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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Maintenance; |
| 4 | |
| 5 | use CirrusSearch\Connection; |
| 6 | use CirrusSearch\SearchConfig; |
| 7 | use WikiMap; |
| 8 | |
| 9 | $IP = getenv( 'MW_INSTALL_PATH' ); |
| 10 | if ( $IP === false ) { |
| 11 | $IP = __DIR__ . '/../../..'; |
| 12 | } |
| 13 | require_once "$IP/maintenance/Maintenance.php"; |
| 14 | require_once __DIR__ . '/../includes/Maintenance/Maintenance.php'; |
| 15 | |
| 16 | /** |
| 17 | * Reports index aliases that CirrusSearch owns for this wiki. |
| 18 | * |
| 19 | * This information can be used as part of a more complete solution to |
| 20 | * account for the indices that should exist on an elasticsearch cluster. |
| 21 | * The output here is strictly related to the configuration of CirrusSearch |
| 22 | * and does not reference state of any live cluster. |
| 23 | * |
| 24 | * CirrusSearch almost always refers to indices by alias, the only time |
| 25 | * when CirrusSearch owns an index without an alias is during index |
| 26 | * creation and reindexing. A reasonable proxy to detect this would be |
| 27 | * updates in the last few minutes. If CirrusSearch owns an index but |
| 28 | * does not have an alias yet it will be under constant indexing load. |
| 29 | */ |
| 30 | class ExpectedIndices extends Maintenance { |
| 31 | |
| 32 | public function __construct() { |
| 33 | parent::__construct(); |
| 34 | $this->addDescription( 'Report index alias that CirrusSearch owns.' ); |
| 35 | $this->addOption( 'oneline', 'Dont pretty print the output', false, false ); |
| 36 | } |
| 37 | |
| 38 | public function execute() { |
| 39 | $clusters = $this->requestedClusters( |
| 40 | $this->getOption( 'cluster', null ) ); |
| 41 | echo \FormatJson::encode( [ |
| 42 | 'dbname' => WikiMap::getCurrentWikiId(), |
| 43 | 'clusters' => $this->clusterInfo( $clusters ), |
| 44 | ], !$this->getOption( 'oneline' ) ), "\n"; |
| 45 | } |
| 46 | |
| 47 | private function clusterInfo( array $clusters ): array { |
| 48 | $config = $this->getSearchConfig(); |
| 49 | $assignment = $config->getClusterAssignment(); |
| 50 | $output = []; |
| 51 | foreach ( $clusters as $clusterName ) { |
| 52 | $output[$clusterName] = [ |
| 53 | 'aliases' => $this->allIndexNames( |
| 54 | Connection::getPool( $config, $clusterName ) ), |
| 55 | 'group' => $assignment->getCrossClusterName(), |
| 56 | // Group should satisfy most automated use cases, server list |
| 57 | // is more for debugging or verifying. |
| 58 | 'connection' => $assignment->getServerList( $clusterName ) |
| 59 | ]; |
| 60 | } |
| 61 | return $output; |
| 62 | } |
| 63 | |
| 64 | private function requestedClusters( ?string $requested ): array { |
| 65 | $assignment = $this->getSearchConfig()->getClusterAssignment(); |
| 66 | if ( $requested !== null ) { |
| 67 | // Single cluster |
| 68 | return $assignment->canWriteToCluster( $requested ) |
| 69 | ? [ $requested ] |
| 70 | : []; |
| 71 | } |
| 72 | return $assignment->getWritableClusters(); |
| 73 | } |
| 74 | |
| 75 | private function allIndexNames( Connection $conn ): array { |
| 76 | $config = $this->getSearchConfig(); |
| 77 | $baseName = $config->get( SearchConfig::INDEX_BASE_NAME ); |
| 78 | $suffixes = $conn->getAllIndexSuffixes( null ); |
| 79 | if ( $config->isCompletionSuggesterEnabled() ) { |
| 80 | $suffixes[] = Connection::TITLE_SUGGEST_INDEX_SUFFIX; |
| 81 | } |
| 82 | $output = []; |
| 83 | foreach ( $suffixes as $indexSuffix ) { |
| 84 | $output[] = $conn->getIndexName( $baseName, $indexSuffix ); |
| 85 | } |
| 86 | return $output; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | $maintClass = ExpectedIndices::class; |
| 91 | require_once RUN_MAINTENANCE_IF_MAIN; |