| 1 | /* This file is part of the project "Hilbert II" - http://www.qedeq.org |
| 2 | * |
| 3 | * Copyright 2000-2014, Michael Meyling <mime@qedeq.org>. |
| 4 | * |
| 5 | * "Hilbert II" is free software; you can redistribute |
| 6 | * it and/or modify it under the terms of the GNU General Public |
| 7 | * License as published by the Free Software Foundation; either |
| 8 | * version 2 of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | */ |
| 15 | |
| 16 | package org.qedeq.kernel.bo; |
| 17 | |
| 18 | import java.io.File; |
| 19 | import java.io.FileOutputStream; |
| 20 | import java.io.IOException; |
| 21 | import java.net.URL; |
| 22 | import java.nio.channels.FileLock; |
| 23 | |
| 24 | import org.qedeq.base.io.IoUtility; |
| 25 | import org.qedeq.base.trace.Trace; |
| 26 | import org.qedeq.base.utility.StringUtility; |
| 27 | import org.qedeq.kernel.bo.common.BasicKernel; |
| 28 | import org.qedeq.kernel.bo.common.KernelProperties; |
| 29 | import org.qedeq.kernel.bo.common.KernelServices; |
| 30 | import org.qedeq.kernel.bo.common.KernelState; |
| 31 | import org.qedeq.kernel.bo.common.QedeqBo; |
| 32 | import org.qedeq.kernel.bo.common.Kernel; |
| 33 | import org.qedeq.kernel.bo.common.ServiceJob; |
| 34 | import org.qedeq.kernel.bo.log.QedeqLog; |
| 35 | import org.qedeq.kernel.se.common.ModuleAddress; |
| 36 | import org.qedeq.kernel.se.common.ModuleService; |
| 37 | import org.qedeq.kernel.se.config.QedeqConfig; |
| 38 | import org.qedeq.kernel.se.visitor.InterruptException; |
| 39 | |
| 40 | |
| 41 | /** |
| 42 | * This class provides static access methods for the kernel. |
| 43 | * |
| 44 | * @author Michael Meyling |
| 45 | */ |
| 46 | public final class KernelContext implements KernelProperties, KernelServices { |
| 47 | |
| 48 | /** Message for non started kernel. */ |
| 49 | private static final String KERNEL_NOT_STARTED = "Kernel not started"; |
| 50 | |
| 51 | /** Message for non initialized kernel. */ |
| 52 | private static final String KERNEL_NOT_INITIALIZED = "Kernel not initialized"; |
| 53 | |
| 54 | /** This class. */ |
| 55 | private static final Class CLASS = KernelContext.class; |
| 56 | |
| 57 | /** One and only instance of this class. */ |
| 58 | private static final KernelContext INSTANCE = new KernelContext(); |
| 59 | |
| 60 | /** Lock file. */ |
| 61 | private File lockFile; |
| 62 | |
| 63 | /** Lock file stream. */ |
| 64 | private FileOutputStream lockStream; |
| 65 | |
| 66 | /** Initial kernel state. */ |
| 67 | private final KernelState initialState = new KernelState() { |
| 68 | |
| 69 | public void init(final QedeqConfig config, final Kernel moduleServices, final KernelProperties basic) |
| 70 | throws IOException { |
| 71 | if (config == null) { |
| 72 | throw new NullPointerException("QedeqConfig is null"); |
| 73 | } |
| 74 | if (moduleServices == null) { |
| 75 | throw new NullPointerException("ServiceModule is null"); |
| 76 | } |
| 77 | if (basic == null) { |
| 78 | throw new NullPointerException("KernelProperties is null"); |
| 79 | } |
| 80 | KernelContext.this.config = config; |
| 81 | KernelContext.this.basic = basic; |
| 82 | Trace.setTraceOn(config.isTraceOn()); |
| 83 | checkJavaVersion(); |
| 84 | createAllNecessaryDirectories(); |
| 85 | checkIfApplicationIsAlreadyRunningAndLockFile(); |
| 86 | KernelContext.this.services = moduleServices; |
| 87 | QedeqLog.getInstance().logMessage("--------------------------------------------------" |
| 88 | + "---------------------------------------"); |
| 89 | QedeqLog.getInstance().logMessage("This is " |
| 90 | + KernelContext.getInstance().getDescriptiveKernelVersion()); |
| 91 | QedeqLog.getInstance().logMessage(" see \"http://www.qedeq.org\" for more " |
| 92 | + "information"); |
| 93 | QedeqLog.getInstance().logMessage(" supports rules till version " |
| 94 | + KernelContext.getInstance().getMaximalRuleVersion()); |
| 95 | QedeqLog.getInstance().logMessage(" Java version: " |
| 96 | + StringUtility.alignRight(System.getProperty("java.version", "unknown"), 10)); |
| 97 | QedeqLog.getInstance().logMessage(" used memory: " |
| 98 | + StringUtility.alignRight(Runtime.getRuntime().totalMemory() |
| 99 | - Runtime.getRuntime().freeMemory(), 10)); |
| 100 | QedeqLog.getInstance().logMessage(" free memory: " |
| 101 | + StringUtility.alignRight(Runtime.getRuntime().freeMemory(), 10)); |
| 102 | QedeqLog.getInstance().logMessage(" total memory: " |
| 103 | + StringUtility.alignRight(Runtime.getRuntime().totalMemory(), 10)); |
| 104 | QedeqLog.getInstance().logMessage(" max. memory: " |
| 105 | + StringUtility.alignRight(Runtime.getRuntime().maxMemory(), 10)); |
| 106 | QedeqLog.getInstance().logMessage(" processors/cores: " |
| 107 | + StringUtility.alignRight(Runtime.getRuntime().availableProcessors(), 6)); |
| 108 | currentState = initializedState; |
| 109 | } |
| 110 | |
| 111 | public void startup() { |
| 112 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 113 | } |
| 114 | |
| 115 | public void shutdown() { |
| 116 | currentState = initialState; |
| 117 | // close stream and associated channel |
| 118 | IoUtility.close(lockStream); |
| 119 | lockStream = null; |
| 120 | config = null; |
| 121 | services = null; |
| 122 | } |
| 123 | |
| 124 | public boolean removeAllModules() { |
| 125 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 126 | } |
| 127 | |
| 128 | public void removeModule(final ModuleAddress address) { |
| 129 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 130 | } |
| 131 | |
| 132 | public boolean clearLocalBuffer() { |
| 133 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 134 | } |
| 135 | |
| 136 | public QedeqBo loadModule(final ModuleAddress address) { |
| 137 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 138 | } |
| 139 | |
| 140 | public boolean loadAllModulesFromQedeq() { |
| 141 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 142 | } |
| 143 | |
| 144 | public boolean loadRequiredModules(final ModuleAddress address) { |
| 145 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 146 | } |
| 147 | |
| 148 | public ModuleAddress[] getAllLoadedModules() { |
| 149 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 150 | } |
| 151 | |
| 152 | public QedeqBo getQedeqBo(final ModuleAddress address) { |
| 153 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 154 | } |
| 155 | |
| 156 | public ModuleAddress getModuleAddress(final URL url) { |
| 157 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 158 | } |
| 159 | |
| 160 | public ModuleAddress getModuleAddress(final String url) { |
| 161 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 162 | } |
| 163 | |
| 164 | public ModuleAddress getModuleAddress(final File file) { |
| 165 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 166 | } |
| 167 | |
| 168 | public String getSource(final ModuleAddress address) { |
| 169 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 170 | } |
| 171 | |
| 172 | public boolean checkWellFormedness(final ModuleAddress address) { |
| 173 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 174 | } |
| 175 | |
| 176 | public boolean checkFormallyProved(final ModuleAddress address) { |
| 177 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 178 | } |
| 179 | |
| 180 | public ModuleService[] getPlugins() { |
| 181 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 182 | } |
| 183 | |
| 184 | public Object executePlugin(final String pluginName, final ModuleAddress address, |
| 185 | final Object data) { |
| 186 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 187 | } |
| 188 | |
| 189 | public void clearAllPluginResults(final ModuleAddress address) { |
| 190 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 191 | } |
| 192 | |
| 193 | public ServiceJob[] getServiceProcesses() { |
| 194 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 195 | } |
| 196 | |
| 197 | public ServiceJob[] getRunningServiceProcesses() { |
| 198 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 199 | } |
| 200 | |
| 201 | public void terminateAllServiceProcesses() { |
| 202 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 203 | } |
| 204 | |
| 205 | }; |
| 206 | |
| 207 | /** Initial kernel state. */ |
| 208 | private final KernelState initializedState = new KernelState() { |
| 209 | |
| 210 | public void init(final QedeqConfig config, final Kernel moduleServices, |
| 211 | final KernelProperties basic) throws IOException { |
| 212 | throw new IllegalStateException("Kernel is already initialized"); |
| 213 | } |
| 214 | |
| 215 | public void startup() { |
| 216 | services.startupServices(); |
| 217 | currentState = readyState; |
| 218 | QedeqLog.getInstance().logMessage("QEDEQ kernel opened."); |
| 219 | } |
| 220 | |
| 221 | public void shutdown() { |
| 222 | services.shutdownServices(); |
| 223 | KernelContext.this.services = null; |
| 224 | initialState.shutdown(); |
| 225 | QedeqLog.getInstance().logMessage("QEDEQ Kernel closed."); |
| 226 | } |
| 227 | |
| 228 | public boolean removeAllModules() { |
| 229 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 230 | } |
| 231 | |
| 232 | public void removeModule(final ModuleAddress address) { |
| 233 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 234 | } |
| 235 | |
| 236 | public boolean clearLocalBuffer() { |
| 237 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 238 | } |
| 239 | |
| 240 | public QedeqBo loadModule(final ModuleAddress address) { |
| 241 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 242 | } |
| 243 | |
| 244 | public boolean loadAllModulesFromQedeq() { |
| 245 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 246 | } |
| 247 | |
| 248 | public boolean loadRequiredModules(final ModuleAddress address) { |
| 249 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 250 | } |
| 251 | |
| 252 | public ModuleAddress[] getAllLoadedModules() { |
| 253 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 254 | } |
| 255 | |
| 256 | public QedeqBo getQedeqBo(final ModuleAddress address) { |
| 257 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 258 | } |
| 259 | |
| 260 | public ModuleAddress getModuleAddress(final URL url) { |
| 261 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 262 | } |
| 263 | |
| 264 | public ModuleAddress getModuleAddress(final String url) { |
| 265 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 266 | } |
| 267 | |
| 268 | public ModuleAddress getModuleAddress(final File file) { |
| 269 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 270 | } |
| 271 | |
| 272 | public String getSource(final ModuleAddress address) { |
| 273 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 274 | } |
| 275 | |
| 276 | public boolean checkWellFormedness(final ModuleAddress address) { |
| 277 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 278 | } |
| 279 | |
| 280 | public boolean checkFormallyProved(final ModuleAddress address) { |
| 281 | throw new IllegalStateException(KERNEL_NOT_INITIALIZED); |
| 282 | } |
| 283 | |
| 284 | public ModuleService[] getPlugins() { |
| 285 | return services.getPlugins(); |
| 286 | } |
| 287 | |
| 288 | public Object executePlugin(final String pluginName, final ModuleAddress address, |
| 289 | final Object data) { |
| 290 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 291 | } |
| 292 | |
| 293 | public void clearAllPluginResults(final ModuleAddress address) { |
| 294 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 295 | } |
| 296 | |
| 297 | public ServiceJob[] getServiceProcesses() { |
| 298 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 299 | } |
| 300 | |
| 301 | public ServiceJob[] getRunningServiceProcesses() { |
| 302 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 303 | } |
| 304 | |
| 305 | public void terminateAllServiceProcesses() { |
| 306 | throw new IllegalStateException(KERNEL_NOT_STARTED); |
| 307 | } |
| 308 | |
| 309 | }; |
| 310 | |
| 311 | /** State for ready kernel. */ |
| 312 | private final KernelState readyState = new KernelState() { |
| 313 | |
| 314 | public void init(final QedeqConfig config, final Kernel moduleServices, |
| 315 | final KernelProperties basic) throws IOException { |
| 316 | // we are already ready |
| 317 | } |
| 318 | |
| 319 | public void startup() { |
| 320 | // we are already ready |
| 321 | } |
| 322 | |
| 323 | public void shutdown() { |
| 324 | try { |
| 325 | final ModuleAddress[] addresses = services.getAllLoadedModules(); |
| 326 | if (addresses != null) { |
| 327 | final String[] buffer = new String[addresses.length]; |
| 328 | for (int i = 0; i < addresses.length; i++) { |
| 329 | buffer[i] = addresses[i].toString(); |
| 330 | } |
| 331 | getConfig().setPreviouslyLoadedModules(buffer); |
| 332 | getConfig().store(); |
| 333 | QedeqLog.getInstance().logMessage("Current config file successfully saved."); |
| 334 | } |
| 335 | } catch (IOException e) { |
| 336 | Trace.trace(CLASS, this, "shutdown()", e); |
| 337 | QedeqLog.getInstance().logMessage("Saving current config file failed."); |
| 338 | } |
| 339 | initializedState.shutdown(); |
| 340 | } |
| 341 | |
| 342 | public boolean removeAllModules() { |
| 343 | return services.removeAllModules(); |
| 344 | } |
| 345 | |
| 346 | public void removeModule(final ModuleAddress address) { |
| 347 | services.removeModule(address); |
| 348 | } |
| 349 | |
| 350 | public boolean clearLocalBuffer() { |
| 351 | return services.clearLocalBuffer(); |
| 352 | } |
| 353 | |
| 354 | public QedeqBo loadModule(final ModuleAddress address) { |
| 355 | return services.loadModule(address); |
| 356 | } |
| 357 | |
| 358 | public boolean loadAllModulesFromQedeq() { |
| 359 | return services.loadAllModulesFromQedeq(); |
| 360 | } |
| 361 | |
| 362 | public boolean loadRequiredModules(final ModuleAddress address) { |
| 363 | return services.loadRequiredModules(address); |
| 364 | } |
| 365 | |
| 366 | public ModuleAddress[] getAllLoadedModules() { |
| 367 | return services.getAllLoadedModules(); |
| 368 | } |
| 369 | |
| 370 | public QedeqBo getQedeqBo(final ModuleAddress address) { |
| 371 | return services.getQedeqBo(address); |
| 372 | } |
| 373 | |
| 374 | public ModuleAddress getModuleAddress(final URL url) throws IOException { |
| 375 | return services.getModuleAddress(url); |
| 376 | } |
| 377 | |
| 378 | public ModuleAddress getModuleAddress(final String url) throws IOException { |
| 379 | return services.getModuleAddress(url); |
| 380 | } |
| 381 | |
| 382 | public ModuleAddress getModuleAddress(final File file) throws IOException { |
| 383 | return services.getModuleAddress(file); |
| 384 | } |
| 385 | |
| 386 | public String getSource(final ModuleAddress address) throws IOException { |
| 387 | return services.getSource(address); |
| 388 | } |
| 389 | |
| 390 | public boolean checkWellFormedness(final ModuleAddress address) { |
| 391 | return services.checkWellFormedness(address); |
| 392 | } |
| 393 | |
| 394 | public boolean checkFormallyProved(final ModuleAddress address) { |
| 395 | return services.checkFormallyProved(address); |
| 396 | } |
| 397 | |
| 398 | public ModuleService[] getPlugins() { |
| 399 | return services.getPlugins(); |
| 400 | } |
| 401 | |
| 402 | public Object executePlugin(final String pluginName, final ModuleAddress address, |
| 403 | final Object data) throws InterruptException { |
| 404 | return services.executePlugin(pluginName, address, data); |
| 405 | } |
| 406 | |
| 407 | public void clearAllPluginResults(final ModuleAddress address) { |
| 408 | services.clearAllPluginResults(address); |
| 409 | } |
| 410 | |
| 411 | public ServiceJob[] getServiceProcesses() { |
| 412 | return services.getServiceProcesses(); |
| 413 | } |
| 414 | |
| 415 | public ServiceJob[] getRunningServiceProcesses() { |
| 416 | return services.getRunningServiceProcesses(); |
| 417 | } |
| 418 | |
| 419 | public void terminateAllServiceProcesses() { |
| 420 | services.terminateAllServiceProcesses(); |
| 421 | } |
| 422 | |
| 423 | }; |
| 424 | |
| 425 | /** Kernel configuration. */ |
| 426 | private QedeqConfig config; |
| 427 | |
| 428 | /** Initial kernel state. */ |
| 429 | private KernelState currentState = initialState; |
| 430 | |
| 431 | /** For basic kernel informations. */ |
| 432 | private KernelProperties basic; |
| 433 | |
| 434 | /** This object can service QEDEQ modules. */ |
| 435 | private Kernel services; |
| 436 | |
| 437 | /** |
| 438 | * Constructor. |
| 439 | */ |
| 440 | private KernelContext() { |
| 441 | basic = new BasicKernel(); |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * Get instance of kernel context. |
| 446 | * |
| 447 | * @return Singleton, which is responsible for the kernel access. |
| 448 | */ |
| 449 | public static final KernelContext getInstance() { |
| 450 | return INSTANCE; |
| 451 | } |
| 452 | |
| 453 | public String getBuildId() { |
| 454 | return basic.getBuildId(); |
| 455 | } |
| 456 | |
| 457 | public final String getKernelVersion() { |
| 458 | return basic.getKernelVersion(); |
| 459 | } |
| 460 | |
| 461 | public final String getKernelCodeName() { |
| 462 | return basic.getKernelCodeName(); |
| 463 | } |
| 464 | |
| 465 | public final String getKernelVersionDirectory() { |
| 466 | return basic.getKernelVersionDirectory(); |
| 467 | } |
| 468 | |
| 469 | public final String getDescriptiveKernelVersion() { |
| 470 | return basic.getDescriptiveKernelVersion(); |
| 471 | } |
| 472 | |
| 473 | public final String getDedication() { |
| 474 | return basic.getDedication(); |
| 475 | } |
| 476 | |
| 477 | public final String getMaximalRuleVersion() { |
| 478 | return basic.getMaximalRuleVersion(); |
| 479 | } |
| 480 | |
| 481 | public final boolean isRuleVersionSupported(final String ruleVersion) { |
| 482 | return basic.isRuleVersionSupported(ruleVersion); |
| 483 | } |
| 484 | |
| 485 | public boolean isSetConnectionTimeOutSupported() { |
| 486 | return basic.isSetConnectionTimeOutSupported(); |
| 487 | } |
| 488 | |
| 489 | public boolean isSetReadTimeoutSupported() { |
| 490 | return basic.isSetReadTimeoutSupported(); |
| 491 | } |
| 492 | |
| 493 | public QedeqConfig getConfig() { |
| 494 | return config; |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * Init the kernel. |
| 499 | * |
| 500 | * @param config Configuration access. Must not be <code>null</code>. |
| 501 | * @param moduleServices Services for the kernel. Must not be <code>null</code>. |
| 502 | * @throws IllegalStateException Kernel is already initialized. |
| 503 | * @throws IOException Initialization failure. |
| 504 | */ |
| 505 | public void init(final QedeqConfig config, final Kernel moduleServices) throws IOException { |
| 506 | currentState.init(config, moduleServices, basic); |
| 507 | } |
| 508 | |
| 509 | /** |
| 510 | * Startup the kernel. |
| 511 | */ |
| 512 | public void startup() { |
| 513 | currentState.startup(); |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Shutdown the kernel. |
| 518 | */ |
| 519 | public void shutdown() { |
| 520 | currentState.shutdown(); |
| 521 | } |
| 522 | |
| 523 | public boolean removeAllModules() { |
| 524 | return currentState.removeAllModules(); |
| 525 | } |
| 526 | |
| 527 | public void removeModule(final ModuleAddress address) { |
| 528 | currentState.removeModule(address); |
| 529 | } |
| 530 | |
| 531 | public boolean clearLocalBuffer() { |
| 532 | return currentState.clearLocalBuffer(); |
| 533 | } |
| 534 | |
| 535 | public QedeqBo loadModule(final ModuleAddress address) { |
| 536 | return currentState.loadModule(address); |
| 537 | } |
| 538 | |
| 539 | public boolean loadAllModulesFromQedeq() { |
| 540 | return currentState.loadAllModulesFromQedeq(); |
| 541 | } |
| 542 | |
| 543 | public boolean loadRequiredModules(final ModuleAddress address) { |
| 544 | return currentState.loadRequiredModules(address); |
| 545 | } |
| 546 | |
| 547 | public ModuleAddress[] getAllLoadedModules() { |
| 548 | return currentState.getAllLoadedModules(); |
| 549 | } |
| 550 | |
| 551 | public QedeqBo getQedeqBo(final ModuleAddress address) { |
| 552 | return currentState.getQedeqBo(address); |
| 553 | } |
| 554 | |
| 555 | public ModuleAddress getModuleAddress(final URL url) throws IOException { |
| 556 | return currentState.getModuleAddress(url); |
| 557 | } |
| 558 | |
| 559 | public ModuleAddress getModuleAddress(final String url) throws IOException { |
| 560 | return currentState.getModuleAddress(url); |
| 561 | } |
| 562 | |
| 563 | public ModuleAddress getModuleAddress(final File file) throws IOException { |
| 564 | return currentState.getModuleAddress(file); |
| 565 | } |
| 566 | |
| 567 | public String getSource(final ModuleAddress address) throws IOException { |
| 568 | return currentState.getSource(address); |
| 569 | } |
| 570 | |
| 571 | public boolean checkWellFormedness(final ModuleAddress address) { |
| 572 | return currentState.checkWellFormedness(address); |
| 573 | } |
| 574 | |
| 575 | public boolean checkFormallyProved(final ModuleAddress address) { |
| 576 | return currentState.checkFormallyProved(address); |
| 577 | } |
| 578 | |
| 579 | public ModuleService[] getPlugins() { |
| 580 | return currentState.getPlugins(); |
| 581 | } |
| 582 | |
| 583 | public Object executePlugin(final String pluginName, final ModuleAddress address, |
| 584 | final Object data) throws InterruptException { |
| 585 | return currentState.executePlugin(pluginName, address, data); |
| 586 | } |
| 587 | |
| 588 | public void clearAllPluginResults(final ModuleAddress address) { |
| 589 | currentState.clearAllPluginResults(address); |
| 590 | } |
| 591 | |
| 592 | public ServiceJob[] getServiceProcesses() { |
| 593 | return currentState.getServiceProcesses(); |
| 594 | } |
| 595 | |
| 596 | public ServiceJob[] getRunningServiceProcesses() { |
| 597 | return currentState.getRunningServiceProcesses(); |
| 598 | } |
| 599 | |
| 600 | public void terminateAllServiceProcesses() { |
| 601 | currentState.terminateAllServiceProcesses(); |
| 602 | } |
| 603 | |
| 604 | /** |
| 605 | * Check java version. We want to be sure that the kernel is run at least with java 1.4.2 |
| 606 | * |
| 607 | * @throws IOException Application is running below java 1.4.2. |
| 608 | */ |
| 609 | private void checkJavaVersion() throws IOException { |
| 610 | final String method = "checkJavaVersion"; |
| 611 | Trace.info(CLASS, this, method, "running on java version " |
| 612 | + System.getProperty("java.version")); |
| 613 | final int[] versions = IoUtility.getJavaVersion(); |
| 614 | if (versions == null) { |
| 615 | Trace.fatal(CLASS, this, method, "running java version unknown", null); |
| 616 | // we try to continue |
| 617 | return; |
| 618 | } |
| 619 | final StringBuffer version = new StringBuffer(); |
| 620 | for (int i = 0; i < versions.length; i++) { |
| 621 | if (i > 0) { |
| 622 | version.append("."); |
| 623 | } |
| 624 | version.append(versions[i]); |
| 625 | } |
| 626 | Trace.paramInfo(CLASS, this, method, "version", version); |
| 627 | // >= 1 |
| 628 | if (versions.length < 1 || versions[0] < 1) { |
| 629 | throw new IOException("This application requires at least Java 1.4.2 but we got " |
| 630 | + version); |
| 631 | } |
| 632 | if (versions[0] == 1) { // further checking |
| 633 | // >= 1.4 |
| 634 | if (versions.length < 2 || versions[1] < 4) { |
| 635 | throw new IOException("This application requires at least Java 1.4.2 but we got " |
| 636 | + version); |
| 637 | } |
| 638 | if (versions[1] == 4) { // further checking |
| 639 | // >=1.4.2 |
| 640 | if (versions.length < 3 || versions[2] < 2) { |
| 641 | throw new IOException( |
| 642 | "This application requires at least Java 1.4.2 but we got " |
| 643 | + version); |
| 644 | } |
| 645 | } |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * Create all necessary directories for the kernel. |
| 651 | * |
| 652 | * @throws IOException Creation was not possible. |
| 653 | */ |
| 654 | void createAllNecessaryDirectories() throws IOException { |
| 655 | // log directory |
| 656 | final File logFile = getConfig().getLogFile(); |
| 657 | final File logDir = logFile.getParentFile(); |
| 658 | if (!logDir.exists() && !logDir.mkdirs()) { |
| 659 | throw new IOException("can't create directory: " + logDir.getAbsolutePath()); |
| 660 | } |
| 661 | // buffer directory |
| 662 | final File bufferDir = getConfig().getBufferDirectory(); |
| 663 | if (!bufferDir.exists() && !bufferDir.mkdirs()) { |
| 664 | throw new IOException("can't create directory: " + bufferDir.getAbsolutePath()); |
| 665 | } |
| 666 | // generation directory |
| 667 | final File generationDir = getConfig().getGenerationDirectory(); |
| 668 | if (!generationDir.exists() && !generationDir.mkdirs()) { |
| 669 | throw new IOException("can't create directory: " + generationDir.getAbsolutePath()); |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | /** |
| 674 | * Checks if the application is already running. To check that we create a file in the |
| 675 | * buffer directory, open a stream and write something into it. The stream is not closed |
| 676 | * until kernel shutdown. |
| 677 | * |
| 678 | * @throws IOException Application is already running. |
| 679 | */ |
| 680 | private void checkIfApplicationIsAlreadyRunningAndLockFile() |
| 681 | throws IOException { |
| 682 | lockFile = new File(getConfig().getBufferDirectory(), "qedeq_lock.lck"); |
| 683 | FileLock fl = null; |
| 684 | try { |
| 685 | lockStream = new FileOutputStream(lockFile); |
| 686 | lockStream.write("LOCKED".getBytes("UTF8")); |
| 687 | lockStream.flush(); |
| 688 | fl = lockStream.getChannel().tryLock(); |
| 689 | } catch (IOException e) { |
| 690 | throw new IOException("It seems the application is already running.\n" |
| 691 | + "At least accessing the file \"" + lockFile.getAbsolutePath() + "\" failed."); |
| 692 | } |
| 693 | if (fl == null) { |
| 694 | throw new IOException("It seems the application is already running.\n" |
| 695 | + "At least locking the file \"" + lockFile.getAbsolutePath() + "\" failed."); |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | } |