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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Import; |
| 4 | |
| 5 | use Flow\Import\SourceStore\Exception as ImportSourceStoreException; |
| 6 | use Flow\Model\AbstractRevision; |
| 7 | use Flow\Model\Header; |
| 8 | use Flow\Model\PostRevision; |
| 9 | use Flow\Model\PostSummary; |
| 10 | use Flow\Model\TopicListEntry; |
| 11 | use Flow\Model\Workflow; |
| 12 | use Flow\OccupationController; |
| 13 | use MediaWiki\Exception\MWExceptionHandler; |
| 14 | use MediaWiki\MediaWikiServices; |
| 15 | use MediaWiki\Title\Title; |
| 16 | use MediaWiki\User\User; |
| 17 | use MediaWiki\Utils\MWTimestamp; |
| 18 | |
| 19 | class TalkpageImportOperation { |
| 20 | /** |
| 21 | * @var IImportSource |
| 22 | */ |
| 23 | protected $importSource; |
| 24 | |
| 25 | /** @var User User doing the conversion actions (e.g. initial description, wikitext |
| 26 | * archive edit). However, actions will be attributed to the original user when |
| 27 | * possible (e.g. the user who did the original LQT reply) |
| 28 | */ |
| 29 | protected $user; |
| 30 | |
| 31 | /** @var OccupationController */ |
| 32 | protected $occupationController; |
| 33 | |
| 34 | /** |
| 35 | * @param IImportSource $source |
| 36 | * @param User $user The import user; this will only be used when there is no |
| 37 | * 'original' user |
| 38 | * @param OccupationController $occupationController |
| 39 | */ |
| 40 | public function __construct( IImportSource $source, User $user, OccupationController $occupationController ) { |
| 41 | $this->importSource = $source; |
| 42 | $this->user = $user; |
| 43 | $this->occupationController = $occupationController; |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * @param PageImportState $state |
| 48 | * @return bool True if import completed successfully |
| 49 | * @throws ImportSourceStoreException |
| 50 | * @throws \Exception |
| 51 | */ |
| 52 | public function import( PageImportState $state ) { |
| 53 | $destinationTitle = $state->boardWorkflow->getArticleTitle(); |
| 54 | $state->logger->info( 'Importing to ' . $destinationTitle->getPrefixedText() ); |
| 55 | $isNew = $state->boardWorkflow->isNew(); |
| 56 | $state->logger->debug( 'Workflow isNew: ' . var_export( $isNew, true ) ); |
| 57 | if ( $isNew ) { |
| 58 | // Explicitly allow creation of board |
| 59 | $creationStatus = $this->occupationController->safeAllowCreation( |
| 60 | $destinationTitle, |
| 61 | $this->user, |
| 62 | /* $mustNotExist = */ true |
| 63 | ); |
| 64 | if ( !$creationStatus->isGood() ) { |
| 65 | throw new ImportException( |
| 66 | "safeAllowCreation failed to allow the import destination, with the following error:\n" . |
| 67 | $creationStatus->getWikiText() |
| 68 | ); |
| 69 | } |
| 70 | |
| 71 | // Makes sure the page exists and a Flow-specific revision has been inserted |
| 72 | $status = $this->occupationController->ensureFlowRevision( |
| 73 | MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $destinationTitle ), |
| 74 | $state->boardWorkflow |
| 75 | ); |
| 76 | $state->logger->debug( |
| 77 | 'ensureFlowRevision status isOK: ' . var_export( $status->isOK(), true ) |
| 78 | ); |
| 79 | $state->logger->debug( |
| 80 | 'ensureFlowRevision status isGood: ' . var_export( $status->isGood(), true ) |
| 81 | ); |
| 82 | |
| 83 | if ( $status->isOK() ) { |
| 84 | $ensureValue = $status->getValue(); |
| 85 | $revisionRecord = $ensureValue['revision-record']; |
| 86 | $state->logger->debug( |
| 87 | 'ensureFlowRevision already-existed: ' . var_export( |
| 88 | $ensureValue['already-existed'], |
| 89 | true |
| 90 | ) |
| 91 | ); |
| 92 | $revisionId = $revisionRecord->getId(); |
| 93 | $pageId = $revisionRecord->getPageId(); |
| 94 | $state->logger->debug( |
| 95 | "ensureFlowRevision revision ID: $revisionId, page ID: $pageId" |
| 96 | ); |
| 97 | |
| 98 | $state->put( $state->boardWorkflow, [] ); |
| 99 | } else { |
| 100 | throw new ImportException( "ensureFlowRevision failed to create the Flow board" ); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | $imported = $failed = 0; |
| 105 | $header = $this->importSource->getHeader(); |
| 106 | try { |
| 107 | $state->begin(); |
| 108 | $this->importHeader( $state, $header ); |
| 109 | $state->commit(); |
| 110 | $state->postprocessor->afterHeaderImported( $state, $header ); |
| 111 | $imported++; |
| 112 | } catch ( ImportSourceStoreException $e ) { |
| 113 | // errors from the source store are more serious and should |
| 114 | // not just be logged and swallowed. This may indicate that |
| 115 | // we are not properly recording progress. |
| 116 | $state->rollback(); |
| 117 | throw $e; |
| 118 | } catch ( \Exception $e ) { |
| 119 | $state->rollback(); |
| 120 | MWExceptionHandler::logException( $e ); |
| 121 | $state->logger->error( 'Failed importing header: ' . $header->getObjectKey() ); |
| 122 | $state->logger->error( (string)$e ); |
| 123 | $failed++; |
| 124 | } |
| 125 | |
| 126 | foreach ( $this->importSource->getTopics() as $topic ) { |
| 127 | try { |
| 128 | // @todo this may be too large of a chunk for one commit, unsure |
| 129 | $state->begin(); |
| 130 | $topicState = $this->getTopicState( $state, $topic ); |
| 131 | $this->importTopic( $topicState, $topic ); |
| 132 | $state->commit(); |
| 133 | $state->postprocessor->afterTopicImported( $topicState, $topic ); |
| 134 | $state->clearManagerGroup(); |
| 135 | |
| 136 | $imported++; |
| 137 | } catch ( ImportSourceStoreException $e ) { |
| 138 | // errors from the source store are more serious and shuld |
| 139 | // not juts be logged and swallowed. This may indicate that |
| 140 | // we are not properly recording progress. |
| 141 | $state->rollback(); |
| 142 | throw $e; |
| 143 | } catch ( \Exception $e ) { |
| 144 | $state->rollback(); |
| 145 | MWExceptionHandler::logException( $e ); |
| 146 | $state->logger->error( 'Failed importing topic: ' . $topic->getObjectKey() ); |
| 147 | $state->logger->error( (string)$e ); |
| 148 | $failed++; |
| 149 | } |
| 150 | } |
| 151 | $state->logger->info( "Imported $imported items, failed $failed" ); |
| 152 | |
| 153 | return $failed === 0; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * @param PageImportState $pageState |
| 158 | * @param IImportHeader $importHeader |
| 159 | */ |
| 160 | public function importHeader( PageImportState $pageState, IImportHeader $importHeader ) { |
| 161 | $pageState->logger->info( 'Importing header' ); |
| 162 | if ( !$importHeader->getRevisions()->valid() ) { |
| 163 | $pageState->logger->info( 'no revisions located for header' ); |
| 164 | |
| 165 | // No revisions |
| 166 | return; |
| 167 | } |
| 168 | |
| 169 | /* |
| 170 | * We don't need $pageState->getImportedId( $importHeader ) here, there |
| 171 | * can only be 1 header per workflow and we already know the workflow, |
| 172 | * might as well query it from the workflow instead of using the id from |
| 173 | * the source store. |
| 174 | * reason I prefer not to use source store is that a header import is |
| 175 | * incomplete (it doesn't import full history, just the last revision. |
| 176 | */ |
| 177 | $existingId = $pageState->boardWorkflow->getId(); |
| 178 | if ( $existingId && $pageState->getTopRevision( 'Header', $existingId ) ) { |
| 179 | $pageState->logger->info( 'header previously imported' ); |
| 180 | |
| 181 | return; |
| 182 | } |
| 183 | |
| 184 | $revisions = $this->importObjectWithHistory( |
| 185 | $importHeader, |
| 186 | static function ( IObjectRevision $rev ) use ( $pageState ) { |
| 187 | return Header::create( |
| 188 | $pageState->boardWorkflow, |
| 189 | $pageState->createUser( $rev->getAuthor() ), |
| 190 | $rev->getText(), |
| 191 | 'wikitext', |
| 192 | 'create-header' |
| 193 | ); |
| 194 | }, |
| 195 | 'edit-header', |
| 196 | $pageState, |
| 197 | $pageState->boardWorkflow->getArticleTitle() |
| 198 | ); |
| 199 | |
| 200 | $pageState->put( |
| 201 | $revisions, |
| 202 | [ |
| 203 | 'workflow' => $pageState->boardWorkflow, |
| 204 | ] |
| 205 | ); |
| 206 | $pageState->recordAssociation( |
| 207 | reset( $revisions )->getCollectionId(), |
| 208 | $importHeader |
| 209 | ); |
| 210 | |
| 211 | $pageState->logger->info( 'Imported ' . count( $revisions ) . ' revisions for header' ); |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * @param TopicImportState $topicState |
| 216 | * @param IImportTopic $importTopic |
| 217 | */ |
| 218 | public function importTopic( TopicImportState $topicState, IImportTopic $importTopic ) { |
| 219 | $summary = $importTopic->getTopicSummary(); |
| 220 | if ( $summary ) { |
| 221 | $this->importSummary( $topicState, $summary ); |
| 222 | } |
| 223 | |
| 224 | foreach ( $importTopic->getReplies() as $post ) { |
| 225 | $this->importPost( $topicState, $post, $topicState->topicTitle ); |
| 226 | } |
| 227 | |
| 228 | $topicState->commitLastUpdated(); |
| 229 | $topicState->parent->logger->info( "Finished importing topic" ); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * @param PageImportState $state |
| 234 | * @param IImportTopic $importTopic |
| 235 | * @return TopicImportState |
| 236 | */ |
| 237 | protected function getTopicState( PageImportState $state, IImportTopic $importTopic ) { |
| 238 | // Check if it's already been imported |
| 239 | $topicState = $this->getExistingTopicState( $state, $importTopic ); |
| 240 | if ( $topicState ) { |
| 241 | $state->logger->info( |
| 242 | 'Continuing import to ' . $topicState->topicWorkflow->getArticleTitle()->getPrefixedText() |
| 243 | ); |
| 244 | |
| 245 | return $topicState; |
| 246 | } else { |
| 247 | return $this->createTopicState( $state, $importTopic ); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | protected function getFirstRevision( IRevisionableObject $obj ) { |
| 252 | $iterator = $obj->getRevisions(); |
| 253 | $iterator->rewind(); |
| 254 | |
| 255 | return $iterator->current(); |
| 256 | } |
| 257 | |
| 258 | /** |
| 259 | * @param PageImportState $state |
| 260 | * @param IImportTopic $importTopic |
| 261 | * @return TopicImportState |
| 262 | */ |
| 263 | protected function createTopicState( PageImportState $state, IImportTopic $importTopic ) { |
| 264 | $state->logger->info( 'Importing new topic' ); |
| 265 | $topicWorkflow = Workflow::create( |
| 266 | 'topic', |
| 267 | $state->boardWorkflow->getArticleTitle() |
| 268 | ); |
| 269 | $state->setWorkflowTimestamp( |
| 270 | $topicWorkflow, |
| 271 | $this->getFirstRevision( $importTopic )->getTimestamp() |
| 272 | ); |
| 273 | |
| 274 | $topicListEntry = TopicListEntry::create( |
| 275 | $state->boardWorkflow, |
| 276 | $topicWorkflow |
| 277 | ); |
| 278 | |
| 279 | $titleRevisions = $this->importObjectWithHistory( |
| 280 | $importTopic, |
| 281 | static function ( IObjectRevision $rev ) use ( $state, $topicWorkflow ) { |
| 282 | return PostRevision::createTopicPost( |
| 283 | $topicWorkflow, |
| 284 | $state->createUser( $rev->getAuthor() ), |
| 285 | $rev->getText() |
| 286 | ); |
| 287 | }, |
| 288 | 'edit-title', |
| 289 | $state, |
| 290 | $topicWorkflow->getArticleTitle() |
| 291 | ); |
| 292 | |
| 293 | // @phan-suppress-next-line PhanTypeMismatchArgumentSuperType |
| 294 | $topicState = new TopicImportState( $state, $topicWorkflow, end( $titleRevisions ) ); |
| 295 | $topicMetadata = $topicState->getMetadata(); |
| 296 | |
| 297 | // This should all match the order in TopicListBlock->commit (board/ |
| 298 | // discussion workflow is inserted before this method is called). |
| 299 | |
| 300 | $state->put( $topicWorkflow, $topicMetadata ); |
| 301 | // TLE must be before topic title, otherwise you get an error importing the Topic Title |
| 302 | // Flow/includes/Data/Index/BoardHistoryIndex.php: |
| 303 | // No topic list contains topic XXX, called for revision YYY |
| 304 | $state->put( $topicListEntry, $topicMetadata ); |
| 305 | $state->put( $titleRevisions, $topicMetadata ); |
| 306 | |
| 307 | $state->recordAssociation( $topicWorkflow->getId(), $importTopic ); |
| 308 | |
| 309 | $state->logger->info( |
| 310 | 'Finished importing topic title with ' . count( $titleRevisions ) . ' revisions' |
| 311 | ); |
| 312 | |
| 313 | return $topicState; |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * @param PageImportState $state |
| 318 | * @param IImportTopic $importTopic |
| 319 | * @return TopicImportState|null |
| 320 | */ |
| 321 | protected function getExistingTopicState( PageImportState $state, IImportTopic $importTopic ) { |
| 322 | $topicId = $state->getImportedId( $importTopic ); |
| 323 | if ( $topicId ) { |
| 324 | $topicWorkflow = $state->get( 'Workflow', $topicId ); |
| 325 | $topicTitle = $state->getTopRevision( 'PostRevision', $topicId ); |
| 326 | if ( $topicWorkflow instanceof Workflow && $topicTitle instanceof PostRevision ) { |
| 327 | return new TopicImportState( $state, $topicWorkflow, $topicTitle ); |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | return null; |
| 332 | } |
| 333 | |
| 334 | /** |
| 335 | * @param TopicImportState $state |
| 336 | * @param IImportSummary $importSummary |
| 337 | */ |
| 338 | public function importSummary( TopicImportState $state, IImportSummary $importSummary ) { |
| 339 | $state->parent->logger->info( "Importing summary" ); |
| 340 | $existingId = $state->parent->getImportedId( $importSummary ); |
| 341 | if ( $existingId ) { |
| 342 | $summary = $state->parent->getTopRevision( 'PostSummary', $existingId ); |
| 343 | if ( $summary ) { |
| 344 | $state->recordUpdateTime( $summary->getRevisionId() ); |
| 345 | $state->parent->logger->info( "Summary previously imported" ); |
| 346 | |
| 347 | return; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | $revisions = $this->importObjectWithHistory( |
| 352 | $importSummary, |
| 353 | static function ( IObjectRevision $rev ) use ( $state ) { |
| 354 | return PostSummary::create( |
| 355 | $state->topicWorkflow->getArticleTitle(), |
| 356 | $state->topicTitle, |
| 357 | $state->parent->createUser( $rev->getAuthor() ), |
| 358 | $rev->getText(), |
| 359 | 'wikitext', |
| 360 | 'create-topic-summary' |
| 361 | ); |
| 362 | }, |
| 363 | 'edit-topic-summary', |
| 364 | $state->parent, |
| 365 | $state->topicWorkflow->getArticleTitle() |
| 366 | ); |
| 367 | |
| 368 | $metadata = [ |
| 369 | 'workflow' => $state->topicWorkflow, |
| 370 | ]; |
| 371 | $state->parent->put( $revisions, $metadata ); |
| 372 | $state->parent->recordAssociation( |
| 373 | reset( $revisions )->getCollectionId(), // Summary ID |
| 374 | $importSummary |
| 375 | ); |
| 376 | |
| 377 | $state->recordUpdateTime( end( $revisions )->getRevisionId() ); |
| 378 | $state->parent->logger->info( |
| 379 | "Finished importing summary with " . count( $revisions ) . " revisions" |
| 380 | ); |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * @param TopicImportState $state |
| 385 | * @param IImportPost $post |
| 386 | * @param PostRevision $replyTo |
| 387 | * @param string $logPrefix |
| 388 | * @suppress PhanTypeMismatchArgument,PhanUndeclaredMethod |
| 389 | */ |
| 390 | public function importPost( TopicImportState $state, IImportPost $post, PostRevision $replyTo, $logPrefix = '' ) { |
| 391 | $state->parent->logger->info( $logPrefix . "Importing post" ); |
| 392 | $postId = $state->parent->getImportedId( $post ); |
| 393 | $topRevision = false; |
| 394 | if ( $postId ) { |
| 395 | $topRevision = $state->parent->getTopRevision( 'PostRevision', $postId ); |
| 396 | } |
| 397 | |
| 398 | if ( $topRevision ) { |
| 399 | $state->parent->logger->info( $logPrefix . "Post previously imported" ); |
| 400 | } else { |
| 401 | $replyRevisions = $this->importObjectWithHistory( |
| 402 | $post, |
| 403 | static function ( IObjectRevision $rev ) use ( $replyTo, $state ) { |
| 404 | return $replyTo->reply( |
| 405 | $state->topicWorkflow, |
| 406 | $state->parent->createUser( $rev->getAuthor() ), |
| 407 | $rev->getText(), |
| 408 | 'wikitext' |
| 409 | ); |
| 410 | }, |
| 411 | 'edit-post', |
| 412 | $state->parent, |
| 413 | $state->topicWorkflow->getArticleTitle() |
| 414 | ); |
| 415 | |
| 416 | $topRevision = end( $replyRevisions ); |
| 417 | |
| 418 | $metadata = [ |
| 419 | 'workflow' => $state->topicWorkflow, |
| 420 | 'board-workflow' => $state->parent->boardWorkflow, |
| 421 | 'topic-title' => $state->topicTitle, |
| 422 | 'reply-to' => $replyTo, |
| 423 | ]; |
| 424 | |
| 425 | $state->parent->put( $replyRevisions, $metadata ); |
| 426 | $state->parent->recordAssociation( |
| 427 | $topRevision->getPostId(), |
| 428 | $post |
| 429 | ); |
| 430 | $state->parent->logger->info( |
| 431 | $logPrefix . "Finished importing post with " . count( |
| 432 | $replyRevisions |
| 433 | ) . " revisions" |
| 434 | ); |
| 435 | $state->parent->postprocessor->afterPostImported( $state, $post, $topRevision ); |
| 436 | } |
| 437 | |
| 438 | $state->recordUpdateTime( $topRevision->getRevisionId() ); |
| 439 | |
| 440 | foreach ( $post->getReplies() as $subReply ) { |
| 441 | $this->importPost( $state, $subReply, $topRevision, $logPrefix . ' ' ); |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | /** |
| 446 | * Imports an object with all its revisions |
| 447 | * |
| 448 | * @param IRevisionableObject $object Object to import. |
| 449 | * @param callable $importFirstRevision Function which, given the appropriate import revision, |
| 450 | * creates the Flow revision. |
| 451 | * @param string $editChangeType The Flow change type (from FlowActions.php) for each new operation. |
| 452 | * @param PageImportState $state State of the import operation. |
| 453 | * @param Title $title Title content is rendered against |
| 454 | * @return AbstractRevision[] Objects to insert into the database. |
| 455 | * @throws ImportException |
| 456 | */ |
| 457 | public function importObjectWithHistory( |
| 458 | IRevisionableObject $object, |
| 459 | $importFirstRevision, |
| 460 | $editChangeType, |
| 461 | PageImportState $state, |
| 462 | Title $title |
| 463 | ) { |
| 464 | $insertObjects = []; |
| 465 | $revisions = $object->getRevisions(); |
| 466 | $revisions->rewind(); |
| 467 | |
| 468 | if ( !$revisions->valid() ) { |
| 469 | throw new ImportException( "Attempted to import empty history" ); |
| 470 | } |
| 471 | |
| 472 | $importRevision = $revisions->current(); |
| 473 | /** @var AbstractRevision $lastRevision */ |
| 474 | $insertObjects[] = $lastRevision = $importFirstRevision( $importRevision ); |
| 475 | $lastTimestamp = $importRevision->getTimestamp(); |
| 476 | |
| 477 | $state->setRevisionTimestamp( $lastRevision, $lastTimestamp ); |
| 478 | $state->recordAssociation( $lastRevision->getRevisionId(), $importRevision ); |
| 479 | $state->recordAssociation( $lastRevision->getCollectionId(), $importRevision ); |
| 480 | |
| 481 | $revisions->next(); |
| 482 | while ( $revisions->valid() ) { |
| 483 | $importRevision = $revisions->current(); |
| 484 | $insertObjects[] = $lastRevision = $lastRevision->newNextRevision( |
| 485 | $state->createUser( $importRevision->getAuthor() ), |
| 486 | $importRevision->getText(), |
| 487 | 'wikitext', |
| 488 | $editChangeType, |
| 489 | $title |
| 490 | ); |
| 491 | |
| 492 | $importTimestampObj = new MWTimestamp( $importRevision->getTimestamp() ); |
| 493 | $lastTimestampObj = new MWTimestamp( $lastTimestamp ); |
| 494 | $timeDiff = $lastTimestampObj->diff( $importTimestampObj ); |
| 495 | // If $import - last < 0 |
| 496 | if ( $timeDiff->invert ) { |
| 497 | throw new ImportException( "Revision listing is not sorted from oldest to newest" ); |
| 498 | } |
| 499 | |
| 500 | $lastTimestamp = $importRevision->getTimestamp(); |
| 501 | $state->setRevisionTimestamp( $lastRevision, $lastTimestamp ); |
| 502 | $state->recordAssociation( $lastRevision->getRevisionId(), $importRevision ); |
| 503 | $revisions->next(); |
| 504 | } |
| 505 | |
| 506 | return $insertObjects; |
| 507 | } |
| 508 | } |