'MediaWiki\\Logger\\Monolog\\LegacyHandler' => __DIR__ . '/includes/debug/logger/monolog/LegacyHandler.php',
'MediaWiki\\Logger\\Monolog\\LineFormatter' => __DIR__ . '/includes/debug/logger/monolog/LineFormatter.php',
'MediaWiki\\Logger\\Monolog\\LogstashFormatter' => __DIR__ . '/includes/debug/logger/monolog/LogstashFormatter.php',
+ 'MediaWiki\\Logger\\Monolog\\MwlogHandler' => __DIR__ . '/includes/debug/logger/monolog/MwlogHandler.php',
'MediaWiki\\Logger\\Monolog\\SyslogHandler' => __DIR__ . '/includes/debug/logger/monolog/SyslogHandler.php',
'MediaWiki\\Logger\\Monolog\\WikiProcessor' => __DIR__ . '/includes/debug/logger/monolog/WikiProcessor.php',
'MediaWiki\\Logger\\NullSpi' => __DIR__ . '/includes/debug/logger/NullSpi.php',
--- /dev/null
+<?php
+/**
+ * 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
+ */
+
+namespace MediaWiki\Logger\Monolog;
+
+use Monolog\Handler\SyslogUdpHandler;
+use Monolog\Logger;
+
+/**
+ * Log handler that will append the record's channel to a fixed 'application
+ * prefix' given at construction time.
+ *
+ * The use case for this handler is to deprecate udp2log with a localhost
+ * syslog endpoint. The application name is then used to reconstruct the
+ * message's channel.
+ *
+ * @since 1.32
+ * @copyright © 2019 Wikimedia Foundation and contributors
+ */
+class MwlogHandler extends SyslogUdpHandler {
+
+ /**
+ * @var string $appprefix
+ */
+ private $appprefix;
+
+ /**
+ * @var string $hostname
+ */
+ private $hostname;
+
+ /**
+ * @param string $appprefix Application prefix to use, channel will be appended.
+ * @param string $host Syslog host
+ * @param int $port Syslog port
+ * @param int $facility Syslog message facility
+ * @param int $level The minimum logging level at which this handler
+ * will be triggered
+ * @param bool $bubble Whether the messages that are handled can bubble up
+ * the stack or not
+ */
+ public function __construct(
+ $appprefix,
+ $host,
+ $port = 514,
+ $facility = LOG_USER,
+ $level = Logger::DEBUG,
+ $bubble = true
+ ) {
+ parent::__construct( $host, $port, $facility, $level, $bubble );
+ $this->appprefix = $appprefix;
+ $this->hostname = php_uname( 'n' );
+ }
+
+ protected function syslogHeader( $severity, $app ) {
+ $pri = $severity + $this->facility;
+
+ // Goofy date format courtesy of RFC 3164 :(
+ // RFC 3164 actually specifies that the day of month should be space
+ // padded rather than unpadded but this seems to work with rsyslog and
+ // Logstash.
+ $timestamp = date( 'M j H:i:s' );
+
+ return "<{$pri}>{$timestamp} {$this->hostname} {$app}: ";
+ }
+
+ private function splitMessageIntoLines( $message ): array {
+ if ( is_array( $message ) ) {
+ $message = implode( "\n", $message );
+ }
+
+ return preg_split( '/$\R?^/m', (string)$message, -1, PREG_SPLIT_NO_EMPTY );
+ }
+
+ protected function write( array $record ) {
+ $lines = $this->splitMessageIntoLines( $record['formatted'] );
+ $header = $this->syslogHeader(
+ $this->logLevels[$record['level']],
+ $this->appprefix . $record['channel'] );
+
+ foreach ( $lines as $line ) {
+ $this->socket->write( $line, $header );
+ }
+ }
+}