Refactored Logging environment (cleaned up)

src/Factory/LoggerFactory.php

@@ -5,8 +5,9 @@ namespace Friendica\Factory;
 use Friendica\Core\Config\Configuration;
 use Friendica\Core\Logger;
 use Friendica\Network\HTTPException\InternalServerErrorException;
-use Friendica\Util\Logger\FriendicaDevelopHandler;
-use Friendica\Util\Logger\Introspection;
+use Friendica\Util\Introspection;
+use Friendica\Util\Logger\Monolog\FriendicaDevelopHandler;
+use Friendica\Util\Logger\Monolog\FriendicaIntrospectionProcessor;
 use Friendica\Util\Logger\SyslogLogger;
 use Friendica\Util\Logger\VoidLogger;
 use Friendica\Util\Logger\WorkerLogger;
@@ -39,6 +40,8 @@ class LoggerFactory
 	 * @param Configuration $config  The config
 	 *
 	 * @return LoggerInterface The PSR-3 compliant logger instance
+	 *
+	 * @throws \Exception
 	 * @throws InternalServerErrorException
 	 */
 	public static function create($channel, Configuration $config)
@@ -49,12 +52,13 @@ class LoggerFactory
 			return $logger;
 		}
 
-		$introspector = new Introspection(LogLevel::DEBUG, self::$ignoreClassList);
+		$introspection = new Introspection(self::$ignoreClassList);
+
 		switch ($config->get('system', 'logger_adapter', 'monolog')) {
 			case 'syslog':
 				$level = $config->get('system', 'loglevel');
 
-				$logger = new SyslogLogger($channel, $introspector, $level);
+				$logger = new SyslogLogger($channel, $introspection, $level);
 				break;
 			case 'monolog':
 			default:
@@ -65,7 +69,7 @@ class LoggerFactory
 				$logger->pushProcessor(new Monolog\Processor\PsrLogMessageProcessor());
 				$logger->pushProcessor(new Monolog\Processor\ProcessIdProcessor());
 				$logger->pushProcessor(new Monolog\Processor\UidProcessor());
-				$logger->pushProcessor($introspector);
+				$logger->pushProcessor(new FriendicaIntrospectionProcessor($introspection, LogLevel::DEBUG));
 
 				$stream = $config->get('system', 'logfile');
 				$level  = $config->get('system', 'loglevel');
@@ -107,11 +111,13 @@ class LoggerFactory
 		$loggerTimeZone = new \DateTimeZone('UTC');
 		Monolog\Logger::setTimezone($loggerTimeZone);
 
+		$introspection = new Introspection(self::$ignoreClassList);
+
 		$logger = new Monolog\Logger($channel);
 		$logger->pushProcessor(new Monolog\Processor\PsrLogMessageProcessor());
 		$logger->pushProcessor(new Monolog\Processor\ProcessIdProcessor());
 		$logger->pushProcessor(new Monolog\Processor\UidProcessor());
-		$logger->pushProcessor(new Introspection(LogLevel::DEBUG, self::$ignoreClassList));
+		$logger->pushProcessor(new FriendicaIntrospectionProcessor($introspection, LogLevel::DEBUG));
 
 		$logger->pushHandler(new FriendicaDevelopHandler($developerIp));
 

src/Util/Introspection.php

@@ -1,20 +1,12 @@
 <?php
 
-namespace Friendica\Util\Logger;
-
-use Monolog\Logger;
-use Monolog\Processor\ProcessorInterface;
+namespace Friendica\Util;
 
 /**
- * Injects line/file//function where the log message came from
- *
- * Based on the class IntrospectionProcessor without the "class" information
- * @see IntrospectionProcessor
+ * Get Introspection information about the current call
  */
-class Introspection implements ProcessorInterface
+class Introspection
 {
-	private $level;
-
 	private $skipStackFramesCount;
 
 	private $skipClassesPartials;
@@ -25,30 +17,22 @@ class Introspection implements ProcessorInterface
 	];
 
 	/**
-	 * @param string|int $level The minimum logging level at which this Processor will be triggered
-	 * @param array $skipClassesPartials An array of classes to skip during logging
-	 * @param int $skipStackFramesCount If the logger should use information from other hierarchy levels of the call
+	 * @param array $skipClassesPartials  An array of classes to skip during logging
+	 * @param int   $skipStackFramesCount If the logger should use information from other hierarchy levels of the call
 	 */
-	public function __construct($level = Logger::DEBUG, $skipClassesPartials = array(), $skipStackFramesCount = 0)
+	public function __construct($skipClassesPartials = array(), $skipStackFramesCount = 0)
 	{
-		$this->level = Logger::toMonologLevel($level);
-		$this->skipClassesPartials = array_merge(array('Monolog\\'), $skipClassesPartials);
+		$this->skipClassesPartials  = $skipClassesPartials;
 		$this->skipStackFramesCount = $skipStackFramesCount;
 	}
 
-	public function __invoke(array $record)
+	/**
+	 * Adds new classes to get skipped
+	 * @param array $classNames
+	 */
+	public function addClasses(array $classNames)
 	{
-		// return if the level is not high enough
-		if ($record['level'] < $this->level) {
-			return $record;
-		}
-		// we should have the call source now
-		$record['extra'] = array_merge(
-			$record['extra'],
-			$this->getRecord()
-		);
-
-		return $record;
+		$this->skipClassesPartials = array_merge($this->skipClassesPartials, $classNames);
 	}
 
 	/**
@@ -79,7 +63,7 @@ class Introspection implements ProcessorInterface
 	 * Checks if the current trace class or function has to be skipped
 	 *
 	 * @param array $trace The current trace array
-	 * @param int   $index The index of the current hierarchy level
+	 * @param int $index The index of the current hierarchy level
 	 * @return bool True if the class or function should get skipped, otherwise false
 	 */
 	private function isTraceClassOrSkippedFunction(array $trace, $index)

src/Util/Logger/Monolog/FriendicaDevelopHandler.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Friendica\Util\Logger;
+namespace Friendica\Util\Logger\Monolog;
 
 use Monolog\Handler;
 use Monolog\Logger;

src/Util/Logger/Monolog/FriendicaIntrospectionProcessor.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Friendica\Util\Logger\Monolog;
+
+use Friendica\Util\Introspection;
+use Monolog\Logger;
+use Monolog\Processor\ProcessorInterface;
+
+/**
+ * Injects line/file//function where the log message came from
+ */
+class FriendicaIntrospectionProcessor implements ProcessorInterface
+{
+	private $level;
+
+	private $introspection;
+
+	/**
+	 * @param Introspection $introspection Holds the Introspection of the current call
+	 * @param string|int    $level         The minimum logging level at which this Processor will be triggered
+	 */
+	public function __construct(Introspection $introspection, $level = Logger::DEBUG)
+	{
+		$this->level = Logger::toMonologLevel($level);
+		$introspection->addClasses(array('Monolog\\'));
+		$this->introspection = $introspection;
+	}
+
+	public function __invoke(array $record)
+	{
+		// return if the level is not high enough
+		if ($record['level'] < $this->level) {
+			return $record;
+		}
+		// we should have the call source now
+		$record['extra'] = array_merge(
+			$record['extra'],
+			$this->introspection->getRecord()
+		);
+
+		return $record;
+	}
+}

src/Util/Logger/StreamLogger.php

@@ -0,0 +1,301 @@
+<?php
+
+namespace Friendica\Util\Logger;
+
+use Friendica\Network\HTTPException\InternalServerErrorException;
+use Friendica\Util\Introspection;
+use Friendica\Util\Strings;
+use Psr\Log\InvalidArgumentException;
+use Psr\Log\LoggerInterface;
+use Psr\Log\LogLevel;
+
+/**
+ * A Logger instance for logging into a stream
+ * @see http://php.net/manual/en/function.syslog.php
+ */
+class StreamLogger implements LoggerInterface
+{
+	const IDENT = 'Friendica';
+
+	/**
+	 * Translates LogLevel log levels to syslog log priorities.
+	 * @var array
+	 */
+	private $logLevels = [
+		LogLevel::DEBUG     => LOG_DEBUG,
+		LogLevel::INFO      => LOG_INFO,
+		LogLevel::NOTICE    => LOG_NOTICE,
+		LogLevel::WARNING   => LOG_WARNING,
+		LogLevel::ERROR     => LOG_ERR,
+		LogLevel::CRITICAL  => LOG_CRIT,
+		LogLevel::ALERT     => LOG_ALERT,
+		LogLevel::EMERGENCY => LOG_EMERG,
+	];
+
+	/**
+	 * Translates log priorities to string outputs
+	 * @var array
+	 */
+	private $logToString = [
+		LOG_DEBUG   => 'DEBUG',
+		LOG_INFO    => 'INFO',
+		LOG_NOTICE  => 'NOTICE',
+		LOG_WARNING => 'WARNING',
+		LOG_ERR     => 'ERROR',
+		LOG_CRIT    => 'CRITICAL',
+		LOG_ALERT   => 'ALERT',
+		LOG_EMERG   => 'EMERGENCY'
+	];
+
+	/**
+	 * The channel of the current process (added to each message)
+	 * @var string
+	 */
+	private $channel;
+
+	/**
+	 * Indicates what logging options will be used when generating a log message
+	 * @see http://php.net/manual/en/function.openlog.php#refsect1-function.openlog-parameters
+	 *
+	 * @var int
+	 */
+	private $logOpts;
+
+	/**
+	 * Used to specify what type of program is logging the message
+	 * @see http://php.net/manual/en/function.openlog.php#refsect1-function.openlog-parameters
+	 *
+	 * @var int
+	 */
+	private $logFacility;
+
+	/**
+	 * The minimum loglevel at which this logger will be triggered
+	 * @var int
+	 */
+	private $logLevel;
+
+	/**
+	 * The Introspection for the current call
+	 * @var Introspection
+	 */
+	private $introspection;
+
+	/**
+	 * The UID of the current call
+	 * @var string
+	 */
+	private $logUid;
+
+	/**
+	 * @param string        $channel       The output channel
+	 * @param Introspection $introspection The introspection of the current call
+	 * @param string        $level         The minimum loglevel at which this logger will be triggered
+	 * @param int           $logOpts       Indicates what logging options will be used when generating a log message
+	 * @param int           $logFacility   Used to specify what type of program is logging the message
+	 *
+	 * @throws \Exception
+	 */
+	public function __construct($channel, Introspection $introspection, $level = LogLevel::NOTICE, $logOpts = LOG_PID, $logFacility = LOG_USER)
+	{
+		$this->logUid = Strings::getRandomHex(6);
+		$this->channel = $channel;
+		$this->logOpts = $logOpts;
+		$this->logFacility = $logFacility;
+		$this->logLevel = $this->mapLevelToPriority($level);
+		$this->introspection = $introspection;
+	}
+
+	/**
+	 * Maps the LogLevel (@see LogLevel ) to a SysLog priority (@see http://php.net/manual/en/function.syslog.php#refsect1-function.syslog-parameters )
+	 *
+	 * @param string $level A LogLevel
+	 *
+	 * @return int The SysLog priority
+	 *
+	 * @throws \Psr\Log\InvalidArgumentException If the loglevel isn't valid
+	 */
+	public function mapLevelToPriority($level)
+	{
+		if (!array_key_exists($level, $this->logLevels)) {
+			throw new InvalidArgumentException('LogLevel \'' . $level . '\' isn\'t valid.');
+		}
+
+		return $this->logLevels[$level];
+	}
+
+	/**
+	 * Writes a message to the syslog
+	 * @see http://php.net/manual/en/function.syslog.php#refsect1-function.syslog-parameters
+	 *
+	 * @param int    $priority The Priority
+	 * @param string $message  The message of the log
+	 *
+	 * @throws InternalServerErrorException if syslog cannot be used
+	 */
+	private function write($priority, $message)
+	{
+		if (!openlog(self::IDENT, $this->logOpts, $this->logFacility)) {
+			throw new InternalServerErrorException('Can\'t open syslog for ident "' . $this->channel . '" and facility "' . $this->logFacility . '""');
+		}
+
+		syslog($priority, $message);
+	}
+
+	/**
+	 * Closes the Syslog
+	 */
+	public function close()
+	{
+		closelog();
+	}
+
+	/**
+	 * Formats a log record for the syslog output
+	 *
+	 * @param int    $level   The loglevel/priority
+	 * @param string $message The message
+	 * @param array  $context The context of this call
+	 *
+	 * @return string the formatted syslog output
+	 */
+	private function formatLog($level, $message, $context = [])
+	{
+		$record = $this->introspection->getRecord();
+		$record = array_merge($record, ['uid' => $this->logUid]);
+		$logMessage = '';
+
+		$logMessage .= $this->channel . ' ';
+		$logMessage .= '[' . $this->logToString[$level] . ']: ';
+		$logMessage .= $this->psrInterpolate($message, $context) . ' ';
+		$logMessage .= @json_encode($context) . ' - ';
+		$logMessage .= @json_encode($record);
+
+		return $logMessage;
+	}
+
+	/**
+	 * Simple interpolation of PSR-3 compliant replacements ( variables between '{' and '}' )
+	 * @see https://www.php-fig.org/psr/psr-3/#12-message
+	 *
+	 * @param string $message
+	 * @param array  $context
+	 *
+	 * @return string the interpolated message
+	 */
+	private function psrInterpolate($message, array $context = array())
+	{
+		$replace = [];
+		foreach ($context as $key => $value) {
+			// check that the value can be casted to string
+			if (!is_array($value) && (!is_object($value) || method_exists($value, '__toString'))) {
+				$replace['{' . $key . '}'] = $value;
+			} elseif (is_array($value)) {
+				$replace['{' . $key . '}'] = @json_encode($value);
+			}
+		}
+
+		return strtr($message, $replace);
+	}
+
+	/**
+	 * Adds a new entry to the syslog
+	 *
+	 * @param int    $level
+	 * @param string $message
+	 * @param array  $context
+	 *
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	private function addEntry($level, $message, $context = [])
+	{
+		if ($level >= $this->logLevel) {
+			return;
+		}
+
+		$formattedLog = $this->formatLog($level, $message, $context);
+		$this->write($level, $formattedLog);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function emergency($message, array $context = array())
+	{
+		$this->addEntry(LOG_EMERG, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function alert($message, array $context = array())
+	{
+		$this->addEntry(LOG_ALERT, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function critical($message, array $context = array())
+	{
+		$this->addEntry(LOG_CRIT, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function error($message, array $context = array())
+	{
+		$this->addEntry(LOG_ERR, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function warning($message, array $context = array())
+	{
+		$this->addEntry(LOG_WARNING, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function notice($message, array $context = array())
+	{
+		$this->addEntry(LOG_NOTICE, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function info($message, array $context = array())
+	{
+		$this->addEntry(LOG_INFO, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function debug($message, array $context = array())
+	{
+		$this->addEntry(LOG_DEBUG, $message, $context);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 * @throws InternalServerErrorException if the syslog isn't available
+	 */
+	public function log($level, $message, array $context = array())
+	{
+		$logLevel = $this->mapLevelToPriority($level);
+		$this->addEntry($logLevel, $message, $context);
+	}
+}

src/Util/Logger/SyslogLogger.php

@@ -3,6 +3,7 @@
 namespace Friendica\Util\Logger;
 
 use Friendica\Network\HTTPException\InternalServerErrorException;
+use Friendica\Util\Introspection;
 use Friendica\Util\Strings;
 use Psr\Log\InvalidArgumentException;
 use Psr\Log\LoggerInterface;
@@ -75,7 +76,7 @@ class SyslogLogger implements LoggerInterface
 	private $logLevel;
 
 	/**
-	 * The Introspector for the current call
+	 * The Introspection for the current call
 	 * @var Introspection
 	 */
 	private $introspection;
@@ -87,10 +88,13 @@ class SyslogLogger implements LoggerInterface
 	private $logUid;
 
 	/**
-	 * @param string $channel     The output channel
-	 * @param string $level       The minimum loglevel at which this logger will be triggered
-	 * @param int    $logOpts     Indicates what logging options will be used when generating a log message
-	 * @param int    $logFacility Used to specify what type of program is logging the message
+	 * @param string        $channel       The output channel
+	 * @param Introspection $introspection The introspection of the current call
+	 * @param string        $level         The minimum loglevel at which this logger will be triggered
+	 * @param int           $logOpts       Indicates what logging options will be used when generating a log message
+	 * @param int           $logFacility   Used to specify what type of program is logging the message
+	 *
+	 * @throws \Exception
 	 */
 	public function __construct($channel, Introspection $introspection, $level = LogLevel::NOTICE, $logOpts = LOG_PID, $logFacility = LOG_USER)
 	{