$out->wrapWikiMsg( "<div class='mw-activeusers-intro'>\n$1\n</div>",
array( 'activeusers-intro', $this->getLanguage()->formatNum( $days ) ) );
- // Occasionally merge in new updates
- $seconds = min( self::mergeActiveUsers( 300, $days ), $days * 86400 );
- if ( $seconds > 0 ) {
- // Mention the level of staleness
- $out->addWikiMsg( 'cachedspecial-viewing-cached-ttl',
- $this->getLanguage()->formatDuration( $seconds ) );
+ // Mention the level of cache staleness...
+ $dbr = wfGetDB( DB_SLAVE, 'recentchanges' );
+ $rcMax = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)' );
+ if ( $rcMax ) {
+ $cTime = $dbr->selectField( 'querycache_info',
+ 'qci_timestamp',
+ array( 'qci_type' => 'activeusers' )
+ );
+ if ( $cTime ) {
+ $secondsOld = wfTimestamp( TS_UNIX, $rcMax ) - wfTimestamp( TS_UNIX, $cTime );
+ } else {
+ $rcMin = $dbr->selectField( 'recentchanges', 'MIN(rc_timestamp)' );
+ $secondsOld = time() - wfTimestamp( TS_UNIX, $rcMin );
+ }
+ if ( $secondsOld > 0 ) {
+ $out->addWikiMsg( 'cachedspecial-viewing-cached-ttl',
+ $this->getLanguage()->formatDuration( $secondsOld ) );
+ }
}
$up = new ActiveUsersPager( $this->getContext(), null, $par );
protected function getGroupName() {
return 'users';
}
-
- /**
- * @param int $period Seconds (do updates no more often than this)
- * @param int $days How many days user must be idle before he is considered inactive
- * @return int How many seconds old the cache is
- */
- public static function mergeActiveUsers( $period, $days ) {
- $dbr = wfGetDB( DB_SLAVE );
- $cTime = $dbr->selectField( 'querycache_info',
- 'qci_timestamp',
- array( 'qci_type' => 'activeusers' )
- );
-
- if ( !wfReadOnly() ) {
- if ( !$cTime || ( time() - wfTimestamp( TS_UNIX, $cTime ) ) > $period ) {
- $dbw = wfGetDB( DB_MASTER );
- $cond = $cTime
- ? array( 'rc_timestamp > ' . $dbw->addQuotes( $cTime ) )
- : array();
- if ( $dbw->estimateRowCount( 'recentchanges', '*', $cond ) <= 10000 ) {
- $window = $days * 86400; // small wiki
- } else {
- $window = $period * 2;
- }
- $cTime = self::doQueryCacheUpdate( $dbw, $days, $window ) ?: $cTime;
- }
- }
-
- return ( time() -
- ( $cTime ? wfTimestamp( TS_UNIX, $cTime ) : $days * 86400 ) );
- }
-
- /**
- * @param IDatabase $dbw Passed in from updateSpecialPages.php
- * @return void
- */
- public static function cacheUpdate( IDatabase $dbw ) {
- global $wgActiveUserDays;
-
- self::doQueryCacheUpdate( $dbw, $wgActiveUserDays, $wgActiveUserDays * 86400 );
- }
-
- /**
- * Update the query cache as needed
- *
- * @param IDatabase $dbw
- * @param int $days How many days user must be idle before he is considered inactive
- * @param int $window Maximum time range of new data to scan (in seconds)
- * @return int|bool UNIX timestamp the cache is now up-to-date as of (false on error)
- */
- protected static function doQueryCacheUpdate( IDatabase $dbw, $days, $window ) {
- $dbw->startAtomic( __METHOD__ );
-
- $lockKey = wfWikiID() . '-activeusers';
- if ( !$dbw->lock( $lockKey, __METHOD__, 1 ) ) {
- return false; // exclusive update (avoids duplicate entries)
- }
-
- $nowUnix = time();
- // Get the last-updated timestamp for the cache
- $cTime = $dbw->selectField( 'querycache_info',
- 'qci_timestamp',
- array( 'qci_type' => 'activeusers' )
- );
- $cTimeUnix = $cTime ? wfTimestamp( TS_UNIX, $cTime ) : 1;
-
- // Pick the date range to fetch from. This is normally from the last
- // update to till the present time, but has a limited window for sanity.
- // If the window is limited, multiple runs are need to fully populate it.
- $sTimestamp = max( $cTimeUnix, $nowUnix - $days * 86400 );
- $eTimestamp = min( $sTimestamp + $window, $nowUnix );
-
- // Get all the users active since the last update
- $res = $dbw->select(
- array( 'recentchanges' ),
- array( 'rc_user_text', 'lastedittime' => 'MAX(rc_timestamp)' ),
- array(
- 'rc_user > 0', // actual accounts
- 'rc_type != ' . $dbw->addQuotes( RC_EXTERNAL ), // no wikidata
- 'rc_log_type IS NULL OR rc_log_type != ' . $dbw->addQuotes( 'newusers' ),
- 'rc_timestamp >= ' . $dbw->addQuotes( $dbw->timestamp( $sTimestamp ) ),
- 'rc_timestamp <= ' . $dbw->addQuotes( $dbw->timestamp( $eTimestamp ) )
- ),
- __METHOD__,
- array(
- 'GROUP BY' => array( 'rc_user_text' ),
- 'ORDER BY' => 'NULL' // avoid filesort
- )
- );
- $names = array();
- foreach ( $res as $row ) {
- $names[$row->rc_user_text] = $row->lastedittime;
- }
-
- // Rotate out users that have not edited in too long (according to old data set)
- $dbw->delete( 'querycachetwo',
- array(
- 'qcc_type' => 'activeusers',
- 'qcc_value < ' . $dbw->addQuotes( $nowUnix - $days * 86400 ) // TS_UNIX
- ),
- __METHOD__
- );
-
- // Find which of the recently active users are already accounted for
- if ( count( $names ) ) {
- $res = $dbw->select( 'querycachetwo',
- array( 'user_name' => 'qcc_title' ),
- array(
- 'qcc_type' => 'activeusers',
- 'qcc_namespace' => NS_USER,
- 'qcc_title' => array_keys( $names ) ),
- __METHOD__,
- // See the latest data (ignoring trx snapshot) to avoid
- // duplicates if this method was called in a transaction
- array( 'LOCK IN SHARE MODE' )
- );
- foreach ( $res as $row ) {
- unset( $names[$row->user_name] );
- }
- }
-
- // Insert the users that need to be added to the list (which their last edit time
- if ( count( $names ) ) {
- $newRows = array();
- foreach ( $names as $name => $lastEditTime ) {
- $newRows[] = array(
- 'qcc_type' => 'activeusers',
- 'qcc_namespace' => NS_USER,
- 'qcc_title' => $name,
- 'qcc_value' => wfTimestamp( TS_UNIX, $lastEditTime ),
- 'qcc_namespacetwo' => 0, // unused
- 'qcc_titletwo' => '' // unused
- );
- }
- foreach ( array_chunk( $newRows, 500 ) as $rowBatch ) {
- $dbw->insert( 'querycachetwo', $rowBatch, __METHOD__ );
- if ( !$dbw->trxLevel() ) {
- wfWaitForSlaves();
- }
- }
- }
-
- // If a transaction was already started, it might have an old
- // snapshot, so kludge the timestamp range back as needed.
- $asOfTimestamp = min( $eTimestamp, (int)$dbw->trxTimestamp() );
-
- // Touch the data freshness timestamp
- $dbw->replace( 'querycache_info',
- array( 'qci_type' ),
- array( 'qci_type' => 'activeusers',
- 'qci_timestamp' => $dbw->timestamp( $asOfTimestamp ) ), // not always $now
- __METHOD__
- );
-
- $dbw->unlock( $lockKey, __METHOD__ );
- $dbw->endAtomic( __METHOD__ );
-
- return $eTimestamp;
- }
}
dépôts / lhc / web / wiklou.git / blobdiff