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1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | */ |
20 | |
21 | namespace MediaWiki\Logger\Monolog; |
22 | |
23 | use DateTimeInterface; |
24 | use Monolog\Handler\SyslogUdpHandler; |
25 | use Monolog\Logger; |
26 | |
27 | /** |
28 | * Write logs to a syslog server, using RFC 3164 formatted UDP packets. |
29 | * |
30 | * This builds on Monolog's SyslogUdpHandler, which creates only a partial |
31 | * RFC 5424 header (PRI and VERSION), with rest intending to come |
32 | * from a specifically configured LineFormatter. |
33 | * |
34 | * This makes use of SyslogUdpHandler it impossible with a formatter like |
35 | * \Monolog\Formatter\LogstashFormatter. Additionally, the direct syslog |
36 | * input for Logstash requires and accepts only RFC 3164 formatted packets. |
37 | * |
38 | * This is a complete syslog handler and should work with any formatter. The |
39 | * formatted message will be prepended with a complete RFC 3164 message |
40 | * header and a partial message body. The resulting packet looks like: |
41 | * |
42 | * <PRI>DATETIME HOSTNAME PROGRAM: MESSAGE |
43 | * |
44 | * This format works as input to rsyslog and can also be processed by the |
45 | * default Logstash syslog input handler. |
46 | * |
47 | * @since 1.25 |
48 | * @ingroup Debug |
49 | * @copyright © 2015 Wikimedia Foundation and contributors |
50 | */ |
51 | class SyslogHandler extends SyslogUdpHandler { |
52 | |
53 | private string $appname; |
54 | private string $hostname; |
55 | |
56 | /** |
57 | * @param string $appname Application name to report to syslog |
58 | * @param string $host Syslog host |
59 | * @param int $port Syslog port |
60 | * @param int $facility Syslog message facility |
61 | * @param int $level The minimum logging level at which this handler |
62 | * will be triggered |
63 | * @param bool $bubble Whether the messages that are handled can bubble up |
64 | * the stack or not |
65 | */ |
66 | public function __construct( |
67 | $appname, |
68 | $host, |
69 | $port = 514, |
70 | $facility = LOG_USER, |
71 | $level = Logger::DEBUG, |
72 | $bubble = true |
73 | ) { |
74 | parent::__construct( $host, $port, $facility, $level, $bubble ); |
75 | $this->appname = $appname; |
76 | $this->hostname = php_uname( 'n' ); |
77 | } |
78 | |
79 | protected function makeCommonSyslogHeader( int $severity, DateTimeInterface $datetime ): string { |
80 | $pri = $severity + $this->facility; |
81 | |
82 | // Goofy date format courtesy of RFC 3164 :( |
83 | // RFC 3164 actually specifies that the day of month should be space |
84 | // padded rather than unpadded but this seems to work with rsyslog and |
85 | // Logstash. |
86 | $timestamp = date( 'M j H:i:s' ); |
87 | |
88 | return "<{$pri}>{$timestamp} {$this->hostname} {$this->appname}: "; |
89 | } |
90 | } |