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<?php
/**
* Custom job to perform updates on tables in busier environments
*/
class RenameUserJob extends Job {
/**
* Constructor
*
* @param Title $title Associated title
* @param array $params Job parameters
* @param int $id
*/
public function __construct( $title, $params = array(), $id = 0 ) {
parent::__construct( 'renameUser', $title, $params, $id );
}
/**
* Execute the job
*
* @return bool
*/
public function run() {
$dbw = wfGetDB( DB_MASTER );
$table = $this->params['table'];
$column = $this->params['column'];
$oldname = $this->params['oldname'];
$userID = isset( $this->params['userID'] ) ? $this->params['userID'] : null;
$uidColumn = isset( $this->params['uidColumn'] ) ? $this->params['uidColumn'] : null;
$timestampColumn = isset( $this->params['timestampColumn'] ) ?
$this->params['timestampColumn'] :
null;
$minTimestamp = $this->params['minTimestamp'];
$maxTimestamp = $this->params['maxTimestamp'];
$uniqueKey = isset( $this->params['uniqueKey'] ) ? $this->params['uniqueKey'] : null;
$keyId = isset( $this->params['keyId'] ) ? $this->params['keyId'] : null;
$newname = $this->params['newname'];
$count = $this->params['count'];
# Conditions like "*_user_text = 'x'
$conds = array( $column => $oldname );
# If user ID given, add that to condition to avoid rename collisions.
if ( isset( $userID ) ) {
$conds[$uidColumn] = $userID;
}
# Bound by timestamp if given
if ( isset( $timestampColumn ) ) {
$conds[] = "$timestampColumn >= '$minTimestamp'";
$conds[] = "$timestampColumn <= '$maxTimestamp'";
# Otherwise, bound by key (B/C)
} elseif ( isset( $uniqueKey ) ) {
$conds[$uniqueKey] = $keyId;
} else {
wfDebug( 'RenameUserJob::run - invalid job row given' ); // this shouldn't happen
return false;
}
# Update a chuck of rows!
$dbw->update( $table,
array( $column => $newname ),
$conds,
__METHOD__
);
# Special case: revisions may be deleted while renaming...
if ( $table === 'revision' && isset( $timestampColumn ) ) {
$actual = $dbw->affectedRows();
# If some revisions were not renamed, they may have been deleted.
# Do a pass on the archive table to get these straglers...
if ( $actual < $count ) {
$dbw->update( 'archive',
array( 'ar_user_text' => $newname ),
array( 'ar_user_text' => $oldname,
'ar_user' => $userID,
// No user,rev_id index, so use timestamp to bound
// the rows. This can use the user,timestamp index.
"ar_timestamp >= '$minTimestamp'",
"ar_timestamp <= '$maxTimestamp'" ),
__METHOD__
);
}
}
# Special case: revisions may be restored while renaming...
if ( $table === 'archive' && isset( $timestampColumn ) ) {
$actual = $dbw->affectedRows();
# If some revisions were not renamed, they may have been restored.
# Do a pass on the revision table to get these straglers...
if ( $actual < $count ) {
$dbw->update( 'revision',
array( 'rev_user_text' => $newname ),
array( 'rev_user_text' => $oldname,
'rev_user' => $userID,
// No user,rev_id index, so use timestamp to bound
// the rows. This can use the user,timestamp index.
"rev_timestamp >= '$minTimestamp'",
"rev_timestamp <= '$maxTimestamp'" ),
__METHOD__
);
}
}
return true;
}
}
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