* Class for handling updates to the site_stats table
*/
class SiteStatsUpdate implements DeferrableUpdate, MergeableUpdate {
- /** @var BagOStuff */
- protected $stash;
/** @var int */
protected $edits = 0;
/** @var int */
/** @var int */
protected $images = 0;
- private static $counters = [ 'edits', 'pages', 'articles', 'users', 'images' ];
+ /** @var string[] Map of (table column => counter type) */
+ private static $counters = [
+ 'ss_total_edits' => 'edits',
+ 'ss_total_pages' => 'pages',
+ 'ss_good_articles' => 'articles',
+ 'ss_users' => 'users',
+ 'ss_images' => 'images'
+ ];
// @todo deprecate this constructor
function __construct( $views, $edits, $good, $pages = 0, $users = 0 ) {
$this->articles = $good;
$this->pages = $pages;
$this->users = $users;
-
- $this->stash = MediaWikiServices::getInstance()->getMainObjectStash();
}
public function merge( MergeableUpdate $update ) {
}
/**
- * @param array $deltas
+ * @param int[] $deltas Map of (counter type => integer delta)
* @return SiteStatsUpdate
+ * @throws UnexpectedValueException
*/
public static function factory( array $deltas ) {
$update = new self( 0, 0, 0 );
}
foreach ( self::$counters as $field ) {
- if ( isset( $deltas[$field] ) && $deltas[$field] ) {
- $update->$field = $deltas[$field];
- }
+ $update->$field = $deltas[$field] ?? 0;
}
return $update;
}
public function doUpdate() {
- $this->doUpdateContextStats();
-
- $rate = MediaWikiServices::getInstance()->getMainConfig()->get( 'SiteStatsAsyncFactor' );
- // 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
- DeferredUpdates::addCallableUpdate( [ $this, 'tryDBUpdateInternal' ] );
- }
- }
-
- /**
- * Do not call this outside of SiteStatsUpdate
- */
- public function tryDBUpdateInternal() {
$services = MediaWikiServices::getInstance();
- $config = $services->getMainConfig();
-
- $dbw = $services->getDBLoadBalancer()->getConnectionRef( DB_MASTER );
- $lockKey = $dbw->getDomainID() . ':site_stats'; // prepend wiki ID
- $pd = [];
- if ( $config->get( 'SiteStatsAsyncFactor' ) ) {
- // Lock the table so we don't have double DB/memcached updates
- if ( !$dbw->lock( $lockKey, __METHOD__, 0 ) ) {
- $this->doUpdatePendingDeltas();
+ $stats = $services->getStatsdDataFactory();
- return;
+ $deltaByType = [];
+ foreach ( self::$counters as $type ) {
+ $delta = $this->$type;
+ if ( $delta !== 0 ) {
+ $stats->updateCount( "site.$type", $delta );
}
- $pd = $this->getPendingDeltas();
- // Piggy-back the async deltas onto those of this stats update....
- $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_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', [ $updates ], [], __METHOD__ );
+ $deltaByType[$type] = $delta;
}
- if ( $config->get( 'SiteStatsAsyncFactor' ) ) {
- // Decrement the async deltas now that we applied them
- $this->removePendingDeltas( $pd );
- // Commit the updates and unlock the table
- $dbw->unlock( $lockKey, __METHOD__ );
- }
+ ( new AutoCommitUpdate(
+ $services->getDBLoadBalancer()->getConnectionRef( DB_MASTER ),
+ __METHOD__,
+ function ( IDatabase $dbw, $fname ) use ( $deltaByType ) {
+ $set = [];
+ foreach ( self::$counters as $column => $type ) {
+ $delta = (int)$deltaByType[$type];
+ if ( $delta > 0 ) {
+ $set[] = "$column=$column+" . abs( $delta );
+ } elseif ( $delta < 0 ) {
+ $set[] = "$column=$column-" . abs( $delta );
+ }
+ }
+
+ if ( $set ) {
+ $dbw->update( 'site_stats', $set, [ 'ss_row_id' => 1 ], $fname );
+ }
+ }
+ ) )->doUpdate();
- // Invalid cache used by parser functions
+ // Invalidate cache used by parser functions
SiteStats::unload();
}
return $activeUsers;
}
-
- protected function doUpdateContextStats() {
- $stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
- foreach ( [ 'edits', 'articles', 'pages', 'users', 'images' ] as $type ) {
- $delta = $this->$type;
- if ( $delta !== 0 ) {
- $stats->updateCount( "site.$type", $delta );
- }
- }
- }
-
- protected function doUpdatePendingDeltas() {
- $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', $this->images );
- }
-
- /**
- * @param string &$sql
- * @param string $field
- * @param int $delta
- */
- protected function appendUpdate( &$sql, $field, $delta ) {
- if ( $delta ) {
- if ( $sql ) {
- $sql .= ',';
- }
- if ( $delta < 0 ) {
- $sql .= "$field=$field-" . abs( $delta );
- } else {
- $sql .= "$field=$field+" . abs( $delta );
- }
- }
- }
-
- /**
- * @param BagOStuff $stash
- * @param string $type
- * @param string $sign ('+' or '-')
- * @return string
- */
- private function getTypeCacheKey( BagOStuff $stash, $type, $sign ) {
- return $stash->makeKey( '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 string $type
- * @param int $delta Delta (positive or negative)
- */
- protected function adjustPending( $type, $delta ) {
- if ( $delta < 0 ) { // decrement
- $key = $this->getTypeCacheKey( $this->stash, $type, '-' );
- } else { // increment
- $key = $this->getTypeCacheKey( $this->stash, $type, '+' );
- }
-
- $magnitude = abs( $delta );
- $this->stash->incrWithInit( $key, 0, $magnitude, $magnitude );
- }
-
- /**
- * Get pending delta counters for each stat type
- * @return array Positive and negative deltas for each type
- */
- protected function getPendingDeltas() {
- $pending = [];
- foreach ( [ 'ss_total_edits',
- 'ss_good_articles', 'ss_total_pages', 'ss_users', 'ss_images' ] as $type
- ) {
- // Get pending increments and pending decrements
- $flg = BagOStuff::READ_LATEST;
- $pending[$type]['+'] = (int)$this->stash->get(
- $this->getTypeCacheKey( $this->stash, $type, '+' ),
- $flg
- );
- $pending[$type]['-'] = (int)$this->stash->get(
- $this->getTypeCacheKey( $this->stash, $type, '-' ),
- $flg
- );
- }
-
- return $pending;
- }
-
- /**
- * Reduce pending delta counters after updates have been applied
- * @param array $pd Result of getPendingDeltas(), used for DB update
- */
- protected function removePendingDeltas( array $pd ) {
- foreach ( $pd as $type => $deltas ) {
- foreach ( $deltas as $sign => $magnitude ) {
- // Lower the pending counter now that we applied these changes
- $key = $this->getTypeCacheKey( $this->stash, $type, $sign );
- $this->stash->decr( $key, $magnitude );
- }
- }
- }
}
dépôts / lhc / web / wiklou.git / commitdiff