diff options
Diffstat (limited to '')
-rw-r--r-- | library/Icinga/Application/Logger.php | 349 | ||||
-rw-r--r-- | library/Icinga/Application/Logger/LogWriter.php | 30 | ||||
-rw-r--r-- | library/Icinga/Application/Logger/Writer/FileWriter.php | 80 | ||||
-rw-r--r-- | library/Icinga/Application/Logger/Writer/PhpWriter.php | 39 | ||||
-rw-r--r-- | library/Icinga/Application/Logger/Writer/StderrWriter.php | 61 | ||||
-rw-r--r-- | library/Icinga/Application/Logger/Writer/StdoutWriter.php | 13 | ||||
-rw-r--r-- | library/Icinga/Application/Logger/Writer/SyslogWriter.php | 90 |
7 files changed, 662 insertions, 0 deletions
diff --git a/library/Icinga/Application/Logger.php b/library/Icinga/Application/Logger.php new file mode 100644 index 0000000..347af44 --- /dev/null +++ b/library/Icinga/Application/Logger.php @@ -0,0 +1,349 @@ +<?php +/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Application; + +use Exception; +use Icinga\Data\ConfigObject; +use Icinga\Application\Logger\Writer\FileWriter; +use Icinga\Application\Logger\Writer\SyslogWriter; +use Icinga\Exception\ConfigurationError; +use Icinga\Exception\IcingaException; +use Icinga\Util\Json; + +/** + * Logger + */ +class Logger +{ + /** + * Debug message + */ + const DEBUG = 1; + + /** + * Informational message + */ + const INFO = 2; + + /** + * Warning message + */ + const WARNING = 4; + + /** + * Error message + */ + const ERROR = 8; + + /** + * Log levels + * + * @var array + */ + public static $levels = array( + Logger::DEBUG => 'DEBUG', + Logger::INFO => 'INFO', + Logger::WARNING => 'WARNING', + Logger::ERROR => 'ERROR' + ); + + /** + * This logger's instance + * + * @var static + */ + protected static $instance; + + /** + * Log writer + * + * @var \Icinga\Application\Logger\LogWriter + */ + protected $writer; + + /** + * Maximum level to emit + * + * @var int + */ + protected $level; + + /** + * Error messages to be displayed prior to any other log message + * + * @var array + */ + protected $configErrors = array(); + + /** + * Create a new logger object + * + * @param ConfigObject $config + * + * @throws ConfigurationError If the logging configuration directive 'log' is missing or if the logging level is + * not defined + */ + public function __construct(ConfigObject $config) + { + if ($config->log === null) { + throw new ConfigurationError('Required logging configuration directive \'log\' missing'); + } + + $this->setLevel($config->get('level', static::ERROR)); + + if (strtolower($config->get('log', 'syslog')) !== 'none') { + $this->writer = $this->createWriter($config); + } + } + + /** + * Set the logging level to use + * + * @param mixed $level + * + * @return $this + * + * @throws ConfigurationError In case the given level is invalid + */ + public function setLevel($level) + { + if (is_numeric($level)) { + $level = (int) $level; + if (! isset(static::$levels[$level])) { + throw new ConfigurationError( + 'Can\'t set logging level %d. Logging level is invalid. Use one of %s or one of the' + . ' Logger\'s constants.', + $level, + implode(', ', array_keys(static::$levels)) + ); + } + + $this->level = $level; + } else { + $level = strtoupper($level); + $levels = array_flip(static::$levels); + if (! isset($levels[$level])) { + throw new ConfigurationError( + 'Can\'t set logging level "%s". Logging level is invalid. Use one of %s.', + $level, + implode(', ', array_keys($levels)) + ); + } + + $this->level = $levels[$level]; + } + + return $this; + } + + /** + * Return the logging level being used + * + * @return int + */ + public function getLevel() + { + return $this->level; + } + + /** + * Register the given message as config error + * + * Config errors are logged every time a log message is being logged. + * + * @param mixed $arg,... A string, exception or format-string + substitutions + * + * @return $this + */ + public function registerConfigError() + { + if (func_num_args() > 0) { + $this->configErrors[] = static::formatMessage(func_get_args()); + } + + return $this; + } + + /** + * Create a new logger object + * + * @param ConfigObject $config + * + * @return static + */ + public static function create(ConfigObject $config) + { + static::$instance = new static($config); + return static::$instance; + } + + /** + * Create a log writer + * + * @param ConfigObject $config The configuration to initialize the writer with + * + * @return \Icinga\Application\Logger\LogWriter The requested log writer + * @throws ConfigurationError If the requested writer cannot be found + */ + protected function createWriter(ConfigObject $config) + { + $class = 'Icinga\\Application\\Logger\\Writer\\' . ucfirst(strtolower($config->log)) . 'Writer'; + if (! class_exists($class)) { + throw new ConfigurationError( + 'Cannot find log writer of type "%s"', + $config->log + ); + } + return new $class($config); + } + + /** + * Log a message + * + * @param int $level The logging level + * @param string $message The log message + */ + public function log($level, $message) + { + if ($this->writer !== null && $this->level <= $level) { + foreach ($this->configErrors as $error_message) { + $this->writer->log(static::ERROR, $error_message); + } + + $this->writer->log($level, $message); + } + } + + /** + * Return a string representation of the passed arguments + * + * This method provides three different processing techniques: + * - If the only passed argument is a string it is returned unchanged + * - If the only passed argument is an exception it is formatted as follows: + * <name> in <file>:<line> with message: <message>[ <- <name> ...] + * - If multiple arguments are passed the first is interpreted as format-string + * that gets substituted with the remaining ones which can be of any type + * + * @param array $arguments The arguments to format + * + * @return string The formatted result + */ + protected static function formatMessage(array $arguments) + { + if (count($arguments) === 1) { + $message = $arguments[0]; + + if ($message instanceof Exception) { + $messages = array(); + $error = $message; + do { + $messages[] = IcingaException::describe($error); + } while ($error = $error->getPrevious()); + $message = implode(' <- ', $messages); + } + + return $message; + } + + return vsprintf( + array_shift($arguments), + array_map( + function ($a) { + return is_string($a) ? $a : ($a instanceof Exception + ? IcingaException::describe($a) + : Json::encode($a)); + }, + $arguments + ) + ); + } + + /** + * Log a message with severity ERROR + * + * @param mixed $arg,... A string, exception or format-string + substitutions + */ + public static function error() + { + if (static::$instance !== null && func_num_args() > 0) { + static::$instance->log(static::ERROR, static::formatMessage(func_get_args())); + } + } + + /** + * Log a message with severity WARNING + * + * @param mixed $arg,... A string, exception or format-string + substitutions + */ + public static function warning() + { + if (static::$instance !== null && func_num_args() > 0) { + static::$instance->log(static::WARNING, static::formatMessage(func_get_args())); + } + } + + /** + * Log a message with severity INFO + * + * @param mixed $arg,... A string, exception or format-string + substitutions + */ + public static function info() + { + if (static::$instance !== null && func_num_args() > 0) { + static::$instance->log(static::INFO, static::formatMessage(func_get_args())); + } + } + + /** + * Log a message with severity DEBUG + * + * @param mixed $arg,... A string, exception or format-string + substitutions + */ + public static function debug() + { + if (static::$instance !== null && func_num_args() > 0) { + static::$instance->log(static::DEBUG, static::formatMessage(func_get_args())); + } + } + + /** + * Get the log writer to use + * + * @return \Icinga\Application\Logger\LogWriter + */ + public function getWriter() + { + return $this->writer; + } + + /** + * Is the logger writing to Syslog? + * + * @return bool + */ + public static function writesToSyslog() + { + return static::$instance && static::$instance->getWriter() instanceof SyslogWriter; + } + + /** + * Is the logger writing to a file? + * + * @return bool + */ + public static function writesToFile() + { + return static::$instance && static::$instance->getWriter() instanceof FileWriter; + } + + /** + * Get this' instance + * + * @return static + */ + public static function getInstance() + { + return static::$instance; + } +} diff --git a/library/Icinga/Application/Logger/LogWriter.php b/library/Icinga/Application/Logger/LogWriter.php new file mode 100644 index 0000000..019bdad --- /dev/null +++ b/library/Icinga/Application/Logger/LogWriter.php @@ -0,0 +1,30 @@ +<?php +/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Application\Logger; + +use Icinga\Data\ConfigObject; + +/** + * Abstract class for writers that write messages to a log + */ +abstract class LogWriter +{ + /** + * @var ConfigObject + */ + protected $config; + + /** + * Create a new log writer initialized with the given configuration + */ + public function __construct(ConfigObject $config) + { + $this->config = $config; + } + + /** + * Log a message with the given severity + */ + abstract public function log($severity, $message); +} diff --git a/library/Icinga/Application/Logger/Writer/FileWriter.php b/library/Icinga/Application/Logger/Writer/FileWriter.php new file mode 100644 index 0000000..6b4ed54 --- /dev/null +++ b/library/Icinga/Application/Logger/Writer/FileWriter.php @@ -0,0 +1,80 @@ +<?php +/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Application\Logger\Writer; + +use Exception; +use Icinga\Data\ConfigObject; +use Icinga\Application\Logger; +use Icinga\Application\Logger\LogWriter; +use Icinga\Exception\ConfigurationError; +use Icinga\Util\File; + +/** + * Log to a file + */ +class FileWriter extends LogWriter +{ + /** + * Path to the file + * + * @var string + */ + protected $file; + + /** + * Create a new file log writer + * + * @param ConfigObject $config + * + * @throws ConfigurationError If the configuration directive 'file' is missing or if the path to 'file' does + * not exist or if writing to 'file' is not possible + */ + public function __construct(ConfigObject $config) + { + if ($config->file === null) { + throw new ConfigurationError('Required logging configuration directive \'file\' missing'); + } + $this->file = $config->file; + + if (substr($this->file, 0, 6) !== 'php://' && ! file_exists(dirname($this->file))) { + throw new ConfigurationError( + 'Log path "%s" does not exist', + dirname($this->file) + ); + } + + try { + $this->write(''); // Avoid to handle such errors on every write access + } catch (Exception $e) { + throw new ConfigurationError( + 'Cannot write to log file "%s" (%s)', + $this->file, + $e->getMessage() + ); + } + } + + /** + * Log a message + * + * @param int $level The logging level + * @param string $message The log message + */ + public function log($level, $message) + { + $this->write(date('c') . ' - ' . Logger::$levels[$level] . ' - ' . $message . PHP_EOL); + } + + /** + * Write a message to the log + * + * @param string $message + */ + protected function write($message) + { + $file = new File($this->file, 'a'); + $file->fwrite($message); + $file->fflush(); + } +} diff --git a/library/Icinga/Application/Logger/Writer/PhpWriter.php b/library/Icinga/Application/Logger/Writer/PhpWriter.php new file mode 100644 index 0000000..dedb2bd --- /dev/null +++ b/library/Icinga/Application/Logger/Writer/PhpWriter.php @@ -0,0 +1,39 @@ +<?php +/* Icinga Web 2 | (c) 2016 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Application\Logger\Writer; + +use Icinga\Application\Logger; +use Icinga\Application\Logger\LogWriter; +use Icinga\Data\ConfigObject; +use Icinga\Exception\NotWritableError; + +/** + * Log to the webserver log, a file or syslog + * + * @see https://secure.php.net/manual/en/errorfunc.configuration.php#ini.error-log + */ +class PhpWriter extends LogWriter +{ + /** + * Prefix to prepend to each message + * + * @var string + */ + protected $ident; + + public function __construct(ConfigObject $config) + { + parent::__construct($config); + $this->ident = $config->get('application', 'icingaweb2'); + } + + public function log($severity, $message) + { + if (ini_get('error_log') === 'syslog') { + $message = str_replace("\n", ' ', $message); + } + + error_log($this->ident . ': ' . Logger::$levels[$severity] . ' - ' . $message); + } +} diff --git a/library/Icinga/Application/Logger/Writer/StderrWriter.php b/library/Icinga/Application/Logger/Writer/StderrWriter.php new file mode 100644 index 0000000..2f35ff2 --- /dev/null +++ b/library/Icinga/Application/Logger/Writer/StderrWriter.php @@ -0,0 +1,61 @@ +<?php +/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Application\Logger\Writer; + +use Icinga\Cli\Screen; +use Icinga\Application\Logger; +use Icinga\Application\Logger\LogWriter; + +/** + * Class to write log messages to STDERR + */ +class StderrWriter extends LogWriter +{ + /** + * The current Screen in use + * + * @var Screen + */ + protected $screen; + + /** + * Return the current Screen + * + * @return Screen + */ + protected function screen() + { + if ($this->screen === null) { + $this->screen = Screen::instance(STDERR); + } + + return $this->screen; + } + + /** + * Log a message with the given severity + * + * @param int $severity The severity to use + * @param string $message The message to log + */ + public function log($severity, $message) + { + switch ($severity) { + case Logger::ERROR: + $color = 'red'; + break; + case Logger::WARNING: + $color = 'yellow'; + break; + case Logger::INFO: + $color = 'green'; + break; + case Logger::DEBUG: + $color = 'blue'; + break; + } + + file_put_contents('php://stderr', $this->screen()->colorize($message, $color) . "\n"); + } +} diff --git a/library/Icinga/Application/Logger/Writer/StdoutWriter.php b/library/Icinga/Application/Logger/Writer/StdoutWriter.php new file mode 100644 index 0000000..a6f43e5 --- /dev/null +++ b/library/Icinga/Application/Logger/Writer/StdoutWriter.php @@ -0,0 +1,13 @@ +<?php +/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Application\Logger\Writer; + +/** + * Deprecated, compat only. + * + * Use Icinga\Application\Logger\Writer\StderrWriter instead. + */ +class StdoutWriter extends StderrWriter +{ +} diff --git a/library/Icinga/Application/Logger/Writer/SyslogWriter.php b/library/Icinga/Application/Logger/Writer/SyslogWriter.php new file mode 100644 index 0000000..93efc2a --- /dev/null +++ b/library/Icinga/Application/Logger/Writer/SyslogWriter.php @@ -0,0 +1,90 @@ +<?php +/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Application\Logger\Writer; + +use Icinga\Data\ConfigObject; +use Icinga\Application\Logger; +use Icinga\Application\Logger\LogWriter; +use Icinga\Exception\ConfigurationError; + +/** + * Log to the syslog service + */ +class SyslogWriter extends LogWriter +{ + /** + * Syslog facility + * + * @var int + */ + protected $facility; + + /** + * Prefix to prepend to each message + * + * @var string + */ + protected $ident; + + /** + * Known syslog facilities + * + * @var array + */ + public static $facilities = array( + 'user' => LOG_USER, + 'local0' => LOG_LOCAL0, + 'local1' => LOG_LOCAL1, + 'local2' => LOG_LOCAL2, + 'local3' => LOG_LOCAL3, + 'local4' => LOG_LOCAL4, + 'local5' => LOG_LOCAL5, + 'local6' => LOG_LOCAL6, + 'local7' => LOG_LOCAL7 + ); + + /** + * Log level to syslog severity map + * + * @var array + */ + public static $severityMap = array( + Logger::ERROR => LOG_ERR, + Logger::WARNING => LOG_WARNING, + Logger::INFO => LOG_INFO, + Logger::DEBUG => LOG_DEBUG + ); + + /** + * Create a new syslog log writer + * + * @param ConfigObject $config + */ + public function __construct(ConfigObject $config) + { + $this->ident = $config->get('application', 'icingaweb2'); + + $configuredFacility = $config->get('facility', 'user'); + if (! isset(static::$facilities[$configuredFacility])) { + throw new ConfigurationError( + 'Invalid logging facility: "%s" (expected one of: %s)', + $configuredFacility, + implode(', ', array_keys(static::$facilities)) + ); + } + $this->facility = static::$facilities[$configuredFacility]; + } + + /** + * Log a message + * + * @param int $level The logging level + * @param string $message The log message + */ + public function log($level, $message) + { + openlog($this->ident, LOG_PID, $this->facility); + syslog(static::$severityMap[$level], str_replace("\n", ' ', $message)); + } +} |