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| 1 | <?php |
| 2 | /** |
| 3 | * Base classes for database-dumping maintenance scripts. |
| 4 | * |
| 5 | * Copyright © 2005 Brooke Vibber <bvibber@wikimedia.org> |
| 6 | * https://www.mediawiki.org/ |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 21 | * http://www.gnu.org/copyleft/gpl.html |
| 22 | * |
| 23 | * @file |
| 24 | * @ingroup Dump |
| 25 | * @ingroup Maintenance |
| 26 | */ |
| 27 | |
| 28 | require_once __DIR__ . '/../Maintenance.php'; |
| 29 | require_once __DIR__ . '/../../includes/export/WikiExporter.php'; |
| 30 | |
| 31 | use MediaWiki\MainConfigNames; |
| 32 | use MediaWiki\Settings\SettingsBuilder; |
| 33 | use MediaWiki\WikiMap\WikiMap; |
| 34 | use Wikimedia\Rdbms\IMaintainableDatabase; |
| 35 | use Wikimedia\Rdbms\LoadBalancer; |
| 36 | |
| 37 | /** |
| 38 | * @ingroup Dump |
| 39 | * @ingroup Maintenance |
| 40 | */ |
| 41 | abstract class BackupDumper extends Maintenance { |
| 42 | /** @var bool */ |
| 43 | public $reporting = true; |
| 44 | /** @var string[]|null null means all pages */ |
| 45 | public $pages = null; |
| 46 | /** @var bool don't output <mediawiki> and <siteinfo> */ |
| 47 | public $skipHeader = false; |
| 48 | /** @var bool don't output </mediawiki> */ |
| 49 | public $skipFooter = false; |
| 50 | /** @var int */ |
| 51 | public $startId = 0; |
| 52 | /** @var int */ |
| 53 | public $endId = 0; |
| 54 | /** @var int */ |
| 55 | public $revStartId = 0; |
| 56 | /** @var int */ |
| 57 | public $revEndId = 0; |
| 58 | /** @var bool */ |
| 59 | public $dumpUploads = false; |
| 60 | /** @var bool */ |
| 61 | public $dumpUploadFileContents = false; |
| 62 | /** @var bool */ |
| 63 | public $orderRevs = false; |
| 64 | /** @var array|null */ |
| 65 | public $limitNamespaces = []; |
| 66 | /** @var resource|false */ |
| 67 | public $stderr; |
| 68 | |
| 69 | /** @var int */ |
| 70 | protected $reportingInterval = 100; |
| 71 | /** @var int */ |
| 72 | protected $pageCount = 0; |
| 73 | /** @var int */ |
| 74 | protected $revCount = 0; |
| 75 | /** @var string|null null means use default */ |
| 76 | protected $schemaVersion = null; |
| 77 | /** @var string|null null means use default */ |
| 78 | protected $server = null; |
| 79 | /** @var DumpMultiWriter|DumpOutput|null Output filters */ |
| 80 | protected $sink = null; |
| 81 | /** @var float */ |
| 82 | protected $lastTime = 0; |
| 83 | /** @var int */ |
| 84 | protected $pageCountLast = 0; |
| 85 | /** @var int */ |
| 86 | protected $revCountLast = 0; |
| 87 | |
| 88 | /** @var string[] */ |
| 89 | protected $outputTypes = []; |
| 90 | /** @var string[] */ |
| 91 | protected $filterTypes = []; |
| 92 | |
| 93 | /** @var int */ |
| 94 | protected $ID = 0; |
| 95 | |
| 96 | /** @var float */ |
| 97 | protected $startTime; |
| 98 | /** @var int */ |
| 99 | protected $pageCountPart; |
| 100 | /** @var int */ |
| 101 | protected $revCountPart; |
| 102 | /** @var int */ |
| 103 | protected $maxCount; |
| 104 | /** @var float */ |
| 105 | protected $timeOfCheckpoint; |
| 106 | /** @var ExportProgressFilter */ |
| 107 | protected $egress; |
| 108 | /** @var string */ |
| 109 | protected $buffer; |
| 110 | /** @var array|false */ |
| 111 | protected $openElement; |
| 112 | /** @var bool */ |
| 113 | protected $atStart; |
| 114 | /** @var string|null */ |
| 115 | protected $thisRevModel; |
| 116 | /** @var string|null */ |
| 117 | protected $thisRevFormat; |
| 118 | /** @var string */ |
| 119 | protected $lastName; |
| 120 | /** @var string */ |
| 121 | protected $state; |
| 122 | |
| 123 | /** |
| 124 | * The dependency-injected database to use. |
| 125 | * |
| 126 | * @var IMaintainableDatabase|null |
| 127 | * |
| 128 | * @see self::setDB |
| 129 | */ |
| 130 | protected $forcedDb = null; |
| 131 | |
| 132 | /** @var LoadBalancer */ |
| 133 | protected $lb; |
| 134 | |
| 135 | /** |
| 136 | * @param array|null $args For backward compatibility |
| 137 | */ |
| 138 | public function __construct( $args = null ) { |
| 139 | parent::__construct(); |
| 140 | $this->stderr = fopen( "php://stderr", "wt" ); |
| 141 | |
| 142 | // Built-in output and filter plugins |
| 143 | $this->registerOutput( 'file', DumpFileOutput::class ); |
| 144 | $this->registerOutput( 'gzip', DumpGZipOutput::class ); |
| 145 | $this->registerOutput( 'bzip2', DumpBZip2Output::class ); |
| 146 | $this->registerOutput( 'dbzip2', DumpDBZip2Output::class ); |
| 147 | $this->registerOutput( 'lbzip2', DumpLBZip2Output::class ); |
| 148 | $this->registerOutput( '7zip', Dump7ZipOutput::class ); |
| 149 | |
| 150 | $this->registerFilter( 'latest', DumpLatestFilter::class ); |
| 151 | $this->registerFilter( 'notalk', DumpNotalkFilter::class ); |
| 152 | $this->registerFilter( 'namespace', DumpNamespaceFilter::class ); |
| 153 | |
| 154 | // These three can be specified multiple times |
| 155 | $this->addOption( 'plugin', 'Load a dump plugin class. Specify as <class>[:<file>].', |
| 156 | false, true, false, true ); |
| 157 | $this->addOption( 'output', 'Begin a filtered output stream; Specify as <type>:<file>. ' . |
| 158 | '<type>s: file, gzip, bzip2, 7zip, dbzip2, lbzip2', false, true, 'o', true ); |
| 159 | $this->addOption( 'filter', 'Add a filter on an output branch. Specify as ' . |
| 160 | '<type>[:<options>]. <types>s: latest, notalk, namespace', false, true, false, true ); |
| 161 | $this->addOption( 'report', 'Report position and speed after every n pages processed. ' . |
| 162 | 'Default: 100.', false, true ); |
| 163 | $this->addOption( 'server', 'Force reading from MySQL server', false, true ); |
| 164 | $this->addOption( '7ziplevel', '7zip compression level for all 7zip outputs. Used for ' . |
| 165 | '-mx option to 7za command.', false, true ); |
| 166 | // NOTE: we can't know the default schema version yet, since configuration has not been |
| 167 | // loaded when this constructor is called. To work around this, we re-declare |
| 168 | // this option in validateParamsAndArgs(). |
| 169 | $this->addOption( 'schema-version', 'Schema version to use for output.', false, true ); |
| 170 | |
| 171 | if ( $args ) { |
| 172 | // Args should be loaded and processed so that dump() can be called directly |
| 173 | // instead of execute() |
| 174 | $this->loadWithArgv( $args ); |
| 175 | $this->processOptions(); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | public function finalSetup( SettingsBuilder $settingsBuilder ) { |
| 180 | parent::finalSetup( $settingsBuilder ); |
| 181 | // re-declare the --schema-version option to include the default schema version |
| 182 | // in the description. |
| 183 | $schemaVersion = $settingsBuilder->getConfig()->get( MainConfigNames::XmlDumpSchemaVersion ); |
| 184 | $this->addOption( 'schema-version', 'Schema version to use for output. ' . |
| 185 | 'Default: ' . $schemaVersion, false, true ); |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * @param string $name |
| 190 | * @param string $class Name of output filter plugin class |
| 191 | */ |
| 192 | public function registerOutput( $name, $class ) { |
| 193 | $this->outputTypes[$name] = $class; |
| 194 | } |
| 195 | |
| 196 | /** |
| 197 | * @param string $name |
| 198 | * @param string $class Name of filter plugin class |
| 199 | */ |
| 200 | public function registerFilter( $name, $class ) { |
| 201 | $this->filterTypes[$name] = $class; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * Load a plugin and register it |
| 206 | * |
| 207 | * @param string $class Name of plugin class; must have a static 'register' |
| 208 | * method that takes a BackupDumper as a parameter. |
| 209 | * @param string $file Full or relative path to the PHP file to load, or empty |
| 210 | */ |
| 211 | public function loadPlugin( $class, $file ) { |
| 212 | if ( $file != '' ) { |
| 213 | require_once $file; |
| 214 | } |
| 215 | $register = [ $class, 'register' ]; |
| 216 | $register( $this ); |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * Processes arguments and sets $this->$sink accordingly |
| 221 | */ |
| 222 | protected function processOptions() { |
| 223 | $sink = null; |
| 224 | $sinks = []; |
| 225 | |
| 226 | $this->schemaVersion = WikiExporter::schemaVersion(); |
| 227 | |
| 228 | $options = $this->orderedOptions; |
| 229 | foreach ( $options as [ $opt, $param ] ) { |
| 230 | switch ( $opt ) { |
| 231 | case 'plugin': |
| 232 | $val = explode( ':', $param, 2 ); |
| 233 | |
| 234 | if ( count( $val ) === 1 ) { |
| 235 | $this->loadPlugin( $val[0], '' ); |
| 236 | } elseif ( count( $val ) === 2 ) { |
| 237 | $this->loadPlugin( $val[0], $val[1] ); |
| 238 | } |
| 239 | |
| 240 | break; |
| 241 | case 'output': |
| 242 | $split = explode( ':', $param, 2 ); |
| 243 | if ( count( $split ) !== 2 ) { |
| 244 | $this->fatalError( 'Invalid output parameter' ); |
| 245 | } |
| 246 | [ $type, $file ] = $split; |
| 247 | if ( $sink !== null ) { |
| 248 | $sinks[] = $sink; |
| 249 | } |
| 250 | if ( !isset( $this->outputTypes[$type] ) ) { |
| 251 | $this->fatalError( "Unrecognized output sink type '$type'" ); |
| 252 | } |
| 253 | $class = $this->outputTypes[$type]; |
| 254 | if ( $type === "7zip" ) { |
| 255 | $sink = new $class( $file, intval( $this->getOption( '7ziplevel' ) ) ); |
| 256 | } else { |
| 257 | $sink = new $class( $file ); |
| 258 | } |
| 259 | |
| 260 | break; |
| 261 | case 'filter': |
| 262 | if ( $sink === null ) { |
| 263 | $sink = new DumpOutput(); |
| 264 | } |
| 265 | |
| 266 | $split = explode( ':', $param, 2 ); |
| 267 | $key = $split[0]; |
| 268 | |
| 269 | if ( !isset( $this->filterTypes[$key] ) ) { |
| 270 | $this->fatalError( "Unrecognized filter type '$key'" ); |
| 271 | } |
| 272 | |
| 273 | $type = $this->filterTypes[$key]; |
| 274 | |
| 275 | if ( count( $split ) === 2 ) { |
| 276 | $filter = new $type( $sink, $split[1] ); |
| 277 | } else { |
| 278 | $filter = new $type( $sink ); |
| 279 | } |
| 280 | |
| 281 | // references are lame in php... |
| 282 | unset( $sink ); |
| 283 | $sink = $filter; |
| 284 | |
| 285 | break; |
| 286 | case 'schema-version': |
| 287 | if ( !in_array( $param, XmlDumpWriter::$supportedSchemas ) ) { |
| 288 | $this->fatalError( |
| 289 | "Unsupported schema version $param. Supported versions: " . |
| 290 | implode( ', ', XmlDumpWriter::$supportedSchemas ) |
| 291 | ); |
| 292 | } |
| 293 | $this->schemaVersion = $param; |
| 294 | break; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | if ( $this->hasOption( 'report' ) ) { |
| 299 | $this->reportingInterval = intval( $this->getOption( 'report' ) ); |
| 300 | } |
| 301 | |
| 302 | if ( $this->hasOption( 'server' ) ) { |
| 303 | $this->server = $this->getOption( 'server' ); |
| 304 | } |
| 305 | |
| 306 | if ( $sink === null ) { |
| 307 | $sink = new DumpOutput(); |
| 308 | } |
| 309 | $sinks[] = $sink; |
| 310 | |
| 311 | if ( count( $sinks ) > 1 ) { |
| 312 | $this->sink = new DumpMultiWriter( $sinks ); |
| 313 | } else { |
| 314 | $this->sink = $sink; |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | public function dump( $history, $text = WikiExporter::TEXT ) { |
| 319 | # Notice messages will foul up your XML output even if they're |
| 320 | # relatively harmless. |
| 321 | if ( ini_get( 'display_errors' ) ) { |
| 322 | ini_set( 'display_errors', 'stderr' ); |
| 323 | } |
| 324 | |
| 325 | $this->initProgress( $history ); |
| 326 | |
| 327 | $db = $this->backupDb(); |
| 328 | $services = $this->getServiceContainer(); |
| 329 | $exporter = $services->getWikiExporterFactory()->getWikiExporter( |
| 330 | $db, |
| 331 | $history, |
| 332 | $text, |
| 333 | $this->limitNamespaces |
| 334 | ); |
| 335 | $exporter->setSchemaVersion( $this->schemaVersion ); |
| 336 | $exporter->dumpUploads = $this->dumpUploads; |
| 337 | $exporter->dumpUploadFileContents = $this->dumpUploadFileContents; |
| 338 | |
| 339 | $wrapper = new ExportProgressFilter( $this->sink, $this ); |
| 340 | $exporter->setOutputSink( $wrapper ); |
| 341 | |
| 342 | if ( !$this->skipHeader ) { |
| 343 | $exporter->openStream(); |
| 344 | } |
| 345 | # Log item dumps: all or by range |
| 346 | if ( $history & WikiExporter::LOGS ) { |
| 347 | if ( $this->startId || $this->endId ) { |
| 348 | $exporter->logsByRange( $this->startId, $this->endId ); |
| 349 | } else { |
| 350 | $exporter->allLogs(); |
| 351 | } |
| 352 | } elseif ( $this->pages === null ) { |
| 353 | # Page dumps: all or by page ID range |
| 354 | if ( $this->startId || $this->endId ) { |
| 355 | $exporter->pagesByRange( $this->startId, $this->endId, $this->orderRevs ); |
| 356 | } elseif ( $this->revStartId || $this->revEndId ) { |
| 357 | $exporter->revsByRange( $this->revStartId, $this->revEndId ); |
| 358 | } else { |
| 359 | $exporter->allPages(); |
| 360 | } |
| 361 | } else { |
| 362 | # Dump of specific pages |
| 363 | $exporter->pagesByName( $this->pages ); |
| 364 | } |
| 365 | |
| 366 | if ( !$this->skipFooter ) { |
| 367 | $exporter->closeStream(); |
| 368 | } |
| 369 | |
| 370 | $this->report( true ); |
| 371 | } |
| 372 | |
| 373 | /** |
| 374 | * Initialise starting time and maximum revision count. |
| 375 | * We'll make ETA calculations based on progress, assuming relatively |
| 376 | * constant per-revision rate. |
| 377 | * @param int $history WikiExporter::CURRENT or WikiExporter::FULL |
| 378 | */ |
| 379 | public function initProgress( $history = WikiExporter::FULL ) { |
| 380 | $table = ( $history == WikiExporter::CURRENT ) ? 'page' : 'revision'; |
| 381 | $field = ( $history == WikiExporter::CURRENT ) ? 'page_id' : 'rev_id'; |
| 382 | |
| 383 | $dbr = $this->forcedDb; |
| 384 | if ( $this->forcedDb === null ) { |
| 385 | $dbr = $this->getDB( DB_REPLICA, [ 'dump' ] ); |
| 386 | } |
| 387 | $this->maxCount = $dbr->newSelectQueryBuilder() |
| 388 | ->select( "MAX($field)" ) |
| 389 | ->from( $table ) |
| 390 | ->caller( __METHOD__ )->fetchField(); |
| 391 | $this->startTime = microtime( true ); |
| 392 | $this->lastTime = $this->startTime; |
| 393 | $this->ID = getmypid(); |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * @todo Fixme: the --server parameter is currently not respected, as it |
| 398 | * doesn't seem terribly easy to ask the load balancer for a particular |
| 399 | * connection by name. |
| 400 | * @return IMaintainableDatabase |
| 401 | */ |
| 402 | protected function backupDb() { |
| 403 | if ( $this->forcedDb !== null ) { |
| 404 | return $this->forcedDb; |
| 405 | } |
| 406 | |
| 407 | $lbFactory = $this->getServiceContainer()->getDBLoadBalancerFactory(); |
| 408 | $this->lb = $lbFactory->newMainLB(); |
| 409 | $db = $this->lb->getMaintenanceConnectionRef( DB_REPLICA, 'dump' ); |
| 410 | |
| 411 | // Discourage the server from disconnecting us if it takes a long time |
| 412 | // to read out the big ol' batch query. |
| 413 | $db->setSessionOptions( [ 'connTimeout' => 3600 * 24 ] ); |
| 414 | |
| 415 | return $db; |
| 416 | } |
| 417 | |
| 418 | /** |
| 419 | * Force the dump to use the provided database connection for database |
| 420 | * operations, wherever possible. |
| 421 | * |
| 422 | * @param IMaintainableDatabase $db The database connection to use |
| 423 | */ |
| 424 | public function setDB( IMaintainableDatabase $db ) { |
| 425 | parent::setDB( $db ); |
| 426 | $this->forcedDb = $db; |
| 427 | } |
| 428 | |
| 429 | public function __destruct() { |
| 430 | if ( isset( $this->lb ) ) { |
| 431 | $this->lb->closeAll( __METHOD__ ); |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | protected function backupServer() { |
| 436 | global $wgDBserver; |
| 437 | |
| 438 | return $this->server ?: $wgDBserver; |
| 439 | } |
| 440 | |
| 441 | public function reportPage() { |
| 442 | $this->pageCount++; |
| 443 | } |
| 444 | |
| 445 | public function revCount() { |
| 446 | $this->revCount++; |
| 447 | $this->report(); |
| 448 | } |
| 449 | |
| 450 | public function report( $final = false ) { |
| 451 | if ( $final xor ( $this->revCount % $this->reportingInterval == 0 ) ) { |
| 452 | $this->showReport(); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | public function showReport() { |
| 457 | if ( $this->reporting ) { |
| 458 | $now = wfTimestamp( TS_DB ); |
| 459 | $nowts = microtime( true ); |
| 460 | $deltaAll = $nowts - $this->startTime; |
| 461 | $deltaPart = $nowts - $this->lastTime; |
| 462 | $this->pageCountPart = $this->pageCount - $this->pageCountLast; |
| 463 | $this->revCountPart = $this->revCount - $this->revCountLast; |
| 464 | |
| 465 | if ( $deltaAll ) { |
| 466 | $portion = $this->revCount / $this->maxCount; |
| 467 | $eta = $this->startTime + $deltaAll / $portion; |
| 468 | $etats = wfTimestamp( TS_DB, intval( $eta ) ); |
| 469 | $pageRate = $this->pageCount / $deltaAll; |
| 470 | $revRate = $this->revCount / $deltaAll; |
| 471 | } else { |
| 472 | $pageRate = '-'; |
| 473 | $revRate = '-'; |
| 474 | $etats = '-'; |
| 475 | } |
| 476 | if ( $deltaPart ) { |
| 477 | $pageRatePart = $this->pageCountPart / $deltaPart; |
| 478 | $revRatePart = $this->revCountPart / $deltaPart; |
| 479 | } else { |
| 480 | $pageRatePart = '-'; |
| 481 | $revRatePart = '-'; |
| 482 | } |
| 483 | |
| 484 | $dbDomain = WikiMap::getCurrentWikiDbDomain()->getId(); |
| 485 | $this->progress( sprintf( |
| 486 | "%s: %s (ID %d) %d pages (%0.1f|%0.1f/sec all|curr), " |
| 487 | . "%d revs (%0.1f|%0.1f/sec all|curr), ETA %s [max %d]", |
| 488 | $now, $dbDomain, $this->ID, $this->pageCount, $pageRate, |
| 489 | $pageRatePart, $this->revCount, $revRate, $revRatePart, $etats, |
| 490 | $this->maxCount |
| 491 | ) ); |
| 492 | $this->lastTime = $nowts; |
| 493 | $this->revCountLast = $this->revCount; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | protected function progress( $string ) { |
| 498 | if ( $this->reporting ) { |
| 499 | fwrite( $this->stderr, $string . "\n" ); |
| 500 | } |
| 501 | } |
| 502 | } |