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<?php |
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declare(strict_types = 1); |
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/** |
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* Micro |
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* |
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* @author Raffael Sahli <[email protected]> |
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* @copyright Copyright (c) 2017 gyselroth GmbH (https://gyselroth.com) |
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* @license MIT https://opensource.org/licenses/MIT |
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*/ |
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namespace Micro; |
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use \Psr\Log\AbstractLogger; |
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use \Psr\Log\LogLevel; |
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use \Psr\Log\LoggerInterface; |
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use \Micro\Log\Adapter\AbstractAdapter; |
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use \Micro\Log\Adapter\AdapterInterface; |
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use \Micro\Config; |
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use \Micro\Log\Exception; |
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use \Micro\Container\AdapterAwareInterface; |
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class Log extends AbstractLogger implements LoggerInterface, AdapterAwareInterface |
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{ |
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/** |
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* Priorities |
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*/ |
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const PRIORITIES = [ |
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LogLevel::EMERGENCY => 0, |
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LogLevel::ALERT => 1, |
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LogLevel::CRITICAL => 2, |
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LogLevel::ERROR => 3, |
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LogLevel::WARNING => 4, |
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LogLevel::NOTICE => 5, |
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LogLevel::INFO => 6, |
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LogLevel::DEBUG => 7, |
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]; |
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/** |
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* Adapters |
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* |
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* @var array |
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*/ |
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protected $adapter = []; |
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/** |
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* static context |
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* |
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* @var array |
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*/ |
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protected $context = []; |
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/** |
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* Initialize logger |
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* |
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* @param Iterable $config |
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* @return void |
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*/ |
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public function __construct(? Iterable $config = null) |
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{ |
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$this->setOptions($config); |
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} |
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/** |
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* Set options |
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* |
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* @param Iterable $config |
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* @return Log |
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*/ |
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public function setOptions(? Iterable $config = null): Log |
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{ |
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if ($config === null) { |
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return $this; |
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} |
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foreach ($config as $option => $value) { |
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switch($option) { |
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case 'adapter': |
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foreach($value as $name => $adapter) { |
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$this->injectAdapter($name, $adapter); |
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} |
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break; |
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default: |
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throw new Exception('invalid option '.$option.' given'); |
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} |
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} |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getDefaultAdapter(): array |
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{ |
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return []; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function hasAdapter(string $name): bool |
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{ |
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return isset($this->adapter[$name]); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function injectAdapter($adapter, ?string $name=null) : AdapterAwareInterface |
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{ |
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if(!($adapter instanceof AdapterInterface)) { |
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throw new Exception('adapter needs to implement AdapterInterface'); |
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} |
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if($name === null) { |
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$name = get_class($adapter); |
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} |
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if ($this->hasAdapter($name)) { |
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throw new Exception('log adapter '.$name.' is already registered'); |
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} |
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$this->adapter[$name] = $adapter; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getAdapter(string $name) |
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{ |
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if (!$this->hasAdapter($name)) { |
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throw new Exception('log adapter '.$name.' is not registered'); |
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} |
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return $this->adapter[$name]; |
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} |
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/** |
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* Get adapters |
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* |
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* @param array $adapters |
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* @return array |
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*/ |
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public function getAdapters(array $adapters = []): array |
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{ |
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if (empty($adapter)) { |
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return $this->adapter; |
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} else { |
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$list = []; |
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foreach ($adapter as $name) { |
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if (!$this->hasAdapter($name)) { |
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throw new Exception('log adapter '.$name.' is not registered'); |
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} |
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$list[$name] = $this->adapter[$name]; |
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} |
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return $list; |
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} |
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} |
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/** |
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* Log message |
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* |
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* @param string $level |
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* @param string $message |
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* @param array $context |
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* @return bool |
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*/ |
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public function log($level, $message, array $context = []): bool |
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{ |
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if (!array_key_exists($level, self::PRIORITIES)) { |
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throw new Exception('log level '.$level.' is unkown'); |
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} |
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foreach ($this->adapter as $adapter) { |
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$prio = $adapter->getLevel(); |
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if (self::PRIORITIES[$level] <= $prio) { |
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$msg = $this->_format($message, $adapter->getFormat(), $adapter->getDateFormat(), $level, $context); |
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$adapter->log($level, $msg); |
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} |
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} |
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return true; |
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} |
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/** |
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* Add static context |
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* |
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* @param string $name |
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* @param string $value |
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* @return Log |
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*/ |
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public function addContext(string $name, string $value): Log |
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{ |
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$this->context[$name] = $value; |
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return $this; |
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} |
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/** |
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* Log message |
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* |
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* @param string $message |
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* @param string $format |
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* @param string $date_format |
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* @param string $level |
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* @param array $context |
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* @return string |
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*/ |
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protected function _format(string $message, string $format, string $date_format, string $level, array $context = []): string |
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{ |
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$parsed = preg_replace_callback('/(\{(([a-z]\.*)+)\})/', function($match) use ($message, $level, $date_format, $context) { |
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$key = ''; |
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$context = array_merge($this->context, $context); |
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if ($sub_context = strpos($match[2], '.')) { |
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$parts = explode('.', $match[2]); |
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$name = $parts[0]; |
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$key = $parts[1]; |
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} else { |
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$name = $match[2]; |
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} |
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switch ($name) { |
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case 'level': |
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return $match[0] = $level; |
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break; |
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case 'date': |
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return $match[0] = date($date_format); |
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break; |
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case 'message': |
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$replace = []; |
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foreach ($context as $key => $val) { |
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if (!is_array($val) && (!is_object($val) || method_exists($val, '__toString'))) { |
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$replace['{'.$key.'}'] = $val; |
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} else { |
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$replace['{'.$key.'}'] = json_encode($val); |
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} |
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} |
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return $match[0] = strtr($message, $replace); |
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break; |
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case 'context': |
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if ($sub_context) { |
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if (array_key_exists($key, $context)) { |
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if (!is_array($context[$key]) && (!is_object($context[$key]) || method_exists($context[$key], '__toString'))) { |
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return $match[0] = $context[$key]; |
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} else { |
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return $match[0] = json_encode($context[$key]); |
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} |
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} |
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} else { |
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return $match[0] = json_encode($context); |
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} |
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break; |
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} |
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}, $format); |
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return $parsed; |
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} |
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} |
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Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: