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| 1 | <?php |
| 2 | |
| 3 | namespace Flow; |
| 4 | |
| 5 | use Flow\Data\ManagerGroup; |
| 6 | use Flow\Exception\FlowException; |
| 7 | use Flow\Model\Header; |
| 8 | use Flow\Model\Workflow; |
| 9 | use MediaWiki\Title\Title; |
| 10 | use MediaWiki\User\User; |
| 11 | use MediaWiki\WikiMap\WikiMap; |
| 12 | use Wikimedia\Rdbms\IDatabase; |
| 13 | |
| 14 | class BoardMover { |
| 15 | /** |
| 16 | * @var DbFactory |
| 17 | */ |
| 18 | protected $dbFactory; |
| 19 | |
| 20 | /** |
| 21 | * @var ManagerGroup |
| 22 | */ |
| 23 | protected $storage; |
| 24 | |
| 25 | /** |
| 26 | * @var User |
| 27 | */ |
| 28 | protected $nullEditUser; |
| 29 | |
| 30 | /** |
| 31 | * @var IDatabase|null |
| 32 | */ |
| 33 | protected $dbw; |
| 34 | |
| 35 | public function __construct( DbFactory $dbFactory, ManagerGroup $storage, User $nullEditUser ) { |
| 36 | $this->dbFactory = $dbFactory; |
| 37 | $this->storage = $storage; |
| 38 | $this->nullEditUser = $nullEditUser; |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Starts a transaction on the Flow database. |
| 43 | */ |
| 44 | protected function begin() { |
| 45 | // All reads must go through primary to help ensure consistency |
| 46 | $this->dbFactory->forcePrimary(); |
| 47 | |
| 48 | // Open a transaction, this will be closed from self::commit. |
| 49 | $this->dbw = $this->dbFactory->getDB( DB_PRIMARY ); |
| 50 | $this->dbw->startAtomic( __CLASS__ ); |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Collects the workflow and header (if it exists) and puts them into the database. Does |
| 55 | * not commit yet. It is intended for move to be called for each move, and commit |
| 56 | * to be called at the end the core transaction, via a hook. |
| 57 | * |
| 58 | * @param int $oldPageId Page ID before move/change |
| 59 | * @param Title $newPage Page after move/change |
| 60 | * @throws \Flow\Exception\DataModelException |
| 61 | * @throws FlowException |
| 62 | */ |
| 63 | public function move( $oldPageId, Title $newPage ) { |
| 64 | if ( $this->dbw === null ) { |
| 65 | $this->begin(); |
| 66 | } |
| 67 | |
| 68 | // @todo this loads every topic workflow this board has ever seen, |
| 69 | // would prefer to update db directly but that won't work due to |
| 70 | // the caching layer not getting updated. After dropping Flow\Data\Index\* |
| 71 | // revisit this. |
| 72 | /** @var Workflow[] $found */ |
| 73 | $found = $this->storage->find( 'Workflow', [ |
| 74 | 'workflow_wiki' => WikiMap::getCurrentWikiId(), |
| 75 | 'workflow_page_id' => $oldPageId, |
| 76 | ] ); |
| 77 | if ( !$found ) { |
| 78 | throw new FlowException( "Could not locate workflow for page ID $oldPageId" ); |
| 79 | } |
| 80 | |
| 81 | $discussionWorkflow = null; |
| 82 | foreach ( $found as $workflow ) { |
| 83 | if ( $workflow->getType() === 'discussion' ) { |
| 84 | $discussionWorkflow = $workflow; |
| 85 | } |
| 86 | $workflow->updateFromPageId( $oldPageId, $newPage ); |
| 87 | $this->storage->put( $workflow, [] ); |
| 88 | } |
| 89 | if ( $discussionWorkflow === null ) { |
| 90 | throw new FlowException( "Main discussion workflow for page ID $oldPageId not found" ); |
| 91 | } |
| 92 | |
| 93 | /** @var Header[] $found */ |
| 94 | $found = $this->storage->find( |
| 95 | 'Header', |
| 96 | [ 'rev_type_id' => $discussionWorkflow->getId() ], |
| 97 | [ 'sort' => 'rev_id', 'order' => 'DESC', 'limit' => 1 ] |
| 98 | ); |
| 99 | |
| 100 | if ( $found ) { |
| 101 | $header = reset( $found ); |
| 102 | $nextHeader = $header->newNextRevision( |
| 103 | $this->nullEditUser, |
| 104 | $header->getContentRaw(), |
| 105 | $header->getContentFormat(), |
| 106 | 'edit-header', |
| 107 | $newPage |
| 108 | ); |
| 109 | if ( $header !== $nextHeader ) { |
| 110 | $this->storage->put( $nextHeader, [ |
| 111 | 'workflow' => $discussionWorkflow, |
| 112 | ] ); |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * @throws Exception\FlowException |
| 119 | */ |
| 120 | public function commit() { |
| 121 | if ( $this->dbw === null ) { |
| 122 | return; |
| 123 | } |
| 124 | |
| 125 | try { |
| 126 | $this->dbw->endAtomic( __CLASS__ ); |
| 127 | } catch ( \Exception $e ) { |
| 128 | $this->dbw->rollback( __METHOD__ ); |
| 129 | throw $e; |
| 130 | } |
| 131 | |
| 132 | // reset dbw (which is used to check if a move transaction is already in |
| 133 | // progress, which is no longer the case) |
| 134 | $this->dbw = null; |
| 135 | } |
| 136 | } |