3 namespace Drupal\syslog\Logger;
5 use Drupal\Core\Config\ConfigFactoryInterface;
6 use Drupal\Core\Logger\LogMessageParserInterface;
7 use Drupal\Core\Logger\RfcLoggerTrait;
8 use Psr\Log\LoggerInterface;
11 * Redirects logging messages to syslog.
13 class SysLog implements LoggerInterface {
17 * A configuration object containing syslog settings.
19 * @var \Drupal\Core\Config\Config
24 * The message's placeholders parser.
26 * @var \Drupal\Core\Logger\LogMessageParserInterface
31 * Stores whether there is a system logger connection opened or not.
35 protected $connectionOpened = FALSE;
38 * Constructs a SysLog object.
40 * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
41 * The configuration factory object.
42 * @param \Drupal\Core\Logger\LogMessageParserInterface $parser
43 * The parser to use when extracting message variables.
45 public function __construct(ConfigFactoryInterface $config_factory, LogMessageParserInterface $parser) {
46 $this->config = $config_factory->get('syslog.settings');
47 $this->parser = $parser;
51 * Opens a connection to the system logger.
53 protected function openConnection() {
54 if (!$this->connectionOpened) {
55 $facility = $this->config->get('facility');
56 $this->connectionOpened = openlog($this->config->get('identity'), LOG_NDELAY, $facility);
63 public function log($level, $message, array $context = []) {
66 // Ensure we have a connection available.
67 $this->openConnection();
69 // Populate the message placeholders and then replace them in the message.
70 $message_placeholders = $this->parser->parseMessagePlaceholders($message, $context);
71 $message = empty($message_placeholders) ? $message : strtr($message, $message_placeholders);
73 $entry = strtr($this->config->get('format'), [
74 '!base_url' => $base_url,
75 '!timestamp' => $context['timestamp'],
76 '!type' => $context['channel'],
77 '!ip' => $context['ip'],
78 '!request_uri' => $context['request_uri'],
79 '!referer' => $context['referer'],
80 '!uid' => $context['uid'],
81 '!link' => strip_tags($context['link']),
82 '!message' => strip_tags($message),
85 syslog($level, $entry);