Jobs
2 years ago
AbstractJob.php
2 years ago
JobBackupProvider.php
3 years ago
JobProvider.php
3 years ago
JobRestoreProvider.php
3 years ago
AbstractJob.php
470 lines
| 1 | <?php |
| 2 | |
| 3 | // TODO PHP7.x; declare(strict_types=1); |
| 4 | // TODO PHP7.x; return types && type-hints |
| 5 | |
| 6 | namespace WPStaging\Backup\Job; |
| 7 | |
| 8 | use RuntimeException; |
| 9 | use WPStaging\Core\Utils\Logger; |
| 10 | use WPStaging\Framework\Adapter\Directory; |
| 11 | use WPStaging\Framework\Exceptions\WPStagingException; |
| 12 | use WPStaging\Framework\Filesystem\DiskWriteCheck; |
| 13 | use WPStaging\Framework\Filesystem\Filesystem; |
| 14 | use WPStaging\Framework\Interfaces\ShutdownableInterface; |
| 15 | use WPStaging\Framework\Traits\BenchmarkTrait; |
| 16 | use WPStaging\Backup\BackupProcessLock; |
| 17 | use WPStaging\Backup\Dto\AbstractDto; |
| 18 | use WPStaging\Backup\Exceptions\DiskNotWritableException; |
| 19 | use WPStaging\Backup\Exceptions\ProcessLockedException; |
| 20 | use WPStaging\Backup\Exceptions\TaskHealthException; |
| 21 | use WPStaging\Backup\Task\AbstractTask; |
| 22 | use WPStaging\Backup\Dto\TaskResponseDto; |
| 23 | use WPStaging\Framework\Utils\Cache\Cache; |
| 24 | use WPStaging\Core\WPStaging; |
| 25 | use WPStaging\Framework\Facades\Sanitize; |
| 26 | use WPStaging\Framework\Queue\FinishedQueueException; |
| 27 | use WPStaging\Backup\Dto\JobDataDto; |
| 28 | |
| 29 | use function WPStaging\functions\debug_log; |
| 30 | |
| 31 | abstract class AbstractJob implements ShutdownableInterface |
| 32 | { |
| 33 | use BenchmarkTrait; |
| 34 | |
| 35 | /** |
| 36 | * Filter name for storing the number of maximum request retries |
| 37 | * @var string |
| 38 | */ |
| 39 | const TEST_FILTER_MAXIMUM_RETRIES = 'wpstg.tests.maximum_retries'; |
| 40 | |
| 41 | /** @var JobDataDto */ |
| 42 | protected $jobDataDto; |
| 43 | |
| 44 | /** @var Cache $jobDataCache Persists the JobDataDto in the filesystem. */ |
| 45 | private $jobDataCache; |
| 46 | |
| 47 | /** @var string */ |
| 48 | protected $currentTaskName; |
| 49 | |
| 50 | /** @var AbstractTask */ |
| 51 | protected $currentTask; |
| 52 | |
| 53 | /** @var Filesystem */ |
| 54 | protected $filesystem; |
| 55 | |
| 56 | /** @var Directory */ |
| 57 | protected $directory; |
| 58 | |
| 59 | /** @var BackupProcessLock */ |
| 60 | protected $processLock; |
| 61 | |
| 62 | /** @var DiskWriteCheck */ |
| 63 | protected $diskFullCheck; |
| 64 | |
| 65 | /** @var string|false */ |
| 66 | protected $memoryExhaustErrorTmpFile = false; |
| 67 | |
| 68 | protected $maxRetries = 10; |
| 69 | |
| 70 | public function __construct( |
| 71 | Cache $jobDataCache, |
| 72 | JobDataDto $jobDataDto, |
| 73 | Filesystem $filesystem, |
| 74 | Directory $directory, |
| 75 | BackupProcessLock $processLock, |
| 76 | DiskWriteCheck $diskFullCheck |
| 77 | ) { |
| 78 | $this->jobDataDto = $jobDataDto; |
| 79 | $this->jobDataCache = $jobDataCache; |
| 80 | $this->filesystem = $filesystem; |
| 81 | $this->directory = $directory; |
| 82 | |
| 83 | $this->jobDataCache->setLifetime(HOUR_IN_SECONDS); |
| 84 | $this->jobDataCache->setFilename('jobCache_' . $this::getJobName()); |
| 85 | |
| 86 | $this->processLock = $processLock; |
| 87 | $this->diskFullCheck = $diskFullCheck; |
| 88 | $this->maxRetries = apply_filters(self::TEST_FILTER_MAXIMUM_RETRIES, $this->maxRetries); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Persists the Job status to the current cross-request caching system. |
| 93 | * |
| 94 | * This method will be invoked in the context of the WordPress `shutdown` hook and should |
| 95 | * not be invoked out of that context if not with full knowledge of its side-effects. |
| 96 | * |
| 97 | * @return void The method has the side-effect of persisting the Job status to the caching |
| 98 | * system. |
| 99 | */ |
| 100 | public function persist() |
| 101 | { |
| 102 | if ($this->jobDataDto->isStatusCheck()) { |
| 103 | return; |
| 104 | } |
| 105 | |
| 106 | try { |
| 107 | $this->diskFullCheck->testDiskIsWriteable(); |
| 108 | } catch (DiskNotWritableException $e) { |
| 109 | // no-op, this is handled on the beginning of the next request |
| 110 | } |
| 111 | |
| 112 | if ($this->jobDataDto->isFinished() && !$this->jobDataDto->isCleaned()) { |
| 113 | $this->cleanup(); |
| 114 | $this->jobDataDto->setCleaned(); |
| 115 | return; |
| 116 | } |
| 117 | |
| 118 | if ($this->currentTask instanceof AbstractTask) { |
| 119 | $this->jobDataDto->setQueueOffset($this->currentTask->getQueue()->getOffset()); |
| 120 | $this->currentTask->persistStepsDto(); |
| 121 | } |
| 122 | |
| 123 | $data = $this->jobDataDto->toArray(); |
| 124 | |
| 125 | try { |
| 126 | $this->jobDataCache->save($data, true); |
| 127 | } catch (\Exception $e) { |
| 128 | debug_log("Could not persist Job data to cache:" . $e->getMessage()); |
| 129 | throw new \RuntimeException('Could not persist Job data to cache: ' . $e->getMessage(), 0, $e); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * This method will be called in the context of the WordPress `shutdown` action to |
| 135 | * persist the Job status once and only once. |
| 136 | * |
| 137 | * @return void The method has the side-effect of persisting the Job status to the caching |
| 138 | * system. |
| 139 | */ |
| 140 | public function onWpShutdown() |
| 141 | { |
| 142 | $this->persist(); |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * @return string |
| 147 | * @throws WPStagingException |
| 148 | */ |
| 149 | public static function getJobName() |
| 150 | { |
| 151 | throw new WPStagingException('Any extending class MUST override the getJobName method.'); |
| 152 | } |
| 153 | |
| 154 | /** @return array */ |
| 155 | abstract protected function getJobTasks(); |
| 156 | |
| 157 | /** @return TaskResponseDto */ |
| 158 | abstract protected function execute(); |
| 159 | |
| 160 | /** @return void */ |
| 161 | abstract protected function init(); |
| 162 | |
| 163 | /** @return TaskResponseDto */ |
| 164 | public function prepareAndExecute() |
| 165 | { |
| 166 | try { |
| 167 | // Check if the last request bailed with a Disk Write failure flag. |
| 168 | $this->diskFullCheck->hasDiskWriteTestFailed(); |
| 169 | } catch (DiskNotWritableException $e) { |
| 170 | $response = new TaskResponseDto(); |
| 171 | $response->setIsRunning(false); |
| 172 | $response->setJobStatus('JOB_FAIL'); |
| 173 | $response->addMessage([ |
| 174 | 'type' => 'critical', |
| 175 | 'date' => $this->getFormattedDate(), |
| 176 | 'message' => $e->getMessage(), |
| 177 | ]); |
| 178 | |
| 179 | $this->jobDataCache->delete(); |
| 180 | |
| 181 | return $response; |
| 182 | } |
| 183 | |
| 184 | try { |
| 185 | try { |
| 186 | $this->prepare(); |
| 187 | } catch (TaskHealthException $e) { |
| 188 | $response = new TaskResponseDto(); |
| 189 | |
| 190 | if ($e->getCode() === TaskHealthException::CODE_TASK_FAILED_TOO_MANY_TIMES) { |
| 191 | // Signal to JavaScript that this Job failed if no further requests should be made. |
| 192 | $response->setIsRunning(false); |
| 193 | $response->setJobStatus('JOB_FAIL'); |
| 194 | $response->addMessage([ |
| 195 | 'type' => 'critical', |
| 196 | 'date' => $this->getFormattedDate(), |
| 197 | 'message' => $e->getMessage(), |
| 198 | ]); |
| 199 | |
| 200 | $this->jobDataCache->delete(); |
| 201 | } else { |
| 202 | $response->setIsRunning(true); |
| 203 | $response->setJobStatus('JOB_RETRY'); |
| 204 | $response->addMessage([ |
| 205 | 'type' => 'warning', |
| 206 | 'date' => $this->getFormattedDate(), |
| 207 | 'message' => $e->getMessage(), |
| 208 | ]); |
| 209 | } |
| 210 | |
| 211 | return $response; |
| 212 | } catch (RuntimeException $ex) { |
| 213 | $response = new TaskResponseDto(); |
| 214 | |
| 215 | $response->setIsRunning(false); |
| 216 | $response->setJobStatus('JOB_FAIL'); |
| 217 | |
| 218 | $response->addMessage([ |
| 219 | 'type' => 'critical', |
| 220 | 'date' => $this->getFormattedDate(), |
| 221 | 'message' => $ex->getMessage(), |
| 222 | ]); |
| 223 | |
| 224 | $this->jobDataCache->delete(); |
| 225 | |
| 226 | return $response; |
| 227 | } |
| 228 | |
| 229 | $this->processLock->lockProcess(); |
| 230 | |
| 231 | /** @var TaskResponseDto $response */ |
| 232 | $response = $this->execute(); |
| 233 | |
| 234 | $this->processLock->unlockProcess(); |
| 235 | |
| 236 | /* |
| 237 | * Let's display the name of the task running now, instead |
| 238 | * of the task that just run to the user. |
| 239 | * |
| 240 | * Since we already popped from the queue to get here, |
| 241 | * the current item now is the next. |
| 242 | */ |
| 243 | $nextTask = $this->jobDataDto->getCurrentTask(); |
| 244 | |
| 245 | if (is_subclass_of($nextTask, AbstractTask::class)) { |
| 246 | $response->setStatusTitle(call_user_func("$nextTask::getTaskTitle")); |
| 247 | } |
| 248 | |
| 249 | $this->removeMemoryExhaustErrorTmpFile(); |
| 250 | return $response; |
| 251 | } catch (DiskNotWritableException $e) { |
| 252 | /** |
| 253 | * Assume a DiskWriteCheck flag has been set, so the next request can pick it up. |
| 254 | * |
| 255 | * @see DiskWriteCheck::testDiskIsWriteable() |
| 256 | * @see DiskWriteCheck::hasDiskWriteTestFailed() |
| 257 | */ |
| 258 | $response = new TaskResponseDto(); |
| 259 | $response->setIsRunning(false); |
| 260 | $response->setJobStatus('JOB_RETRY'); |
| 261 | $response->addMessage([ |
| 262 | 'type' => 'warning', |
| 263 | 'date' => $this->getFormattedDate(), |
| 264 | 'message' => $e->getMessage(), |
| 265 | ]); |
| 266 | |
| 267 | return $response; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * @return JobDataDto |
| 273 | */ |
| 274 | public function getJobDataDto() |
| 275 | { |
| 276 | return $this->jobDataDto; |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * @var $jobDataDto JobDataDto |
| 281 | */ |
| 282 | public function setJobDataDto($jobDataDto) |
| 283 | { |
| 284 | $this->jobDataDto = $jobDataDto; |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * @return void |
| 289 | */ |
| 290 | protected function checkLastTaskHealth() |
| 291 | { |
| 292 | // Early bail: No task health on a task that is retrying a failed request. We will evaluate that on the next request. |
| 293 | if ($this->jobDataDto->getTaskHealthIsRetrying()) { |
| 294 | $this->processLock->unlockProcess(); |
| 295 | $this->jobDataDto->setTaskHealthIsRetrying(false); |
| 296 | |
| 297 | return; |
| 298 | } |
| 299 | |
| 300 | if (!$this->jobDataDto->getTaskHealthResponded()) { |
| 301 | // This happens when the previous task started but never generated a response. |
| 302 | $this->jobDataDto->setTaskHealthSequentialFailedRetries($this->jobDataDto->getTaskHealthSequentialFailedRetries() + 1); |
| 303 | $this->jobDataCache->save($this->jobDataDto); |
| 304 | |
| 305 | if ($this->jobDataDto->getTaskHealthSequentialFailedRetries() >= $this->maxRetries) { |
| 306 | throw TaskHealthException::taskFailedTooManyTimes(); |
| 307 | } else { |
| 308 | $this->jobDataDto->setTaskHealthIsRetrying(true); |
| 309 | throw TaskHealthException::retryingTask($this->jobDataDto->getTaskHealthSequentialFailedRetries(), $this->maxRetries); |
| 310 | } |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | public function prepare() |
| 315 | { |
| 316 | $data = $this->jobDataCache->get([]); |
| 317 | |
| 318 | if ($data) { |
| 319 | $this->jobDataDto->hydrate($data); |
| 320 | } |
| 321 | |
| 322 | // From now on, classes that require a JobDataDto will receive this instance. |
| 323 | WPStaging::getInstance()->getContainer()->singleton(JobDataDto::class, $this->jobDataDto); |
| 324 | |
| 325 | // TODO RPoC Hack |
| 326 | $this->jobDataDto->setStatusCheck(!empty($_GET['action']) && $_GET['action'] === 'wpstg--backups--status'); |
| 327 | |
| 328 | if ($this->jobDataDto->isStatusCheck()) { |
| 329 | return; |
| 330 | } |
| 331 | |
| 332 | if ($this->jobDataDto->isInit()) { |
| 333 | $this->cleanup(); |
| 334 | $this->init(); |
| 335 | $this->jobDataDto->setCurrentTaskIndex(0); |
| 336 | $this->jobDataDto->setCurrentTaskData([]); |
| 337 | $this->addTasks($this->getJobTasks()); |
| 338 | } else { |
| 339 | $this->checkLastTaskHealth(); |
| 340 | } |
| 341 | |
| 342 | $retry = isset($_REQUEST['retry']) ? Sanitize::sanitizeBool($_REQUEST['retry']) : false; |
| 343 | try { |
| 344 | if ($retry) { |
| 345 | $this->processLock->unlockProcess(); |
| 346 | } |
| 347 | |
| 348 | $this->processLock->checkProcessLocked(); |
| 349 | } catch (ProcessLockedException $e) { |
| 350 | wp_send_json_error($e->getMessage(), $e->getCode()); |
| 351 | } |
| 352 | |
| 353 | $this->jobDataDto->setInit(false); |
| 354 | |
| 355 | $this->currentTaskName = $this->jobDataDto->getCurrentTask(); |
| 356 | |
| 357 | if (empty($this->currentTaskName)) { |
| 358 | throw new \RuntimeException('Internal error: Next task of queue job is null or invalid.'); |
| 359 | } |
| 360 | |
| 361 | /** @var AbstractTask currentTask */ |
| 362 | $this->currentTask = WPStaging::getInstance()->get($this->currentTaskName); |
| 363 | |
| 364 | if (!$this->currentTask instanceof AbstractTask) { |
| 365 | throw new \RuntimeException('Is there enough free disk space? Please free up some space. Delete old backup files and staging sites and try again. Error: Next task of queue job is null or invalid. Task name: ' . $this->currentTaskName . ' Task: ' . print_r($this->currentTask, true)); |
| 366 | } |
| 367 | |
| 368 | if (!$this->jobDataDto instanceof AbstractDto) { |
| 369 | throw new \RuntimeException('Job Queue DTO is null or invalid.'); |
| 370 | } |
| 371 | |
| 372 | $this->currentTask->setJobContext($this); |
| 373 | $this->currentTask->setJobDataDto($this->jobDataDto); |
| 374 | $this->currentTask->setJobId($this->jobDataDto->getId()); |
| 375 | $this->currentTask->setJobName($this::getJobName()); |
| 376 | $this->currentTask->setDebug(defined('WPSTG_DEBUG') && WPSTG_DEBUG); |
| 377 | |
| 378 | // Initialize Task Health Status |
| 379 | $this->jobDataDto->setTaskHealthName($this->currentTaskName); |
| 380 | $this->jobDataDto->setTaskHealthResponded(false); |
| 381 | } |
| 382 | |
| 383 | /** @return AbstractTask */ |
| 384 | public function getCurrentTask() |
| 385 | { |
| 386 | return $this->currentTask; |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * @param string $memoryExhaustErrorTmpFile |
| 391 | * @return void |
| 392 | */ |
| 393 | public function setMemoryExhaustErrorTmpFile(string $memoryExhaustErrorTmpFile) |
| 394 | { |
| 395 | $this->memoryExhaustErrorTmpFile = $memoryExhaustErrorTmpFile; |
| 396 | } |
| 397 | |
| 398 | protected function removeMemoryExhaustErrorTmpFile() |
| 399 | { |
| 400 | if ($this->memoryExhaustErrorTmpFile === '') { |
| 401 | return; |
| 402 | } |
| 403 | |
| 404 | if (file_exists($this->memoryExhaustErrorTmpFile)) { |
| 405 | unlink($this->memoryExhaustErrorTmpFile); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | protected function cleanup() |
| 410 | { |
| 411 | // This excludes all files except cache files from deleting i.e. only delete .cache files |
| 412 | $this->filesystem->setExcludePaths(['*.*', '!*.cache.php', '!*.cache', '!*.wpstg', '!*.sql']); |
| 413 | $this->filesystem->delete($this->directory->getCacheDirectory(), $deleteSelf = false); |
| 414 | $this->filesystem->setExcludePaths([]); |
| 415 | $this->filesystem->mkdir($this->directory->getCacheDirectory(), true); |
| 416 | } |
| 417 | |
| 418 | /** |
| 419 | * @param TaskResponseDto $response |
| 420 | * |
| 421 | * @return TaskResponseDto |
| 422 | */ |
| 423 | protected function getResponse(TaskResponseDto $response) |
| 424 | { |
| 425 | $this->jobDataDto->setTaskHealthResponded(true); |
| 426 | $this->jobDataDto->setTaskHealthSequentialFailedRetries(0); |
| 427 | |
| 428 | $response->setJob(substr($this->findCurrentJob(), 3)); |
| 429 | |
| 430 | // Task is not done yet, add it to beginning of the queue again |
| 431 | if ($response->isRunning()) { |
| 432 | $className = get_class($this->currentTask); |
| 433 | } |
| 434 | |
| 435 | try { |
| 436 | if (!$response->isRunning()) { |
| 437 | $this->jobDataDto->moveToNextTask(); |
| 438 | } |
| 439 | } catch (FinishedQueueException $e) { |
| 440 | $this->jobDataDto->setFinished(true); |
| 441 | |
| 442 | return $response; |
| 443 | } |
| 444 | |
| 445 | $response->setIsRunning(true); |
| 446 | |
| 447 | return $response; |
| 448 | } |
| 449 | |
| 450 | private function findCurrentJob() |
| 451 | { |
| 452 | $class = explode('\\', static::class); |
| 453 | |
| 454 | return end($class); |
| 455 | } |
| 456 | |
| 457 | protected function addTasks(array $tasks = []) |
| 458 | { |
| 459 | $this->jobDataDto->setTaskQueue($tasks); |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * @return string Formatted date string |
| 464 | */ |
| 465 | private function getFormattedDate() |
| 466 | { |
| 467 | return current_time(Logger::LOG_DATETIME_FORMAT); |
| 468 | } |
| 469 | } |
| 470 |