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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Maintenance\Validators; |
| 4 | |
| 5 | use CirrusSearch\Maintenance\ConfigUtils; |
| 6 | use CirrusSearch\Maintenance\Printer; |
| 7 | use Elastica\Client; |
| 8 | use MediaWiki\Language\RawMessage; |
| 9 | use MediaWiki\Status\Status; |
| 10 | |
| 11 | abstract class IndexAliasValidator extends Validator { |
| 12 | /** |
| 13 | * @var Client |
| 14 | */ |
| 15 | protected $client; |
| 16 | |
| 17 | /** |
| 18 | * @var string |
| 19 | */ |
| 20 | protected $aliasName; |
| 21 | |
| 22 | /** |
| 23 | * @var string |
| 24 | */ |
| 25 | protected $specificIndexName; |
| 26 | |
| 27 | /** |
| 28 | * @var bool |
| 29 | */ |
| 30 | private $startOver; |
| 31 | |
| 32 | /** |
| 33 | * @var array |
| 34 | */ |
| 35 | protected $create = []; |
| 36 | |
| 37 | /** |
| 38 | * @var array |
| 39 | */ |
| 40 | protected $remove = []; |
| 41 | |
| 42 | /** |
| 43 | * @var ConfigUtils |
| 44 | */ |
| 45 | private $configUtils; |
| 46 | |
| 47 | /** |
| 48 | * @param Client $client |
| 49 | * @param string $aliasName |
| 50 | * @param string $specificIndexName |
| 51 | * @param bool $startOver |
| 52 | * @param Printer $out |
| 53 | */ |
| 54 | public function __construct( Client $client, $aliasName, $specificIndexName, $startOver, Printer $out ) { |
| 55 | parent::__construct( $out ); |
| 56 | |
| 57 | $this->client = $client; |
| 58 | $this->aliasName = $aliasName; |
| 59 | $this->specificIndexName = $specificIndexName; |
| 60 | $this->startOver = $startOver; |
| 61 | $this->configUtils = new ConfigUtils( $client, $out ); |
| 62 | } |
| 63 | |
| 64 | public function validate(): Status { |
| 65 | // arrays of aliases to be added/removed |
| 66 | $add = $remove = []; |
| 67 | |
| 68 | $this->outputIndented( "\tValidating $this->aliasName alias..." ); |
| 69 | $sv = $this->configUtils->isIndex( $this->aliasName ); |
| 70 | if ( !$sv->isGood() ) { |
| 71 | return $sv; |
| 72 | } |
| 73 | if ( $sv->getValue() ) { |
| 74 | $this->output( "is an index..." ); |
| 75 | if ( $this->startOver ) { |
| 76 | $this->client->getIndex( $this->aliasName )->delete(); |
| 77 | $this->output( "index removed..." ); |
| 78 | |
| 79 | $add[] = $this->specificIndexName; |
| 80 | } else { |
| 81 | $this->output( "cannot correct!\n" ); |
| 82 | return Status::newFatal( new RawMessage( |
| 83 | "There is currently an index with the name of the alias. Rerun this\n" . |
| 84 | "script with --startOver and it'll remove the index and continue.\n" ) ); |
| 85 | } |
| 86 | } else { |
| 87 | $sv = $this->configUtils->getIndicesWithAlias( $this->aliasName ); |
| 88 | if ( !$sv->isGood() ) { |
| 89 | return $sv; |
| 90 | } |
| 91 | foreach ( $sv->getValue() as $indexName ) { |
| 92 | if ( $indexName === $this->specificIndexName ) { |
| 93 | $this->output( "ok\n" ); |
| 94 | return Status::newGood(); |
| 95 | } elseif ( $this->shouldRemoveFromAlias( $indexName ) ) { |
| 96 | $remove[] = $indexName; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | $add[] = $this->specificIndexName; |
| 101 | } |
| 102 | |
| 103 | return $this->updateIndices( $add, $remove ); |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * @param string $name |
| 108 | * @return bool |
| 109 | */ |
| 110 | abstract protected function shouldRemoveFromAlias( $name ); |
| 111 | |
| 112 | /** |
| 113 | * @param string[] $add Array of indices to add |
| 114 | * @param string[] $remove Array of indices to remove |
| 115 | * @return Status |
| 116 | */ |
| 117 | protected function updateIndices( array $add, array $remove ) { |
| 118 | $remove = array_filter( $remove, function ( $name ) { |
| 119 | return $this->client->getIndex( $name )->exists(); |
| 120 | } ); |
| 121 | if ( $remove ) { |
| 122 | $this->outputIndented( "\tRemoving old indices...\n" ); |
| 123 | foreach ( $remove as $indexName ) { |
| 124 | $this->outputIndented( "\t\t$indexName..." ); |
| 125 | $this->client->getIndex( $indexName )->delete(); |
| 126 | $this->output( "done\n" ); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | return Status::newGood(); |
| 131 | } |
| 132 | } |