annotate core/lib/Drupal/Core/Logger/LoggerChannel.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents af1871eacc83
children
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Chris@0 1 <?php
Chris@0 2
Chris@0 3 namespace Drupal\Core\Logger;
Chris@0 4
Chris@0 5 use Drupal\Core\Session\AccountInterface;
Chris@0 6 use Psr\Log\LoggerInterface;
Chris@0 7 use Psr\Log\LoggerTrait;
Chris@0 8 use Psr\Log\LogLevel;
Chris@0 9 use Symfony\Component\HttpFoundation\RequestStack;
Chris@0 10
Chris@0 11 /**
Chris@0 12 * Defines a logger channel that most implementations will use.
Chris@0 13 */
Chris@0 14 class LoggerChannel implements LoggerChannelInterface {
Chris@0 15 use LoggerTrait;
Chris@0 16
Chris@0 17 /**
Chris@0 18 * Maximum call depth to self::log() for a single log message.
Chris@0 19 *
Chris@0 20 * It's very easy for logging channel code to call out to other library code
Chris@0 21 * that will create log messages. In that case, we will recurse back in to
Chris@0 22 * LoggerChannel::log() multiple times while processing a single originating
Chris@0 23 * message. To prevent infinite recursion, we track the call depth and bail
Chris@0 24 * out at LoggerChannel::MAX_CALL_DEPTH iterations.
Chris@0 25 *
Chris@0 26 * @var int
Chris@0 27 */
Chris@0 28 const MAX_CALL_DEPTH = 5;
Chris@0 29
Chris@0 30 /**
Chris@0 31 * Number of times LoggerChannel::log() has been called for a single message.
Chris@0 32 *
Chris@0 33 * @var int
Chris@0 34 */
Chris@0 35 protected $callDepth = 0;
Chris@0 36
Chris@0 37 /**
Chris@0 38 * The name of the channel of this logger instance.
Chris@0 39 *
Chris@0 40 * @var string
Chris@0 41 */
Chris@0 42 protected $channel;
Chris@0 43
Chris@0 44 /**
Chris@0 45 * Map of PSR3 log constants to RFC 5424 log constants.
Chris@0 46 *
Chris@0 47 * @var array
Chris@0 48 */
Chris@0 49 protected $levelTranslation = [
Chris@0 50 LogLevel::EMERGENCY => RfcLogLevel::EMERGENCY,
Chris@0 51 LogLevel::ALERT => RfcLogLevel::ALERT,
Chris@0 52 LogLevel::CRITICAL => RfcLogLevel::CRITICAL,
Chris@0 53 LogLevel::ERROR => RfcLogLevel::ERROR,
Chris@0 54 LogLevel::WARNING => RfcLogLevel::WARNING,
Chris@0 55 LogLevel::NOTICE => RfcLogLevel::NOTICE,
Chris@0 56 LogLevel::INFO => RfcLogLevel::INFO,
Chris@0 57 LogLevel::DEBUG => RfcLogLevel::DEBUG,
Chris@0 58 ];
Chris@0 59
Chris@0 60 /**
Chris@0 61 * An array of arrays of \Psr\Log\LoggerInterface keyed by priority.
Chris@0 62 *
Chris@0 63 * @var array
Chris@0 64 */
Chris@0 65 protected $loggers = [];
Chris@0 66
Chris@0 67 /**
Chris@0 68 * The request stack object.
Chris@0 69 *
Chris@0 70 * @var \Symfony\Component\HttpFoundation\RequestStack
Chris@0 71 */
Chris@0 72 protected $requestStack;
Chris@0 73
Chris@0 74 /**
Chris@0 75 * The current user object.
Chris@0 76 *
Chris@0 77 * @var \Drupal\Core\Session\AccountInterface
Chris@0 78 */
Chris@0 79 protected $currentUser;
Chris@0 80
Chris@0 81 /**
Chris@0 82 * Constructs a LoggerChannel object
Chris@0 83 *
Chris@0 84 * @param string $channel
Chris@0 85 * The channel name for this instance.
Chris@0 86 */
Chris@0 87 public function __construct($channel) {
Chris@0 88 $this->channel = $channel;
Chris@0 89 }
Chris@0 90
Chris@0 91 /**
Chris@0 92 * {@inheritdoc}
Chris@0 93 */
Chris@0 94 public function log($level, $message, array $context = []) {
Chris@0 95 if ($this->callDepth == self::MAX_CALL_DEPTH) {
Chris@0 96 return;
Chris@0 97 }
Chris@0 98 $this->callDepth++;
Chris@0 99
Chris@0 100 // Merge in defaults.
Chris@0 101 $context += [
Chris@0 102 'channel' => $this->channel,
Chris@0 103 'link' => '',
Chris@0 104 'uid' => 0,
Chris@0 105 'request_uri' => '',
Chris@0 106 'referer' => '',
Chris@0 107 'ip' => '',
Chris@0 108 'timestamp' => time(),
Chris@0 109 ];
Chris@0 110 // Some context values are only available when in a request context.
Chris@0 111 if ($this->requestStack && $request = $this->requestStack->getCurrentRequest()) {
Chris@0 112 $context['request_uri'] = $request->getUri();
Chris@0 113 $context['referer'] = $request->headers->get('Referer', '');
Chris@0 114 $context['ip'] = $request->getClientIP();
Chris@18 115
Chris@18 116 if ($this->currentUser) {
Chris@18 117 $context['uid'] = $this->currentUser->id();
Chris@0 118 }
Chris@0 119 }
Chris@0 120
Chris@0 121 if (is_string($level)) {
Chris@0 122 // Convert to integer equivalent for consistency with RFC 5424.
Chris@0 123 $level = $this->levelTranslation[$level];
Chris@0 124 }
Chris@0 125 // Call all available loggers.
Chris@0 126 foreach ($this->sortLoggers() as $logger) {
Chris@0 127 $logger->log($level, $message, $context);
Chris@0 128 }
Chris@0 129
Chris@0 130 $this->callDepth--;
Chris@0 131 }
Chris@0 132
Chris@0 133 /**
Chris@0 134 * {@inheritdoc}
Chris@0 135 */
Chris@0 136 public function setRequestStack(RequestStack $requestStack = NULL) {
Chris@0 137 $this->requestStack = $requestStack;
Chris@0 138 }
Chris@0 139
Chris@0 140 /**
Chris@0 141 * {@inheritdoc}
Chris@0 142 */
Chris@0 143 public function setCurrentUser(AccountInterface $current_user = NULL) {
Chris@0 144 $this->currentUser = $current_user;
Chris@0 145 }
Chris@0 146
Chris@0 147 /**
Chris@0 148 * {@inheritdoc}
Chris@0 149 */
Chris@0 150 public function setLoggers(array $loggers) {
Chris@0 151 $this->loggers = $loggers;
Chris@0 152 }
Chris@0 153
Chris@0 154 /**
Chris@0 155 * {@inheritdoc}
Chris@0 156 */
Chris@0 157 public function addLogger(LoggerInterface $logger, $priority = 0) {
Chris@0 158 $this->loggers[$priority][] = $logger;
Chris@0 159 }
Chris@0 160
Chris@0 161 /**
Chris@0 162 * Sorts loggers according to priority.
Chris@0 163 *
Chris@0 164 * @return array
Chris@0 165 * An array of sorted loggers by priority.
Chris@0 166 */
Chris@0 167 protected function sortLoggers() {
Chris@0 168 $sorted = [];
Chris@0 169 krsort($this->loggers);
Chris@0 170
Chris@0 171 foreach ($this->loggers as $loggers) {
Chris@0 172 $sorted = array_merge($sorted, $loggers);
Chris@0 173 }
Chris@0 174 return $sorted;
Chris@0 175 }
Chris@0 176
Chris@0 177 }