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<?php
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/*
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* This file is part of the Monolog package.
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*
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* (c) Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Monolog;
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use InvalidArgumentException;
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/**
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* Monolog log registry
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*
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* Allows to get `Logger` instances in the global scope
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* via static method calls on this class.
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*
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* <code>
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* $application = new Monolog\Logger('application');
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* $api = new Monolog\Logger('api');
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*
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* Monolog\Registry::addLogger($application);
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* Monolog\Registry::addLogger($api);
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*
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* function testLogger()
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* {
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* Monolog\Registry::api()->addError('Sent to $api Logger instance');
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* Monolog\Registry::application()->addError('Sent to $application Logger instance');
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* }
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* </code>
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*
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* @author Tomas Tatarko <tomas@tatarko.sk>
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*/
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class Registry
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{
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/**
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* List of all loggers in the registry (by named indexes)
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*
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* @var Logger[]
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*/
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private static $loggers = array();
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/**
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* Adds new logging channel to the registry
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*
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* @param Logger $logger Instance of the logging channel
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* @param string|null $name Name of the logging channel ($logger->getName() by default)
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* @param bool $overwrite Overwrite instance in the registry if the given name already exists?
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* @throws \InvalidArgumentException If $overwrite set to false and named Logger instance already exists
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*/
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public static function addLogger(Logger $logger, $name = null, $overwrite = false)
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{
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$name = $name ?: $logger->getName();
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if (isset(self::$loggers[$name]) && !$overwrite) {
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throw new InvalidArgumentException('Logger with the given name already exists');
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}
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self::$loggers[$name] = $logger;
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}
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/**
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* Checks if such logging channel exists by name or instance
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*
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* @param string|Logger $logger Name or logger instance
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*/
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public static function hasLogger($logger)
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{
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if ($logger instanceof Logger) {
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$index = array_search($logger, self::$loggers, true);
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return false !== $index;
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} else {
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return isset(self::$loggers[$logger]);
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}
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}
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/**
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* Removes instance from registry by name or instance
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*
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* @param string|Logger $logger Name or logger instance
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*/
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public static function removeLogger($logger)
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{
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if ($logger instanceof Logger) {
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if (false !== ($idx = array_search($logger, self::$loggers, true))) {
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unset(self::$loggers[$idx]);
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}
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} else {
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unset(self::$loggers[$logger]);
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}
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}
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/**
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* Clears the registry
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*/
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public static function clear()
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{
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self::$loggers = array();
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}
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/**
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* Gets Logger instance from the registry
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*
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* @param string $name Name of the requested Logger instance
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* @throws \InvalidArgumentException If named Logger instance is not in the registry
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* @return Logger Requested instance of Logger
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*/
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public static function getInstance($name)
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{
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if (!isset(self::$loggers[$name])) {
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throw new InvalidArgumentException(sprintf('Requested "%s" logger instance is not in the registry', $name));
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}
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return self::$loggers[$name];
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}
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/**
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* Gets Logger instance from the registry via static method call
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*
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* @param string $name Name of the requested Logger instance
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* @param array $arguments Arguments passed to static method call
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* @throws \InvalidArgumentException If named Logger instance is not in the registry
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* @return Logger Requested instance of Logger
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*/
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public static function __callStatic($name, $arguments)
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{
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return self::getInstance($name);
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}
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}
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