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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Settings; |
| 4 | |
| 5 | use BagOStuff; |
| 6 | use ExtensionRegistry; |
| 7 | use MediaWiki\Config\Config; |
| 8 | use MediaWiki\Config\HashConfig; |
| 9 | use MediaWiki\Config\IterableConfig; |
| 10 | use MediaWiki\HookContainer\HookContainer; |
| 11 | use MediaWiki\MainConfigNames; |
| 12 | use MediaWiki\Settings\Cache\CacheableSource; |
| 13 | use MediaWiki\Settings\Cache\CachedSource; |
| 14 | use MediaWiki\Settings\Config\ConfigBuilder; |
| 15 | use MediaWiki\Settings\Config\ConfigSchema; |
| 16 | use MediaWiki\Settings\Config\ConfigSchemaAggregator; |
| 17 | use MediaWiki\Settings\Config\GlobalConfigBuilder; |
| 18 | use MediaWiki\Settings\Config\PhpIniSink; |
| 19 | use MediaWiki\Settings\Source\ArraySource; |
| 20 | use MediaWiki\Settings\Source\FileSource; |
| 21 | use MediaWiki\Settings\Source\SettingsFileUtils; |
| 22 | use MediaWiki\Settings\Source\SettingsIncludeLocator; |
| 23 | use MediaWiki\Settings\Source\SettingsSource; |
| 24 | use RuntimeException; |
| 25 | use StatusValue; |
| 26 | use function array_key_exists; |
| 27 | |
| 28 | /** |
| 29 | * Builder class for constructing a Config object from a set of sources |
| 30 | * during bootstrap. The SettingsBuilder is used in Setup.php to load |
| 31 | * and combine settings files and eventually produce the Config object that |
| 32 | * will be used to configure MediaWiki. |
| 33 | * |
| 34 | * The SettingsBuilder object keeps track of "stages" of initialization that |
| 35 | * correspond to sections of Setup.php: |
| 36 | * |
| 37 | * The initial stage is "loading". In this stage, SettingsSources are added |
| 38 | * to the SettingsBuilder using the load* methods. This sets up the config |
| 39 | * schema and applies custom configuration values. |
| 40 | * |
| 41 | * Once all settings sources have been loaded, the SettingsBuilder is moved to the |
| 42 | * "registration" stage by calling enterRegistrationStage(). |
| 43 | * In this stage, config values may still be altered, but no settings sources may |
| 44 | * be loaded. During the "registration" stage, dynamic defaults are applied, |
| 45 | * extension registration callbacks are executed, and maintenance scripts have an |
| 46 | * opportunity to manipulate settings. |
| 47 | * |
| 48 | * Finally, the SettingsBuilder is moved to the "operation" stage by calling |
| 49 | * enterOperationStage(). This renders the SettingsBuilder read only: config values |
| 50 | * may no longer be changed. At this point, it becomes safe to use the Config object |
| 51 | * returned by getConfig() to initialize the service container. |
| 52 | * |
| 53 | * @since 1.38 |
| 54 | */ |
| 55 | class SettingsBuilder { |
| 56 | |
| 57 | /** |
| 58 | * @var int The initial stage in which settings can be loaded, |
| 59 | * but config values cannot be accessed. |
| 60 | */ |
| 61 | private const STAGE_LOADING = 1; |
| 62 | |
| 63 | /** |
| 64 | * @var int The intermediate stage in which settings can no longer be loaded, |
| 65 | * but config values can be accessed and manipulated programmatically. |
| 66 | */ |
| 67 | private const STAGE_REGISTRATION = 10; |
| 68 | |
| 69 | /** |
| 70 | * @var int The final stage in which config values can be accessed, but can |
| 71 | * no longer be changed. |
| 72 | */ |
| 73 | private const STAGE_READ_ONLY = 100; |
| 74 | |
| 75 | /** @var string */ |
| 76 | private $baseDir; |
| 77 | |
| 78 | /** @var ExtensionRegistry */ |
| 79 | private $extensionRegistry; |
| 80 | |
| 81 | /** @var BagOStuff */ |
| 82 | private $cache; |
| 83 | |
| 84 | /** @var ConfigBuilder */ |
| 85 | private $configSink; |
| 86 | |
| 87 | /** @var array<string,string> */ |
| 88 | private $obsoleteConfig; |
| 89 | |
| 90 | /** @var Config|null */ |
| 91 | private $config; |
| 92 | |
| 93 | /** @var SettingsSource[] */ |
| 94 | private $currentBatch; |
| 95 | |
| 96 | /** @var ConfigSchemaAggregator */ |
| 97 | private $configSchema; |
| 98 | |
| 99 | /** @var PhpIniSink */ |
| 100 | private $phpIniSink; |
| 101 | |
| 102 | /** |
| 103 | * Configuration that applies to SettingsBuilder itself. |
| 104 | * Initialized by the constructor, may be overwritten by regular |
| 105 | * config values. Merge strategies are currently not implemented |
| 106 | * but can be added if needed. |
| 107 | * |
| 108 | * @var array |
| 109 | */ |
| 110 | private $settingsConfig; |
| 111 | |
| 112 | /** |
| 113 | * The stage of the settings builder. This is used to determine |
| 114 | * which settings are allowed to be changed. |
| 115 | * |
| 116 | * @var int see self::STAGE_* |
| 117 | */ |
| 118 | private $stage = self::STAGE_LOADING; |
| 119 | |
| 120 | /** |
| 121 | * Whether we have to apply reverse-merging when applying defaults. |
| 122 | * This will initially be false, and become true once any config settings have been |
| 123 | * assigned a value. |
| 124 | * |
| 125 | * This is used as an optimization, to avoid costly merge logic when loading initial |
| 126 | * defaults before any config variables have been set. |
| 127 | * |
| 128 | * @var bool |
| 129 | */ |
| 130 | private $defaultsNeedMerging = false; |
| 131 | |
| 132 | /** @var string[] */ |
| 133 | private $warnings = []; |
| 134 | |
| 135 | private static bool $accessDisabledForUnitTests = false; |
| 136 | |
| 137 | /** |
| 138 | * Accessor for the global SettingsBuilder instance. |
| 139 | * |
| 140 | * @note It is always preferable to have a SettingsBuilder injected! |
| 141 | * But as long as we can't to this everywhere, this is the preferred way of |
| 142 | * getting the global instance of SettingsBuilder. |
| 143 | * |
| 144 | * @return SettingsBuilder |
| 145 | */ |
| 146 | public static function getInstance(): self { |
| 147 | static $instance = null; |
| 148 | |
| 149 | if ( self::$accessDisabledForUnitTests ) { |
| 150 | throw new RuntimeException( 'Access is disabled in unit tests' ); |
| 151 | } |
| 152 | |
| 153 | if ( !$instance ) { |
| 154 | // NOTE: SettingsBuilder is used during bootstrap, before MediaWikiServices |
| 155 | // is available. It has to be, because it is used to construct the |
| 156 | // configuration that is used when constructing services. Because of |
| 157 | // this, we have to instantiate SettingsBuilder directly, we can't |
| 158 | // use service wiring. |
| 159 | $instance = new SettingsBuilder( |
| 160 | MW_INSTALL_PATH, |
| 161 | ExtensionRegistry::getInstance(), |
| 162 | new GlobalConfigBuilder( 'wg' ), |
| 163 | new PhpIniSink() |
| 164 | ); |
| 165 | } |
| 166 | |
| 167 | return $instance; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * @internal |
| 172 | */ |
| 173 | public static function disableAccessForUnitTests(): void { |
| 174 | if ( !defined( 'MW_PHPUNIT_TEST' ) ) { |
| 175 | throw new RuntimeException( 'Can only be called in tests' ); |
| 176 | } |
| 177 | self::$accessDisabledForUnitTests = true; |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * @internal |
| 182 | */ |
| 183 | public static function enableAccessAfterUnitTests(): void { |
| 184 | if ( !defined( 'MW_PHPUNIT_TEST' ) ) { |
| 185 | throw new RuntimeException( 'Can only be called in tests' ); |
| 186 | } |
| 187 | self::$accessDisabledForUnitTests = false; |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * @param string $baseDir |
| 192 | * @param ExtensionRegistry $extensionRegistry |
| 193 | * @param ConfigBuilder $configSink |
| 194 | * @param PhpIniSink $phpIniSink |
| 195 | * @param BagOStuff|null $cache BagOStuff used to cache settings loaded |
| 196 | * from each source. The caller should beware that secrets contained in |
| 197 | * any source passed to {@link load} or {@link loadFile} will be cached as |
| 198 | * well. |
| 199 | */ |
| 200 | public function __construct( |
| 201 | string $baseDir, |
| 202 | ExtensionRegistry $extensionRegistry, |
| 203 | ConfigBuilder $configSink, |
| 204 | PhpIniSink $phpIniSink, |
| 205 | BagOStuff $cache = null |
| 206 | ) { |
| 207 | $this->baseDir = $baseDir; |
| 208 | $this->extensionRegistry = $extensionRegistry; |
| 209 | $this->cache = $cache; |
| 210 | $this->configSink = $configSink; |
| 211 | $this->obsoleteConfig = []; |
| 212 | $this->configSchema = new ConfigSchemaAggregator(); |
| 213 | $this->phpIniSink = $phpIniSink; |
| 214 | $this->settingsConfig = [ |
| 215 | MainConfigNames::ExtensionDirectory => "$baseDir/extensions", |
| 216 | MainConfigNames::StyleDirectory => "$baseDir/skins", |
| 217 | ]; |
| 218 | $this->reset(); |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Load settings from a {@link SettingsSource}. |
| 223 | * Only allowed during the "loading" stage. |
| 224 | * |
| 225 | * @param SettingsSource $source |
| 226 | * @return $this |
| 227 | */ |
| 228 | public function load( SettingsSource $source ): self { |
| 229 | $this->assertStillLoading( __METHOD__ ); |
| 230 | |
| 231 | // XXX: We may want to cache the entire batch instead, see T304493. |
| 232 | $this->currentBatch[] = $this->wrapSource( $source ); |
| 233 | |
| 234 | return $this; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Load settings from an array. |
| 239 | * |
| 240 | * @param array $newSettings |
| 241 | * |
| 242 | * @return $this |
| 243 | */ |
| 244 | public function loadArray( array $newSettings ): self { |
| 245 | return $this->load( new ArraySource( $newSettings ) ); |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * Load settings from an array. |
| 250 | * For internal use. Allowed during "loading" and "registration" stage. |
| 251 | * |
| 252 | * @param array $newSettings |
| 253 | * @param string $func |
| 254 | * |
| 255 | * @return $this |
| 256 | */ |
| 257 | private function loadArrayInternal( array $newSettings, string $func ): self { |
| 258 | $this->assertNotReadOnly( $func ); |
| 259 | |
| 260 | $source = new ArraySource( $newSettings ); |
| 261 | $this->currentBatch[] = $this->wrapSource( $source ); |
| 262 | |
| 263 | return $this; |
| 264 | } |
| 265 | |
| 266 | /** |
| 267 | * Load settings from a file. |
| 268 | * |
| 269 | * @param string $path |
| 270 | * @return $this |
| 271 | */ |
| 272 | public function loadFile( string $path ): self { |
| 273 | return $this->load( $this->makeSource( $path ) ); |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Checks whether the given file exists relative to the settings builder's |
| 278 | * base directory. |
| 279 | * |
| 280 | * @param string $path |
| 281 | * @return bool |
| 282 | */ |
| 283 | public function fileExists( string $path ): bool { |
| 284 | $path = SettingsFileUtils::resolveRelativeLocation( $path, $this->baseDir ); |
| 285 | return file_exists( $path ); |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * @param SettingsSource $source |
| 290 | * |
| 291 | * @return SettingsSource |
| 292 | */ |
| 293 | private function wrapSource( SettingsSource $source ): SettingsSource { |
| 294 | if ( $this->cache !== null && $source instanceof CacheableSource ) { |
| 295 | $source = new CachedSource( $this->cache, $source ); |
| 296 | } |
| 297 | return $source; |
| 298 | } |
| 299 | |
| 300 | /** |
| 301 | * @param string $location |
| 302 | * @return SettingsSource |
| 303 | */ |
| 304 | private function makeSource( $location ): SettingsSource { |
| 305 | // NOTE: Currently, files are the only kind of location, but we could add others. |
| 306 | // The set of supported source locations will be hard-coded here. |
| 307 | // Custom SettingsSource would have to be instantiated directly and passed to load(). |
| 308 | $path = SettingsFileUtils::resolveRelativeLocation( $location, $this->baseDir ); |
| 309 | |
| 310 | return $this->wrapSource( new FileSource( $path ) ); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Assert that the config loaded so far conforms the schema loaded so far. |
| 315 | * |
| 316 | * @note this is slow, so you probably don't want to do this on every request. |
| 317 | * |
| 318 | * @return StatusValue |
| 319 | */ |
| 320 | public function validate(): StatusValue { |
| 321 | $config = $this->getConfig(); |
| 322 | return $this->configSchema->validateConfig( $config ); |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Detect usage of deprecated settings. A setting is counted as used if |
| 327 | * it has a value other than the default. Note that deprecated settings are |
| 328 | * expected to be supported. Settings that have become non-functional should |
| 329 | * be marked as obsolete instead. |
| 330 | * |
| 331 | * @note this is slow, so you probably don't want to do this on every request. |
| 332 | * @note Code that needs to call detectDeprecatedConfig() should probably also |
| 333 | * call detectObsoleteConfig() and getWarnings(). |
| 334 | * |
| 335 | * @return array<string,string> an associative array mapping config keys |
| 336 | * to the deprecation messages from the schema. |
| 337 | */ |
| 338 | public function detectDeprecatedConfig(): array { |
| 339 | $config = $this->getConfig(); |
| 340 | $keys = $this->getDefinedConfigKeys(); |
| 341 | $deprecated = []; |
| 342 | |
| 343 | foreach ( $keys as $key ) { |
| 344 | $sch = $this->configSchema->getSchemaFor( $key ); |
| 345 | if ( !isset( $sch['deprecated'] ) ) { |
| 346 | continue; |
| 347 | } |
| 348 | |
| 349 | $default = $sch['default'] ?? null; |
| 350 | $value = $config->get( $key ); |
| 351 | |
| 352 | if ( $value !== $default ) { |
| 353 | $deprecated[$key] = $sch['deprecated']; |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | return $deprecated; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Detect usage of obsolete settings. A setting is counted as used if it is |
| 362 | * defined in any way. Note that obsolete settings are non-functional, while |
| 363 | * deprecated settings are still supported. |
| 364 | * |
| 365 | * @note this is slow, so you probably don't want to do this on every request. |
| 366 | * @note Code that calls detectObsoleteConfig() may also want to |
| 367 | * call detectDeprecatedConfig() and getWarnings(). |
| 368 | * |
| 369 | * @return array<string,string> an associative array mapping config keys |
| 370 | * to the deprecation messages from the schema. |
| 371 | */ |
| 372 | public function detectObsoleteConfig(): array { |
| 373 | $config = $this->getConfig(); |
| 374 | $obsolete = []; |
| 375 | |
| 376 | foreach ( $this->obsoleteConfig as $key => $msg ) { |
| 377 | if ( $config->has( $key ) ) { |
| 378 | $obsolete[$key] = $msg; |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | return $obsolete; |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * Return a Config object with default for all settings from all schemas loaded so far. |
| 387 | * If the schema for a setting doesn't specify a default, null is assumed. |
| 388 | * |
| 389 | * @note This will implicitly call apply() |
| 390 | * |
| 391 | * @return IterableConfig |
| 392 | */ |
| 393 | public function getDefaultConfig(): IterableConfig { |
| 394 | $this->apply(); |
| 395 | $defaults = $this->configSchema->getDefaults(); |
| 396 | $nulls = array_fill_keys( $this->configSchema->getDefinedKeys(), null ); |
| 397 | |
| 398 | return new HashConfig( array_merge( $nulls, $defaults ) ); |
| 399 | } |
| 400 | |
| 401 | /** |
| 402 | * Return the configuration schema. |
| 403 | * |
| 404 | * @note This will implicitly call apply() |
| 405 | * |
| 406 | * @return ConfigSchema |
| 407 | */ |
| 408 | public function getConfigSchema(): ConfigSchema { |
| 409 | $this->apply(); |
| 410 | return $this->configSchema; |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Returns the names of all defined configuration variables |
| 415 | * |
| 416 | * @return string[] |
| 417 | */ |
| 418 | public function getDefinedConfigKeys(): array { |
| 419 | $this->apply(); |
| 420 | return $this->configSchema->getDefinedKeys(); |
| 421 | } |
| 422 | |
| 423 | /** |
| 424 | * Apply any settings loaded so far to the runtime environment. |
| 425 | * |
| 426 | * @note This usually makes all configuration available in global variables. |
| 427 | * This may however not be the case in the future. |
| 428 | * |
| 429 | * @return $this |
| 430 | * @throws SettingsBuilderException |
| 431 | */ |
| 432 | public function apply(): self { |
| 433 | if ( !$this->currentBatch ) { |
| 434 | return $this; |
| 435 | } |
| 436 | |
| 437 | $this->assertNotReadOnly( __METHOD__ ); |
| 438 | $this->config = null; |
| 439 | |
| 440 | // XXX: We may want to cache the entire batch after merging together |
| 441 | // settings from all sources, see T304493. |
| 442 | $allSettings = $this->loadRecursive( $this->currentBatch ); |
| 443 | |
| 444 | foreach ( $allSettings as $settings ) { |
| 445 | $this->applySettings( $settings ); |
| 446 | } |
| 447 | $this->reset(); |
| 448 | return $this; |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Loads all sources in the current batch, recursively resolving includes. |
| 453 | * |
| 454 | * @param SettingsSource[] $batch The batch of sources to load |
| 455 | * @param string[] $stack The current stack of includes, for cycle detection |
| 456 | * |
| 457 | * @return array[] an array of settings arrays |
| 458 | */ |
| 459 | private function loadRecursive( array $batch, array $stack = [] ): array { |
| 460 | $allSettings = []; |
| 461 | |
| 462 | // Depth-first traversal of settings sources. |
| 463 | foreach ( $batch as $source ) { |
| 464 | $sourceName = (string)$source; |
| 465 | |
| 466 | if ( in_array( $sourceName, $stack ) ) { |
| 467 | throw new SettingsBuilderException( |
| 468 | 'Recursive include chain detected: ' . implode( ', ', $stack ) |
| 469 | ); |
| 470 | } |
| 471 | |
| 472 | $settings = $source->load(); |
| 473 | $settings['source-name'] = $sourceName; |
| 474 | |
| 475 | $allSettings[] = $settings; |
| 476 | |
| 477 | $nextBatch = []; |
| 478 | foreach ( $settings['includes'] ?? [] as $location ) { |
| 479 | // Try to resolve the include relative to the source, |
| 480 | // if the source supports that. |
| 481 | if ( $source instanceof SettingsIncludeLocator ) { |
| 482 | $location = $source->locateInclude( $location ); |
| 483 | } |
| 484 | |
| 485 | $nextBatch[] = $this->makeSource( $location ); |
| 486 | } |
| 487 | |
| 488 | $nextStack = array_merge( $stack, [ $settings['source-name'] ] ); |
| 489 | $nextSettings = $this->loadRecursive( $nextBatch, $nextStack ); |
| 490 | $allSettings = array_merge( $allSettings, $nextSettings ); |
| 491 | } |
| 492 | |
| 493 | return $allSettings; |
| 494 | } |
| 495 | |
| 496 | /** |
| 497 | * Updates config settings relevant to the behavior if SettingsBuilder itself. |
| 498 | * |
| 499 | * @param array $config |
| 500 | * |
| 501 | * @return string |
| 502 | */ |
| 503 | private function updateSettingsConfig( $config ): string { |
| 504 | // No merge strategies are applied, defaults are set in the constructor. |
| 505 | foreach ( $this->settingsConfig as $key => $dummy ) { |
| 506 | if ( array_key_exists( $key, $config ) ) { |
| 507 | $this->settingsConfig[ $key ] = $config[ $key ]; |
| 508 | } |
| 509 | } |
| 510 | // @phan-suppress-next-line PhanTypeMismatchReturnNullable,PhanPossiblyUndeclaredVariable Always set |
| 511 | return $key; |
| 512 | } |
| 513 | |
| 514 | /** |
| 515 | * Notify SettingsBuilder that it can no longer assume that is has full knowledge of |
| 516 | * all configuration variables that have been set. This would be the case when other code |
| 517 | * (such as LocalSettings.php) is manipulating global variables which represent config |
| 518 | * values. |
| 519 | * |
| 520 | * This is used for optimization: up until this method is called, default values can be set |
| 521 | * directly for any config values that have not been set yet. This avoids the need to |
| 522 | * run merge logic for all default values during initialization. |
| 523 | * |
| 524 | * @note It is useful to call apply() just before this method, so any settings already queued |
| 525 | * will still benefit from assuming that globals are not dirty. |
| 526 | * |
| 527 | * @return self |
| 528 | */ |
| 529 | public function assumeDirtyConfig(): SettingsBuilder { |
| 530 | $this->defaultsNeedMerging = true; |
| 531 | return $this; |
| 532 | } |
| 533 | |
| 534 | /** |
| 535 | * Apply schemas from the settings array. |
| 536 | * |
| 537 | * This returns the default values to apply, splits into two two categories: |
| 538 | * "hard" defaults, which can be applied as config overrides without merging. |
| 539 | * And "soft" defaults, which have to be reverse-merged. |
| 540 | * Defaults can be considered "hard" if no config value was yet set for them. However, |
| 541 | * we can only know that as long as we can be sure that nothing has changed config values |
| 542 | * in a way that bypasses SettingsLoader (e.g. by setting global variables in LocalSettings.php). |
| 543 | * |
| 544 | * @param array $settings A settings structure. |
| 545 | */ |
| 546 | private function applySchemas( array $settings ) { |
| 547 | $defaults = []; |
| 548 | |
| 549 | if ( isset( $settings['config-schema-inverse'] ) ) { |
| 550 | $defaults = $settings['config-schema-inverse']['default'] ?? []; |
| 551 | $this->configSchema->addDefaults( |
| 552 | $defaults, |
| 553 | $settings['source-name'] |
| 554 | ); |
| 555 | $this->configSchema->addMergeStrategies( |
| 556 | $settings['config-schema-inverse']['mergeStrategy'] ?? [], |
| 557 | $settings['source-name'] |
| 558 | ); |
| 559 | $this->configSchema->addTypes( |
| 560 | $settings['config-schema-inverse']['type'] ?? [], |
| 561 | $settings['source-name'] |
| 562 | ); |
| 563 | $this->configSchema->addDynamicDefaults( |
| 564 | $settings['config-schema-inverse']['dynamicDefault'] ?? [], |
| 565 | $settings['source-name'] |
| 566 | ); |
| 567 | } |
| 568 | |
| 569 | if ( isset( $settings['config-schema'] ) ) { |
| 570 | foreach ( $settings['config-schema'] as $key => $schema ) { |
| 571 | $this->configSchema->addSchema( $key, $schema ); |
| 572 | |
| 573 | if ( $this->configSchema->hasDefaultFor( $key ) ) { |
| 574 | $defaults[$key] = $this->configSchema->getDefaultFor( $key ); |
| 575 | } |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | if ( $this->defaultsNeedMerging ) { |
| 580 | $mergeStrategies = $this->configSchema->getMergeStrategies(); |
| 581 | $this->configSink->setMultiDefault( $defaults, $mergeStrategies ); |
| 582 | } else { |
| 583 | // Optimization: no merge strategy, just override in one go |
| 584 | $this->configSink->setMulti( $defaults ); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | /** |
| 589 | * Apply the settings array. |
| 590 | * |
| 591 | * @param array $settings |
| 592 | */ |
| 593 | private function applySettings( array $settings ) { |
| 594 | // First extract config variables that change the behavior of SettingsBuilder. |
| 595 | // No merge strategies are applied, defaults are set in the constructor. |
| 596 | if ( isset( $settings['config'] ) ) { |
| 597 | $this->updateSettingsConfig( $settings['config'] ); |
| 598 | } |
| 599 | if ( isset( $settings['config-overrides'] ) ) { |
| 600 | $this->updateSettingsConfig( $settings['config-overrides'] ); |
| 601 | } |
| 602 | |
| 603 | $this->applySchemas( $settings ); |
| 604 | |
| 605 | if ( isset( $settings['config'] ) ) { |
| 606 | $mergeStrategies = $this->configSchema->getMergeStrategies(); |
| 607 | $this->configSink->setMulti( $settings['config'], $mergeStrategies ); |
| 608 | } |
| 609 | |
| 610 | if ( isset( $settings['config-overrides'] ) ) { |
| 611 | // no merge strategies, just override in one go |
| 612 | $this->configSink->setMulti( $settings['config-overrides'] ); |
| 613 | } |
| 614 | |
| 615 | if ( isset( $settings['obsolete-config'] ) ) { |
| 616 | $this->obsoleteConfig = array_merge( $this->obsoleteConfig, $settings['obsolete-config'] ); |
| 617 | } |
| 618 | |
| 619 | if ( isset( $settings['config'] ) || isset( $settings['config-overrides'] ) ) { |
| 620 | // We have set some config variables, we can no longer assume we can blindly set defaults |
| 621 | // without merging with existing config variables. |
| 622 | // XXX: We could potentially track which config variables have been set, so we can still |
| 623 | // apply defaults for other config vars without merging. |
| 624 | $this->defaultsNeedMerging = true; |
| 625 | } |
| 626 | |
| 627 | foreach ( $settings['php-ini'] ?? [] as $option => $value ) { |
| 628 | $this->phpIniSink->set( |
| 629 | $option, |
| 630 | $value |
| 631 | ); |
| 632 | } |
| 633 | |
| 634 | // TODO: Closely integrate with ExtensionRegistry. Loading extension.json is basically |
| 635 | // the same as loading settings files. See T297166. |
| 636 | // That would also mean that extensions would actually be loaded here, |
| 637 | // not just queued. We can't do this right now, because we need to preserve |
| 638 | // interoperability with wfLoadExtension() being called from LocalSettings.php. |
| 639 | |
| 640 | if ( isset( $settings['extensions'] ) ) { |
| 641 | $extDir = $this->settingsConfig[MainConfigNames::ExtensionDirectory]; |
| 642 | foreach ( $settings['extensions'] ?? [] as $ext ) { |
| 643 | $path = "$extDir/$ext/extension.json"; // see wfLoadExtension |
| 644 | $this->extensionRegistry->queue( $path ); |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | if ( isset( $settings['skins'] ) ) { |
| 649 | $skinDir = $this->settingsConfig[MainConfigNames::StyleDirectory]; |
| 650 | foreach ( $settings['skins'] ?? [] as $skin ) { |
| 651 | $path = "$skinDir/$skin/skin.json"; // see wfLoadSkin |
| 652 | $this->extensionRegistry->queue( $path ); |
| 653 | } |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | /** |
| 658 | * Puts a value into a config variable. |
| 659 | * Depending on the variable's specification, the new value may |
| 660 | * be merged with the previous value, or may replace it. |
| 661 | * This is a shorthand for putConfigValues( [ $key => $value ] ). |
| 662 | * |
| 663 | * @see overrideConfigValue |
| 664 | * |
| 665 | * @param string $key the name of the config setting |
| 666 | * @param mixed $value The value to set |
| 667 | * |
| 668 | * @return $this |
| 669 | */ |
| 670 | public function putConfigValue( string $key, $value ): self { |
| 671 | return $this->putConfigValues( [ $key => $value ] ); |
| 672 | } |
| 673 | |
| 674 | /** |
| 675 | * Sets the value of multiple config variables. |
| 676 | * Depending on the variables' specification, the new values may |
| 677 | * be merged with the previous values, or they may replace them. |
| 678 | * This is a shorthand for loadArray( [ 'config' => $values ] ). |
| 679 | * |
| 680 | * @see overrideConfigValues |
| 681 | * |
| 682 | * @param array $values An associative array mapping names to values. |
| 683 | * |
| 684 | * @return $this |
| 685 | */ |
| 686 | public function putConfigValues( array $values ): self { |
| 687 | return $this->loadArrayInternal( [ 'config' => $values ], __METHOD__ ); |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Override the value of a config variable. |
| 692 | * This ignores any merge strategies and discards any previous value. |
| 693 | * This is a shorthand for overrideConfigValues( [ $key => $value ] ). |
| 694 | * |
| 695 | * @see putConfigValue |
| 696 | * |
| 697 | * @param string $key the name of the config setting |
| 698 | * @param mixed $value The value to set |
| 699 | * |
| 700 | * @return $this |
| 701 | */ |
| 702 | public function overrideConfigValue( string $key, $value ): self { |
| 703 | return $this->overrideConfigValues( [ $key => $value ] ); |
| 704 | } |
| 705 | |
| 706 | /** |
| 707 | * Override the value of multiple config variables. |
| 708 | * This ignores any merge strategies and discards any previous value. |
| 709 | * This is a shorthand for loadArray( [ 'config-overrides' => $values ] ). |
| 710 | * |
| 711 | * @see putConfigValues |
| 712 | * |
| 713 | * @param array $values An associative array mapping names to values. |
| 714 | * |
| 715 | * @return $this |
| 716 | */ |
| 717 | public function overrideConfigValues( array $values ): self { |
| 718 | return $this->loadArrayInternal( [ 'config-overrides' => $values ], __METHOD__ ); |
| 719 | } |
| 720 | |
| 721 | /** |
| 722 | * Register hook handlers. |
| 723 | * |
| 724 | * @param array<string,mixed> $handlers An associative array using the same structure |
| 725 | * as the Hooks config setting: |
| 726 | * Each value is a list of handler callbacks for the hook. |
| 727 | * |
| 728 | * @return $this |
| 729 | * @see HookContainer::register() |
| 730 | */ |
| 731 | public function registerHookHandlers( array $handlers ): self { |
| 732 | // NOTE: Rely on the merge strategy for the Hooks setting. |
| 733 | // TODO: Make hook handlers a separate structure in settings files, |
| 734 | // like they are in extension.json. |
| 735 | return $this->loadArrayInternal( [ 'config' => [ 'Hooks' => $handlers ] ], __METHOD__ ); |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * Register a hook handler. |
| 740 | * |
| 741 | * @param string $hook |
| 742 | * @param mixed $handler |
| 743 | * |
| 744 | * @return $this |
| 745 | * @see HookContainer::register() |
| 746 | */ |
| 747 | public function registerHookHandler( string $hook, $handler ): self { |
| 748 | // NOTE: Rely on the merge strategy for the Hooks setting. |
| 749 | // TODO: Make hook handlers a separate structure in settings files, |
| 750 | // like they are in extension.json. |
| 751 | return $this->loadArray( [ 'config' => [ 'Hooks' => [ $hook => [ $handler ] ] ] ] ); |
| 752 | } |
| 753 | |
| 754 | /** |
| 755 | * Returns the config loaded so far. Implicitly triggers apply() when needed. |
| 756 | * |
| 757 | * @note This will implicitly call apply() |
| 758 | * |
| 759 | * @return Config |
| 760 | */ |
| 761 | public function getConfig(): Config { |
| 762 | // XXX: Would be nice if we could forbid using this method |
| 763 | // before enterRegistrationStage() is called. But we need |
| 764 | // access to some configuration earlier, e.g. WikiFarmSettingsDirectory. |
| 765 | |
| 766 | if ( $this->config && !$this->currentBatch ) { |
| 767 | return $this->config; |
| 768 | } |
| 769 | |
| 770 | $this->apply(); |
| 771 | $this->config = $this->configSink->build(); |
| 772 | |
| 773 | return $this->config; |
| 774 | } |
| 775 | |
| 776 | private function reset() { |
| 777 | $this->currentBatch = []; |
| 778 | } |
| 779 | |
| 780 | private function assertNotReadOnly( string $func ): void { |
| 781 | if ( $this->stage === self::STAGE_READ_ONLY ) { |
| 782 | throw new SettingsBuilderException( |
| 783 | "$func not supported in operation stage." |
| 784 | ); |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | private function assertStillLoading( string $func ): void { |
| 789 | if ( $this->stage !== self::STAGE_LOADING ) { |
| 790 | throw new SettingsBuilderException( |
| 791 | "$func only supported while still in the loading stage." |
| 792 | ); |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | /** |
| 797 | * Sets the SettingsBuilder read-only. |
| 798 | * |
| 799 | * Call this before using the configuration returned by getConfig() to construct services objects |
| 800 | * or initialize the service container. |
| 801 | * |
| 802 | * @internal For use in Setup.php. |
| 803 | */ |
| 804 | public function enterReadOnlyStage(): void { |
| 805 | $this->apply(); |
| 806 | $this->stage = self::STAGE_READ_ONLY; |
| 807 | } |
| 808 | |
| 809 | /** |
| 810 | * Prevents additional settings from being loaded, but still allows manipulation of config values. |
| 811 | * |
| 812 | * Call this before applying dynamic defaults and executing extension registration callbacks. |
| 813 | * |
| 814 | * @internal For use in Setup.php. |
| 815 | */ |
| 816 | public function enterRegistrationStage(): void { |
| 817 | $this->apply(); |
| 818 | $this->stage = self::STAGE_REGISTRATION; |
| 819 | } |
| 820 | |
| 821 | /** |
| 822 | * @internal For use in Setup.php, pending a better solution. |
| 823 | * @return ConfigBuilder |
| 824 | */ |
| 825 | public function getConfigBuilder(): ConfigBuilder { |
| 826 | $this->apply(); |
| 827 | return $this->configSink; |
| 828 | } |
| 829 | |
| 830 | /** |
| 831 | * Log a settings related warning, such as a deprecated config variable. |
| 832 | * |
| 833 | * This can be used during bootstrapping, when the regular logger is not yet available. |
| 834 | * The warnings will be passed to a regular logger after bootstrapping is complete. |
| 835 | * In addition, the updater will fail if it finds any warnings. |
| 836 | * This allows us to warn about deprecated settings, and make sure they are |
| 837 | * replaced before the update proceeds. |
| 838 | * |
| 839 | * @param string $msg |
| 840 | */ |
| 841 | public function warning( string $msg ) { |
| 842 | $this->assertNotReadOnly( __METHOD__ ); |
| 843 | $this->warnings[] = trim( $msg ); |
| 844 | } |
| 845 | |
| 846 | /** |
| 847 | * Returns any warnings logged by calling warning(). |
| 848 | * |
| 849 | * @internal |
| 850 | * @return string[] |
| 851 | */ |
| 852 | public function getWarnings(): array { |
| 853 | return $this->warnings; |
| 854 | } |
| 855 | |
| 856 | } |