}
}
-/**
- * Class for handling updates to the site_stats table
- */
-class SiteStatsUpdate implements DeferrableUpdate {
- protected $views = 0;
- protected $edits = 0;
- protected $pages = 0;
- protected $articles = 0;
- protected $users = 0;
- protected $images = 0;
-
- // @todo deprecate this constructor
- function __construct( $views, $edits, $good, $pages = 0, $users = 0 ) {
- $this->views = $views;
- $this->edits = $edits;
- $this->articles = $good;
- $this->pages = $pages;
- $this->users = $users;
- }
-
- /**
- * @param $deltas Array
- * @return SiteStatsUpdate
- */
- public static function factory( array $deltas ) {
- $update = new self( 0, 0, 0 );
-
- $fields = array( 'views', 'edits', 'pages', 'articles', 'users', 'images' );
- foreach ( $fields as $field ) {
- if ( isset( $deltas[$field] ) && $deltas[$field] ) {
- $update->$field = $deltas[$field];
- }
- }
-
- return $update;
- }
-
- public function doUpdate() {
- global $wgSiteStatsAsyncFactor;
-
- $rate = $wgSiteStatsAsyncFactor; // convenience
- // If set to do so, only do actual DB updates 1 every $rate times.
- // The other times, just update "pending delta" values in memcached.
- if ( $rate && ( $rate < 0 || mt_rand( 0, $rate - 1 ) != 0 ) ) {
- $this->doUpdatePendingDeltas();
- } else {
- // Need a separate transaction because this a global lock
- wfGetDB( DB_MASTER )->onTransactionIdle( array( $this, 'tryDBUpdateInternal' ) );
- }
- }
-
- /**
- * Do not call this outside of SiteStatsUpdate
- *
- * @return void
- */
- public function tryDBUpdateInternal() {
- global $wgSiteStatsAsyncFactor;
-
- $dbw = wfGetDB( DB_MASTER );
- $lockKey = wfMemcKey( 'site_stats' ); // prepend wiki ID
- if ( $wgSiteStatsAsyncFactor ) {
- // Lock the table so we don't have double DB/memcached updates
- if ( !$dbw->lockIsFree( $lockKey, __METHOD__ )
- || !$dbw->lock( $lockKey, __METHOD__, 1 ) // 1 sec timeout
- ) {
- $this->doUpdatePendingDeltas();
- return;
- }
- $pd = $this->getPendingDeltas();
- // Piggy-back the async deltas onto those of this stats update....
- $this->views += ( $pd['ss_total_views']['+'] - $pd['ss_total_views']['-'] );
- $this->edits += ( $pd['ss_total_edits']['+'] - $pd['ss_total_edits']['-'] );
- $this->articles += ( $pd['ss_good_articles']['+'] - $pd['ss_good_articles']['-'] );
- $this->pages += ( $pd['ss_total_pages']['+'] - $pd['ss_total_pages']['-'] );
- $this->users += ( $pd['ss_users']['+'] - $pd['ss_users']['-'] );
- $this->images += ( $pd['ss_images']['+'] - $pd['ss_images']['-'] );
- }
-
- // Build up an SQL query of deltas and apply them...
- $updates = '';
- $this->appendUpdate( $updates, 'ss_total_views', $this->views );
- $this->appendUpdate( $updates, 'ss_total_edits', $this->edits );
- $this->appendUpdate( $updates, 'ss_good_articles', $this->articles );
- $this->appendUpdate( $updates, 'ss_total_pages', $this->pages );
- $this->appendUpdate( $updates, 'ss_users', $this->users );
- $this->appendUpdate( $updates, 'ss_images', $this->images );
- if ( $updates != '' ) {
- $dbw->update( 'site_stats', array( $updates ), array(), __METHOD__ );
- }
-
- if ( $wgSiteStatsAsyncFactor ) {
- // Decrement the async deltas now that we applied them
- $this->removePendingDeltas( $pd );
- // Commit the updates and unlock the table
- $dbw->unlock( $lockKey, __METHOD__ );
- }
- }
-
- /**
- * @param $dbw DatabaseBase
- * @return bool|mixed
- */
- public static function cacheUpdate( $dbw ) {
- global $wgActiveUserDays;
- $dbr = wfGetDB( DB_SLAVE, array( 'SpecialStatistics', 'vslow' ) );
- # Get non-bot users than did some recent action other than making accounts.
- # If account creation is included, the number gets inflated ~20+ fold on enwiki.
- $activeUsers = $dbr->selectField(
- 'recentchanges',
- 'COUNT( DISTINCT rc_user_text )',
- array(
- 'rc_user != 0',
- 'rc_bot' => 0,
- 'rc_log_type != ' . $dbr->addQuotes( 'newusers' ) . ' OR rc_log_type IS NULL',
- 'rc_timestamp >= ' . $dbr->addQuotes( $dbr->timestamp( wfTimestamp( TS_UNIX ) - $wgActiveUserDays * 24 * 3600 ) ),
- ),
- __METHOD__
- );
- $dbw->update(
- 'site_stats',
- array( 'ss_active_users' => intval( $activeUsers ) ),
- array( 'ss_row_id' => 1 ),
- __METHOD__
- );
- return $activeUsers;
- }
-
- protected function doUpdatePendingDeltas() {
- $this->adjustPending( 'ss_total_views', $this->views );
- $this->adjustPending( 'ss_total_edits', $this->edits );
- $this->adjustPending( 'ss_good_articles', $this->articles );
- $this->adjustPending( 'ss_total_pages', $this->pages );
- $this->adjustPending( 'ss_users', $this->users );
- $this->adjustPending( 'ss_images', $this->images );
- }
-
- /**
- * @param $sql string
- * @param $field string
- * @param $delta integer
- */
- protected function appendUpdate( &$sql, $field, $delta ) {
- if ( $delta ) {
- if ( $sql ) {
- $sql .= ',';
- }
- if ( $delta < 0 ) {
- $sql .= "$field=$field-" . abs( $delta );
- } else {
- $sql .= "$field=$field+" . abs( $delta );
- }
- }
- }
-
- /**
- * @param $type string
- * @param string $sign ('+' or '-')
- * @return string
- */
- private function getTypeCacheKey( $type, $sign ) {
- return wfMemcKey( 'sitestatsupdate', 'pendingdelta', $type, $sign );
- }
-
- /**
- * Adjust the pending deltas for a stat type.
- * Each stat type has two pending counters, one for increments and decrements
- * @param $type string
- * @param $delta integer Delta (positive or negative)
- * @return void
- */
- protected function adjustPending( $type, $delta ) {
- global $wgMemc;
-
- if ( $delta < 0 ) { // decrement
- $key = $this->getTypeCacheKey( $type, '-' );
- } else { // increment
- $key = $this->getTypeCacheKey( $type, '+' );
- }
-
- $magnitude = abs( $delta );
- if ( !$wgMemc->incr( $key, $magnitude ) ) { // not there?
- if ( !$wgMemc->add( $key, $magnitude ) ) { // race?
- $wgMemc->incr( $key, $magnitude );
- }
- }
- }
-
- /**
- * Get pending delta counters for each stat type
- * @return Array Positive and negative deltas for each type
- * @return void
- */
- protected function getPendingDeltas() {
- global $wgMemc;
-
- $pending = array();
- foreach ( array( 'ss_total_views', 'ss_total_edits',
- 'ss_good_articles', 'ss_total_pages', 'ss_users', 'ss_images' ) as $type )
- {
- // Get pending increments and pending decrements
- $pending[$type]['+'] = (int)$wgMemc->get( $this->getTypeCacheKey( $type, '+' ) );
- $pending[$type]['-'] = (int)$wgMemc->get( $this->getTypeCacheKey( $type, '-' ) );
- }
-
- return $pending;
- }
-
- /**
- * Reduce pending delta counters after updates have been applied
- * @param array $pd Result of getPendingDeltas(), used for DB update
- * @return void
- */
- protected function removePendingDeltas( array $pd ) {
- global $wgMemc;
-
- foreach ( $pd as $type => $deltas ) {
- foreach ( $deltas as $sign => $magnitude ) {
- // Lower the pending counter now that we applied these changes
- $wgMemc->decr( $this->getTypeCacheKey( $type, $sign ), $magnitude );
- }
- }
- }
-}
-
/**
* Class designed for counting of stats.
*/
dépôts / lhc / web / wiklou.git / blobdiff