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| 1 | +/* | |
| 2 | + * Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.management; | |
| 27 | +import java.lang.management.MemoryUsage; | |
| 28 | +import java.lang.management.MemoryNotificationInfo; | |
| 29 | +import java.lang.management.MonitorInfo; | |
| 30 | +import java.lang.management.LockInfo; | |
| 31 | +import java.lang.management.ThreadInfo; | |
| 32 | +import java.lang.reflect.*; | |
| 33 | +import java.util.List; | |
| 34 | +import java.util.Map; | |
| 35 | +import java.util.*; | |
| 36 | +import java.io.InvalidObjectException; | |
| 37 | +import java.security.AccessController; | |
| 38 | +import java.security.PrivilegedAction; | |
| 39 | +import java.security.PrivilegedActionException; | |
| 40 | +import java.security.PrivilegedExceptionAction; | |
| 41 | +import javax.management.*; | |
| 42 | +import javax.management.openmbean.*; | |
| 43 | +import static javax.management.openmbean.SimpleType.*; | |
| 44 | +import com.sun.management.VMOption; | |
| 45 | + | |
| 46 | +/** | |
| 47 | + * A mapped mxbean type maps a Java type to an open type. | |
| 48 | + * Only the following Java types are mappable | |
| 49 | + * (currently required by the platform MXBeans): | |
| 50 | + * 1. Primitive types | |
| 51 | + * 2. Wrapper classes such java.lang.Integer, etc | |
| 52 | + * 3. Classes with only getter methods and with a static "from" method | |
| 53 | + * that takes a CompositeData argument. | |
| 54 | + * 4. E[] where E is a type of 1-4 (can be multi-dimensional array) | |
| 55 | + * 5. List<E> where E is a type of 1-3 | |
| 56 | + * 6. Map<K, V> where K and V are a type of 1-4 | |
| 57 | + * | |
| 58 | + * OpenDataException will be thrown if a Java type is not supported. | |
| 59 | + */ | |
| 60 | +// Suppress unchecked cast warnings at line 442, 523 and 546 | |
| 61 | +// Suppress unchecked calls at line 235, 284, 380 and 430. | |
| 62 | +@SuppressWarnings("unchecked") | |
| 63 | +public abstract class MappedMXBeanType { | |
| 64 | + private static final WeakHashMap<Type,MappedMXBeanType> convertedTypes = | |
| 65 | + new WeakHashMap<Type,MappedMXBeanType>(); | |
| 66 | + | |
| 67 | + boolean isBasicType = false; | |
| 68 | + OpenType openType = inProgress; | |
| 69 | + Class mappedTypeClass; | |
| 70 | + | |
| 71 | + static synchronized MappedMXBeanType newMappedType(Type javaType) | |
| 72 | + throws OpenDataException { | |
| 73 | + | |
| 74 | + MappedMXBeanType mt = null; | |
| 75 | + if (javaType instanceof Class) { | |
| 76 | + final Class c = (Class) javaType; | |
| 77 | + if (c.isEnum()) { | |
| 78 | + mt = new EnumMXBeanType(c); | |
| 79 | + } else if (c.isArray()) { | |
| 80 | + mt = new ArrayMXBeanType(c); | |
| 81 | + } else { | |
| 82 | + mt = new CompositeDataMXBeanType(c); | |
| 83 | + } | |
| 84 | + } else if (javaType instanceof ParameterizedType) { | |
| 85 | + final ParameterizedType pt = (ParameterizedType) javaType; | |
| 86 | + final Type rawType = pt.getRawType(); | |
| 87 | + if (rawType instanceof Class) { | |
| 88 | + final Class rc = (Class) rawType; | |
| 89 | + if (rc == List.class) { | |
| 90 | + mt = new ListMXBeanType(pt); | |
| 91 | + } else if (rc == Map.class) { | |
| 92 | + mt = new MapMXBeanType(pt); | |
| 93 | + } | |
| 94 | + } | |
| 95 | + } else if (javaType instanceof GenericArrayType) { | |
| 96 | + final GenericArrayType t = (GenericArrayType) javaType; | |
| 97 | + mt = new GenericArrayMXBeanType(t); | |
| 98 | + } | |
| 99 | + // No open type mapped for the javaType | |
| 100 | + if (mt == null) { | |
| 101 | + throw new OpenDataException(javaType + | |
| 102 | + " is not a supported MXBean type."); | |
| 103 | + } | |
| 104 | + convertedTypes.put(javaType, mt); | |
| 105 | + return mt; | |
| 106 | + } | |
| 107 | + | |
| 108 | + // basic types do not require data mapping | |
| 109 | + static synchronized MappedMXBeanType newBasicType(Class c, OpenType ot) | |
| 110 | + throws OpenDataException { | |
| 111 | + MappedMXBeanType mt = new BasicMXBeanType(c, ot); | |
| 112 | + convertedTypes.put(c, mt); | |
| 113 | + return mt; | |
| 114 | + } | |
| 115 | + | |
| 116 | + static synchronized MappedMXBeanType getMappedType(Type t) | |
| 117 | + throws OpenDataException { | |
| 118 | + MappedMXBeanType mt = convertedTypes.get(t); | |
| 119 | + if (mt == null) { | |
| 120 | + mt = newMappedType(t); | |
| 121 | + } | |
| 122 | + | |
| 123 | + if (mt.getOpenType() instanceof InProgress) { | |
| 124 | + throw new OpenDataException("Recursive data structure"); | |
| 125 | + } | |
| 126 | + return mt; | |
| 127 | + } | |
| 128 | + | |
| 129 | + // Convert a class to an OpenType | |
| 130 | + public static synchronized OpenType toOpenType(Type t) | |
| 131 | + throws OpenDataException { | |
| 132 | + MappedMXBeanType mt = getMappedType(t); | |
| 133 | + return mt.getOpenType(); | |
| 134 | + } | |
| 135 | + | |
| 136 | + public static Object toJavaTypeData(Object openData, Type t) | |
| 137 | + throws OpenDataException, InvalidObjectException { | |
| 138 | + if (openData == null) { | |
| 139 | + return null; | |
| 140 | + } | |
| 141 | + MappedMXBeanType mt = getMappedType(t); | |
| 142 | + return mt.toJavaTypeData(openData); | |
| 143 | + } | |
| 144 | + | |
| 145 | + public static Object toOpenTypeData(Object data, Type t) | |
| 146 | + throws OpenDataException { | |
| 147 | + if (data == null) { | |
| 148 | + return null; | |
| 149 | + } | |
| 150 | + MappedMXBeanType mt = getMappedType(t); | |
| 151 | + return mt.toOpenTypeData(data); | |
| 152 | + } | |
| 153 | + | |
| 154 | + // Return the mapped open type | |
| 155 | + OpenType getOpenType() { | |
| 156 | + return openType; | |
| 157 | + } | |
| 158 | + | |
| 159 | + boolean isBasicType() { | |
| 160 | + return isBasicType; | |
| 161 | + } | |
| 162 | + | |
| 163 | + // Return the type name of the mapped open type | |
| 164 | + // For primitive types, the type name is the same as the javaType | |
| 165 | + // but the mapped open type is the wrapper class | |
| 166 | + String getTypeName() { | |
| 167 | + return getMappedTypeClass().getName(); | |
| 168 | + } | |
| 169 | + | |
| 170 | + // Return the mapped open type | |
| 171 | + Class getMappedTypeClass() { | |
| 172 | + return mappedTypeClass; | |
| 173 | + } | |
| 174 | + | |
| 175 | + abstract Type getJavaType(); | |
| 176 | + | |
| 177 | + // return name of the class or the generic type | |
| 178 | + abstract String getName(); | |
| 179 | + | |
| 180 | + abstract Object toOpenTypeData(Object javaTypeData) | |
| 181 | + throws OpenDataException; | |
| 182 | + | |
| 183 | + abstract Object toJavaTypeData(Object openTypeData) | |
| 184 | + throws OpenDataException, InvalidObjectException; | |
| 185 | + | |
| 186 | + // Basic Types - Classes that do not require data conversion | |
| 187 | + // including primitive types and all SimpleType | |
| 188 | + // | |
| 189 | + // Mapped open type: SimpleType for corresponding basic type | |
| 190 | + // | |
| 191 | + // Data Mapping: | |
| 192 | + // T <-> T (no conversion) | |
| 193 | + // | |
| 194 | + static class BasicMXBeanType extends MappedMXBeanType { | |
| 195 | + final Class basicType; | |
| 196 | + BasicMXBeanType(Class c, OpenType openType) { | |
| 197 | + this.basicType = c; | |
| 198 | + this.openType = openType; | |
| 199 | + this.mappedTypeClass = c; | |
| 200 | + this.isBasicType = true; | |
| 201 | + } | |
| 202 | + | |
| 203 | + Type getJavaType() { | |
| 204 | + return basicType; | |
| 205 | + } | |
| 206 | + | |
| 207 | + String getName() { | |
| 208 | + return basicType.getName(); | |
| 209 | + } | |
| 210 | + | |
| 211 | + Object toOpenTypeData(Object data) throws OpenDataException { | |
| 212 | + return data; | |
| 213 | + } | |
| 214 | + | |
| 215 | + Object toJavaTypeData(Object data) | |
| 216 | + throws OpenDataException, InvalidObjectException { | |
| 217 | + | |
| 218 | + return data; | |
| 219 | + } | |
| 220 | + } | |
| 221 | + | |
| 222 | + | |
| 223 | + // Enum subclasses | |
| 224 | + // Mapped open type - String | |
| 225 | + // | |
| 226 | + // Data Mapping: | |
| 227 | + // Enum <-> enum's name | |
| 228 | + // | |
| 229 | + static class EnumMXBeanType extends MappedMXBeanType { | |
| 230 | + final Class enumClass; | |
| 231 | + EnumMXBeanType(Class c) { | |
| 232 | + this.enumClass = c; | |
| 233 | + this.openType = STRING; | |
| 234 | + this.mappedTypeClass = String.class; | |
| 235 | + } | |
| 236 | + | |
| 237 | + Type getJavaType() { | |
| 238 | + return enumClass; | |
| 239 | + } | |
| 240 | + | |
| 241 | + String getName() { | |
| 242 | + return enumClass.getName(); | |
| 243 | + } | |
| 244 | + | |
| 245 | + Object toOpenTypeData(Object data) throws OpenDataException { | |
| 246 | + return ((Enum) data).name(); | |
| 247 | + } | |
| 248 | + | |
| 249 | + Object toJavaTypeData(Object data) | |
| 250 | + throws OpenDataException, InvalidObjectException { | |
| 251 | + | |
| 252 | + try { | |
| 253 | + return Enum.valueOf(enumClass, (String) data); | |
| 254 | + } catch (IllegalArgumentException e) { | |
| 255 | + // missing enum constants | |
| 256 | + final InvalidObjectException ioe = | |
| 257 | + new InvalidObjectException("Enum constant named " + | |
| 258 | + (String) data + " is missing"); | |
| 259 | + ioe.initCause(e); | |
| 260 | + throw ioe; | |
| 261 | + } | |
| 262 | + } | |
| 263 | + } | |
| 264 | + | |
| 265 | + // Array E[] | |
| 266 | + // Mapped open type - Array with element of OpenType for E | |
| 267 | + // | |
| 268 | + // Data Mapping: | |
| 269 | + // E[] <-> openTypeData(E)[] | |
| 270 | + // | |
| 271 | + static class ArrayMXBeanType extends MappedMXBeanType { | |
| 272 | + final Class arrayClass; | |
| 273 | + protected MappedMXBeanType componentType; | |
| 274 | + protected MappedMXBeanType baseElementType; | |
| 275 | + | |
| 276 | + ArrayMXBeanType(Class c) throws OpenDataException { | |
| 277 | + this.arrayClass = c; | |
| 278 | + this.componentType = getMappedType(c.getComponentType()); | |
| 279 | + | |
| 280 | + StringBuilder className = new StringBuilder(); | |
| 281 | + Class et = c; | |
| 282 | + int dim; | |
| 283 | + for (dim = 0; et.isArray(); dim++) { | |
| 284 | + className.append('['); | |
| 285 | + et = et.getComponentType(); | |
| 286 | + } | |
| 287 | + baseElementType = getMappedType(et); | |
| 288 | + if (et.isPrimitive()) { | |
| 289 | + className = new StringBuilder(c.getName()); | |
| 290 | + } else { | |
| 291 | + className.append("L" + baseElementType.getTypeName() + ";"); | |
| 292 | + } | |
| 293 | + try { | |
| 294 | + mappedTypeClass = Class.forName(className.toString()); | |
| 295 | + } catch (ClassNotFoundException e) { | |
| 296 | + final OpenDataException ode = | |
| 297 | + new OpenDataException("Cannot obtain array class"); | |
| 298 | + ode.initCause(e); | |
| 299 | + throw ode; | |
| 300 | + } | |
| 301 | + | |
| 302 | + openType = new ArrayType(dim, baseElementType.getOpenType()); | |
| 303 | + } | |
| 304 | + | |
| 305 | + protected ArrayMXBeanType() { | |
| 306 | + arrayClass = null; | |
| 307 | + }; | |
| 308 | + | |
| 309 | + Type getJavaType() { | |
| 310 | + return arrayClass; | |
| 311 | + } | |
| 312 | + | |
| 313 | + String getName() { | |
| 314 | + return arrayClass.getName(); | |
| 315 | + } | |
| 316 | + | |
| 317 | + Object toOpenTypeData(Object data) throws OpenDataException { | |
| 318 | + // If the base element type is a basic type | |
| 319 | + // return the data as no conversion is needed. | |
| 320 | + // Primitive types are not converted to wrappers. | |
| 321 | + if (baseElementType.isBasicType()) { | |
| 322 | + return data; | |
| 323 | + } | |
| 324 | + | |
| 325 | + final Object[] array = (Object[]) data; | |
| 326 | + final Object[] openArray = (Object[]) | |
| 327 | + Array.newInstance(componentType.getMappedTypeClass(), | |
| 328 | + array.length); | |
| 329 | + int i = 0; | |
| 330 | + for (Object o : array) { | |
| 331 | + if (o == null) { | |
| 332 | + openArray[i] = null; | |
| 333 | + } else { | |
| 334 | + openArray[i] = componentType.toOpenTypeData(o); | |
| 335 | + } | |
| 336 | + i++; | |
| 337 | + } | |
| 338 | + return openArray; | |
| 339 | + } | |
| 340 | + | |
| 341 | + | |
| 342 | + Object toJavaTypeData(Object data) | |
| 343 | + throws OpenDataException, InvalidObjectException { | |
| 344 | + | |
| 345 | + // If the base element type is a basic type | |
| 346 | + // return the data as no conversion is needed. | |
| 347 | + if (baseElementType.isBasicType()) { | |
| 348 | + return data; | |
| 349 | + } | |
| 350 | + | |
| 351 | + final Object[] openArray = (Object[]) data; | |
| 352 | + final Object[] array = (Object[]) | |
| 353 | + Array.newInstance((Class) componentType.getJavaType(), | |
| 354 | + openArray.length); | |
| 355 | + int i = 0; | |
| 356 | + for (Object o : openArray) { | |
| 357 | + if (o == null) { | |
| 358 | + array[i] = null; | |
| 359 | + } else { | |
| 360 | + array[i] = componentType.toJavaTypeData(o); | |
| 361 | + } | |
| 362 | + i++; | |
| 363 | + } | |
| 364 | + return array; | |
| 365 | + } | |
| 366 | + | |
| 367 | + } | |
| 368 | + | |
| 369 | + static class GenericArrayMXBeanType extends ArrayMXBeanType { | |
| 370 | + final GenericArrayType gtype; | |
| 371 | + GenericArrayMXBeanType(GenericArrayType gat) throws OpenDataException { | |
| 372 | + this.gtype = gat; | |
| 373 | + this.componentType = getMappedType(gat.getGenericComponentType()); | |
| 374 | + | |
| 375 | + StringBuilder className = new StringBuilder(); | |
| 376 | + Type elementType = gat; | |
| 377 | + int dim; | |
| 378 | + for (dim = 0; elementType instanceof GenericArrayType; dim++) { | |
| 379 | + className.append('['); | |
| 380 | + GenericArrayType et = (GenericArrayType) elementType; | |
| 381 | + elementType = et.getGenericComponentType(); | |
| 382 | + } | |
| 383 | + baseElementType = getMappedType(elementType); | |
| 384 | + if (elementType instanceof Class && ((Class) elementType).isPrimitive()) { | |
| 385 | + className = new StringBuilder(gat.toString()); | |
| 386 | + } else { | |
| 387 | + className.append("L" + baseElementType.getTypeName() + ";"); | |
| 388 | + } | |
| 389 | + try { | |
| 390 | + mappedTypeClass = Class.forName(className.toString()); | |
| 391 | + } catch (ClassNotFoundException e) { | |
| 392 | + final OpenDataException ode = | |
| 393 | + new OpenDataException("Cannot obtain array class"); | |
| 394 | + ode.initCause(e); | |
| 395 | + throw ode; | |
| 396 | + } | |
| 397 | + | |
| 398 | + openType = new ArrayType(dim, baseElementType.getOpenType()); | |
| 399 | + } | |
| 400 | + | |
| 401 | + Type getJavaType() { | |
| 402 | + return gtype; | |
| 403 | + } | |
| 404 | + | |
| 405 | + String getName() { | |
| 406 | + return gtype.toString(); | |
| 407 | + } | |
| 408 | + } | |
| 409 | + | |
| 410 | + // List<E> | |
| 411 | + // Mapped open type - Array with element of OpenType for E | |
| 412 | + // | |
| 413 | + // Data Mapping: | |
| 414 | + // List<E> <-> openTypeData(E)[] | |
| 415 | + // | |
| 416 | + static class ListMXBeanType extends MappedMXBeanType { | |
| 417 | + final ParameterizedType javaType; | |
| 418 | + final MappedMXBeanType paramType; | |
| 419 | + final String typeName; | |
| 420 | + | |
| 421 | + ListMXBeanType(ParameterizedType pt) throws OpenDataException { | |
| 422 | + this.javaType = pt; | |
| 423 | + | |
| 424 | + final Type[] argTypes = pt.getActualTypeArguments(); | |
| 425 | + assert(argTypes.length == 1); | |
| 426 | + | |
| 427 | + if (!(argTypes[0] instanceof Class)) { | |
| 428 | + throw new OpenDataException("Element Type for " + pt + | |
| 429 | + " not supported"); | |
| 430 | + } | |
| 431 | + final Class et = (Class) argTypes[0]; | |
| 432 | + if (et.isArray()) { | |
| 433 | + throw new OpenDataException("Element Type for " + pt + | |
| 434 | + " not supported"); | |
| 435 | + } | |
| 436 | + paramType = getMappedType(et); | |
| 437 | + typeName = "List<" + paramType.getName() + ">"; | |
| 438 | + | |
| 439 | + try { | |
| 440 | + mappedTypeClass = Class.forName( | |
| 441 | + "[L" + paramType.getTypeName() + ";"); | |
| 442 | + } catch (ClassNotFoundException e) { | |
| 443 | + final OpenDataException ode = | |
| 444 | + new OpenDataException("Array class not found"); | |
| 445 | + ode.initCause(e); | |
| 446 | + throw ode; | |
| 447 | + } | |
| 448 | + openType = new ArrayType(1, paramType.getOpenType()); | |
| 449 | + } | |
| 450 | + | |
| 451 | + Type getJavaType() { | |
| 452 | + return javaType; | |
| 453 | + } | |
| 454 | + | |
| 455 | + String getName() { | |
| 456 | + return typeName; | |
| 457 | + } | |
| 458 | + | |
| 459 | + Object toOpenTypeData(Object data) throws OpenDataException { | |
| 460 | + final List<Object> list = (List<Object>) data; | |
| 461 | + | |
| 462 | + final Object[] openArray = (Object[]) | |
| 463 | + Array.newInstance(paramType.getMappedTypeClass(), | |
| 464 | + list.size()); | |
| 465 | + int i = 0; | |
| 466 | + for (Object o : list) { | |
| 467 | + openArray[i++] = paramType.toOpenTypeData(o); | |
| 468 | + } | |
| 469 | + return openArray; | |
| 470 | + } | |
| 471 | + | |
| 472 | + Object toJavaTypeData(Object data) | |
| 473 | + throws OpenDataException, InvalidObjectException { | |
| 474 | + | |
| 475 | + final Object[] openArray = (Object[]) data; | |
| 476 | + List<Object> result = new ArrayList<Object>(openArray.length); | |
| 477 | + for (Object o : openArray) { | |
| 478 | + result.add(paramType.toJavaTypeData(o)); | |
| 479 | + } | |
| 480 | + return result; | |
| 481 | + } | |
| 482 | + } | |
| 483 | + | |
| 484 | + private static final String KEY = "key"; | |
| 485 | + private static final String VALUE = "value"; | |
| 486 | + private static final String[] mapIndexNames = {KEY}; | |
| 487 | + private static final String[] mapItemNames = {KEY, VALUE}; | |
| 488 | + | |
| 489 | + // Map<K,V> | |
| 490 | + // Mapped open type - TabularType with row type: | |
| 491 | + // CompositeType: | |
| 492 | + // "key" of openDataType(K) | |
| 493 | + // "value" of openDataType(V) | |
| 494 | + // "key" is the index name | |
| 495 | + // | |
| 496 | + // Data Mapping: | |
| 497 | + // Map<K,V> <-> TabularData | |
| 498 | + // | |
| 499 | + static class MapMXBeanType extends MappedMXBeanType { | |
| 500 | + final ParameterizedType javaType; | |
| 501 | + final MappedMXBeanType keyType; | |
| 502 | + final MappedMXBeanType valueType; | |
| 503 | + final String typeName; | |
| 504 | + | |
| 505 | + MapMXBeanType(ParameterizedType pt) throws OpenDataException { | |
| 506 | + this.javaType = pt; | |
| 507 | + | |
| 508 | + final Type[] argTypes = pt.getActualTypeArguments(); | |
| 509 | + assert(argTypes.length == 2); | |
| 510 | + this.keyType = getMappedType(argTypes[0]); | |
| 511 | + this.valueType = getMappedType(argTypes[1]); | |
| 512 | + | |
| 513 | + | |
| 514 | + // FIXME: generate typeName for generic | |
| 515 | + typeName = "Map<" + keyType.getName() + "," + | |
| 516 | + valueType.getName() + ">"; | |
| 517 | + final OpenType[] mapItemTypes = new OpenType[] { | |
| 518 | + keyType.getOpenType(), | |
| 519 | + valueType.getOpenType(), | |
| 520 | + }; | |
| 521 | + final CompositeType rowType = | |
| 522 | + new CompositeType(typeName, | |
| 523 | + typeName, | |
| 524 | + mapItemNames, | |
| 525 | + mapItemNames, | |
| 526 | + mapItemTypes); | |
| 527 | + | |
| 528 | + openType = new TabularType(typeName, typeName, rowType, mapIndexNames); | |
| 529 | + mappedTypeClass = javax.management.openmbean.TabularData.class; | |
| 530 | + } | |
| 531 | + | |
| 532 | + Type getJavaType() { | |
| 533 | + return javaType; | |
| 534 | + } | |
| 535 | + | |
| 536 | + String getName() { | |
| 537 | + return typeName; | |
| 538 | + } | |
| 539 | + | |
| 540 | + Object toOpenTypeData(Object data) throws OpenDataException { | |
| 541 | + final Map<Object,Object> map = (Map<Object,Object>) data; | |
| 542 | + final TabularType tabularType = (TabularType) openType; | |
| 543 | + final TabularData table = new TabularDataSupport(tabularType); | |
| 544 | + final CompositeType rowType = tabularType.getRowType(); | |
| 545 | + | |
| 546 | + for (Map.Entry entry : map.entrySet()) { | |
| 547 | + final Object key = keyType.toOpenTypeData(entry.getKey()); | |
| 548 | + final Object value = valueType.toOpenTypeData(entry.getValue()); | |
| 549 | + final CompositeData row = | |
| 550 | + new CompositeDataSupport(rowType, | |
| 551 | + mapItemNames, | |
| 552 | + new Object[] {key, value}); | |
| 553 | + table.put(row); | |
| 554 | + } | |
| 555 | + return table; | |
| 556 | + } | |
| 557 | + | |
| 558 | + Object toJavaTypeData(Object data) | |
| 559 | + throws OpenDataException, InvalidObjectException { | |
| 560 | + | |
| 561 | + final TabularData td = (TabularData) data; | |
| 562 | + | |
| 563 | + Map<Object, Object> result = new HashMap<Object, Object>(); | |
| 564 | + for (CompositeData row : (Collection<CompositeData>) td.values()) { | |
| 565 | + Object key = keyType.toJavaTypeData(row.get(KEY)); | |
| 566 | + Object value = valueType.toJavaTypeData(row.get(VALUE)); | |
| 567 | + result.put(key, value); | |
| 568 | + } | |
| 569 | + return result; | |
| 570 | + } | |
| 571 | + } | |
| 572 | + | |
| 573 | + private static final Class<?> COMPOSITE_DATA_CLASS = | |
| 574 | + javax.management.openmbean.CompositeData.class; | |
| 575 | + | |
| 576 | + // Classes that have a static from method | |
| 577 | + // Mapped open type - CompositeData | |
| 578 | + // | |
| 579 | + // Data Mapping: | |
| 580 | + // Classes <-> CompositeData | |
| 581 | + // | |
| 582 | + // The name and type of items for a class are identified from | |
| 583 | + // the getter methods. For example, a class defines a method: | |
| 584 | + // | |
| 585 | + // public FooType getFoo(); | |
| 586 | + // | |
| 587 | + // The composite data view for this class will contain one | |
| 588 | + // item entry for a "foo" attribute and the item type is | |
| 589 | + // one of the open types defined in the OpenType class that | |
| 590 | + // can be determined in the following manner: | |
| 591 | + // o If FooType is a primitive type, the item type a wrapper | |
| 592 | + // class for the corresponding primitive type (such as | |
| 593 | + // Integer, Long, Boolean, etc). | |
| 594 | + // o If FooType is of type CompositeData or TabularData, | |
| 595 | + // the item type is FooType. | |
| 596 | + // o If FooType is an Enum, the item type is a String and | |
| 597 | + // the value is the name of the enum constant. | |
| 598 | + // o If FooType is a class or an interface other than the above, | |
| 599 | + // the item type is CompositeData. The same convention | |
| 600 | + // can be recursively applied to the FooType class when | |
| 601 | + // constructing the composite data for the "foo" attribute. | |
| 602 | + // o If FooType is an array, the item type is an array and | |
| 603 | + // its element type is determined as described above. | |
| 604 | + // | |
| 605 | + static class CompositeDataMXBeanType extends MappedMXBeanType { | |
| 606 | + final Class<?> javaClass; | |
| 607 | + final boolean isCompositeData; | |
| 608 | + Method fromMethod = null; | |
| 609 | + | |
| 610 | + CompositeDataMXBeanType(Class c) throws OpenDataException { | |
| 611 | + this.javaClass = c; | |
| 612 | + this.mappedTypeClass = COMPOSITE_DATA_CLASS; | |
| 613 | + | |
| 614 | + // check if a static from method exists | |
| 615 | + try { | |
| 616 | + fromMethod = AccessController.doPrivileged(new PrivilegedExceptionAction<Method>() { | |
| 617 | + public Method run() throws NoSuchMethodException { | |
| 618 | + return javaClass.getMethod("from", COMPOSITE_DATA_CLASS); | |
| 619 | + } | |
| 620 | + }); | |
| 621 | + } catch (PrivilegedActionException e) { | |
| 622 | + // ignore NoSuchMethodException since we allow classes | |
| 623 | + // that has no from method to be embeded in another class. | |
| 624 | + } | |
| 625 | + | |
| 626 | + if (COMPOSITE_DATA_CLASS.isAssignableFrom(c)) { | |
| 627 | + // c implements CompositeData - set openType to null | |
| 628 | + // defer generating the CompositeType | |
| 629 | + // until the object is constructed | |
| 630 | + this.isCompositeData = true; | |
| 631 | + this.openType = null; | |
| 632 | + } else { | |
| 633 | + this.isCompositeData = false; | |
| 634 | + | |
| 635 | + // Make a CompositeData containing all the getters | |
| 636 | + final Method[] methods = | |
| 637 | + AccessController.doPrivileged(new PrivilegedAction<Method[]>() { | |
| 638 | + public Method[] run() { | |
| 639 | + return javaClass.getMethods(); | |
| 640 | + } | |
| 641 | + }); | |
| 642 | + final List<String> names = new ArrayList<String>(); | |
| 643 | + final List<OpenType> types = new ArrayList<OpenType>(); | |
| 644 | + | |
| 645 | + /* Select public methods that look like "T getX()" or "boolean | |
| 646 | + isX()", where T is not void and X is not the empty | |
| 647 | + string. Exclude "Class getClass()" inherited from Object. */ | |
| 648 | + for (int i = 0; i < methods.length; i++) { | |
| 649 | + final Method method = methods[i]; | |
| 650 | + final String name = method.getName(); | |
| 651 | + final Type type = method.getGenericReturnType(); | |
| 652 | + final String rest; | |
| 653 | + if (name.startsWith("get")) { | |
| 654 | + rest = name.substring(3); | |
| 655 | + } else if (name.startsWith("is") && | |
| 656 | + type instanceof Class && | |
| 657 | + ((Class) type) == boolean.class) { | |
| 658 | + rest = name.substring(2); | |
| 659 | + } else { | |
| 660 | + // ignore non-getter methods | |
| 661 | + continue; | |
| 662 | + } | |
| 663 | + | |
| 664 | + if (rest.equals("") || | |
| 665 | + method.getParameterTypes().length > 0 || | |
| 666 | + type == void.class || | |
| 667 | + rest.equals("Class")) { | |
| 668 | + | |
| 669 | + // ignore non-getter methods | |
| 670 | + continue; | |
| 671 | + } | |
| 672 | + names.add(decapitalize(rest)); | |
| 673 | + types.add(toOpenType(type)); | |
| 674 | + } | |
| 675 | + | |
| 676 | + final String[] nameArray = names.toArray(new String[0]); | |
| 677 | + openType = new CompositeType(c.getName(), | |
| 678 | + c.getName(), | |
| 679 | + nameArray, // field names | |
| 680 | + nameArray, // field descriptions | |
| 681 | + types.toArray(new OpenType[0])); | |
| 682 | + } | |
| 683 | + } | |
| 684 | + | |
| 685 | + Type getJavaType() { | |
| 686 | + return javaClass; | |
| 687 | + } | |
| 688 | + | |
| 689 | + String getName() { | |
| 690 | + return javaClass.getName(); | |
| 691 | + } | |
| 692 | + | |
| 693 | + Object toOpenTypeData(Object data) throws OpenDataException { | |
| 694 | + if (data instanceof MemoryUsage) { | |
| 695 | + return MemoryUsageCompositeData.toCompositeData((MemoryUsage) data); | |
| 696 | + } | |
| 697 | + | |
| 698 | + if (data instanceof ThreadInfo) { | |
| 699 | + return ThreadInfoCompositeData.toCompositeData((ThreadInfo) data); | |
| 700 | + } | |
| 701 | + | |
| 702 | + if (data instanceof LockInfo) { | |
| 703 | + if (data instanceof java.lang.management.MonitorInfo) { | |
| 704 | + return MonitorInfoCompositeData.toCompositeData((MonitorInfo) data); | |
| 705 | + } | |
| 706 | + return LockDataConverter.toLockInfoCompositeData((LockInfo) data); | |
| 707 | + } | |
| 708 | + | |
| 709 | + if (data instanceof MemoryNotificationInfo) { | |
| 710 | + return MemoryNotifInfoCompositeData. | |
| 711 | + toCompositeData((MemoryNotificationInfo) data); | |
| 712 | + } | |
| 713 | + | |
| 714 | + if (data instanceof VMOption) { | |
| 715 | + return VMOptionCompositeData.toCompositeData((VMOption) data); | |
| 716 | + } | |
| 717 | + | |
| 718 | + if (isCompositeData) { | |
| 719 | + // Classes that implement CompositeData | |
| 720 | + // | |
| 721 | + // construct a new CompositeDataSupport object | |
| 722 | + // so that no other classes are sent over the wire | |
| 723 | + CompositeData cd = (CompositeData) data; | |
| 724 | + CompositeType ct = cd.getCompositeType(); | |
| 725 | + String[] itemNames = (String[]) ct.keySet().toArray(new String[0]); | |
| 726 | + Object[] itemValues = cd.getAll(itemNames); | |
| 727 | + return new CompositeDataSupport(ct, itemNames, itemValues); | |
| 728 | + } | |
| 729 | + | |
| 730 | + throw new OpenDataException(javaClass.getName() + | |
| 731 | + " is not supported for platform MXBeans"); | |
| 732 | + } | |
| 733 | + | |
| 734 | + Object toJavaTypeData(Object data) | |
| 735 | + throws OpenDataException, InvalidObjectException { | |
| 736 | + | |
| 737 | + if (fromMethod == null) { | |
| 738 | + throw new AssertionError("Does not support data conversion"); | |
| 739 | + } | |
| 740 | + | |
| 741 | + try { | |
| 742 | + return fromMethod.invoke(null, data); | |
| 743 | + } catch (IllegalAccessException e) { | |
| 744 | + // should never reach here | |
| 745 | + throw new AssertionError(e); | |
| 746 | + } catch (InvocationTargetException e) { | |
| 747 | + final OpenDataException ode = | |
| 748 | + new OpenDataException("Failed to invoke " + | |
| 749 | + fromMethod.getName() + " to convert CompositeData " + | |
| 750 | + " to " + javaClass.getName()); | |
| 751 | + ode.initCause(e); | |
| 752 | + throw ode; | |
| 753 | + } | |
| 754 | + } | |
| 755 | + } | |
| 756 | + | |
| 757 | + private static class InProgress extends OpenType { | |
| 758 | + private static final String description = | |
| 759 | + "Marker to detect recursive type use -- internal use only!"; | |
| 760 | + | |
| 761 | + InProgress() throws OpenDataException { | |
| 762 | + super("java.lang.String", "java.lang.String", description); | |
| 763 | + } | |
| 764 | + | |
| 765 | + public String toString() { | |
| 766 | + return description; | |
| 767 | + } | |
| 768 | + | |
| 769 | + public int hashCode() { | |
| 770 | + return 0; | |
| 771 | + } | |
| 772 | + | |
| 773 | + public boolean equals(Object o) { | |
| 774 | + return false; | |
| 775 | + } | |
| 776 | + | |
| 777 | + public boolean isValue(Object o) { | |
| 778 | + return false; | |
| 779 | + } | |
| 780 | + private static final long serialVersionUID = -3413063475064374490L; | |
| 781 | + } | |
| 782 | + private static final OpenType inProgress; | |
| 783 | + static { | |
| 784 | + OpenType t; | |
| 785 | + try { | |
| 786 | + t = new InProgress(); | |
| 787 | + } catch (OpenDataException e) { | |
| 788 | + // Should not reach here | |
| 789 | + throw new AssertionError(e); | |
| 790 | + } | |
| 791 | + inProgress = t; | |
| 792 | + } | |
| 793 | + | |
| 794 | + private static final OpenType[] simpleTypes = { | |
| 795 | + BIGDECIMAL, BIGINTEGER, BOOLEAN, BYTE, CHARACTER, DATE, | |
| 796 | + DOUBLE, FLOAT, INTEGER, LONG, OBJECTNAME, SHORT, STRING, | |
| 797 | + VOID, | |
| 798 | + }; | |
| 799 | + static { | |
| 800 | + try { | |
| 801 | + for (int i = 0; i < simpleTypes.length; i++) { | |
| 802 | + final OpenType t = simpleTypes[i]; | |
| 803 | + Class c; | |
| 804 | + try { | |
| 805 | + c = Class.forName(t.getClassName(), false, | |
| 806 | + String.class.getClassLoader()); | |
| 807 | + MappedMXBeanType.newBasicType(c, t); | |
| 808 | + } catch (ClassNotFoundException e) { | |
| 809 | + // the classes that these predefined types declare | |
| 810 | + // must exist! | |
| 811 | + throw new AssertionError(e); | |
| 812 | + } catch (OpenDataException e) { | |
| 813 | + throw new AssertionError(e); | |
| 814 | + } | |
| 815 | + | |
| 816 | + if (c.getName().startsWith("java.lang.")) { | |
| 817 | + try { | |
| 818 | + final Field typeField = c.getField("TYPE"); | |
| 819 | + final Class primitiveType = (Class) typeField.get(null); | |
| 820 | + MappedMXBeanType.newBasicType(primitiveType, t); | |
| 821 | + } catch (NoSuchFieldException e) { | |
| 822 | + // OK: must not be a primitive wrapper | |
| 823 | + } catch (IllegalAccessException e) { | |
| 824 | + // Should not reach here | |
| 825 | + throw new AssertionError(e); | |
| 826 | + } | |
| 827 | + } | |
| 828 | + } | |
| 829 | + } catch (OpenDataException e) { | |
| 830 | + throw new AssertionError(e); | |
| 831 | + } | |
| 832 | + } | |
| 833 | + | |
| 834 | + /** | |
| 835 | + * Utility method to take a string and convert it to normal Java variable | |
| 836 | + * name capitalization. This normally means converting the first | |
| 837 | + * character from upper case to lower case, but in the (unusual) special | |
| 838 | + * case when there is more than one character and both the first and | |
| 839 | + * second characters are upper case, we leave it alone. | |
| 840 | + * <p> | |
| 841 | + * Thus "FooBah" becomes "fooBah" and "X" becomes "x", but "URL" stays | |
| 842 | + * as "URL". | |
| 843 | + * | |
| 844 | + * @param name The string to be decapitalized. | |
| 845 | + * @return The decapitalized version of the string. | |
| 846 | + */ | |
| 847 | + private static String decapitalize(String name) { | |
| 848 | + if (name == null || name.length() == 0) { | |
| 849 | + return name; | |
| 850 | + } | |
| 851 | + if (name.length() > 1 && Character.isUpperCase(name.charAt(1)) && | |
| 852 | + Character.isUpperCase(name.charAt(0))){ | |
| 853 | + return name; | |
| 854 | + } | |
| 855 | + char chars[] = name.toCharArray(); | |
| 856 | + chars[0] = Character.toLowerCase(chars[0]); | |
| 857 | + return new String(chars); | |
| 858 | + } | |
| 859 | + | |
| 860 | +} | |