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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\PageViewInfo; |
| 4 | |
| 5 | use FormatJson; |
| 6 | use InvalidArgumentException; |
| 7 | use MediaWiki\Http\HttpRequestFactory; |
| 8 | use MWHttpRequest; |
| 9 | use MWTimestamp; |
| 10 | use Psr\Log\LoggerAwareInterface; |
| 11 | use Psr\Log\LoggerInterface; |
| 12 | use Psr\Log\LogLevel; |
| 13 | use Psr\Log\NullLogger; |
| 14 | use RawMessage; |
| 15 | use Status; |
| 16 | use StatusValue; |
| 17 | use Title; |
| 18 | use WebRequest; |
| 19 | |
| 20 | /** |
| 21 | * PageViewService implementation for Wikimedia wikis, using the pageview API |
| 22 | * @see https://wikitech.wikimedia.org/wiki/Analytics/PageviewAPI |
| 23 | */ |
| 24 | class WikimediaPageViewService implements PageViewService, LoggerAwareInterface { |
| 25 | /** @var HttpRequestFactory */ |
| 26 | protected $httpRequestFactory; |
| 27 | /** @var LoggerInterface */ |
| 28 | protected $logger; |
| 29 | |
| 30 | /** @var string */ |
| 31 | protected $endpoint; |
| 32 | /** @var int|false Max number of pages to look up (false for unlimited) */ |
| 33 | protected $lookupLimit; |
| 34 | |
| 35 | /** @var string */ |
| 36 | protected $project; |
| 37 | /** @var string 'all-access', 'desktop', 'mobile-app' or 'mobile-web' */ |
| 38 | protected $access; |
| 39 | /** @var string 'all-agents', 'user', 'spider' or 'bot' */ |
| 40 | protected $agent; |
| 41 | /** @var string 'hourly', 'daily' or 'monthly' */ |
| 42 | protected $granularity = 'daily'; // allowing other options would make the interface too complex |
| 43 | /** @var int UNIX timestamp of 0:00 of the last day with complete data */ |
| 44 | protected $lastCompleteDay; |
| 45 | |
| 46 | /** @var array Cache for getEmptyDateRange() */ |
| 47 | protected $range; |
| 48 | |
| 49 | /** @var WebRequest|string[] The request that asked for this data; see the originalRequest |
| 50 | * parameter of MediaWiki\Http\HttpRequestFactory::request() |
| 51 | */ |
| 52 | protected $originalRequest; |
| 53 | |
| 54 | /** |
| 55 | * @param HttpRequestFactory $httpRequestFactory |
| 56 | * @param string $endpoint Wikimedia pageview API endpoint |
| 57 | * @param array $apiOptions Associative array of API URL parameters |
| 58 | * see https://wikimedia.org/api/rest_v1/#!/Pageviews_data |
| 59 | * project is the only required parameter. Granularity, start and end are not supported. |
| 60 | * @param int|false $lookupLimit Max number of pages to look up (false for unlimited). |
| 61 | * Data will be returned for no more than this many titles in a getPageData() call. |
| 62 | */ |
| 63 | public function __construct( |
| 64 | HttpRequestFactory $httpRequestFactory, |
| 65 | $endpoint, |
| 66 | array $apiOptions, |
| 67 | $lookupLimit |
| 68 | ) { |
| 69 | $this->endpoint = rtrim( $endpoint, '/' ); |
| 70 | $this->lookupLimit = $lookupLimit; |
| 71 | $apiOptions += [ |
| 72 | 'access' => 'all-access', |
| 73 | 'agent' => 'user', |
| 74 | ]; |
| 75 | $this->verifyApiOptions( $apiOptions ); |
| 76 | |
| 77 | $this->project = $apiOptions['project']; |
| 78 | $this->access = $apiOptions['access']; |
| 79 | $this->agent = $apiOptions['agent']; |
| 80 | |
| 81 | // Skip the current day for which only partial information is available |
| 82 | $this->lastCompleteDay = strtotime( '0:0 1 day ago', MWTimestamp::time() ); |
| 83 | |
| 84 | $this->httpRequestFactory = $httpRequestFactory; |
| 85 | $this->logger = new NullLogger(); |
| 86 | } |
| 87 | |
| 88 | public function setLogger( LoggerInterface $logger ) { |
| 89 | $this->logger = $logger; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * @param WebRequest|string[] $originalRequest See the 'originalRequest' parameter of |
| 94 | * MediaWiki\Http\HttpRequestFactory::request(). |
| 95 | */ |
| 96 | public function setOriginalRequest( $originalRequest ) { |
| 97 | $this->originalRequest = $originalRequest; |
| 98 | } |
| 99 | |
| 100 | public function supports( $metric, $scope ) { |
| 101 | if ( $metric === self::METRIC_VIEW ) { |
| 102 | return true; |
| 103 | } elseif ( $metric === self::METRIC_UNIQUE ) { |
| 104 | return $scope === self::SCOPE_SITE && $this->access !== 'mobile-app'; |
| 105 | } |
| 106 | return false; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * @inheritDoc |
| 111 | */ |
| 112 | public function getPageData( array $titles, $days, $metric = self::METRIC_VIEW ) { |
| 113 | if ( $metric !== self::METRIC_VIEW ) { |
| 114 | throw new InvalidArgumentException( 'Invalid metric: ' . $metric ); |
| 115 | } |
| 116 | if ( !$titles ) { |
| 117 | return StatusValue::newGood( [] ); |
| 118 | } elseif ( $this->lookupLimit !== false ) { |
| 119 | $titles = array_slice( $titles, 0, $this->lookupLimit ); |
| 120 | } |
| 121 | if ( $days <= 0 ) { |
| 122 | throw new InvalidArgumentException( 'Invalid days: ' . $days ); |
| 123 | } |
| 124 | |
| 125 | $status = StatusValue::newGood(); |
| 126 | $result = []; |
| 127 | foreach ( $titles as $title ) { |
| 128 | /** @var Title $title */ |
| 129 | $result[$title->getPrefixedDBkey()] = $this->getEmptyDateRange( $days ); |
| 130 | $requestStatus = $this->makeRequest( |
| 131 | $this->getRequestUrl( self::SCOPE_ARTICLE, $title, $days ) ); |
| 132 | if ( $requestStatus->isOK() ) { |
| 133 | $data = $requestStatus->getValue(); |
| 134 | if ( isset( $data['items'] ) && is_array( $data['items'] ) ) { |
| 135 | foreach ( $data['items'] as $item ) { |
| 136 | $ts = $item['timestamp']; |
| 137 | $day = substr( $ts, 0, 4 ) . '-' . substr( $ts, 4, 2 ) . '-' . substr( $ts, 6, 2 ); |
| 138 | $result[$title->getPrefixedDBkey()][$day] = $item['views']; |
| 139 | } |
| 140 | $status->success[$title->getPrefixedDBkey()] = true; |
| 141 | } else { |
| 142 | $status->error( 'pvi-invalidresponse' ); |
| 143 | $status->success[$title->getPrefixedDBkey()] = false; |
| 144 | } |
| 145 | } else { |
| 146 | $status->success[$title->getPrefixedDBkey()] = false; |
| 147 | } |
| 148 | $status->merge( $requestStatus ); |
| 149 | } |
| 150 | $status->successCount = count( array_filter( $status->success ) ); |
| 151 | $status->failCount = count( $status->success ) - $status->successCount; |
| 152 | $status->setResult( (bool)$status->successCount, $result ); |
| 153 | return $status; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * @inheritDoc |
| 158 | */ |
| 159 | public function getSiteData( $days, $metric = self::METRIC_VIEW ) { |
| 160 | if ( $metric !== self::METRIC_VIEW && $metric !== self::METRIC_UNIQUE ) { |
| 161 | throw new InvalidArgumentException( 'Invalid metric: ' . $metric ); |
| 162 | } elseif ( $metric === self::METRIC_UNIQUE && $this->access === 'mobile-app' ) { |
| 163 | throw new InvalidArgumentException( |
| 164 | 'Unique device counts for mobile apps are not supported' ); |
| 165 | } |
| 166 | if ( $days <= 0 ) { |
| 167 | throw new InvalidArgumentException( 'Invalid days: ' . $days ); |
| 168 | } |
| 169 | $result = $this->getEmptyDateRange( $days ); |
| 170 | $status = $this->makeRequest( $this->getRequestUrl( $metric, null, $days ) ); |
| 171 | if ( $status->isOK() ) { |
| 172 | $data = $status->getValue(); |
| 173 | if ( isset( $data['items'] ) && is_array( $data['items'] ) ) { |
| 174 | foreach ( $data['items'] as $item ) { |
| 175 | $ts = $item['timestamp']; |
| 176 | $day = substr( $ts, 0, 4 ) . '-' . substr( $ts, 4, 2 ) . '-' . substr( $ts, 6, 2 ); |
| 177 | $count = $metric === self::METRIC_VIEW ? $item['views'] : $item['devices']; |
| 178 | $result[$day] = $count; |
| 179 | } |
| 180 | } else { |
| 181 | $status->fatal( 'pvi-invalidresponse' ); |
| 182 | } |
| 183 | } |
| 184 | $status->setResult( $status->isOK(), $result ); |
| 185 | return $status; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * @inheritDoc |
| 190 | */ |
| 191 | public function getTopPages( $metric = self::METRIC_VIEW ) { |
| 192 | $result = []; |
| 193 | if ( $metric !== self::METRIC_VIEW ) { |
| 194 | throw new InvalidArgumentException( 'Invalid metric: ' . $metric ); |
| 195 | } |
| 196 | $status = $this->makeRequest( $this->getRequestUrl( self::SCOPE_TOP ) ); |
| 197 | if ( $status->isOK() ) { |
| 198 | $data = $status->getValue(); |
| 199 | if ( isset( $data['items'] ) && is_array( $data['items'] ) && !$data['items'] ) { |
| 200 | // empty result set, no error; makeRequest generates this on 404 |
| 201 | } elseif ( |
| 202 | isset( $data['items'][0]['articles'] ) && |
| 203 | is_array( $data['items'][0]['articles'] ) |
| 204 | ) { |
| 205 | foreach ( $data['items'][0]['articles'] as $item ) { |
| 206 | $result[$item['article']] = $item['views']; |
| 207 | } |
| 208 | } else { |
| 209 | $status->fatal( 'pvi-invalidresponse' ); |
| 210 | } |
| 211 | } |
| 212 | $status->setResult( $status->isOK(), $result ); |
| 213 | return $status; |
| 214 | } |
| 215 | |
| 216 | public function getCacheExpiry( $metric, $scope ) { |
| 217 | // data is valid until the end of the day |
| 218 | $endOfDay = strtotime( '0:0 next day', MWTimestamp::time() ); |
| 219 | return $endOfDay - time(); |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * @param array $apiOptions |
| 224 | * @throws InvalidArgumentException |
| 225 | */ |
| 226 | protected function verifyApiOptions( array $apiOptions ) { |
| 227 | if ( !isset( $apiOptions['project'] ) ) { |
| 228 | throw new InvalidArgumentException( "'project' is required" ); |
| 229 | } elseif ( !in_array( $apiOptions['access'], |
| 230 | [ 'all-access', 'desktop', 'mobile-app', 'mobile-web' ], true ) ) { |
| 231 | throw new InvalidArgumentException( 'Invalid access: ' . $apiOptions['access'] ); |
| 232 | } elseif ( !in_array( $apiOptions['agent'], |
| 233 | [ 'all-agents', 'user', 'spider', 'bot' ], true ) ) { |
| 234 | throw new InvalidArgumentException( 'Invalid agent: ' . $apiOptions['agent'] ); |
| 235 | } elseif ( isset( $apiOptions['granularity'] ) ) { |
| 236 | throw new InvalidArgumentException( 'Changing granularity is not supported' ); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * @param string $scope SCOPE_* constant or METRIC_UNIQUE |
| 242 | * @param Title|null $title |
| 243 | * @param int|null $days |
| 244 | * @return string |
| 245 | */ |
| 246 | protected function getRequestUrl( $scope, Title $title = null, $days = null ) { |
| 247 | list( $start, $end ) = $this->getStartEnd( $days ); |
| 248 | switch ( $scope ) { |
| 249 | case self::SCOPE_ARTICLE: |
| 250 | if ( !$title ) { |
| 251 | throw new InvalidArgumentException( 'Title is required when using article scope' ); |
| 252 | } |
| 253 | // Use plain urlencode instead of wfUrlencode because we need |
| 254 | // "/" to be encoded, which wfUrlencode doesn't. |
| 255 | $encodedTitle = urlencode( $title->getPrefixedDBkey() ); |
| 256 | // YYYYMMDD |
| 257 | $start = substr( $start, 0, 8 ); |
| 258 | $end = substr( $end, 0, 8 ); |
| 259 | return "$this->endpoint/metrics/pageviews/per-article/$this->project/$this->access/" |
| 260 | . "$this->agent/$encodedTitle/$this->granularity/$start/$end"; |
| 261 | case self::METRIC_VIEW: |
| 262 | case self::SCOPE_SITE: |
| 263 | // YYYYMMDDHH |
| 264 | $start = substr( $start, 0, 10 ); |
| 265 | $end = substr( $end, 0, 10 ); |
| 266 | return "$this->endpoint/metrics/pageviews/aggregate/$this->project/$this->access/$this->agent/" |
| 267 | . "$this->granularity/$start/$end"; |
| 268 | case self::SCOPE_TOP: |
| 269 | $year = substr( $end, 0, 4 ); |
| 270 | $month = substr( $end, 4, 2 ); |
| 271 | $day = substr( $end, 6, 2 ); |
| 272 | return "$this->endpoint/metrics/pageviews/top/$this->project/$this->access/$year/$month/$day"; |
| 273 | case self::METRIC_UNIQUE: |
| 274 | $access = [ |
| 275 | 'all-access' => 'all-sites', |
| 276 | 'desktop' => 'desktop-site', |
| 277 | 'mobile-web' => 'mobile-site', |
| 278 | ][$this->access]; |
| 279 | // YYYYMMDD |
| 280 | $start = substr( $start, 0, 8 ); |
| 281 | $end = substr( $end, 0, 8 ); |
| 282 | return "$this->endpoint/metrics/unique-devices/$this->project/$access/" |
| 283 | . "$this->granularity/$start/$end"; |
| 284 | default: |
| 285 | throw new InvalidArgumentException( 'Invalid scope: ' . $scope ); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * @param string $url |
| 291 | * @return StatusValue |
| 292 | */ |
| 293 | protected function makeRequest( $url ) { |
| 294 | /** @var MWHttpRequest $request */ |
| 295 | $request = $this->httpRequestFactory->create( $url, [ 'timeout' => 10 ], __METHOD__ ); |
| 296 | if ( $this->originalRequest ) { |
| 297 | $request->setOriginalRequest( $this->originalRequest ); |
| 298 | } |
| 299 | $status = $request->execute(); |
| 300 | $parseStatus = FormatJson::parse( $request->getContent() ?? '', FormatJson::FORCE_ASSOC ); |
| 301 | if ( $status->isOK() ) { |
| 302 | $status->merge( $parseStatus, true ); |
| 303 | } |
| 304 | |
| 305 | $apiErrorData = []; |
| 306 | if ( !$status->isOK() && $parseStatus->isOK() && is_array( $parseStatus->getValue() ) ) { |
| 307 | // hash of: type, title, method, uri, [detail] |
| 308 | $apiErrorData = $parseStatus->getValue(); |
| 309 | if ( isset( $apiErrorData['detail'] ) && is_array( $apiErrorData['detail'] ) ) { |
| 310 | $apiErrorData['detail'] = implode( ', ', $apiErrorData['detail'] ); |
| 311 | } |
| 312 | } |
| 313 | if ( |
| 314 | $request->getStatus() === 404 && |
| 315 | isset( $apiErrorData['type'] ) && |
| 316 | $apiErrorData['type'] === 'https://mediawiki.org/wiki/HyperSwitch/errors/not_found' |
| 317 | ) { |
| 318 | // the pageview API will return with a 404 when the page has 0 views :/ |
| 319 | $status = StatusValue::newGood( [ 'items' => [] ] ); |
| 320 | } |
| 321 | if ( !$status->isGood() ) { |
| 322 | $error = Status::wrap( $status )->getWikiText( false, false, 'en' ); |
| 323 | $severity = $status->isOK() ? LogLevel::INFO : LogLevel::ERROR; |
| 324 | $msg = $status->isOK() |
| 325 | ? 'Problems fetching {requesturl}: {error}' |
| 326 | : 'Failed fetching {requesturl}: {error}'; |
| 327 | $prefixedApiErrorData = array_combine( array_map( static function ( $k ) { |
| 328 | return 'apierror_' . $k; |
| 329 | }, array_keys( $apiErrorData ) ), $apiErrorData ); |
| 330 | $this->logger->log( $severity, $msg, [ |
| 331 | 'requesturl' => $url, |
| 332 | 'error' => $error, |
| 333 | ] + $prefixedApiErrorData ); |
| 334 | } |
| 335 | if ( !$status->isOK() && isset( $apiErrorData['detail'] ) ) { |
| 336 | $status->error( ( new RawMessage( '$1' ) )->params( $apiErrorData['detail'] ) ); |
| 337 | } |
| 338 | |
| 339 | return $status; |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * The pageview API omits dates if there is no data. Fill it with nulls to make client-side |
| 344 | * processing easier. |
| 345 | * @param int $days |
| 346 | * @return array YYYY-MM-DD => null |
| 347 | */ |
| 348 | protected function getEmptyDateRange( $days ) { |
| 349 | if ( !$this->range ) { |
| 350 | $this->range = []; |
| 351 | // we only care about the date part, so add some hours to avoid errors when there is a |
| 352 | // leap second or some other weirdness |
| 353 | $end = $this->lastCompleteDay + 12 * 3600; |
| 354 | $start = $end - ( $days - 1 ) * 24 * 3600; |
| 355 | for ( $ts = $start; $ts <= $end; $ts += 24 * 3600 ) { |
| 356 | $this->range[gmdate( 'Y-m-d', $ts )] = null; |
| 357 | } |
| 358 | } |
| 359 | return $this->range; |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * Get start and end timestamp in YYYYMMDDHH format |
| 364 | * @param int $days |
| 365 | * @return string[] |
| 366 | */ |
| 367 | protected function getStartEnd( $days ) { |
| 368 | $end = $this->lastCompleteDay + 12 * 3600; |
| 369 | $start = $end - ( $days - 1 ) * 24 * 3600; |
| 370 | return [ gmdate( 'Ymd', $start ) . '00', gmdate( 'Ymd', $end ) . '00' ]; |
| 371 | } |
| 372 | } |