WP_Background_Job_Handler.php
771 lines
| 1 | <?php |
| 2 | /** |
| 3 | * WooCommerce Plugin Framework |
| 4 | * |
| 5 | * This source file is subject to the GNU General Public License v3.0 |
| 6 | * that is bundled with this package in the file license.txt. |
| 7 | * It is also available through the world-wide-web at this URL: |
| 8 | * http://www.gnu.org/licenses/gpl-3.0.html GNU General Public License v3.0 or later |
| 9 | * If you did not receive a copy of the license and are unable to |
| 10 | * obtain it through the world-wide-web, please send an email |
| 11 | * to license@skyverge.com so we can send you a copy immediately. |
| 12 | * |
| 13 | * @since 3.0.0 |
| 14 | * @author WooCommerce / SkyVerge / Delicious Brains |
| 15 | * @copyright Copyright (c) 2021-2022 WooCommerce. |
| 16 | * @copyright Copyright (c) 2015-2016 Delicious Brains Inc. |
| 17 | * @copyright Copyright (c) 2013-2019, SkyVerge, Inc. |
| 18 | * @license http://www.gnu.org/licenses/gpl-3.0.html GNU General Public License v3.0 or later |
| 19 | * |
| 20 | * Modified by WooCommerce on 01 December 2021. |
| 21 | */ |
| 22 | |
| 23 | namespace WooCommerce\Square\Framework\Utilities; |
| 24 | |
| 25 | use WooCommerce\Square\Framework\Plugin_Compatibility; |
| 26 | |
| 27 | defined( 'ABSPATH' ) or exit; |
| 28 | |
| 29 | /** |
| 30 | * Square WordPress Background Job Handler class |
| 31 | * |
| 32 | * Based on the wonderful WP_Background_Process class by deliciousbrains: |
| 33 | * https://github.com/A5hleyRich/wp-background-processing |
| 34 | * |
| 35 | * Subclasses SV_WP_Async_Request. Instead of the concept of `batches` used in |
| 36 | * the Delicious Brains' version, however, this takes a more object-oriented approach |
| 37 | * of background `jobs`, allowing greater control over manipulating job data and |
| 38 | * processing. |
| 39 | * |
| 40 | * A batch implicitly expected an array of items to process, whereas a job does |
| 41 | * not expect any particular data structure (although it does default to |
| 42 | * looping over job data) and allows subclasses to provide their own |
| 43 | * processing logic. |
| 44 | * |
| 45 | * @since 3.0.0 |
| 46 | */ |
| 47 | abstract class Background_Job_Handler { |
| 48 | |
| 49 | |
| 50 | /** @var string async request prefix */ |
| 51 | protected $prefix = 'sv_wp'; |
| 52 | |
| 53 | /** @var string async request action */ |
| 54 | protected $action = 'background_job'; |
| 55 | |
| 56 | /** @var string data key */ |
| 57 | protected $data_key = 'data'; |
| 58 | |
| 59 | /** @var int start time of current process */ |
| 60 | protected $start_time = 0; |
| 61 | |
| 62 | /** @var string cron hook identifier */ |
| 63 | protected $cron_hook_identifier; |
| 64 | |
| 65 | /** @var string cron interval identifier */ |
| 66 | protected $cron_interval_identifier; |
| 67 | |
| 68 | /** @var string debug message, used by the system status tool */ |
| 69 | protected $debug_message; |
| 70 | |
| 71 | |
| 72 | /** |
| 73 | * Initiate new background job handler |
| 74 | * |
| 75 | * @since 3.0.0 |
| 76 | */ |
| 77 | public function __construct() { |
| 78 | |
| 79 | $this->identifier = $this->prefix . '_' . $this->action; |
| 80 | $this->cron_hook_identifier = $this->identifier . '_cron'; |
| 81 | $this->cron_interval_identifier = $this->identifier . '_cron_interval'; |
| 82 | |
| 83 | $this->add_hooks(); |
| 84 | } |
| 85 | |
| 86 | |
| 87 | /** |
| 88 | * Adds the necessary action and filter hooks. |
| 89 | * |
| 90 | * @since 3.0.0 |
| 91 | */ |
| 92 | protected function add_hooks() { |
| 93 | |
| 94 | // cron healthcheck |
| 95 | add_filter( 'cron_schedules', array( $this, 'schedule_cron_healthcheck' ) ); |
| 96 | |
| 97 | // debugging & testing |
| 98 | add_filter( 'gettext', array( $this, 'translate_success_message' ), 10, 3 ); |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Check whether job queue is empty or not |
| 103 | * |
| 104 | * @since 3.0.0 |
| 105 | * @return bool True if queue is empty, false otherwise |
| 106 | */ |
| 107 | protected function is_queue_empty() { |
| 108 | global $wpdb; |
| 109 | |
| 110 | $key = $this->identifier . '_job_%'; |
| 111 | |
| 112 | // only queued or processing jobs count |
| 113 | $queued = '%"status":"queued"%'; |
| 114 | $processing = '%"status":"processing"%'; |
| 115 | |
| 116 | $count = $wpdb->get_var( $wpdb->prepare( " |
| 117 | SELECT COUNT(*) |
| 118 | FROM {$wpdb->options} |
| 119 | WHERE option_name LIKE %s |
| 120 | AND ( option_value LIKE %s OR option_value LIKE %s ) |
| 121 | ", $key, $queued, $processing ) ); |
| 122 | |
| 123 | return ( $count > 0 ) ? false : true; |
| 124 | } |
| 125 | |
| 126 | |
| 127 | /** |
| 128 | * Check whether background process is running or not |
| 129 | * |
| 130 | * Check whether the current process is already running |
| 131 | * in a background process. |
| 132 | * |
| 133 | * @since 3.0.0 |
| 134 | * @return bool True if processing is running, false otherwise |
| 135 | */ |
| 136 | protected function is_process_running() { |
| 137 | |
| 138 | // add a random artificial delay to prevent a race condition if 2 or more processes are trying to |
| 139 | // process the job queue at the very same moment in time and neither of them have yet set the lock |
| 140 | // before the others are calling this method |
| 141 | usleep( rand( 100000, 300000 ) ); |
| 142 | |
| 143 | return (bool) get_transient( "{$this->identifier}_process_lock" ); |
| 144 | } |
| 145 | |
| 146 | |
| 147 | /** |
| 148 | * Lock process |
| 149 | * |
| 150 | * Lock the process so that multiple instances can't run simultaneously. |
| 151 | * Override if applicable, but the duration should be greater than that |
| 152 | * defined in the time_exceeded() method. |
| 153 | * |
| 154 | * @since 3.0.0 |
| 155 | */ |
| 156 | protected function lock_process() { |
| 157 | |
| 158 | // set start time of current process |
| 159 | $this->start_time = time(); |
| 160 | |
| 161 | // set lock duration to 1 minute by default |
| 162 | $lock_duration = ( property_exists( $this, 'queue_lock_time' ) ) ? $this->queue_lock_time : 60; |
| 163 | |
| 164 | /** |
| 165 | * Filter the queue lock time |
| 166 | * |
| 167 | * @since 3.0.0 |
| 168 | * @param int $lock_duration Lock duration in seconds |
| 169 | */ |
| 170 | $lock_duration = apply_filters( "{$this->identifier}_queue_lock_time", $lock_duration ); |
| 171 | |
| 172 | set_transient( "{$this->identifier}_process_lock", microtime(), $lock_duration ); |
| 173 | } |
| 174 | |
| 175 | |
| 176 | /** |
| 177 | * Unlock process |
| 178 | * |
| 179 | * Unlock the process so that other instances can spawn. |
| 180 | * |
| 181 | * @since 3.0.0 |
| 182 | * @return WP_Background_Job_Handler |
| 183 | */ |
| 184 | protected function unlock_process() { |
| 185 | |
| 186 | delete_transient( "{$this->identifier}_process_lock" ); |
| 187 | |
| 188 | return $this; |
| 189 | } |
| 190 | |
| 191 | |
| 192 | /** |
| 193 | * Check if memory limit is exceeded |
| 194 | * |
| 195 | * Ensures the background job handler process never exceeds 90% |
| 196 | * of the maximum WordPress memory. |
| 197 | * |
| 198 | * @since 3.0.0 |
| 199 | * |
| 200 | * @return bool True if exceeded memory limit, false otherwise |
| 201 | */ |
| 202 | protected function memory_exceeded() { |
| 203 | |
| 204 | $memory_limit = $this->get_memory_limit() * 0.9; // 90% of max memory |
| 205 | $current_memory = memory_get_usage( true ); |
| 206 | $return = false; |
| 207 | |
| 208 | if ( $current_memory >= $memory_limit ) { |
| 209 | $return = true; |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Filter whether memory limit has been exceeded or not |
| 214 | * |
| 215 | * @since 3.0.0 |
| 216 | * |
| 217 | * @param bool $exceeded |
| 218 | */ |
| 219 | return apply_filters( "{$this->identifier}_memory_exceeded", $return ); |
| 220 | } |
| 221 | |
| 222 | |
| 223 | /** |
| 224 | * Get memory limit |
| 225 | * |
| 226 | * @since 3.0.0 |
| 227 | * |
| 228 | * @return int memory limit in bytes |
| 229 | */ |
| 230 | protected function get_memory_limit() { |
| 231 | |
| 232 | if ( function_exists( 'ini_get' ) ) { |
| 233 | $memory_limit = ini_get( 'memory_limit' ); |
| 234 | } else { |
| 235 | // sensible default |
| 236 | $memory_limit = '128M'; |
| 237 | } |
| 238 | |
| 239 | if ( ! $memory_limit || -1 === (int) $memory_limit ) { |
| 240 | // unlimited, set to 32GB |
| 241 | $memory_limit = '32G'; |
| 242 | } |
| 243 | |
| 244 | return Plugin_Compatibility::convert_hr_to_bytes( $memory_limit ); |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * Create a background job |
| 249 | * |
| 250 | * Delicious Brains' versions alternative would be using ->data()->save(). |
| 251 | * Allows passing in any kind of job attributes, which will be available at item data processing time. |
| 252 | * This allows sharing common options between items without the need to repeat |
| 253 | * the same information for every single item in queue. |
| 254 | * |
| 255 | * Instead of returning self, returns the job instance, which gives greater |
| 256 | * control over the job. |
| 257 | * |
| 258 | * @since 3.0.0 |
| 259 | * |
| 260 | * @param array|mixed $attrs Job attributes. |
| 261 | * @return \stdClass|object|null |
| 262 | */ |
| 263 | public function create_job( $attrs ) { |
| 264 | global $wpdb; |
| 265 | |
| 266 | if ( empty( $attrs ) ) { |
| 267 | return null; |
| 268 | } |
| 269 | |
| 270 | // generate a unique ID for the job |
| 271 | $job_id = md5( microtime() . mt_rand() ); |
| 272 | |
| 273 | /** |
| 274 | * Filter new background job attributes |
| 275 | * |
| 276 | * @since 3.0.0 |
| 277 | * |
| 278 | * @param array $attrs Job attributes |
| 279 | * @param string $id Job ID |
| 280 | */ |
| 281 | $attrs = apply_filters( "{$this->identifier}_new_job_attrs", $attrs, $job_id ); |
| 282 | |
| 283 | // ensure a few must-have attributes |
| 284 | $attrs = wp_parse_args( array( |
| 285 | 'id' => $job_id, |
| 286 | 'created_at' => current_time( 'mysql' ), |
| 287 | 'created_by' => get_current_user_id(), |
| 288 | 'status' => 'queued', |
| 289 | ), $attrs ); |
| 290 | |
| 291 | $wpdb->insert( $wpdb->options, array( |
| 292 | 'option_name' => "{$this->identifier}_job_{$job_id}", |
| 293 | 'option_value' => wp_json_encode( $attrs ), |
| 294 | 'autoload' => 'no' |
| 295 | ) ); |
| 296 | |
| 297 | $job = new \stdClass(); |
| 298 | |
| 299 | foreach ( $attrs as $key => $value ) { |
| 300 | $job->{$key} = $value; |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * Runs when a job is created. |
| 305 | * |
| 306 | * @since 3.0.0 |
| 307 | * |
| 308 | * @param \stdClass|object $job the created job |
| 309 | */ |
| 310 | do_action( "{$this->identifier}_job_created", $job ); |
| 311 | |
| 312 | return $job; |
| 313 | } |
| 314 | |
| 315 | |
| 316 | /** |
| 317 | * Get a job (by default the first in the queue) |
| 318 | * |
| 319 | * @since 3.0.0 |
| 320 | * |
| 321 | * @param string $id Optional. Job ID. Will return first job in queue if not |
| 322 | * provided. Will not return completed or failed jobs from queue. |
| 323 | * @return \stdClass|object|null The found job object or null |
| 324 | */ |
| 325 | public function get_job( $id = null ) { |
| 326 | global $wpdb; |
| 327 | |
| 328 | if ( ! $id ) { |
| 329 | |
| 330 | $key = $this->identifier . '_job_%'; |
| 331 | $queued = '%"status":"queued"%'; |
| 332 | $processing = '%"status":"processing"%'; |
| 333 | |
| 334 | $results = $wpdb->get_var( $wpdb->prepare( " |
| 335 | SELECT option_value |
| 336 | FROM {$wpdb->options} |
| 337 | WHERE option_name LIKE %s |
| 338 | AND ( option_value LIKE %s OR option_value LIKE %s ) |
| 339 | ORDER BY option_id ASC |
| 340 | LIMIT 1 |
| 341 | ", $key, $queued, $processing ) ); |
| 342 | |
| 343 | } else { |
| 344 | |
| 345 | $results = $wpdb->get_var( $wpdb->prepare( " |
| 346 | SELECT option_value |
| 347 | FROM {$wpdb->options} |
| 348 | WHERE option_name = %s |
| 349 | ", "{$this->identifier}_job_{$id}" ) ); |
| 350 | |
| 351 | } |
| 352 | |
| 353 | if ( ! empty( $results ) ) { |
| 354 | |
| 355 | $job = new \stdClass(); |
| 356 | |
| 357 | foreach ( json_decode( $results, true ) as $key => $value ) { |
| 358 | $job->{$key} = $value; |
| 359 | } |
| 360 | |
| 361 | } else { |
| 362 | return null; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Filters the job as returned from the database. |
| 367 | * |
| 368 | * @since 3.0.0 |
| 369 | * |
| 370 | * @param \stdClass|object $job |
| 371 | */ |
| 372 | return apply_filters( "{$this->identifier}_returned_job", $job ); |
| 373 | } |
| 374 | |
| 375 | |
| 376 | /** |
| 377 | * Gets jobs. |
| 378 | * |
| 379 | * @since 3.0.0 |
| 380 | * |
| 381 | * @param array $args { |
| 382 | * Optional. An array of arguments |
| 383 | * |
| 384 | * @type string|array $status Job status(es) to include |
| 385 | * @type string $order ASC or DESC. Defaults to DESC |
| 386 | * @type string $orderby Field to order by. Defaults to option_id |
| 387 | * } |
| 388 | * @return \stdClass[]|object[]|null Found jobs or null if none found |
| 389 | */ |
| 390 | public function get_jobs( $args = array() ) { |
| 391 | global $wpdb; |
| 392 | |
| 393 | $args = wp_parse_args( $args, array( |
| 394 | 'order' => 'DESC', |
| 395 | 'orderby' => 'option_id', |
| 396 | ) ); |
| 397 | |
| 398 | $replacements = array( $this->identifier . '_job_%' ); |
| 399 | $status_query = ''; |
| 400 | |
| 401 | // prepare status query |
| 402 | if ( ! empty( $args['status'] ) ) { |
| 403 | |
| 404 | $statuses = (array) $args['status']; |
| 405 | $placeholders = array(); |
| 406 | |
| 407 | foreach ( $statuses as $status ) { |
| 408 | |
| 409 | $placeholders[] = '%s'; |
| 410 | $replacements[] = '%"status":"' . sanitize_key( $status ) . '"%'; |
| 411 | } |
| 412 | |
| 413 | $status_query = 'AND ( option_value LIKE ' . implode( ' OR option_value LIKE ', $placeholders ) . ' )'; |
| 414 | } |
| 415 | |
| 416 | // prepare sorting vars |
| 417 | $order = sanitize_key( $args['order'] ); |
| 418 | $orderby = sanitize_key( $args['orderby'] ); |
| 419 | |
| 420 | // put it all together now |
| 421 | $query = $wpdb->prepare( " |
| 422 | SELECT option_value |
| 423 | FROM {$wpdb->options} |
| 424 | WHERE option_name LIKE %s |
| 425 | {$status_query} |
| 426 | ORDER BY {$orderby} {$order} |
| 427 | ", $replacements ); |
| 428 | |
| 429 | $results = $wpdb->get_col( $query ); |
| 430 | |
| 431 | if ( empty( $results ) ) { |
| 432 | return null; |
| 433 | } |
| 434 | |
| 435 | $jobs = array(); |
| 436 | |
| 437 | foreach ( $results as $result ) { |
| 438 | |
| 439 | $job = new \stdClass(); |
| 440 | |
| 441 | foreach ( json_decode( $result, true ) as $key => $value ) { |
| 442 | $job->{$key} = $value; |
| 443 | } |
| 444 | |
| 445 | /** This filter is documented above */ |
| 446 | $job = apply_filters( "{$this->identifier}_returned_job", $job ); |
| 447 | |
| 448 | $jobs[] = $job; |
| 449 | } |
| 450 | |
| 451 | return $jobs; |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Update job attrs |
| 456 | * |
| 457 | * @since 3.0.0 |
| 458 | * |
| 459 | * @param \stdClass|object|string $job Job instance or ID |
| 460 | * @return \stdClass|object|false on failure |
| 461 | */ |
| 462 | public function update_job( $job ) { |
| 463 | |
| 464 | if ( is_string( $job ) ) { |
| 465 | $job = $this->get_job( $job ); |
| 466 | } |
| 467 | |
| 468 | if ( ! $job ) { |
| 469 | return false; |
| 470 | } |
| 471 | |
| 472 | $job->updated_at = current_time( 'mysql' ); |
| 473 | |
| 474 | $this->update_job_option( $job ); |
| 475 | |
| 476 | /** |
| 477 | * Runs when a job is updated. |
| 478 | * |
| 479 | * @since 3.0.0 |
| 480 | * |
| 481 | * @param \stdClass|object $job the updated job |
| 482 | */ |
| 483 | do_action( "{$this->identifier}_job_updated", $job ); |
| 484 | |
| 485 | return $job; |
| 486 | } |
| 487 | |
| 488 | |
| 489 | /** |
| 490 | * Handles job completion. |
| 491 | * |
| 492 | * @since 3.0.0 |
| 493 | * |
| 494 | * @param \stdClass|object|string $job Job instance or ID |
| 495 | * @return \stdClass|object|false on failure |
| 496 | */ |
| 497 | public function complete_job( $job ) { |
| 498 | |
| 499 | if ( is_string( $job ) ) { |
| 500 | $job = $this->get_job( $job ); |
| 501 | } |
| 502 | |
| 503 | if ( ! $job ) { |
| 504 | return false; |
| 505 | } |
| 506 | |
| 507 | $job->status = 'completed'; |
| 508 | $job->completed_at = current_time( 'mysql' ); |
| 509 | |
| 510 | $this->update_job_option( $job ); |
| 511 | |
| 512 | /** |
| 513 | * Runs when a job is completed. |
| 514 | * |
| 515 | * @since 3.0.0 |
| 516 | * |
| 517 | * @param \stdClass|object $job the completed job |
| 518 | */ |
| 519 | do_action( "{$this->identifier}_job_complete", $job ); |
| 520 | |
| 521 | return $job; |
| 522 | } |
| 523 | |
| 524 | |
| 525 | /** |
| 526 | * Handle job failure |
| 527 | * |
| 528 | * Default implementation does not call this method directly, but it's |
| 529 | * provided as a convenience method for subclasses that may call this to |
| 530 | * indicate that a particular job has failed for some reason. |
| 531 | * |
| 532 | * @since 3.0.0 |
| 533 | * |
| 534 | * @param \stdClass|object|string $job Job instance or ID |
| 535 | * @param string $reason Optional. Reason for failure. |
| 536 | * @return \stdClass|false on failure |
| 537 | */ |
| 538 | public function fail_job( $job, $reason = '' ) { |
| 539 | |
| 540 | if ( is_string( $job ) ) { |
| 541 | $job = $this->get_job( $job ); |
| 542 | } |
| 543 | |
| 544 | if ( ! $job ) { |
| 545 | return false; |
| 546 | } |
| 547 | |
| 548 | $job->status = 'failed'; |
| 549 | $job->failed_at = current_time( 'mysql' ); |
| 550 | |
| 551 | if ( $reason ) { |
| 552 | $job->failure_reason = $reason; |
| 553 | } |
| 554 | |
| 555 | $this->update_job_option( $job ); |
| 556 | |
| 557 | /** |
| 558 | * Runs when a job is failed. |
| 559 | * |
| 560 | * @since 3.0.0 |
| 561 | * |
| 562 | * @param \stdClass|object $job the failed job |
| 563 | */ |
| 564 | do_action( "{$this->identifier}_job_failed", $job ); |
| 565 | |
| 566 | return $job; |
| 567 | } |
| 568 | |
| 569 | |
| 570 | /** |
| 571 | * Delete a job |
| 572 | * |
| 573 | * @since 3.0.0 |
| 574 | * |
| 575 | * @param \stdClass|object|string $job Job instance or ID |
| 576 | * @return false on failure |
| 577 | */ |
| 578 | public function delete_job( $job ) { |
| 579 | global $wpdb; |
| 580 | |
| 581 | if ( is_string( $job ) ) { |
| 582 | $job = $this->get_job( $job ); |
| 583 | } |
| 584 | |
| 585 | if ( ! $job ) { |
| 586 | return false; |
| 587 | } |
| 588 | |
| 589 | $wpdb->delete( $wpdb->options, array( 'option_name' => "{$this->identifier}_job_{$job->id}" ) ); |
| 590 | |
| 591 | /** |
| 592 | * Runs after a job is deleted. |
| 593 | * |
| 594 | * @since 3.0.0 |
| 595 | * |
| 596 | * @param \stdClass|object $job the job that was deleted from database |
| 597 | */ |
| 598 | do_action( "{$this->identifier}_job_deleted", $job ); |
| 599 | } |
| 600 | |
| 601 | |
| 602 | /** |
| 603 | * Handle job queue completion |
| 604 | * |
| 605 | * Override if applicable, but ensure that the below actions are |
| 606 | * performed, or, call parent::complete(). |
| 607 | * |
| 608 | * @since 3.0.0 |
| 609 | */ |
| 610 | protected function complete() { |
| 611 | |
| 612 | // unschedule the cron healthcheck |
| 613 | $this->clear_scheduled_event(); |
| 614 | } |
| 615 | |
| 616 | |
| 617 | /** |
| 618 | * Schedule cron healthcheck |
| 619 | * |
| 620 | * @since 3.0.0 |
| 621 | * @param array $schedules |
| 622 | * @return array |
| 623 | */ |
| 624 | public function schedule_cron_healthcheck( $schedules ) { |
| 625 | |
| 626 | $interval = property_exists( $this, 'cron_interval' ) ? $this->cron_interval : 5; |
| 627 | |
| 628 | /** |
| 629 | * Filter cron health check interval |
| 630 | * |
| 631 | * @since 3.0.0 |
| 632 | * @param int $interval Interval in minutes |
| 633 | */ |
| 634 | $interval = apply_filters( "{$this->identifier}_cron_interval", $interval ); |
| 635 | |
| 636 | // adds every 5 minutes to the existing schedules. |
| 637 | $schedules[ $this->identifier . '_cron_interval' ] = array( |
| 638 | 'interval' => MINUTE_IN_SECONDS * $interval, |
| 639 | 'display' => sprintf( esc_html__( 'Every %d Minutes', 'woocommerce-square' ), $interval ), |
| 640 | ); |
| 641 | |
| 642 | return $schedules; |
| 643 | } |
| 644 | |
| 645 | /** |
| 646 | * Schedule cron health check event |
| 647 | * |
| 648 | * @since 3.0.0 |
| 649 | */ |
| 650 | protected function schedule_event() { |
| 651 | |
| 652 | if ( ! wp_next_scheduled( $this->cron_hook_identifier ) ) { |
| 653 | |
| 654 | // schedule the health check to fire after 30 seconds from now, as to not create a race condition |
| 655 | // with job process lock on servers that fire & handle cron events instantly |
| 656 | wp_schedule_event( time() + 30, $this->cron_interval_identifier, $this->cron_hook_identifier ); |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | |
| 661 | /** |
| 662 | * Clear scheduled health check event |
| 663 | * |
| 664 | * @since 3.0.0 |
| 665 | */ |
| 666 | protected function clear_scheduled_event() { |
| 667 | |
| 668 | $timestamp = wp_next_scheduled( $this->cron_hook_identifier ); |
| 669 | |
| 670 | if ( $timestamp ) { |
| 671 | wp_unschedule_event( $timestamp, $this->cron_hook_identifier ); |
| 672 | } |
| 673 | } |
| 674 | |
| 675 | |
| 676 | /** |
| 677 | * Process an item from job data |
| 678 | * |
| 679 | * Implement this method to perform any actions required on each |
| 680 | * item in job data. |
| 681 | * |
| 682 | * @since 3.0.0 |
| 683 | * |
| 684 | * @param mixed $item Job data item to iterate over |
| 685 | * @param \stdClass|object $job Job instance |
| 686 | * @return mixed |
| 687 | */ |
| 688 | abstract protected function process_item( $item, $job ); |
| 689 | |
| 690 | |
| 691 | /** |
| 692 | * Handles PHP shutdown, say after a fatal error. |
| 693 | * |
| 694 | * @since 3.0.0 |
| 695 | * |
| 696 | * @param \stdClass|object $job the job being processed |
| 697 | */ |
| 698 | public function handle_shutdown( $job ) { |
| 699 | |
| 700 | $error = error_get_last(); |
| 701 | |
| 702 | // if shutting down because of a fatal error, fail the job |
| 703 | if ( $error && E_ERROR === $error['type'] ) { |
| 704 | |
| 705 | $this->fail_job( $job, $error['message'] ); |
| 706 | |
| 707 | $this->unlock_process(); |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | |
| 712 | /** |
| 713 | * Update a job option in options database. |
| 714 | * |
| 715 | * @since 3.0.0 |
| 716 | * |
| 717 | * @param \stdClass|object $job the job instance to update in database |
| 718 | * @return int|bool number of rows updated or false on failure, see wpdb::update() |
| 719 | */ |
| 720 | private function update_job_option( $job ) { |
| 721 | global $wpdb; |
| 722 | |
| 723 | return $wpdb->update( |
| 724 | $wpdb->options, |
| 725 | array( 'option_value' => wp_json_encode( $job ) ), |
| 726 | array( 'option_name' => "{$this->identifier}_job_{$job->id}" ) |
| 727 | ); |
| 728 | } |
| 729 | |
| 730 | |
| 731 | /** Debug & Testing Methods ***********************************************/ |
| 732 | |
| 733 | /** |
| 734 | * Translate the tool success message. |
| 735 | * |
| 736 | * This can be removed in favor of returning the message string in `run_debug_tool()` |
| 737 | * when WC 3.1 is required, though that means the message will always be "success" styled. |
| 738 | * |
| 739 | * @since 3.0.0 |
| 740 | * |
| 741 | * @param string $translated the text to output |
| 742 | * @param string $original the original text |
| 743 | * @param string $domain the textdomain |
| 744 | * @return string the updated text |
| 745 | */ |
| 746 | public function translate_success_message( $translated, $original, $domain ) { |
| 747 | |
| 748 | if ( 'woocommerce' === $domain && ( 'Tool ran.' === $original || 'There was an error calling %s' === $original ) ) { |
| 749 | $translated = $this->debug_message; |
| 750 | } |
| 751 | |
| 752 | return $translated; |
| 753 | } |
| 754 | |
| 755 | |
| 756 | /** Helper Methods ********************************************************/ |
| 757 | |
| 758 | |
| 759 | /** |
| 760 | * Gets the job handler identifier. |
| 761 | * |
| 762 | * @since 3.0.0 |
| 763 | * |
| 764 | * @return string |
| 765 | */ |
| 766 | public function get_identifier() { |
| 767 | |
| 768 | return $this->identifier; |
| 769 | } |
| 770 | } |
| 771 |