1 files changed, 152 insertions, 0 deletions
diff --git a/includes/filebackend/filejournal/DBFileJournal.php b/includes/filebackend/filejournal/DBFileJournal.php
new file mode 100644
index 00000000..f6268c25
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+++ b/includes/filebackend/filejournal/DBFileJournal.php
@@ -0,0 +1,152 @@
+<?php
+/**
+ * Version of FileJournal that logs to a DB table.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup FileJournal
+ * @author Aaron Schulz
+ */
+
+/**
+ * Version of FileJournal that logs to a DB table
+ * @since 1.20
+ */
+class DBFileJournal extends FileJournal {
+	/** @var DatabaseBase */
+	protected $dbw;
+
+	protected $wiki = false; // string; wiki DB name
+
+	/**
+	 * Construct a new instance from configuration.
+	 * $config includes:
+	 *     'wiki' : wiki name to use for LoadBalancer
+	 *
+	 * @param $config Array
+	 */
+	protected function __construct( array $config ) {
+		parent::__construct( $config );
+
+		$this->wiki = $config['wiki'];
+	}
+
+	/**
+	 * @see FileJournal::logChangeBatch()
+	 * @return Status
+	 */
+	protected function doLogChangeBatch( array $entries, $batchId ) {
+		$status = Status::newGood();
+
+		try {
+			$dbw = $this->getMasterDB();
+		} catch ( DBError $e ) {
+			$status->fatal( 'filejournal-fail-dbconnect', $this->backend );
+			return $status;
+		}
+
+		$now = wfTimestamp( TS_UNIX );
+
+		$data = array();
+		foreach ( $entries as $entry ) {
+			$data[] = array(
+				'fj_batch_uuid' => $batchId,
+				'fj_backend'    => $this->backend,
+				'fj_op'         => $entry['op'],
+				'fj_path'       => $entry['path'],
+				'fj_new_sha1'   => $entry['newSha1'],
+				'fj_timestamp'  => $dbw->timestamp( $now )
+			);
+		}
+
+		try {
+			$dbw->insert( 'filejournal', $data, __METHOD__ );
+		} catch ( DBError $e ) {
+			$status->fatal( 'filejournal-fail-dbquery', $this->backend );
+			return $status;
+		}
+
+		return $status;
+	}
+
+	/**
+	 * @see FileJournal::doGetChangeEntries()
+	 * @return Array
+	 * @throws DBError
+	 */
+	protected function doGetChangeEntries( $start, $limit ) {
+		$dbw = $this->getMasterDB();
+
+		$res = $dbw->select( 'filejournal', '*',
+			array(
+				'fj_backend' => $this->backend,
+				'fj_id >= ' . $dbw->addQuotes( (int)$start ) ), // $start may be 0
+			__METHOD__,
+			array_merge( array( 'ORDER BY' => 'fj_id ASC' ),
+				$limit ? array( 'LIMIT' => $limit ) : array() )
+		);
+
+		$entries = array();
+		foreach ( $res as $row ) {
+			$item = array();
+			foreach ( (array)$row as $key => $value ) {
+				$item[substr( $key, 3 )] = $value; // "fj_op" => "op"
+			}
+			$entries[] = $item;
+		}
+
+		return $entries;
+	}
+
+	/**
+	 * @see FileJournal::purgeOldLogs()
+	 * @return Status
+	 * @throws DBError
+	 */
+	protected function doPurgeOldLogs() {
+		$status = Status::newGood();
+		if ( $this->ttlDays <= 0 ) {
+			return $status; // nothing to do
+		}
+
+		$dbw = $this->getMasterDB();
+		$dbCutoff = $dbw->timestamp( time() - 86400 * $this->ttlDays );
+
+		$dbw->delete( 'filejournal',
+			array( 'fj_timestamp < ' . $dbw->addQuotes( $dbCutoff ) ),
+			__METHOD__
+		);
+
+		return $status;
+	}
+
+	/**
+	 * Get a master connection to the logging DB
+	 *
+	 * @return DatabaseBase
+	 * @throws DBError
+	 */
+	protected function getMasterDB() {
+		if ( !$this->dbw ) {
+			// Get a separate connection in autocommit mode
+			$lb = wfGetLBFactory()->newMainLB();
+			$this->dbw = $lb->getConnection( DB_MASTER, array(), $this->wiki );
+			$this->dbw->clearFlag( DBO_TRX );
+		}
+		return $this->dbw;
+	}
+}