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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch; |
| 4 | |
| 5 | use MediaWiki\Title\Title; |
| 6 | |
| 7 | class SearchRequestLog extends BaseRequestLog { |
| 8 | /** |
| 9 | * @var bool |
| 10 | */ |
| 11 | private $cached = false; |
| 12 | |
| 13 | /** |
| 14 | * @var \Elastica\Client |
| 15 | */ |
| 16 | private $client; |
| 17 | |
| 18 | /** |
| 19 | * @var \Elastica\Request|null The elasticsearch request for this log |
| 20 | */ |
| 21 | protected $request; |
| 22 | |
| 23 | /** |
| 24 | * @var \Elastica\Request|null The elasticsearch request issued prior to |
| 25 | * this log, used to protect against accidentaly using the wrong request. |
| 26 | */ |
| 27 | private $lastRequest; |
| 28 | |
| 29 | /** |
| 30 | * @var \Elastica\Response|null The elasticsearch response for this log |
| 31 | */ |
| 32 | protected $response; |
| 33 | |
| 34 | /** |
| 35 | * @var \Elastica\Response|null The elasticsearch response issued prior to |
| 36 | * this log, used to protect against accidentaly using the wrong response. |
| 37 | */ |
| 38 | private $lastResponse; |
| 39 | |
| 40 | /** |
| 41 | * @var int[]|null (null if unknown) |
| 42 | */ |
| 43 | private $namespaces; |
| 44 | |
| 45 | /** |
| 46 | * @param \Elastica\Client $client |
| 47 | * @param string $description |
| 48 | * @param string $queryType |
| 49 | * @param array $extra |
| 50 | * @param int[]|null $namespaces list of known namespaces to query, null if unknown or inappropriate |
| 51 | */ |
| 52 | public function __construct( \Elastica\Client $client, $description, $queryType, array $extra = [], array $namespaces = null ) { |
| 53 | parent::__construct( $description, $queryType, $extra ); |
| 54 | $this->client = $client; |
| 55 | $this->lastRequest = $client->getLastRequest(); |
| 56 | $this->lastResponse = $client->getLastResponse(); |
| 57 | $this->namespaces = $namespaces; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * @param string[] $extra |
| 62 | */ |
| 63 | public function setCachedResult( array $extra ) { |
| 64 | $this->extra += $extra; |
| 65 | $this->cached = true; |
| 66 | } |
| 67 | |
| 68 | public function finish() { |
| 69 | if ( $this->request || $this->response ) { |
| 70 | throw new \RuntimeException( 'Finishing a log more than once' ); |
| 71 | } |
| 72 | parent::finish(); |
| 73 | $request = $this->client->getLastRequest(); |
| 74 | $this->request = $request === $this->lastRequest ? null : $request; |
| 75 | $this->lastRequest = null; |
| 76 | $response = $this->client->getLastResponse(); |
| 77 | $this->response = $response === $this->lastResponse ? null : $response; |
| 78 | $this->lastResponse = null; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * @return bool |
| 83 | */ |
| 84 | public function isCachedResponse() { |
| 85 | return $this->cached; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * @return int |
| 90 | */ |
| 91 | public function getElasticTookMs() { |
| 92 | if ( !$this->response ) { |
| 93 | return -1; |
| 94 | } |
| 95 | $data = $this->response->getData(); |
| 96 | |
| 97 | return $data['took'] ?? -1; |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * @return array |
| 102 | */ |
| 103 | public function getLogVariables() { |
| 104 | $vars = [ |
| 105 | 'queryType' => $this->queryType, |
| 106 | 'tookMs' => $this->getTookMs(), |
| 107 | ] + $this->extra; |
| 108 | |
| 109 | if ( !$this->request || !$this->response ) { |
| 110 | // @todo this is probably incomplete |
| 111 | return $vars; |
| 112 | } |
| 113 | |
| 114 | $index = explode( '/', $this->request->getPath() ); |
| 115 | $vars['index'] = $index[0]; |
| 116 | if ( $this->namespaces !== null ) { |
| 117 | $vars['namespaces'] = $this->namespaces; |
| 118 | } |
| 119 | |
| 120 | return $this->extractRequestVariables( $this->request->getData() ) + |
| 121 | $this->extractResponseVariables( $this->response->getData() ) + |
| 122 | // $vars must come *after* extractResponseVariables, because items |
| 123 | // like 'suggestion' override data provided in $this->extra |
| 124 | $vars; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * @return array[] |
| 129 | */ |
| 130 | public function getRequests() { |
| 131 | $vars = $this->getLogVariables(); |
| 132 | if ( $this->response ) { |
| 133 | $vars['hits'] = $this->extractHits( $this->response->getData() ); |
| 134 | } |
| 135 | |
| 136 | return [ $vars ]; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * @param array $query |
| 141 | * @return array |
| 142 | */ |
| 143 | protected function extractRequestVariables( $query ) { |
| 144 | if ( !is_array( $query ) ) { |
| 145 | // @todo log something and verify that this can still happen? |
| 146 | return []; |
| 147 | } |
| 148 | |
| 149 | $vars = [ |
| 150 | 'hitsOffset' => $query['from'] ?? 0, |
| 151 | ]; |
| 152 | if ( !empty( $query['suggest'] ) ) { |
| 153 | $vars['suggestionRequested'] = true; |
| 154 | } else { |
| 155 | $vars['suggestionRequested'] = false; |
| 156 | } |
| 157 | |
| 158 | return $vars; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * @param array $responseData |
| 163 | * @return array |
| 164 | */ |
| 165 | protected function extractResponseVariables( $responseData ) { |
| 166 | if ( !is_array( $responseData ) ) { |
| 167 | // No known offenders, but just in case... |
| 168 | return []; |
| 169 | } |
| 170 | $vars = []; |
| 171 | if ( isset( $responseData['took'] ) ) { |
| 172 | $vars['elasticTookMs'] = $responseData['took']; |
| 173 | } |
| 174 | $hitsTotal = $responseData['hits']['total'] ?? null; |
| 175 | if ( $hitsTotal !== null ) { |
| 176 | // BC for ES6 |
| 177 | if ( is_int( $hitsTotal ) ) { |
| 178 | $vars['hitsTotal'] = $hitsTotal; |
| 179 | } else { |
| 180 | Util::setIfDefined( $hitsTotal, 'value', $vars, 'hitsTotal' ); |
| 181 | } |
| 182 | } |
| 183 | if ( isset( $responseData['hits']['max_score'] ) ) { |
| 184 | $vars['maxScore'] = $responseData['hits']['max_score']; |
| 185 | } |
| 186 | if ( isset( $responseData['hits']['hits'] ) ) { |
| 187 | $vars['hitsReturned'] = count( $responseData['hits']['hits'] ); |
| 188 | } |
| 189 | if ( isset( $responseData['suggest']['suggest'][0]['options'][0]['text'] ) ) { |
| 190 | $vars['suggestion'] = $responseData['suggest']['suggest'][0]['options'][0]['text']; |
| 191 | } |
| 192 | |
| 193 | // in case of failures from Elastica |
| 194 | if ( isset( $responseData['message'] ) ) { |
| 195 | $vars['error_message'] = $responseData['message']; |
| 196 | } |
| 197 | |
| 198 | return $vars; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * @param array $responseData |
| 203 | * @return array[] |
| 204 | */ |
| 205 | protected function extractHits( array $responseData ) { |
| 206 | $hits = []; |
| 207 | if ( isset( $responseData['hits']['hits'] ) ) { |
| 208 | foreach ( $responseData['hits']['hits'] as $hit ) { |
| 209 | if ( !isset( $hit['_source']['namespace'] ) |
| 210 | || !isset( $hit['_source']['title'] ) |
| 211 | ) { |
| 212 | // This is probably a query that does not return pages like |
| 213 | // geo or namespace queries. |
| 214 | // @todo Should these get their own request logging class? |
| 215 | continue; |
| 216 | } |
| 217 | // duplication of work...this happens in the transformation |
| 218 | // stage but we can't see that here...Perhaps we instead attach |
| 219 | // this data at a later stage like CompletionSuggester? |
| 220 | $title = Title::makeTitle( $hit['_source']['namespace'], $hit['_source']['title'] ); |
| 221 | $hits[] = [ |
| 222 | 'title' => (string)$title, |
| 223 | 'index' => $hit['_index'] ?? "", |
| 224 | 'pageId' => $hit['_id'] ?? -1, |
| 225 | 'score' => $hit['_score'] ?? -1.0, |
| 226 | ]; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | return $hits; |
| 231 | } |
| 232 | } |