J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2006 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 | package sun.management.snmp.jvminstr; |
| 26 | |
| 27 | // java imports |
| 28 | // |
| 29 | import java.util.Hashtable; |
| 30 | import java.util.List; |
| 31 | import java.util.ArrayList; |
| 32 | import java.util.Iterator; |
| 33 | import java.lang.ref.WeakReference; |
| 34 | |
| 35 | // jmx imports |
| 36 | // |
| 37 | import javax.management.MBeanServer; |
| 38 | import javax.management.ObjectName; |
| 39 | import javax.management.InstanceAlreadyExistsException; |
| 40 | import javax.management.NotificationEmitter; |
| 41 | import javax.management.NotificationListener; |
| 42 | import javax.management.Notification; |
| 43 | import javax.management.ListenerNotFoundException; |
| 44 | import javax.management.openmbean.CompositeData; |
| 45 | |
| 46 | // jdmk imports |
| 47 | // |
| 48 | import com.sun.jmx.snmp.agent.SnmpMib; |
| 49 | import com.sun.jmx.snmp.daemon.SnmpAdaptorServer; |
| 50 | import com.sun.jmx.snmp.SnmpPeer; |
| 51 | import com.sun.jmx.snmp.SnmpParameters; |
| 52 | |
| 53 | import com.sun.jmx.snmp.SnmpOidTable; |
| 54 | import com.sun.jmx.snmp.SnmpOid; |
| 55 | import com.sun.jmx.snmp.SnmpVarBindList; |
| 56 | import com.sun.jmx.snmp.SnmpVarBind; |
| 57 | import com.sun.jmx.snmp.SnmpCounter; |
| 58 | import com.sun.jmx.snmp.SnmpCounter64; |
| 59 | import com.sun.jmx.snmp.SnmpString; |
| 60 | import com.sun.jmx.snmp.SnmpInt; |
| 61 | import com.sun.jmx.snmp.Enumerated; |
| 62 | import com.sun.jmx.snmp.agent.SnmpMibTable; |
| 63 | |
| 64 | import sun.management.snmp.jvmmib.JVM_MANAGEMENT_MIBOidTable; |
| 65 | import sun.management.snmp.jvmmib.JVM_MANAGEMENT_MIB; |
| 66 | import sun.management.snmp.jvmmib.JvmMemoryMeta; |
| 67 | import sun.management.snmp.jvmmib.JvmThreadingMeta; |
| 68 | import sun.management.snmp.jvmmib.JvmRuntimeMeta; |
| 69 | import sun.management.snmp.jvmmib.JvmClassLoadingMeta; |
| 70 | import sun.management.snmp.jvmmib.JvmCompilationMeta; |
| 71 | import sun.management.snmp.util.MibLogger; |
| 72 | import sun.management.snmp.util.SnmpCachedData; |
| 73 | import sun.management.snmp.util.SnmpTableHandler; |
| 74 | |
| 75 | //java management imports |
| 76 | import java.lang.management.ManagementFactory; |
| 77 | import java.lang.management.MemoryPoolMXBean; |
| 78 | import java.lang.management.MemoryNotificationInfo; |
| 79 | import java.lang.management.MemoryType; |
| 80 | |
| 81 | public class JVM_MANAGEMENT_MIB_IMPL extends JVM_MANAGEMENT_MIB { |
| 82 | private static final long serialVersionUID = -8104825586888859831L; |
| 83 | |
| 84 | private static final MibLogger log = |
| 85 | new MibLogger(JVM_MANAGEMENT_MIB_IMPL.class); |
| 86 | |
| 87 | private static WeakReference<SnmpOidTable> tableRef; |
| 88 | |
| 89 | public static SnmpOidTable getOidTable() { |
| 90 | SnmpOidTable table = null; |
| 91 | if(tableRef == null) { |
| 92 | table = new JVM_MANAGEMENT_MIBOidTable(); |
| 93 | tableRef = new WeakReference<SnmpOidTable>(table); |
| 94 | return table; |
| 95 | } |
| 96 | |
| 97 | table = tableRef.get(); |
| 98 | if(table == null) { |
| 99 | table = new JVM_MANAGEMENT_MIBOidTable(); |
| 100 | tableRef = new WeakReference<SnmpOidTable>(table); |
| 101 | } |
| 102 | |
| 103 | return table; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Handler waiting for memory <CODE>Notification</CODE>. |
| 108 | * Translate each JMX notification in SNMP trap. |
| 109 | */ |
| 110 | private class NotificationHandler implements NotificationListener { |
| 111 | public void handleNotification(Notification notification, |
| 112 | Object handback) { |
| 113 | log.debug("handleNotification", "Received notification [ " + |
| 114 | notification.getType() + "]"); |
| 115 | |
| 116 | String type = notification.getType(); |
| 117 | if (type.equals(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED) || |
| 118 | type.equals(MemoryNotificationInfo. |
| 119 | MEMORY_COLLECTION_THRESHOLD_EXCEEDED)) { |
| 120 | MemoryNotificationInfo minfo = MemoryNotificationInfo. |
| 121 | from((CompositeData) notification.getUserData()); |
| 122 | SnmpCounter64 count = new SnmpCounter64(minfo.getCount()); |
| 123 | SnmpCounter64 used = |
| 124 | new SnmpCounter64(minfo.getUsage().getUsed()); |
| 125 | SnmpString poolName = new SnmpString(minfo.getPoolName()); |
| 126 | SnmpOid entryIndex = |
| 127 | getJvmMemPoolEntryIndex(minfo.getPoolName()); |
| 128 | |
| 129 | if (entryIndex == null) { |
| 130 | log.error("handleNotification", |
| 131 | "Error: Can't find entry index for Memory Pool: " |
| 132 | + minfo.getPoolName() +": " + |
| 133 | "No trap emitted for " + type); |
| 134 | return; |
| 135 | } |
| 136 | |
| 137 | SnmpOid trap = null; |
| 138 | |
| 139 | final SnmpOidTable mibTable = getOidTable(); |
| 140 | try { |
| 141 | SnmpOid usedOid = null; |
| 142 | SnmpOid countOid = null; |
| 143 | |
| 144 | if (type.equals(MemoryNotificationInfo. |
| 145 | MEMORY_THRESHOLD_EXCEEDED)) { |
| 146 | trap = new SnmpOid(mibTable. |
| 147 | resolveVarName("jvmLowMemoryPoolUsageNotif").getOid()); |
| 148 | usedOid = |
| 149 | new SnmpOid(mibTable. |
| 150 | resolveVarName("jvmMemPoolUsed").getOid() + |
| 151 | "." + entryIndex); |
| 152 | countOid = |
| 153 | new SnmpOid(mibTable. |
| 154 | resolveVarName("jvmMemPoolThreshdCount").getOid() |
| 155 | + "." + entryIndex); |
| 156 | } else if (type.equals(MemoryNotificationInfo. |
| 157 | MEMORY_COLLECTION_THRESHOLD_EXCEEDED)) { |
| 158 | trap = new SnmpOid(mibTable. |
| 159 | resolveVarName("jvmLowMemoryPoolCollectNotif"). |
| 160 | getOid()); |
| 161 | usedOid = |
| 162 | new SnmpOid(mibTable. |
| 163 | resolveVarName("jvmMemPoolCollectUsed").getOid() + |
| 164 | "." + entryIndex); |
| 165 | countOid = |
| 166 | new SnmpOid(mibTable. |
| 167 | resolveVarName("jvmMemPoolCollectThreshdCount"). |
| 168 | getOid() + |
| 169 | "." + entryIndex); |
| 170 | } |
| 171 | |
| 172 | //Datas |
| 173 | SnmpVarBindList list = new SnmpVarBindList(); |
| 174 | SnmpOid poolNameOid = |
| 175 | new SnmpOid(mibTable. |
| 176 | resolveVarName("jvmMemPoolName").getOid() + |
| 177 | "." + entryIndex); |
| 178 | |
| 179 | SnmpVarBind varCount = new SnmpVarBind(countOid, count); |
| 180 | SnmpVarBind varUsed = new SnmpVarBind(usedOid, used); |
| 181 | SnmpVarBind varPoolName = new SnmpVarBind(poolNameOid, |
| 182 | poolName); |
| 183 | |
| 184 | list.add(varPoolName); |
| 185 | list.add(varCount); |
| 186 | list.add(varUsed); |
| 187 | |
| 188 | sendTrap(trap, list); |
| 189 | }catch(Exception e) { |
| 190 | log.error("handleNotification", |
| 191 | "Exception occured : " + e); |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * List of notification targets. |
| 199 | */ |
| 200 | private ArrayList<NotificationTarget> notificationTargets = |
| 201 | new ArrayList<NotificationTarget>(); |
| 202 | private final NotificationEmitter emitter; |
| 203 | private final NotificationHandler handler; |
| 204 | |
| 205 | |
| 206 | /** |
| 207 | * Instantiate a JVM MIB intrusmentation. |
| 208 | * A <CODE>NotificationListener</CODE> is added to the <CODE>MemoryMXBean</CODE> |
| 209 | * <CODE>NotificationEmitter</CODE> |
| 210 | */ |
| 211 | public JVM_MANAGEMENT_MIB_IMPL() { |
| 212 | handler = new NotificationHandler(); |
| 213 | emitter = (NotificationEmitter) ManagementFactory.getMemoryMXBean(); |
| 214 | emitter.addNotificationListener(handler, null, null); |
| 215 | } |
| 216 | |
| 217 | private synchronized void sendTrap(SnmpOid trap, SnmpVarBindList list) { |
| 218 | final Iterator iterator = notificationTargets.iterator(); |
| 219 | final SnmpAdaptorServer adaptor = |
| 220 | (SnmpAdaptorServer) getSnmpAdaptor(); |
| 221 | |
| 222 | if (adaptor == null) { |
| 223 | log.error("sendTrap", "Cannot send trap: adaptor is null."); |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | if (!adaptor.isActive()) { |
| 228 | log.config("sendTrap", "Adaptor is not active: trap not sent."); |
| 229 | return; |
| 230 | } |
| 231 | |
| 232 | while(iterator.hasNext()) { |
| 233 | NotificationTarget target = null; |
| 234 | try { |
| 235 | target = (NotificationTarget) iterator.next(); |
| 236 | SnmpPeer peer = |
| 237 | new SnmpPeer(target.getAddress(), target.getPort()); |
| 238 | SnmpParameters p = new SnmpParameters(); |
| 239 | p.setRdCommunity(target.getCommunity()); |
| 240 | peer.setParams(p); |
| 241 | log.debug("handleNotification", "Sending trap to " + |
| 242 | target.getAddress() + ":" + target.getPort()); |
| 243 | adaptor.snmpV2Trap(peer, trap, list, null); |
| 244 | }catch(Exception e) { |
| 245 | log.error("sendTrap", |
| 246 | "Exception occured while sending trap to [" + |
| 247 | target + "]. Exception : " + e); |
| 248 | log.debug("sendTrap",e); |
| 249 | } |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Add a notification target. |
| 255 | * @param target The target to add |
| 256 | * @throws IllegalArgumentException If target parameter is null. |
| 257 | */ |
| 258 | public synchronized void addTarget(NotificationTarget target) |
| 259 | throws IllegalArgumentException { |
| 260 | if(target == null) |
| 261 | throw new IllegalArgumentException("Target is null"); |
| 262 | |
| 263 | notificationTargets.add(target); |
| 264 | } |
| 265 | |
| 266 | /** |
| 267 | * Remove notification listener. |
| 268 | */ |
| 269 | public void terminate() { |
| 270 | try { |
| 271 | emitter.removeNotificationListener(handler); |
| 272 | }catch(ListenerNotFoundException e) { |
| 273 | log.error("terminate", "Listener Not found : " + e); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Add notification targets. |
| 279 | * @param targets A list of |
| 280 | * <CODE>sun.management.snmp.jvminstr.NotificationTarget</CODE> |
| 281 | * @throws IllegalArgumentException If targets parameter is null. |
| 282 | */ |
| 283 | public synchronized void addTargets(List<NotificationTarget> targets) |
| 284 | throws IllegalArgumentException { |
| 285 | if(targets == null) |
| 286 | throw new IllegalArgumentException("Target list is null"); |
| 287 | |
| 288 | notificationTargets.addAll(targets); |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Factory method for "JvmMemory" group MBean. |
| 293 | * |
| 294 | * You can redefine this method if you need to replace the default |
| 295 | * generated MBean class with your own customized class. |
| 296 | * |
| 297 | * @param groupName Name of the group ("JvmMemory") |
| 298 | * @param groupOid OID of this group |
| 299 | * @param groupObjname ObjectName for this group (may be null) |
| 300 | * @param server MBeanServer for this group (may be null) |
| 301 | * |
| 302 | * @return An instance of the MBean class generated for the |
| 303 | * "JvmMemory" group (JvmMemory) |
| 304 | * |
| 305 | * Note that when using standard metadata, |
| 306 | * the returned object must implement the "JvmMemoryMBean" |
| 307 | * interface. |
| 308 | **/ |
| 309 | protected Object createJvmMemoryMBean(String groupName, |
| 310 | String groupOid, ObjectName groupObjname, |
| 311 | MBeanServer server) { |
| 312 | |
| 313 | // Note that when using standard metadata, |
| 314 | // the returned object must implement the "JvmMemoryMBean" |
| 315 | // interface. |
| 316 | // |
| 317 | if (server != null) |
| 318 | return new JvmMemoryImpl(this,server); |
| 319 | else |
| 320 | return new JvmMemoryImpl(this); |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | * Factory method for "JvmMemory" group metadata class. |
| 325 | * |
| 326 | * You can redefine this method if you need to replace the default |
| 327 | * generated metadata class with your own customized class. |
| 328 | * |
| 329 | * @param groupName Name of the group ("JvmMemory") |
| 330 | * @param groupOid OID of this group |
| 331 | * @param groupObjname ObjectName for this group (may be null) |
| 332 | * @param server MBeanServer for this group (may be null) |
| 333 | * |
| 334 | * @return An instance of the metadata class generated for the |
| 335 | * "JvmMemory" group (JvmMemoryMeta) |
| 336 | * |
| 337 | **/ |
| 338 | protected JvmMemoryMeta createJvmMemoryMetaNode(String groupName, |
| 339 | String groupOid, |
| 340 | ObjectName groupObjname, |
| 341 | MBeanServer server) { |
| 342 | return new JvmMemoryMetaImpl(this, objectserver); |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Factory method for "JvmThreading" group metadata class. |
| 347 | * |
| 348 | * You can redefine this method if you need to replace the default |
| 349 | * generated metadata class with your own customized class. |
| 350 | * |
| 351 | * @param groupName Name of the group ("JvmThreading") |
| 352 | * @param groupOid OID of this group |
| 353 | * @param groupObjname ObjectName for this group (may be null) |
| 354 | * @param server MBeanServer for this group (may be null) |
| 355 | * |
| 356 | * @return An instance of the metadata class generated for the |
| 357 | * "JvmThreading" group (JvmThreadingMeta) |
| 358 | * |
| 359 | **/ |
| 360 | protected JvmThreadingMeta createJvmThreadingMetaNode(String groupName, |
| 361 | String groupOid, |
| 362 | ObjectName groupObjname, |
| 363 | MBeanServer server) { |
| 364 | return new JvmThreadingMetaImpl(this, objectserver); |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * Factory method for "JvmThreading" group MBean. |
| 369 | * |
| 370 | * You can redefine this method if you need to replace the default |
| 371 | * generated MBean class with your own customized class. |
| 372 | * |
| 373 | * @param groupName Name of the group ("JvmThreading") |
| 374 | * @param groupOid OID of this group |
| 375 | * @param groupObjname ObjectName for this group (may be null) |
| 376 | * @param server MBeanServer for this group (may be null) |
| 377 | * |
| 378 | * @return An instance of the MBean class generated for the |
| 379 | * "JvmThreading" group (JvmThreading) |
| 380 | * |
| 381 | * Note that when using standard metadata, |
| 382 | * the returned object must implement the "JvmThreadingMBean" |
| 383 | * interface. |
| 384 | **/ |
| 385 | protected Object createJvmThreadingMBean(String groupName, |
| 386 | String groupOid, |
| 387 | ObjectName groupObjname, |
| 388 | MBeanServer server) { |
| 389 | |
| 390 | // Note that when using standard metadata, |
| 391 | // the returned object must implement the "JvmThreadingMBean" |
| 392 | // interface. |
| 393 | // |
| 394 | if (server != null) |
| 395 | return new JvmThreadingImpl(this,server); |
| 396 | else |
| 397 | return new JvmThreadingImpl(this); |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * Factory method for "JvmRuntime" group metadata class. |
| 402 | * |
| 403 | * You can redefine this method if you need to replace the default |
| 404 | * generated metadata class with your own customized class. |
| 405 | * |
| 406 | * @param groupName Name of the group ("JvmRuntime") |
| 407 | * @param groupOid OID of this group |
| 408 | * @param groupObjname ObjectName for this group (may be null) |
| 409 | * @param server MBeanServer for this group (may be null) |
| 410 | * |
| 411 | * @return An instance of the metadata class generated for the |
| 412 | * "JvmRuntime" group (JvmRuntimeMeta) |
| 413 | * |
| 414 | **/ |
| 415 | protected JvmRuntimeMeta createJvmRuntimeMetaNode(String groupName, |
| 416 | String groupOid, |
| 417 | ObjectName groupObjname, |
| 418 | MBeanServer server) { |
| 419 | return new JvmRuntimeMetaImpl(this, objectserver); |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * Factory method for "JvmRuntime" group MBean. |
| 424 | * |
| 425 | * You can redefine this method if you need to replace the default |
| 426 | * generated MBean class with your own customized class. |
| 427 | * |
| 428 | * @param groupName Name of the group ("JvmRuntime") |
| 429 | * @param groupOid OID of this group |
| 430 | * @param groupObjname ObjectName for this group (may be null) |
| 431 | * @param server MBeanServer for this group (may be null) |
| 432 | * |
| 433 | * @return An instance of the MBean class generated for the |
| 434 | * "JvmRuntime" group (JvmRuntime) |
| 435 | * |
| 436 | * Note that when using standard metadata, |
| 437 | * the returned object must implement the "JvmRuntimeMBean" |
| 438 | * interface. |
| 439 | **/ |
| 440 | protected Object createJvmRuntimeMBean(String groupName, |
| 441 | String groupOid, |
| 442 | ObjectName groupObjname, |
| 443 | MBeanServer server) { |
| 444 | |
| 445 | // Note that when using standard metadata, |
| 446 | // the returned object must implement the "JvmRuntimeMBean" |
| 447 | // interface. |
| 448 | // |
| 449 | if (server != null) |
| 450 | return new JvmRuntimeImpl(this,server); |
| 451 | else |
| 452 | return new JvmRuntimeImpl(this); |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Factory method for "JvmCompilation" group metadata class. |
| 457 | * |
| 458 | * You can redefine this method if you need to replace the default |
| 459 | * generated metadata class with your own customized class. |
| 460 | * |
| 461 | * @param groupName Name of the group ("JvmCompilation") |
| 462 | * @param groupOid OID of this group |
| 463 | * @param groupObjname ObjectName for this group (may be null) |
| 464 | * @param server MBeanServer for this group (may be null) |
| 465 | * |
| 466 | * @return An instance of the metadata class generated for the |
| 467 | * "JvmCompilation" group (JvmCompilationMeta) |
| 468 | * |
| 469 | **/ |
| 470 | protected JvmCompilationMeta |
| 471 | createJvmCompilationMetaNode(String groupName, |
| 472 | String groupOid, |
| 473 | ObjectName groupObjname, |
| 474 | MBeanServer server) { |
| 475 | // If there is no compilation system, the jvmCompilation will not |
| 476 | // be instantiated. |
| 477 | // |
| 478 | if (ManagementFactory.getCompilationMXBean() == null) return null; |
| 479 | return super.createJvmCompilationMetaNode(groupName,groupOid, |
| 480 | groupObjname,server); |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Factory method for "JvmCompilation" group MBean. |
| 485 | * |
| 486 | * You can redefine this method if you need to replace the default |
| 487 | * generated MBean class with your own customized class. |
| 488 | * |
| 489 | * @param groupName Name of the group ("JvmCompilation") |
| 490 | * @param groupOid OID of this group |
| 491 | * @param groupObjname ObjectName for this group (may be null) |
| 492 | * @param server MBeanServer for this group (may be null) |
| 493 | * |
| 494 | * @return An instance of the MBean class generated for the |
| 495 | * "JvmCompilation" group (JvmCompilation) |
| 496 | * |
| 497 | * Note that when using standard metadata, |
| 498 | * the returned object must implement the "JvmCompilationMBean" |
| 499 | * interface. |
| 500 | **/ |
| 501 | protected Object createJvmCompilationMBean(String groupName, |
| 502 | String groupOid, ObjectName groupObjname, MBeanServer server) { |
| 503 | |
| 504 | // Note that when using standard metadata, |
| 505 | // the returned object must implement the "JvmCompilationMBean" |
| 506 | // interface. |
| 507 | // |
| 508 | if (server != null) |
| 509 | return new JvmCompilationImpl(this,server); |
| 510 | else |
| 511 | return new JvmCompilationImpl(this); |
| 512 | } |
| 513 | |
| 514 | /** |
| 515 | * Factory method for "JvmOS" group MBean. |
| 516 | * |
| 517 | * You can redefine this method if you need to replace the default |
| 518 | * generated MBean class with your own customized class. |
| 519 | * |
| 520 | * @param groupName Name of the group ("JvmOS") |
| 521 | * @param groupOid OID of this group |
| 522 | * @param groupObjname ObjectName for this group (may be null) |
| 523 | * @param server MBeanServer for this group (may be null) |
| 524 | * |
| 525 | * @return An instance of the MBean class generated for the |
| 526 | * "JvmOS" group (JvmOS) |
| 527 | * |
| 528 | * Note that when using standard metadata, |
| 529 | * the returned object must implement the "JvmOSMBean" |
| 530 | * interface. |
| 531 | **/ |
| 532 | protected Object createJvmOSMBean(String groupName, |
| 533 | String groupOid, ObjectName groupObjname, MBeanServer server) { |
| 534 | |
| 535 | // Note that when using standard metadata, |
| 536 | // the returned object must implement the "JvmOSMBean" |
| 537 | // interface. |
| 538 | // |
| 539 | if (server != null) |
| 540 | return new JvmOSImpl(this,server); |
| 541 | else |
| 542 | return new JvmOSImpl(this); |
| 543 | } |
| 544 | |
| 545 | |
| 546 | /** |
| 547 | * Factory method for "JvmClassLoading" group MBean. |
| 548 | * |
| 549 | * You can redefine this method if you need to replace the default |
| 550 | * generated MBean class with your own customized class. |
| 551 | * |
| 552 | * @param groupName Name of the group ("JvmClassLoading") |
| 553 | * @param groupOid OID of this group |
| 554 | * @param groupObjname ObjectName for this group (may be null) |
| 555 | * @param server MBeanServer for this group (may be null) |
| 556 | * |
| 557 | * @return An instance of the MBean class generated for the |
| 558 | * "JvmClassLoading" group (JvmClassLoading) |
| 559 | * |
| 560 | * Note that when using standard metadata, |
| 561 | * the returned object must implement the "JvmClassLoadingMBean" |
| 562 | * interface. |
| 563 | **/ |
| 564 | protected Object createJvmClassLoadingMBean(String groupName, |
| 565 | String groupOid, |
| 566 | ObjectName groupObjname, |
| 567 | MBeanServer server) { |
| 568 | |
| 569 | // Note that when using standard metadata, |
| 570 | // the returned object must implement the "JvmClassLoadingMBean" |
| 571 | // interface. |
| 572 | // |
| 573 | if (server != null) |
| 574 | return new JvmClassLoadingImpl(this,server); |
| 575 | else |
| 576 | return new JvmClassLoadingImpl(this); |
| 577 | } |
| 578 | |
| 579 | static String validDisplayStringTC(String str) { |
| 580 | |
| 581 | if(str == null) return ""; |
| 582 | |
| 583 | if(str.length() > DISPLAY_STRING_MAX_LENGTH) { |
| 584 | return str.substring(0, DISPLAY_STRING_MAX_LENGTH); |
| 585 | } |
| 586 | else |
| 587 | return str; |
| 588 | } |
| 589 | |
| 590 | static String validJavaObjectNameTC(String str) { |
| 591 | |
| 592 | if(str == null) return ""; |
| 593 | |
| 594 | if(str.length() > JAVA_OBJECT_NAME_MAX_LENGTH) { |
| 595 | return str.substring(0, JAVA_OBJECT_NAME_MAX_LENGTH); |
| 596 | } |
| 597 | else |
| 598 | return str; |
| 599 | } |
| 600 | |
| 601 | static String validPathElementTC(String str) { |
| 602 | |
| 603 | if(str == null) return ""; |
| 604 | |
| 605 | if(str.length() > PATH_ELEMENT_MAX_LENGTH) { |
| 606 | return str.substring(0, PATH_ELEMENT_MAX_LENGTH); |
| 607 | } |
| 608 | else |
| 609 | return str; |
| 610 | } |
| 611 | static String validArgValueTC(String str) { |
| 612 | |
| 613 | if(str == null) return ""; |
| 614 | |
| 615 | if(str.length() > ARG_VALUE_MAX_LENGTH) { |
| 616 | return str.substring(0, ARG_VALUE_MAX_LENGTH); |
| 617 | } |
| 618 | else |
| 619 | return str; |
| 620 | } |
| 621 | |
| 622 | /** |
| 623 | * WARNING: This should probably be moved to JvmMemPoolTableMetaImpl |
| 624 | **/ |
| 625 | private SnmpTableHandler getJvmMemPoolTableHandler(Object userData) { |
| 626 | final SnmpMibTable meta = |
| 627 | getRegisteredTableMeta("JvmMemPoolTable"); |
| 628 | if (! (meta instanceof JvmMemPoolTableMetaImpl)) { |
| 629 | final String err = ((meta==null)?"No metadata for JvmMemPoolTable": |
| 630 | "Bad metadata class for JvmMemPoolTable: " + |
| 631 | meta.getClass().getName()); |
| 632 | log.error("getJvmMemPoolTableHandler", err); |
| 633 | return null; |
| 634 | } |
| 635 | final JvmMemPoolTableMetaImpl memPoolTable = |
| 636 | (JvmMemPoolTableMetaImpl) meta; |
| 637 | return memPoolTable.getHandler(userData); |
| 638 | } |
| 639 | |
| 640 | /** |
| 641 | * WARNING: This should probably be moved to JvmMemPoolTableMetaImpl |
| 642 | **/ |
| 643 | private int findInCache(SnmpTableHandler handler, |
| 644 | String poolName) { |
| 645 | |
| 646 | if (!(handler instanceof SnmpCachedData)) { |
| 647 | if (handler != null) { |
| 648 | final String err = "Bad class for JvmMemPoolTable datas: " + |
| 649 | handler.getClass().getName(); |
| 650 | log.error("getJvmMemPoolEntry", err); |
| 651 | } |
| 652 | return -1; |
| 653 | } |
| 654 | |
| 655 | final SnmpCachedData data = (SnmpCachedData)handler; |
| 656 | final int len = data.datas.length; |
| 657 | for (int i=0; i < data.datas.length ; i++) { |
| 658 | final MemoryPoolMXBean pool = (MemoryPoolMXBean) data.datas[i]; |
| 659 | if (poolName.equals(pool.getName())) return i; |
| 660 | } |
| 661 | return -1; |
| 662 | } |
| 663 | |
| 664 | /** |
| 665 | * WARNING: This should probably be moved to JvmMemPoolTableMetaImpl |
| 666 | **/ |
| 667 | private SnmpOid getJvmMemPoolEntryIndex(SnmpTableHandler handler, |
| 668 | String poolName) { |
| 669 | final int index = findInCache(handler,poolName); |
| 670 | if (index < 0) return null; |
| 671 | return ((SnmpCachedData)handler).indexes[index]; |
| 672 | } |
| 673 | |
| 674 | private SnmpOid getJvmMemPoolEntryIndex(String poolName) { |
| 675 | return getJvmMemPoolEntryIndex(getJvmMemPoolTableHandler(null), |
| 676 | poolName); |
| 677 | } |
| 678 | |
| 679 | // cache validity |
| 680 | // |
| 681 | // Should we define a property for this? Should we have different |
| 682 | // cache validity periods depending on which table we cache? |
| 683 | // |
| 684 | public long validity() { |
| 685 | return DEFAULT_CACHE_VALIDITY_PERIOD; |
| 686 | } |
| 687 | |
| 688 | // Defined in RFC 2579 |
| 689 | private final static int DISPLAY_STRING_MAX_LENGTH=255; |
| 690 | private final static int JAVA_OBJECT_NAME_MAX_LENGTH=1023; |
| 691 | private final static int PATH_ELEMENT_MAX_LENGTH=1023; |
| 692 | private final static int ARG_VALUE_MAX_LENGTH=1023; |
| 693 | private final static int DEFAULT_CACHE_VALIDITY_PERIOD=1000; |
| 694 | } |