug("removeNotificationListener"+ |
| 1234 | "(ObjectName,NotificationListener)", |
| 1235 | "name=" + name |
| 1236 | + ", listener=" + listener); |
| 1237 | |
| 1238 | final Integer[] ret = |
| 1239 | rmiNotifClient.removeNotificationListener(name, listener); |
| 1240 | |
| 1241 | if (debug) logger.debug("removeNotificationListener", |
| 1242 | "listenerIDs=" + objects(ret)); |
| 1243 | |
| 1244 | final ClassLoader old = pushDefaultClassLoader(); |
| 1245 | |
| 1246 | try { |
| 1247 | connection.removeNotificationListeners(name, |
| 1248 | ret, |
| 1249 | delegationSubject); |
| 1250 | } catch (IOException ioe) { |
| 1251 | communicatorAdmin.gotIOException(ioe); |
| 1252 | |
| 1253 | connection.removeNotificationListeners(name, |
| 1254 | ret, |
| 1255 | delegationSubject); |
| 1256 | } finally { |
| 1257 | popDefaultClassLoader(old); |
| 1258 | } |
| 1259 | |
| 1260 | } |
| 1261 | |
| 1262 | public void removeNotificationListener(ObjectName name, |
| 1263 | NotificationListener listener, |
| 1264 | NotificationFilter filter, |
| 1265 | Object handback) |
| 1266 | throws InstanceNotFoundException, |
| 1267 | ListenerNotFoundException, |
| 1268 | IOException { |
| 1269 | final boolean debug = logger.debugOn(); |
| 1270 | |
| 1271 | if (debug) |
| 1272 | logger.debug("removeNotificationListener"+ |
| 1273 | "(ObjectName,NotificationListener,"+ |
| 1274 | "NotificationFilter,Object)", |
| 1275 | "name=" + name |
| 1276 | + ", listener=" + listener |
| 1277 | + ", filter=" + filter |
| 1278 | + ", handback=" + handback); |
| 1279 | |
| 1280 | final Integer ret = |
| 1281 | rmiNotifClient.removeNotificationListener(name, listener, |
| 1282 | filter, handback); |
| 1283 | |
| 1284 | if (debug) logger.debug("removeNotificationListener", |
| 1285 | "listenerID=" + ret); |
| 1286 | |
| 1287 | final ClassLoader old = pushDefaultClassLoader(); |
| 1288 | try { |
| 1289 | connection.removeNotificationListeners(name, |
| 1290 | new Integer[] {ret}, |
| 1291 | delegationSubject); |
| 1292 | } catch (IOException ioe) { |
| 1293 | communicatorAdmin.gotIOException(ioe); |
| 1294 | |
| 1295 | connection.removeNotificationListeners(name, |
| 1296 | new Integer[] {ret}, |
| 1297 | delegationSubject); |
| 1298 | } finally { |
| 1299 | popDefaultClassLoader(old); |
| 1300 | } |
| 1301 | |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | //-------------------------------------------------------------------- |
| 1306 | private class RMINotifClient extends ClientNotifForwarder { |
| 1307 | public RMINotifClient(ClassLoader cl, Map env) { |
| 1308 | super(cl, env); |
| 1309 | } |
| 1310 | |
| 1311 | protected NotificationResult fetchNotifs(long clientSequenceNumber, |
| 1312 | int maxNotifications, |
| 1313 | long timeout) |
| 1314 | throws IOException, ClassNotFoundException { |
| 1315 | IOException org; |
| 1316 | |
| 1317 | while (true) { // used for a successful re-connection |
| 1318 | try { |
| 1319 | return connection.fetchNotifications(clientSequenceNumber, |
| 1320 | maxNotifications, |
| 1321 | timeout); |
| 1322 | } catch (IOException ioe) { |
| 1323 | org = ioe; |
| 1324 | |
| 1325 | // inform of IOException |
| 1326 | try { |
| 1327 | communicatorAdmin.gotIOException(ioe); |
| 1328 | |
| 1329 | // The connection should be re-established. |
| 1330 | continue; |
| 1331 | } catch (IOException ee) { |
| 1332 | // No more fetch, the Exception will be re-thrown. |
| 1333 | break; |
| 1334 | } // never reached |
| 1335 | } // never reached |
| 1336 | } |
| 1337 | |
| 1338 | // specially treating for an UnmarshalException |
| 1339 | if (org instanceof UnmarshalException) { |
| 1340 | UnmarshalException ume = (UnmarshalException)org; |
| 1341 | |
| 1342 | if (ume.detail instanceof ClassNotFoundException) |
| 1343 | throw (ClassNotFoundException) ume.detail; |
| 1344 | |
| 1345 | /* In Sun's RMI implementation, if a method return |
| 1346 | contains an unserializable object, then we get |
| 1347 | UnmarshalException wrapping WriteAbortedException |
| 1348 | wrapping NotSerializableException. In that case we |
| 1349 | extract the NotSerializableException so that our |
| 1350 | caller can realize it should try to skip past the |
| 1351 | notification that presumably caused it. It's not |
| 1352 | certain that every other RMI implementation will |
| 1353 | generate this exact exception sequence. If not, we |
| 1354 | will not detect that the problem is due to an |
| 1355 | unserializable object, and we will stop trying to |
| 1356 | receive notifications from the server. It's not |
| 1357 | clear we can do much better. */ |
| 1358 | if (ume.detail instanceof WriteAbortedException) { |
| 1359 | WriteAbortedException wae = |
| 1360 | (WriteAbortedException) ume.detail; |
| 1361 | if (wae.detail instanceof IOException) |
| 1362 | throw (IOException) wae.detail; |
| 1363 | } |
| 1364 | } else if (org instanceof MarshalException) { |
| 1365 | // IIOP will throw MarshalException wrapping a NotSerializableException |
| 1366 | // when a server fails to serialize a response. |
| 1367 | MarshalException me = (MarshalException)org; |
| 1368 | if (me.detail instanceof NotSerializableException) { |
| 1369 | throw (NotSerializableException)me.detail; |
| 1370 | } |
| 1371 | } |
| 1372 | |
| 1373 | // Not serialization problem, simply re-throw the orginal exception |
| 1374 | throw org; |
| 1375 | } |
| 1376 | |
| 1377 | protected Integer addListenerForMBeanRemovedNotif() |
| 1378 | throws IOException, InstanceNotFoundException { |
| 1379 | MarshalledObject<NotificationFilter> sFilter = null; |
| 1380 | NotificationFilterSupport clientFilter = |
| 1381 | new NotificationFilterSupport(); |
| 1382 | clientFilter.enableType( |
| 1383 | MBeanServerNotification.UNREGISTRATION_NOTIFICATION); |
| 1384 | sFilter = new MarshalledObject<NotificationFilter>(clientFilter); |
| 1385 | |
| 1386 | Integer[] listenerIDs; |
| 1387 | final ObjectName[] names = |
| 1388 | new ObjectName[] {MBeanServerDelegate.DELEGATE_NAME}; |
| 1389 | final MarshalledObject[] filters = |
| 1390 | new MarshalledObject[] {sFilter}; |
| 1391 | final Subject[] subjects = new Subject[] {null}; |
| 1392 | try { |
| 1393 | listenerIDs = |
| 1394 | connection.addNotificationListeners(names, |
| 1395 | filters, |
| 1396 | subjects); |
| 1397 | |
| 1398 | } catch (IOException ioe) { |
| 1399 | communicatorAdmin.gotIOException(ioe); |
| 1400 | |
| 1401 | listenerIDs = |
| 1402 | connection.addNotificationListeners(names, |
| 1403 | filters, |
| 1404 | subjects); |
| 1405 | } |
| 1406 | return listenerIDs[0]; |
| 1407 | } |
| 1408 | |
| 1409 | protected void removeListenerForMBeanRemovedNotif(Integer id) |
| 1410 | throws IOException, InstanceNotFoundException, |
| 1411 | ListenerNotFoundException { |
| 1412 | try { |
| 1413 | connection.removeNotificationListeners( |
| 1414 | MBeanServerDelegate.DELEGATE_NAME, |
| 1415 | new Integer[] {id}, |
| 1416 | null); |
| 1417 | } catch (IOException ioe) { |
| 1418 | communicatorAdmin.gotIOException(ioe); |
| 1419 | |
| 1420 | connection.removeNotificationListeners( |
| 1421 | MBeanServerDelegate.DELEGATE_NAME, |
| 1422 | new Integer[] {id}, |
| 1423 | null); |
| 1424 | } |
| 1425 | |
| 1426 | } |
| 1427 | |
| 1428 | protected void lostNotifs(String message, long number) { |
| 1429 | final String notifType = JMXConnectionNotification.NOTIFS_LOST; |
| 1430 | |
| 1431 | final JMXConnectionNotification n = |
| 1432 | new JMXConnectionNotification(notifType, |
| 1433 | RMIConnector.this, |
| 1434 | connectionId, |
| 1435 | clientNotifCounter++, |
| 1436 | message, |
| 1437 | new Long(number)); |
| 1438 | sendNotification(n); |
| 1439 | } |
| 1440 | } |
| 1441 | |
| 1442 | private class RMIClientCommunicatorAdmin extends ClientCommunicatorAdmin { |
| 1443 | public RMIClientCommunicatorAdmin(long period) { |
| 1444 | super(period); |
| 1445 | } |
| 1446 | |
| 1447 | public void gotIOException (IOException ioe) throws IOException { |
| 1448 | if (ioe instanceof NoSuchObjectException) { |
| 1449 | // need to restart |
| 1450 | super.gotIOException(ioe); |
| 1451 | |
| 1452 | return; |
| 1453 | } |
| 1454 | |
| 1455 | // check if the connection is broken |
| 1456 | try { |
| 1457 | connection.getDefaultDomain(null); |
| 1458 | } catch (IOException ioexc) { |
| 1459 | boolean toClose = false; |
| 1460 | |
| 1461 | synchronized(this) { |
| 1462 | if (!terminated) { |
| 1463 | terminated = true; |
| 1464 | |
| 1465 | toClose = true; |
| 1466 | } |
| 1467 | } |
| 1468 | |
| 1469 | if (toClose) { |
| 1470 | // we should close the connection, |
| 1471 | // but send a failed notif at first |
| 1472 | final Notification failedNotif = |
| 1473 | new JMXConnectionNotification( |
| 1474 | JMXConnectionNotification.FAILED, |
| 1475 | this, |
| 1476 | connectionId, |
| 1477 | clientNotifSeqNo++, |
| 1478 | "Failed to communicate with the server: "+ioe.toString(), |
| 1479 | ioe); |
| 1480 | |
| 1481 | sendNotification(failedNotif); |
| 1482 | |
| 1483 | try { |
| 1484 | close(true); |
| 1485 | } catch (Exception e) { |
| 1486 | // OK. |
| 1487 | // We are closing |
| 1488 | } |
| 1489 | } |
| 1490 | } |
| 1491 | |
| 1492 | // forward the exception |
| 1493 | if (ioe instanceof ServerException) { |
| 1494 | /* Need to unwrap the exception. |
| 1495 | Some user-thrown exception at server side will be wrapped by |
| 1496 | rmi into a ServerException. |
| 1497 | For example, a RMIConnnectorServer will wrap a |
| 1498 | ClassNotFoundException into a UnmarshalException, and rmi |
| 1499 | will throw a ServerException at client side which wraps this |
| 1500 | UnmarshalException. |
| 1501 | No failed notif here. |
| 1502 | */ |
| 1503 | Throwable tt = ((ServerException)ioe).detail; |
| 1504 | |
| 1505 | if (tt instanceof IOException) { |
| 1506 | throw (IOException)tt; |
| 1507 | } else if (tt instanceof RuntimeException) { |
| 1508 | throw (RuntimeException)tt; |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | throw ioe; |
| 1513 | } |
| 1514 | |
| 1515 | public void reconnectNotificationListeners(ClientListenerInfo[] old) throws IOException { |
| 1516 | final int len = old.length; |
| 1517 | int i; |
| 1518 | |
| 1519 | ClientListenerInfo[] clis = new ClientListenerInfo[len]; |
| 1520 | |
| 1521 | final Subject[] subjects = new Subject[len]; |
| 1522 | final ObjectName[] names = new ObjectName[len]; |
| 1523 | final NotificationListener[] listeners = new NotificationListener[len]; |
| 1524 | final NotificationFilter[] filters = new NotificationFilter[len]; |
| 1525 | final MarshalledObject[] mFilters = new MarshalledObject[len]; |
| 1526 | final Object[] handbacks = new Object[len]; |
| 1527 | |
| 1528 | for (i=0;i<len;i++) { |
| 1529 | subjects[i] = old[i].getDelegationSubject(); |
| 1530 | names[i] = old[i].getObjectName(); |
| 1531 | listeners[i] = old[i].getListener(); |
| 1532 | filters[i] = old[i].getNotificationFilter(); |
| 1533 | mFilters[i] = new MarshalledObject<NotificationFilter>(filters[i]); |
| 1534 | handbacks[i] = old[i].getHandback(); |
| 1535 | } |
| 1536 | |
| 1537 | try { |
| 1538 | Integer[] ids = addListenersWithSubjects(names,mFilters,subjects,false); |
| 1539 | |
| 1540 | for (i=0;i<len;i++) { |
| 1541 | clis[i] = new ClientListenerInfo(ids[i], |
| 1542 | names[i], |
| 1543 | listeners[i], |
| 1544 | filters[i], |
| 1545 | handbacks[i], |
| 1546 | subjects[i]); |
| 1547 | } |
| 1548 | |
| 1549 | rmiNotifClient.postReconnection(clis); |
| 1550 | |
| 1551 | return; |
| 1552 | } catch (InstanceNotFoundException infe) { |
| 1553 | // OK, we will do one by one |
| 1554 | } |
| 1555 | |
| 1556 | int j = 0; |
| 1557 | for (i=0;i<len;i++) { |
| 1558 | try { |
| 1559 | Integer id = addListenerWithSubject(names[i], |
| 1560 | new MarshalledObject<NotificationFilter>(filters[i]), |
| 1561 | subjects[i], |
| 1562 | false); |
| 1563 | |
| 1564 | clis[j++] = new ClientListenerInfo(id, |
| 1565 | names[i], |
| 1566 | listeners[i], |
| 1567 | filters[i], |
| 1568 | handbacks[i], |
| 1569 | subjects[i]); |
| 1570 | } catch (InstanceNotFoundException infe) { |
| 1571 | logger.warning("reconnectNotificationListeners", |
| 1572 | "Can't reconnect listener for " + |
| 1573 | names[i]); |
| 1574 | } |
| 1575 | } |
| 1576 | |
| 1577 | if (j != len) { |
| 1578 | ClientListenerInfo[] tmp = clis; |
| 1579 | clis = new ClientListenerInfo[j]; |
| 1580 | System.arraycopy(tmp, 0, clis, 0, j); |
| 1581 | } |
| 1582 | |
| 1583 | rmiNotifClient.postReconnection(clis); |
| 1584 | } |
| 1585 | |
| 1586 | protected void checkConnection() throws IOException { |
| 1587 | if (logger.debugOn()) |
| 1588 | logger.debug("RMIClientCommunicatorAdmin-checkConnection", |
| 1589 | "Calling the method getDefaultDomain."); |
| 1590 | |
| 1591 | connection.getDefaultDomain(null); |
| 1592 | } |
| 1593 | |
| 1594 | protected void doStart() throws IOException { |
| 1595 | // Get RMIServer stub from directory or URL encoding if needed. |
| 1596 | RMIServer stub = null; |
| 1597 | try { |
| 1598 | stub = (rmiServer!=null)?rmiServer: |
| 1599 | findRMIServer(jmxServiceURL, env); |
| 1600 | } catch (NamingException ne) { |
| 1601 | throw new IOException("Failed to get a RMI stub: "+ne); |
| 1602 | } |
| 1603 | |
| 1604 | // Connect IIOP Stub if needed. |
| 1605 | stub = connectStub(stub,env); |
| 1606 | |
| 1607 | // Calling newClient on the RMIServer stub. |
| 1608 | Object credentials = env.get(CREDENTIALS); |
| 1609 | connection = stub.newClient(credentials); |
| 1610 | |
| 1611 | // notif issues |
| 1612 | final ClientListenerInfo[] old = rmiNotifClient.preReconnection(); |
| 1613 | |
| 1614 | reconnectNotificationListeners(old); |
| 1615 | |
| 1616 | connectionId = getConnectionId(); |
| 1617 | |
| 1618 | Notification reconnectedNotif = |
| 1619 | new JMXConnectionNotification(JMXConnectionNotification.OPENED, |
| 1620 | this, |
| 1621 | connectionId, |
| 1622 | clientNotifSeqNo++, |
| 1623 | "Reconnected to server", |
| 1624 | null); |
| 1625 | sendNotification(reconnectedNotif); |
| 1626 | |
| 1627 | } |
| 1628 | |
| 1629 | protected void doStop() { |
| 1630 | try { |
| 1631 | close(); |
| 1632 | } catch (IOException ioe) { |
| 1633 | logger.warning("RMIClientCommunicatorAdmin-doStop", |
| 1634 | "Failed to call the method close():" + ioe); |
| 1635 | logger.debug("RMIClientCommunicatorAdmin-doStop",ioe); |
| 1636 | } |
| 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | //-------------------------------------------------------------------- |
| 1641 | // Private stuff - Serialization |
| 1642 | //-------------------------------------------------------------------- |
| 1643 | /** |
| 1644 | * <p>In order to be usable, an IIOP stub must be connected to an ORB. |
| 1645 | * The stub is automatically connected to the ORB if: |
| 1646 | * <ul> |
| 1647 | * <li> It was returned by the COS naming</li> |
| 1648 | * <li> Its server counterpart has been registered in COS naming |
| 1649 | * through JNDI.</li> |
| 1650 | * </ul> |
| 1651 | * Otherwise, it is not connected. A stub which is deserialized |
| 1652 | * from Jini is not connected. A stub which is obtained from a |
| 1653 | * non registered RMIIIOPServerImpl is not a connected.<br> |
| 1654 | * A stub which is not connected can't be serialized, and thus |
| 1655 | * can't be registered in Jini. A stub which is not connected can't |
| 1656 | * be used to invoke methods on the server. |
| 1657 | * <p> |
| 1658 | * In order to palliate this, this method will connect the |
| 1659 | * given stub if it is not yet connected. If the given |
| 1660 | * <var>RMIServer</var> is not an instance of |
| 1661 | * {@link javax.rmi.CORBA.Stub javax.rmi.CORBA.Stub}, then the |
| 1662 | * method do nothing and simply returns that stub. Otherwise, |
| 1663 | * this method will attempt to connect the stub to an ORB as |
| 1664 | * follows: |
| 1665 | * <ul> |
| 1666 | * <p>This method looks in the provided <var>environment</var> for |
| 1667 | * the "java.naming.corba.orb" property. If it is found, the |
| 1668 | * referenced object (an {@link org.omg.CORBA.ORB ORB}) is used to |
| 1669 | * connect the stub. Otherwise, a new org.omg.CORBA.ORB is created |
| 1670 | * by calling {@link |
| 1671 | * org.omg.CORBA.ORB#init(String[], Properties) |
| 1672 | * org.omg.CORBA.ORB.init((String[])null,(Properties)null)} |
| 1673 | * <p>The new created ORB is kept in a static |
| 1674 | * {@link WeakReference} and can be reused for connecting other |
| 1675 | * stubs. However, no reference is ever kept on the ORB provided |
| 1676 | * in the <var>environment</var> map, if any. |
| 1677 | * </ul> |
| 1678 | * @param rmiServer A RMI Server Stub. |
| 1679 | * @param environment An environment map, possibly containing an ORB. |
| 1680 | * @return the given stub. |
| 1681 | * @exception IllegalArgumentException if the |
| 1682 | * <tt>java.naming.corba.orb</tt> property is specified and |
| 1683 | * does not point to an {@link org.omg.CORBA.ORB ORB}. |
| 1684 | * @exception IOException if the connection to the ORB failed. |
| 1685 | **/ |
| 1686 | static RMIServer connectStub(RMIServer rmiServer, |
| 1687 | Map environment) |
| 1688 | throws IOException { |
| 1689 | if (rmiServer instanceof javax.rmi.CORBA.Stub) { |
| 1690 | javax.rmi.CORBA.Stub stub = (javax.rmi.CORBA.Stub) rmiServer; |
| 1691 | try { |
| 1692 | stub._orb(); |
| 1693 | } catch (BAD_OPERATION x) { |
| 1694 | stub.connect(resolveOrb(environment)); |
| 1695 | } |
| 1696 | } |
| 1697 | return rmiServer; |
| 1698 | } |
| 1699 | |
| 1700 | /** |
| 1701 | * Get the ORB specified by <var>environment</var>, or create a |
| 1702 | * new one. |
| 1703 | * <p>This method looks in the provided <var>environment</var> for |
| 1704 | * the "java.naming.corba.orb" property. If it is found, the |
| 1705 | * referenced object (an {@link org.omg.CORBA.ORB ORB}) is |
| 1706 | * returned. Otherwise, a new org.omg.CORBA.ORB is created |
| 1707 | * by calling {@link |
| 1708 | * org.omg.CORBA.ORB#init(String[], java.util.Properties) |
| 1709 | * org.omg.CORBA.ORB.init((String[])null,(Properties)null)} |
| 1710 | * <p>The new created ORB is kept in a static |
| 1711 | * {@link WeakReference} and can be reused for connecting other |
| 1712 | * stubs. However, no reference is ever kept on the ORB provided |
| 1713 | * in the <var>environment</var> map, if any. |
| 1714 | * @param environment An environment map, possibly containing an ORB. |
| 1715 | * @return An ORB. |
| 1716 | * @exception IllegalArgumentException if the |
| 1717 | * <tt>java.naming.corba.orb</tt> property is specified and |
| 1718 | * does not point to an {@link org.omg.CORBA.ORB ORB}. |
| 1719 | * @exception IOException if the ORB initialization failed. |
| 1720 | **/ |
| 1721 | static ORB resolveOrb(Map environment) |
| 1722 | throws IOException { |
| 1723 | if (environment != null) { |
| 1724 | final Object orb = environment.get(EnvHelp.DEFAULT_ORB); |
| 1725 | if (orb != null && !(orb instanceof ORB)) |
| 1726 | throw new IllegalArgumentException(EnvHelp.DEFAULT_ORB + |
| 1727 | " must be an instance of org.omg.CORBA.ORB."); |
| 1728 | if (orb != null) return (ORB)orb; |
| 1729 | } |
| 1730 | final ORB orb = |
| 1731 | (RMIConnector.orb==null)?null:RMIConnector.orb.get(); |
| 1732 | if (orb != null) return orb; |
| 1733 | |
| 1734 | final ORB newOrb = |
| 1735 | ORB.init((String[])null, (Properties)null); |
| 1736 | RMIConnector.orb = new WeakReference<ORB>(newOrb); |
| 1737 | return newOrb; |
| 1738 | } |
| 1739 | |
| 1740 | /** |
| 1741 | * Read RMIConnector fields from an {@link java.io.ObjectInputStream |
| 1742 | * ObjectInputStream}. |
| 1743 | * Calls <code>s.defaultReadObject()</code> and then initializes |
| 1744 | * all transient variables that need initializing. |
| 1745 | * @param s The ObjectInputStream to read from. |
| 1746 | * @exception InvalidObjectException if none of <var>rmiServer</var> stub |
| 1747 | * or <var>jmxServiceURL</var> are set. |
| 1748 | * @see #RMIConnector(JMXServiceURL,Map) |
| 1749 | * @see #RMIConnector(RMIServer,Map) |
| 1750 | **/ |
| 1751 | private void readObject(java.io.ObjectInputStream s) |
| 1752 | throws IOException, ClassNotFoundException { |
| 1753 | s.defaultReadObject(); |
| 1754 | |
| 1755 | if (rmiServer == null && jmxServiceURL == null) throw new |
| 1756 | InvalidObjectException("rmiServer and jmxServiceURL both null"); |
| 1757 | |
| 1758 | initTransients(); |
| 1759 | } |
| 1760 | |
| 1761 | /** |
| 1762 | * Writes the RMIConnector fields to an {@link java.io.ObjectOutputStream |
| 1763 | * ObjectOutputStream}. |
| 1764 | * <p>Connects the underlying RMIServer stub to an ORB, if needed, |
| 1765 | * before serializing it. This is done using the environment |
| 1766 | * map that was provided to the constructor, if any, and as documented |
| 1767 | * in {@link javax.management.remote.rmi}.</p> |
| 1768 | * <p>This method then calls <code>s.defaultWriteObject()</code>. |
| 1769 | * Usually, <var>rmiServer</var> is null if this object |
| 1770 | * was constructed with a JMXServiceURL, and <var>jmxServiceURL</var> |
| 1771 | * is null if this object is constructed with a RMIServer stub. |
| 1772 | * <p>Note that the environment Map is not serialized, since the objects |
| 1773 | * it contains are assumed to be contextual and relevant only |
| 1774 | * with respect to the local environment (class loader, ORB, etc...).</p> |
| 1775 | * <p>After an RMIConnector is deserialized, it is assumed that the |
| 1776 | * user will call {@link #connect(Map)}, providing a new Map that |
| 1777 | * can contain values which are contextually relevant to the new |
| 1778 | * local environment.</p> |
| 1779 | * <p>Since connection to the ORB is needed prior to serializing, and |
| 1780 | * since the ORB to connect to is one of those contextual parameters, |
| 1781 | * it is not recommended to re-serialize a just de-serialized object - |
| 1782 | * as the de-serialized object has no map. Thus, when an RMIConnector |
| 1783 | * object is needed for serialization or transmission to a remote |
| 1784 | * application, it is recommended to obtain a new RMIConnector stub |
| 1785 | * by calling {@link RMIConnectorServer#toJMXConnector(Map)}.</p> |
| 1786 | * @param s The ObjectOutputStream to write to. |
| 1787 | * @exception InvalidObjectException if none of <var>rmiServer</var> stub |
| 1788 | * or <var>jmxServiceURL</var> are set. |
| 1789 | * @see #RMIConnector(JMXServiceURL,Map) |
| 1790 | * @see #RMIConnector(RMIServer,Map) |
| 1791 | **/ |
| 1792 | private void writeObject(java.io.ObjectOutputStream s) |
| 1793 | throws IOException { |
| 1794 | if (rmiServer == null && jmxServiceURL == null) throw new |
| 1795 | InvalidObjectException("rmiServer and jmxServiceURL both null."); |
| 1796 | connectStub(this.rmiServer,env); |
| 1797 | s.defaultWriteObject(); |
| 1798 | } |
| 1799 | |
| 1800 | // Initialization of transient variables. |
| 1801 | private void initTransients() { |
| 1802 | rmbscMap = new WeakHashMap<Subject, MBeanServerConnection>(); |
| 1803 | connected = false; |
| 1804 | terminated = false; |
| 1805 | |
| 1806 | connectionBroadcaster = new NotificationBroadcasterSupport(); |
| 1807 | } |
| 1808 | |
| 1809 | //-------------------------------------------------------------------- |
| 1810 | // Private stuff - Check if stub can be trusted. |
| 1811 | //-------------------------------------------------------------------- |
| 1812 | |
| 1813 | private static void checkStub(Remote stub, |
| 1814 | Class<?> stubClass) { |
| 1815 | |
| 1816 | // Check remote stub is from the expected class. |
| 1817 | // |
| 1818 | if (stub.getClass() != stubClass) { |
| 1819 | if (!Proxy.isProxyClass(stub.getClass())) { |
| 1820 | throw new SecurityException( |
| 1821 | "Expecting a " + stubClass.getName() + " stub!"); |
| 1822 | } else { |
| 1823 | InvocationHandler handler = Proxy.getInvocationHandler(stub); |
| 1824 | if (handler.getClass() != RemoteObjectInvocationHandler.class) |
| 1825 | throw new SecurityException( |
| 1826 | "Expecting a dynamic proxy instance with a " + |
| 1827 | RemoteObjectInvocationHandler.class.getName() + |
| 1828 | " invocation handler!"); |
| 1829 | else |
| 1830 | stub = (Remote) handler; |
| 1831 | } |
| 1832 | } |
| 1833 | |
| 1834 | // Check RemoteRef in stub is from the expected class |
| 1835 | // "sun.rmi.server.UnicastRef2". |
| 1836 | // |
| 1837 | RemoteRef ref = ((RemoteObject)stub).getRef(); |
| 1838 | if (ref.getClass() != UnicastRef2.class) |
| 1839 | throw new SecurityException( |
| 1840 | "Expecting a " + UnicastRef2.class.getName() + |
| 1841 | " remote reference in stub!"); |
| 1842 | |
| 1843 | // Check RMIClientSocketFactory in stub is from the expected class |
| 1844 | // "javax.rmi.ssl.SslRMIClientSocketFactory". |
| 1845 | // |
| 1846 | LiveRef liveRef = ((UnicastRef2)ref).getLiveRef(); |
| 1847 | RMIClientSocketFactory csf = liveRef.getClientSocketFactory(); |
| 1848 | if (csf == null || csf.getClass() != SslRMIClientSocketFactory.class) |
| 1849 | throw new SecurityException( |
| 1850 | "Expecting a " + SslRMIClientSocketFactory.class.getName() + |
| 1851 | " RMI client socket factory in stub!"); |
| 1852 | } |
| 1853 | |
| 1854 | //-------------------------------------------------------------------- |
| 1855 | // Private stuff - RMIServer creation |
| 1856 | //-------------------------------------------------------------------- |
| 1857 | |
| 1858 | private RMIServer findRMIServer(JMXServiceURL directoryURL, |
| 1859 | Map<String, Object> environment) |
| 1860 | throws NamingException, IOException { |
| 1861 | final boolean isIiop = RMIConnectorServer.isIiopURL(directoryURL,true); |
| 1862 | if (isIiop) { |
| 1863 | // Make sure java.naming.corba.orb is in the Map. |
| 1864 | environment.put(EnvHelp.DEFAULT_ORB,resolveOrb(environment)); |
| 1865 | } |
| 1866 | |
| 1867 | String path = directoryURL.getURLPath(); |
| 1868 | int end = path.indexOf(';'); |
| 1869 | if (end < 0) end = path.length(); |
| 1870 | if (path.startsWith("/jndi/")) |
| 1871 | return findRMIServerJNDI(path.substring(6,end), environment, isIiop); |
| 1872 | else if (path.startsWith("/stub/")) |
| 1873 | return findRMIServerJRMP(path.substring(6,end), environment, isIiop); |
| 1874 | else if (path.startsWith("/ior/")) |
| 1875 | return findRMIServerIIOP(path.substring(5,end), environment, isIiop); |
| 1876 | else { |
| 1877 | final String msg = "URL path must begin with /jndi/ or /stub/ " + |
| 1878 | "or /ior/: " + path; |
| 1879 | throw new MalformedURLException(msg); |
| 1880 | } |
| 1881 | } |
| 1882 | |
| 1883 | /** |
| 1884 | * Lookup the RMIServer stub in a directory. |
| 1885 | * @param jndiURL A JNDI URL indicating the location of the Stub |
| 1886 | * (see {@link javax.management.remote.rmi}), e.g.: |
| 1887 | * <ul><li><tt>rmi://registry-host:port/rmi-stub-name</tt></li> |
| 1888 | * <li>or <tt>iiop://cosnaming-host:port/iiop-stub-name</tt></li> |
| 1889 | * <li>or <tt>ldap://ldap-host:port/java-container-dn</tt></li> |
| 1890 | * </ul> |
| 1891 | * @param env the environment Map passed to the connector. |
| 1892 | * @param isIiop true if the stub is expected to be an IIOP stub. |
| 1893 | * @return The retrieved RMIServer stub. |
| 1894 | * @exception NamingException if the stub couldn't be found. |
| 1895 | **/ |
| 1896 | private RMIServer findRMIServerJNDI(String jndiURL, Map<String, ?> env, |
| 1897 | boolean isIiop) |
| 1898 | throws NamingException { |
| 1899 | |
| 1900 | InitialContext ctx = new InitialContext(EnvHelp.mapToHashtable(env)); |
| 1901 | |
| 1902 | Object objref = ctx.lookup(jndiURL); |
| 1903 | ctx.close(); |
| 1904 | |
| 1905 | if (isIiop) |
| 1906 | return narrowIIOPServer(objref); |
| 1907 | else |
| 1908 | return narrowJRMPServer(objref); |
| 1909 | } |
| 1910 | |
| 1911 | private static RMIServer narrowJRMPServer(Object objref) { |
| 1912 | |
| 1913 | return (RMIServer) objref; |
| 1914 | } |
| 1915 | |
| 1916 | private static RMIServer narrowIIOPServer(Object objref) { |
| 1917 | try { |
| 1918 | return (RMIServer) |
| 1919 | PortableRemoteObject.narrow(objref, RMIServer.class); |
| 1920 | } catch (ClassCastException e) { |
| 1921 | if (logger.traceOn()) |
| 1922 | logger.trace("narrowIIOPServer","Failed to narrow objref=" + |
| 1923 | objref + ": " + e); |
| 1924 | if (logger.debugOn()) logger.debug("narrowIIOPServer",e); |
| 1925 | return null; |
| 1926 | } |
| 1927 | } |
| 1928 | |
| 1929 | private RMIServer findRMIServerIIOP(String ior, Map env, boolean isIiop) { |
| 1930 | // could forbid "rmi:" URL here -- but do we need to? |
| 1931 | final ORB orb = (ORB) |
| 1932 | env.get(EnvHelp.DEFAULT_ORB); |
| 1933 | final Object stub = orb.string_to_object(ior); |
| 1934 | return (RMIServer) PortableRemoteObject.narrow(stub, RMIServer.class); |
| 1935 | } |
| 1936 | |
| 1937 | private RMIServer findRMIServerJRMP(String base64, Map env, boolean isIiop) |
| 1938 | throws IOException { |
| 1939 | // could forbid "iiop:" URL here -- but do we need to? |
| 1940 | final byte[] serialized; |
| 1941 | try { |
| 1942 | serialized = base64ToByteArray(base64); |
| 1943 | } catch (IllegalArgumentException e) { |
| 1944 | throw new MalformedURLException("Bad BASE64 encoding: " + |
| 1945 | e.getMessage()); |
| 1946 | } |
| 1947 | final ByteArrayInputStream bin = new ByteArrayInputStream(serialized); |
| 1948 | |
| 1949 | final ClassLoader loader = EnvHelp.resolveClientClassLoader(env); |
| 1950 | final ObjectInputStream oin = |
| 1951 | (loader == null) ? |
| 1952 | new ObjectInputStream(bin) : |
| 1953 | new ObjectInputStreamWithLoader(bin, loader); |
| 1954 | final Object stub; |
| 1955 | try { |
| 1956 | stub = oin.readObject(); |
| 1957 | } catch (ClassNotFoundException e) { |
| 1958 | throw new MalformedURLException("Class not found: " + e); |
| 1959 | } |
| 1960 | return (RMIServer) PortableRemoteObject.narrow(stub, RMIServer.class); |
| 1961 | } |
| 1962 | |
| 1963 | private static final class ObjectInputStreamWithLoader |
| 1964 | extends ObjectInputStream { |
| 1965 | ObjectInputStreamWithLoader(InputStream in, ClassLoader cl) |
| 1966 | throws IOException { |
| 1967 | super(in); |
| 1968 | this.loader = cl; |
| 1969 | } |
| 1970 | |
| 1971 | protected Class resolveClass(ObjectStreamClass classDesc) |
| 1972 | throws IOException, ClassNotFoundException { |
| 1973 | return Class.forName(classDesc.getName(), false, loader); |
| 1974 | } |
| 1975 | |
| 1976 | private final ClassLoader loader; |
| 1977 | } |
| 1978 | |
| 1979 | /* |
| 1980 | The following section of code avoids a class loading problem |
| 1981 | with RMI. The problem is that an RMI stub, when deserializing |
| 1982 | a remote method return value or exception, will first of all |
| 1983 | consult the first non-bootstrap class loader it finds in the |
| 1984 | call stack. This can lead to behavior that is not portable |
| 1985 | between implementations of the JMX Remote API. Notably, an |
| 1986 | implementation on J2SE 1.4 will find the RMI stub's loader on |
| 1987 | the stack. But in J2SE 5, this stub is loaded by the |
| 1988 | bootstrap loader, so RMI will find the loader of the user code |
| 1989 | that called an MBeanServerConnection method. |
| 1990 | |
| 1991 | To avoid this problem, we take advantage of what the RMI stub |
| 1992 | is doing internally. Each remote call will end up calling |
| 1993 | ref.invoke(...), where ref is the RemoteRef parameter given to |
| 1994 | the RMI stub's constructor. It is within this call that the |
| 1995 | deserialization will happen. So we fabricate our own RemoteRef |
| 1996 | that delegates everything to the "real" one but that is loaded |
| 1997 | by a class loader that knows no other classes. The class |
| 1998 | loader NoCallStackClassLoader does this: the RemoteRef is an |
| 1999 | instance of the class named by proxyRefClassName, which is |
| 2000 | fabricated by the class loader using byte code that is defined |
| 2001 | by the string below. |
| 2002 | |
| 2003 | The call stack when the deserialization happens is thus this: |
| 2004 | MBeanServerConnection.getAttribute (or whatever) |
| 2005 | -> RMIConnectionImpl_Stub.getAttribute |
| 2006 | -> ProxyRef.invoke(...getAttribute...) |
| 2007 | -> UnicastRef.invoke(...getAttribute...) |
| 2008 | -> internal RMI stuff |
| 2009 | |
| 2010 | Here UnicastRef is the RemoteRef created when the stub was |
| 2011 | deserialized (which is of some RMI internal class). It and the |
| 2012 | "internal RMI stuff" are loaded by the bootstrap loader, so are |
| 2013 | transparent to the stack search. The first non-bootstrap |
| 2014 | loader found is our ProxyRefLoader, as required. |
| 2015 | |
| 2016 | In a future version of this code as integrated into J2SE 5, |
| 2017 | this workaround could be replaced by direct access to the |
| 2018 | internals of RMI. For now, we use the same code base for J2SE |
| 2019 | and for the standalone Reference Implementation. |
| 2020 | |
| 2021 | The byte code below encodes the following class, compiled using |
| 2022 | J2SE 1.4.2 with the -g:none option. |
| 2023 | |
| 2024 | package com.sun.jmx.remote.internal; |
| 2025 | |
| 2026 | import java.lang.reflect.Method; |
| 2027 | import java.rmi.Remote; |
| 2028 | import java.rmi.server.RemoteRef; |
| 2029 | import com.sun.jmx.remote.internal.ProxyRef; |
| 2030 | |
| 2031 | public class PRef extends ProxyRef { |
| 2032 | public PRef(RemoteRef ref) { |
| 2033 | super(ref); |
| 2034 | } |
| 2035 | |
| 2036 | public Object invoke(Remote obj, Method method, |
| 2037 | Object[] params, long opnum) |
| 2038 | throws Exception { |
| 2039 | return ref.invoke(obj, method, params, opnum); |
| 2040 | } |
| 2041 | } |
| 2042 | */ |
| 2043 | |
| 2044 | private static final String rmiServerImplStubClassName = |
| 2045 | RMIServer.class.getName() + "Impl_Stub"; |
| 2046 | private static final Class rmiServerImplStubClass; |
| 2047 | private static final String rmiConnectionImplStubClassName = |
| 2048 | RMIConnection.class.getName() + "Impl_Stub"; |
| 2049 | private static final Class<?> rmiConnectionImplStubClass; |
| 2050 | private static final String pRefClassName = |
| 2051 | "com.sun.jmx.remote.internal.PRef"; |
| 2052 | private static final Constructor proxyRefConstructor; |
| 2053 | static { |
| 2054 | final String pRefByteCodeString = |
| 2055 | "\312\376\272\276\0\0\0.\0\27\12\0\5\0\15\11\0\4\0\16\13\0\17\0"+ |
| 2056 | "\20\7\0\21\7\0\22\1\0\6<init>\1\0\36(Ljava/rmi/server/RemoteRef;"+ |
| 2057 | ")V\1\0\4Code\1\0\6invoke\1\0S(Ljava/rmi/Remote;Ljava/lang/reflec"+ |
| 2058 | "t/Method;[Ljava/lang/Object;J)Ljava/lang/Object;\1\0\12Exception"+ |
| 2059 | "s\7\0\23\14\0\6\0\7\14\0\24\0\25\7\0\26\14\0\11\0\12\1\0\40com/"+ |
| 2060 | "sun/jmx/remote/internal/PRef\1\0$com/sun/jmx/remote/internal/Pr"+ |
| 2061 | "oxyRef\1\0\23java/lang/Exception\1\0\3ref\1\0\33Ljava/rmi/serve"+ |
| 2062 | "r/RemoteRef;\1\0\31java/rmi/server/RemoteRef\0!\0\4\0\5\0\0\0\0"+ |
| 2063 | "\0\2\0\1\0\6\0\7\0\1\0\10\0\0\0\22\0\2\0\2\0\0\0\6*+\267\0\1\261"+ |
| 2064 | "\0\0\0\0\0\1\0\11\0\12\0\2\0\10\0\0\0\33\0\6\0\6\0\0\0\17*\264\0"+ |
| 2065 | "\2+,-\26\4\271\0\3\6\0\260\0\0\0\0\0\13\0\0\0\4\0\1\0\14\0\0"; |
| 2066 | final byte[] pRefByteCode = |
| 2067 | NoCallStackClassLoader.stringToBytes(pRefByteCodeString); |
| 2068 | PrivilegedExceptionAction<Constructor<?>> action = |
| 2069 | new PrivilegedExceptionAction<Constructor<?>>() { |
| 2070 | public Constructor<?> run() throws Exception { |
| 2071 | Class thisClass = RMIConnector.class; |
| 2072 | ClassLoader thisLoader = thisClass.getClassLoader(); |
| 2073 | ProtectionDomain thisProtectionDomain = |
| 2074 | thisClass.getProtectionDomain(); |
| 2075 | String[] otherClassNames = {ProxyRef.class.getName()}; |
| 2076 | ClassLoader cl = |
| 2077 | new NoCallStackClassLoader(pRefClassName, |
| 2078 | pRefByteCode, |
| 2079 | otherClassNames, |
| 2080 | thisLoader, |
| 2081 | thisProtectionDomain); |
| 2082 | Class<?> c = cl.loadClass(pRefClassName); |
| 2083 | return c.getConstructor(RemoteRef.class); |
| 2084 | } |
| 2085 | }; |
| 2086 | |
| 2087 | Class serverStubClass; |
| 2088 | try { |
| 2089 | serverStubClass = Class.forName(rmiServerImplStubClassName); |
| 2090 | } catch (Exception e) { |
| 2091 | logger.error("<clinit>", |
| 2092 | "Failed to instantiate " + |
| 2093 | rmiServerImplStubClassName + ": " + e); |
| 2094 | logger.debug("<clinit>",e); |
| 2095 | serverStubClass = null; |
| 2096 | } |
| 2097 | rmiServerImplStubClass = serverStubClass; |
| 2098 | |
| 2099 | Class<?> stubClass; |
| 2100 | Constructor constr; |
| 2101 | try { |
| 2102 | stubClass = Class.forName(rmiConnectionImplStubClassName); |
| 2103 | constr = (Constructor) AccessController.doPrivileged(action); |
| 2104 | } catch (Exception e) { |
| 2105 | logger.error("<clinit>", |
| 2106 | "Failed to initialize proxy reference constructor "+ |
| 2107 | "for " + rmiConnectionImplStubClassName + ": " + e); |
| 2108 | logger.debug("<clinit>",e); |
| 2109 | stubClass = null; |
| 2110 | constr = null; |
| 2111 | } |
| 2112 | rmiConnectionImplStubClass = stubClass; |
| 2113 | proxyRefConstructor = constr; |
| 2114 | } |
| 2115 | |
| 2116 | private static RMIConnection shadowJrmpStub(RemoteObject stub) |
| 2117 | throws InstantiationException, IllegalAccessException, |
| 2118 | InvocationTargetException, ClassNotFoundException, |
| 2119 | NoSuchMethodException { |
| 2120 | RemoteRef ref = stub.getRef(); |
| 2121 | RemoteRef proxyRef = (RemoteRef) |
| 2122 | proxyRefConstructor.newInstance(new Object[] {ref}); |
| 2123 | final Class[] constrTypes = {RemoteRef.class}; |
| 2124 | final Constructor rmiConnectionImplStubConstructor = |
| 2125 | rmiConnectionImplStubClass.getConstructor(constrTypes); |
| 2126 | Object[] args = {proxyRef}; |
| 2127 | RMIConnection proxyStub = (RMIConnection) |
| 2128 | rmiConnectionImplStubConstructor.newInstance(args); |
| 2129 | return proxyStub; |
| 2130 | } |
| 2131 | |
| 2132 | /* |
| 2133 | The following code performs a similar trick for RMI/IIOP to the |
| 2134 | one described above for RMI/JRMP. Unlike JRMP, though, we |
| 2135 | can't easily insert an object between the RMIConnection stub |
| 2136 | and the RMI/IIOP deserialization code, as explained below. |
| 2137 | |
| 2138 | A method in an RMI/IIOP stub does the following. It makes an |
| 2139 | org.omg.CORBA_2_3.portable.OutputStream for each request, and |
| 2140 | writes the parameters to it. Then it calls |
| 2141 | _invoke(OutputStream) which it inherits from CORBA's |
| 2142 | ObjectImpl. That returns an |
| 2143 | org.omg.CORBA_2_3.portable.InputStream. The return value is |
| 2144 | read from this InputStream. So the stack during |
| 2145 | deserialization looks like this: |
| 2146 | |
| 2147 | MBeanServerConnection.getAttribute (or whatever) |
| 2148 | -> _RMIConnection_Stub.getAttribute |
| 2149 | -> Util.readAny (a CORBA method) |
| 2150 | -> InputStream.read_any |
| 2151 | -> internal CORBA stuff |
| 2152 | |
| 2153 | What we would have *liked* to have done would be the same thing |
| 2154 | as for RMI/JRMP. We create a "ProxyDelegate" that is an |
| 2155 | org.omg.CORBA.portable.Delegate that simply forwards every |
| 2156 | operation to the real original Delegate from the RMIConnection |
| 2157 | stub, except that the InputStream returned by _invoke is |
| 2158 | wrapped by a "ProxyInputStream" that is loaded by our |
| 2159 | NoCallStackClassLoader. |
| 2160 | |
| 2161 | Unfortunately, this doesn't work, at least with Sun's J2SE |
| 2162 | 1.4.2, because the CORBA code is not designed to allow you to |
| 2163 | change Delegates arbitrarily. You get a ClassCastException |
| 2164 | from code that expects the Delegate to implement an internal |
| 2165 | interface. |
| 2166 | |
| 2167 | So instead we do the following. We create a subclass of the |
| 2168 | stub that overrides the _invoke method so as to wrap the |
| 2169 | returned InputStream in a ProxyInputStream. We create a |
| 2170 | subclass of ProxyInputStream using the NoCallStackClassLoader |
| 2171 | and override its read_any and read_value(Class) methods. |
| 2172 | (These are the only methods called during deserialization of |
| 2173 | MBeanServerConnection return values.) We extract the Delegate |
| 2174 | from the original stub and insert it into our subclass stub, |
| 2175 | and away we go. The state of a stub consists solely of its |
| 2176 | Delegate. |
| 2177 | |
| 2178 | We also need to catch ApplicationException, which will encode |
| 2179 | any exceptions declared in the throws clause of the called |
| 2180 | method. Its InputStream needs to be wrapped in a |
| 2181 | ProxyInputSteam too. |
| 2182 | |
| 2183 | We override _releaseReply in the stub subclass so that it |
| 2184 | replaces a ProxyInputStream argument with the original |
| 2185 | InputStream. This avoids problems if the implementation of |
| 2186 | _releaseReply ends up casting this InputStream to an |
| 2187 | implementation-specific interface (which in Sun's J2SE 5 it |
| 2188 | does). |
| 2189 | |
| 2190 | It is not strictly necessary for the stub subclass to be loaded |
| 2191 | by a NoCallStackClassLoader, since the call-stack search stops |
| 2192 | at the ProxyInputStream subclass. However, it is convenient |
| 2193 | for two reasons. One is that it means that the |
| 2194 | ProxyInputStream subclass can be accessed directly, without |
| 2195 | using reflection. The other is that it avoids build problems, |
| 2196 | since usually stubs are created after other classes are |
| 2197 | compiled, so we can't access them from this class without, |
| 2198 | again, using reflection. |
| 2199 | |
| 2200 | The strings below encode the following two Java classes, |
| 2201 | compiled using J2SE 1.4.2 with javac -g:none. |
| 2202 | |
| 2203 | package com.sun.jmx.remote.internal; |
| 2204 | |
| 2205 | import org.omg.stub.javax.management.remote.rmi._RMIConnection_Stub; |
| 2206 | |
| 2207 | import org.omg.CORBA.portable.ApplicationException; |
| 2208 | import org.omg.CORBA.portable.InputStream; |
| 2209 | import org.omg.CORBA.portable.OutputStream; |
| 2210 | import org.omg.CORBA.portable.RemarshalException; |
| 2211 | |
| 2212 | public class ProxyStub extends _RMIConnection_Stub { |
| 2213 | public InputStream _invoke(OutputStream out) |
| 2214 | throws ApplicationException, RemarshalException { |
| 2215 | try { |
| 2216 | return new PInputStream(super._invoke(out)); |
| 2217 | } catch (ApplicationException e) { |
| 2218 | InputStream pis = new PInputStream(e.getInputStream()); |
| 2219 | throw new ApplicationException(e.getId(), pis); |
| 2220 | } |
| 2221 | } |
| 2222 | |
| 2223 | public void _releaseReply(InputStream in) { |
| 2224 | PInputStream pis = (PInputStream) in; |
| 2225 | super._releaseReply(pis.getProxiedInputStream()); |
| 2226 | } |
| 2227 | } |
| 2228 | |
| 2229 | package com.sun.jmx.remote.internal; |
| 2230 | |
| 2231 | public class PInputStream extends ProxyInputStream { |
| 2232 | public PInputStream(org.omg.CORBA.portable.InputStream in) { |
| 2233 | super(in); |
| 2234 | } |
| 2235 | |
| 2236 | public org.omg.CORBA.Any read_any() { |
| 2237 | return in.read_any(); |
| 2238 | } |
| 2239 | |
| 2240 | public java.io.Serializable read_value(Class clz) { |
| 2241 | return narrow().read_value(clz); |
| 2242 | } |
| 2243 | } |
| 2244 | |
| 2245 | |
| 2246 | */ |
| 2247 | private static final String iiopConnectionStubClassName = |
| 2248 | "org.omg.stub.javax.management.remote.rmi._RMIConnection_Stub"; |
| 2249 | private static final String proxyStubClassName = |
| 2250 | "com.sun.jmx.remote.internal.ProxyStub"; |
| 2251 | private static final String pInputStreamClassName = |
| 2252 | "com.sun.jmx.remote.internal.PInputStream"; |
| 2253 | private static final Class proxyStubClass; |
| 2254 | static { |
| 2255 | final String proxyStubByteCodeString = |
| 2256 | "\312\376\272\276\0\0\0.\0)\12\0\14\0\26\7\0\27\12\0\14\0\30\12"+ |
| 2257 | "\0\2\0\31\7\0\32\12\0\5\0\33\12\0\5\0\34\12\0\5\0\35\12\0\2\0"+ |
| 2258 | "\36\12\0\14\0\37\7\0\40\7\0!\1\0\6<init>\1\0\3()V\1\0\4Code\1"+ |
| 2259 | "\0\7_invoke\1\0K(Lorg/omg/CORBA/portable/OutputStream;)Lorg/o"+ |
| 2260 | "mg/CORBA/portable/InputStream;\1\0\12Exceptions\7\0\"\1\0\15_"+ |
| 2261 | "releaseReply\1\0'(Lorg/omg/CORBA/portable/InputStream;)V\14\0"+ |
| 2262 | "\15\0\16\1\0(com/sun/jmx/remote/internal/PInputStream\14\0\20"+ |
| 2263 | "\0\21\14\0\15\0\25\1\0+org/omg/CORBA/portable/ApplicationExce"+ |
| 2264 | "ption\14\0#\0$\14\0%\0&\14\0\15\0'\14\0(\0$\14\0\24\0\25\1\0%"+ |
| 2265 | "com/sun/jmx/remote/internal/ProxyStub\1\0<org/omg/stub/javax/"+ |
| 2266 | "management/remote/rmi/_RMIConnection_Stub\1\0)org/omg/CORBA/p"+ |
| 2267 | "ortable/RemarshalException\1\0\16getInputStream\1\0&()Lorg/om"+ |
| 2268 | "g/CORBA/portable/InputStream;\1\0\5getId\1\0\24()Ljava/lang/S"+ |
| 2269 | "tring;\1\09(Ljava/lang/String;Lorg/omg/CORBA/portable/InputSt"+ |
| 2270 | "ream;)V\1\0\25getProxiedInputStream\0!\0\13\0\14\0\0\0\0\0\3\0"+ |
| 2271 | "\1\0\15\0\16\0\1\0\17\0\0\0\21\0\1\0\1\0\0\0\5*\267\0\1\261\0"+ |
| 2272 | "\0\0\0\0\1\0\20\0\21\0\2\0\17\0\0\0;\0\4\0\4\0\0\0'\273\0\2Y*"+ |
| 2273 | "+\267\0\3\267\0\4\260M\273\0\2Y,\266\0\6\267\0\4N\273\0\5Y,\266"+ |
| 2274 | "\0\7-\267\0\10\277\0\1\0\0\0\14\0\15\0\5\0\0\0\22\0\0\0\6\0\2"+ |
| 2275 | "\0\5\0\23\0\1\0\24\0\25\0\1\0\17\0\0\0\36\0\2\0\2\0\0\0\22+\306"+ |
| 2276 | "\0\13+\300\0\2\266\0\11L*+\267\0\12\261\0\0\0\0\0\0"; |
| 2277 | final String pInputStreamByteCodeString = |
| 2278 | "\312\376\272\276\0\0\0.\0\36\12\0\7\0\17\11\0\6\0\20\12\0\21\0"+ |
| 2279 | "\22\12\0\6\0\23\12\0\24\0\25\7\0\26\7\0\27\1\0\6<init>\1\0'(L"+ |
| 2280 | "org/omg/CORBA/portable/InputStream;)V\1\0\4Code\1\0\10read_an"+ |
| 2281 | "y\1\0\25()Lorg/omg/CORBA/Any;\1\0\12read_value\1\0)(Ljava/lan"+ |
| 2282 | "g/Class;)Ljava/io/Serializable;\14\0\10\0\11\14\0\30\0\31\7\0"+ |
| 2283 | "\32\14\0\13\0\14\14\0\33\0\34\7\0\35\14\0\15\0\16\1\0(com/sun"+ |
| 2284 | "/jmx/remote/internal/PInputStream\1\0,com/sun/jmx/remote/inte"+ |
| 2285 | "rnal/ProxyInputStream\1\0\2in\1\0$Lorg/omg/CORBA/portable/Inp"+ |
| 2286 | "utStream;\1\0\"org/omg/CORBA/portable/InputStream\1\0\6narrow"+ |
| 2287 | "\1\0*()Lorg/omg/CORBA_2_3/portable/InputStream;\1\0&org/omg/C"+ |
| 2288 | "ORBA_2_3/portable/InputStream\0!\0\6\0\7\0\0\0\0\0\3\0\1\0\10"+ |
| 2289 | "\0\11\0\1\0\12\0\0\0\22\0\2\0\2\0\0\0\6*+\267\0\1\261\0\0\0\0"+ |
| 2290 | "\0\1\0\13\0\14\0\1\0\12\0\0\0\24\0\1\0\1\0\0\0\10*\264\0\2\266"+ |
| 2291 | "\0\3\260\0\0\0\0\0\1\0\15\0\16\0\1\0\12\0\0\0\25\0\2\0\2\0\0\0"+ |
| 2292 | "\11*\266\0\4+\266\0\5\260\0\0\0\0\0\0"; |
| 2293 | final byte[] proxyStubByteCode = |
| 2294 | NoCallStackClassLoader.stringToBytes(proxyStubByteCodeString); |
| 2295 | final byte[] pInputStreamByteCode = |
| 2296 | NoCallStackClassLoader.stringToBytes(pInputStreamByteCodeString); |
| 2297 | final String[] classNames={proxyStubClassName, pInputStreamClassName}; |
| 2298 | final byte[][] byteCodes = {proxyStubByteCode, pInputStreamByteCode}; |
| 2299 | final String[] otherClassNames = { |
| 2300 | iiopConnectionStubClassName, |
| 2301 | ProxyInputStream.class.getName(), |
| 2302 | }; |
| 2303 | PrivilegedExceptionAction<Class<?>> action = |
| 2304 | new PrivilegedExceptionAction<Class<?>>() { |
| 2305 | public Class<?> run() throws Exception { |
| 2306 | |
| 2307 | Class thisClass = RMIConnector.class; |
| 2308 | ClassLoader thisLoader = thisClass.getClassLoader(); |
| 2309 | ProtectionDomain thisProtectionDomain = |
| 2310 | thisClass.getProtectionDomain(); |
| 2311 | ClassLoader cl = |
| 2312 | new NoCallStackClassLoader(classNames, |
| 2313 | byteCodes, |
| 2314 | otherClassNames, |
| 2315 | thisLoader, |
| 2316 | thisProtectionDomain); |
| 2317 | return cl.loadClass(proxyStubClassName); |
| 2318 | } |
| 2319 | }; |
| 2320 | Class<?> stubClass; |
| 2321 | try { |
| 2322 | stubClass = AccessController.doPrivileged(action); |
| 2323 | } catch (Exception e) { |
| 2324 | logger.error("<clinit>", |
| 2325 | "Unexpected exception making shadow IIOP stub class: "+e); |
| 2326 | logger.debug("<clinit>",e); |
| 2327 | stubClass = null; |
| 2328 | } |
| 2329 | proxyStubClass = stubClass; |
| 2330 | } |
| 2331 | |
| 2332 | private static RMIConnection shadowIiopStub(Stub stub) |
| 2333 | throws InstantiationException, IllegalAccessException { |
| 2334 | Stub proxyStub = (Stub) proxyStubClass.newInstance(); |
| 2335 | proxyStub._set_delegate(stub._get_delegate()); |
| 2336 | return (RMIConnection) proxyStub; |
| 2337 | } |
| 2338 | |
| 2339 | private static RMIConnection getConnection(RMIServer server, |
| 2340 | Object credentials, |
| 2341 | boolean checkStub) |
| 2342 | throws IOException { |
| 2343 | RMIConnection c = server.newClient(credentials); |
| 2344 | if (checkStub) checkStub(c, rmiConnectionImplStubClass); |
| 2345 | try { |
| 2346 | if (c.getClass() == rmiConnectionImplStubClass) |
| 2347 | return shadowJrmpStub((RemoteObject) c); |
| 2348 | if (c.getClass().getName().equals(iiopConnectionStubClassName)) |
| 2349 | return shadowIiopStub((Stub) c); |
| 2350 | logger.trace("getConnection", |
| 2351 | "Did not wrap " + c.getClass() + " to foil " + |
| 2352 | "stack search for classes: class loading semantics " + |
| 2353 | "may be incorrect"); |
| 2354 | } catch (Exception e) { |
| 2355 | logger.error("getConnection", |
| 2356 | "Could not wrap " + c.getClass() + " to foil " + |
| 2357 | "stack search for classes: class loading semantics " + |
| 2358 | "may be incorrect: " + e); |
| 2359 | logger.debug("getConnection",e); |
| 2360 | // so just return the original stub, which will work for all |
| 2361 | // but the most exotic class loading situations |
| 2362 | } |
| 2363 | return c; |
| 2364 | } |
| 2365 | |
| 2366 | private static byte[] base64ToByteArray(String s) { |
| 2367 | int sLen = s.length(); |
| 2368 | int numGroups = sLen/4; |
| 2369 | if (4*numGroups != sLen) |
| 2370 | throw new IllegalArgumentException( |
| 2371 | "String length must be a multiple of four."); |
| 2372 | int missingBytesInLastGroup = 0; |
| 2373 | int numFullGroups = numGroups; |
| 2374 | if (sLen != 0) { |
| 2375 | if (s.charAt(sLen-1) == '=') { |
| 2376 | missingBytesInLastGroup++; |
| 2377 | numFullGroups--; |
| 2378 | } |
| 2379 | if (s.charAt(sLen-2) == '=') |
| 2380 | missingBytesInLastGroup++; |
| 2381 | } |
| 2382 | byte[] result = new byte[3*numGroups - missingBytesInLastGroup]; |
| 2383 | |
| 2384 | // Translate all full groups from base64 to byte array elements |
| 2385 | int inCursor = 0, outCursor = 0; |
| 2386 | for (int i=0; i<numFullGroups; i++) { |
| 2387 | int ch0 = base64toInt(s.charAt(inCursor++)); |
| 2388 | int ch1 = base64toInt(s.charAt(inCursor++)); |
| 2389 | int ch2 = base64toInt(s.charAt(inCursor++)); |
| 2390 | int ch3 = base64toInt(s.charAt(inCursor++)); |
| 2391 | result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4)); |
| 2392 | result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2)); |
| 2393 | result[outCursor++] = (byte) ((ch2 << 6) | ch3); |
| 2394 | } |
| 2395 | |
| 2396 | // Translate partial group, if present |
| 2397 | if (missingBytesInLastGroup != 0) { |
| 2398 | int ch0 = base64toInt(s.charAt(inCursor++)); |
| 2399 | int ch1 = base64toInt(s.charAt(inCursor++)); |
| 2400 | result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4)); |
| 2401 | |
| 2402 | if (missingBytesInLastGroup == 1) { |
| 2403 | int ch2 = base64toInt(s.charAt(inCursor++)); |
| 2404 | result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2)); |
| 2405 | } |
| 2406 | } |
| 2407 | // assert inCursor == s.length()-missingBytesInLastGroup; |
| 2408 | // assert outCursor == result.length; |
| 2409 | return result; |
| 2410 | } |
| 2411 | |
| 2412 | /** |
| 2413 | * Translates the specified character, which is assumed to be in the |
| 2414 | * "Base 64 Alphabet" into its equivalent 6-bit positive integer. |
| 2415 | * |
| 2416 | * @throws IllegalArgumentException if |
| 2417 | * c is not in the Base64 Alphabet. |
| 2418 | */ |
| 2419 | private static int base64toInt(char c) { |
| 2420 | int result; |
| 2421 | |
| 2422 | if (c >= base64ToInt.length) |
| 2423 | result = -1; |
| 2424 | else |
| 2425 | result = base64ToInt[c]; |
| 2426 | |
| 2427 | if (result < 0) |
| 2428 | throw new IllegalArgumentException("Illegal character " + c); |
| 2429 | return result; |
| 2430 | } |
| 2431 | |
| 2432 | /** |
| 2433 | * This array is a lookup table that translates unicode characters |
| 2434 | * drawn from the "Base64 Alphabet" (as specified in Table 1 of RFC 2045) |
| 2435 | * into their 6-bit positive integer equivalents. Characters that |
| 2436 | * are not in the Base64 alphabet but fall within the bounds of the |
| 2437 | * array are translated to -1. |
| 2438 | */ |
| 2439 | private static final byte base64ToInt[] = { |
| 2440 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 2441 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 2442 | -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, |
| 2443 | 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, |
| 2444 | 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, |
| 2445 | 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, |
| 2446 | 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 |
| 2447 | }; |
| 2448 | |
| 2449 | //-------------------------------------------------------------------- |
| 2450 | // Private stuff - Find / Set default class loader |
| 2451 | //-------------------------------------------------------------------- |
| 2452 | private ClassLoader pushDefaultClassLoader() { |
| 2453 | final Thread t = Thread.currentThread(); |
| 2454 | final ClassLoader old = t.getContextClassLoader(); |
| 2455 | if (defaultClassLoader != null) |
| 2456 | AccessController.doPrivileged(new PrivilegedAction<Void>() { |
| 2457 | public Void run() { |
| 2458 | t.setContextClassLoader(defaultClassLoader); |
| 2459 | return null; |
| 2460 | } |
| 2461 | }); |
| 2462 | return old; |
| 2463 | } |
| 2464 | |
| 2465 | private void popDefaultClassLoader(final ClassLoader old) { |
| 2466 | AccessController.doPrivileged(new PrivilegedAction<Void>() { |
| 2467 | public Void run() { |
| 2468 | Thread.currentThread().setContextClassLoader(old); |
| 2469 | return null; |
| 2470 | } |
| 2471 | }); |
| 2472 | } |
| 2473 | |
| 2474 | //-------------------------------------------------------------------- |
| 2475 | // Private variables |
| 2476 | //-------------------------------------------------------------------- |
| 2477 | /** |
| 2478 | * @serial The RMIServer stub of the RMI JMX Connector server to |
| 2479 | * which this client connector is (or will be) connected. This |
| 2480 | * field can be null when <var>jmxServiceURL</var> is not |
| 2481 | * null. This includes the case where <var>jmxServiceURL</var> |
| 2482 | * contains a serialized RMIServer stub. If both |
| 2483 | * <var>rmiServer</var> and <var>jmxServiceURL</var> are null then |
| 2484 | * serialization will fail. |
| 2485 | * |
| 2486 | * @see #RMIConnector(RMIServer,Map) |
| 2487 | **/ |
| 2488 | private final RMIServer rmiServer; |
| 2489 | |
| 2490 | /** |
| 2491 | * @serial The JMXServiceURL of the RMI JMX Connector server to |
| 2492 | * which this client connector will be connected. This field can |
| 2493 | * be null when <var>rmiServer</var> is not null. If both |
| 2494 | * <var>rmiServer</var> and <var>jmxServiceURL</var> are null then |
| 2495 | * serialization will fail. |
| 2496 | * |
| 2497 | * @see #RMIConnector(JMXServiceURL,Map) |
| 2498 | **/ |
| 2499 | private final JMXServiceURL jmxServiceURL; |
| 2500 | |
| 2501 | // --------------------------------------------------------- |
| 2502 | // WARNING - WARNING - WARNING - WARNING - WARNING - WARNING |
| 2503 | // --------------------------------------------------------- |
| 2504 | // Any transient variable which needs to be initialized should |
| 2505 | // be initialized in the method initTransient() |
| 2506 | private transient Map<String, Object> env; |
| 2507 | private transient ClassLoader defaultClassLoader; |
| 2508 | private transient RMIConnection connection; |
| 2509 | private transient String connectionId; |
| 2510 | |
| 2511 | private transient long clientNotifSeqNo = 0; |
| 2512 | |
| 2513 | private transient WeakHashMap<Subject, MBeanServerConnection> rmbscMap; |
| 2514 | |
| 2515 | private transient RMINotifClient rmiNotifClient; |
| 2516 | // = new RMINotifClient(new Integer(0)); |
| 2517 | |
| 2518 | private transient long clientNotifCounter = 0; |
| 2519 | |
| 2520 | private transient boolean connected; |
| 2521 | // = false; |
| 2522 | private transient boolean terminated; |
| 2523 | // = false; |
| 2524 | |
| 2525 | private transient Exception closeException; |
| 2526 | |
| 2527 | private transient NotificationBroadcasterSupport connectionBroadcaster; |
| 2528 | |
| 2529 | private transient ClientCommunicatorAdmin communicatorAdmin; |
| 2530 | |
| 2531 | /** |
| 2532 | * A static WeakReference to an {@link org.omg.CORBA.ORB ORB} to |
| 2533 | * connect unconnected stubs. |
| 2534 | **/ |
| 2535 | private static WeakReference<ORB> orb = null; |
| 2536 | |
| 2537 | // TRACES & DEBUG |
| 2538 | //--------------- |
| 2539 | private static String objects(final Object[] objs) { |
| 2540 | if (objs == null) |
| 2541 | return "null"; |
| 2542 | else |
| 2543 | return Arrays.asList(objs).toString(); |
| 2544 | } |
| 2545 | |
| 2546 | private static String strings(final String[] strs) { |
| 2547 | return objects(strs); |
| 2548 | } |
| 2549 | } |