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<?php |
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declare(strict_types=1); |
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namespace Nofw\Error; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\LogLevel; |
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/** |
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* This handler can be used to log errors using a PSR-3 logger. |
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* |
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* @author Márk Sági-Kazár <[email protected]> |
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*/ |
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final class Psr3ErrorHandler implements ErrorHandler |
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{ |
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/** |
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* Defines which error levels should be mapped to certain error types by default. |
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*/ |
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private const DEFAULT_ERROR_LEVEL_MAP = [ |
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\ParseError::class => LogLevel::CRITICAL, |
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\Throwable::class => LogLevel::ERROR, |
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]; |
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/** |
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* The default log level. |
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*/ |
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private const DEFAULT_LOG_LEVEL = LogLevel::ERROR; |
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/** |
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* The key under which the error should be passed to the log context. |
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*/ |
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public const ERROR_KEY = 'error'; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* Defines which error levels should be mapped to certain error types. |
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* |
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* Note: The errors are checked in order, so if you want to define fallbacks for classes higher in the tree |
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* make sure to add them to the end of the map. |
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* |
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* @var array |
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*/ |
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private $levelMap = []; |
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/** |
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* Ignores the severity when detecting the log level. |
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* |
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* @var bool |
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*/ |
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private $ignoreSeverity = false; |
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/** |
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* Enables the handler to accept detecting non-PSR-3 log levels. |
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* |
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* Note: when detecting an invalid level the handler will silently fall back to the default. |
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* |
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* @var bool |
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*/ |
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private $allowNonPsrLevels = false; |
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public function __construct(LoggerInterface $logger, array $levelMap = []) |
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{ |
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$this->logger = $logger; |
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// Keep user maintained order |
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$this->levelMap = array_replace($levelMap, self::DEFAULT_ERROR_LEVEL_MAP, $levelMap); |
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} |
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/** |
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* Ignores the severity when detecting the log level. |
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*/ |
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public function ignoreSeverity(bool $ignoreSeverity = true): void |
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{ |
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$this->ignoreSeverity = $ignoreSeverity; |
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} |
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/** |
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* Enables the handler to accept detecting non-PSR-3 log levels. |
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*/ |
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public function allowNonPsrLevels(bool $allowNonPsrLevels = true): void |
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{ |
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$this->allowNonPsrLevels = $allowNonPsrLevels; |
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} |
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public function handle(\Throwable $t, array $context = []): void |
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{ |
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$context[self::ERROR_KEY] = $t; |
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$this->logger->log( |
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$this->getLevel($t, $context), |
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sprintf( |
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'%s \'%s\' with message \'%s\' in %s(%s)', |
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$this->getType($t), |
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get_class($t), |
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$t->getMessage(), |
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$t->getFile(), |
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$t->getLine() |
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), |
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$context |
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); |
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} |
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/** |
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* Determines the level for the error. |
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*/ |
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private function getLevel(\Throwable $t, array $context): string |
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{ |
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// Check if the severity matches a PSR-3 log level |
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if ( |
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false === $this->ignoreSeverity && |
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isset($context[Context::SEVERITY]) && |
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is_string($context[Context::SEVERITY]) && |
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$this->validateLevel($context[Context::SEVERITY]) |
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) { |
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return $context[Context::SEVERITY]; |
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} |
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// Find the log level based on the error in the level map (avoid looping through the whole array) |
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// Note: this ignores the order defined in the map. |
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$class = get_class($t); |
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if (isset($this->levelMap[$class]) && $this->validateLevel($this->levelMap[$class])) { |
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return $this->levelMap[$class]; |
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} |
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// Find the log level based on the error in the level map |
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foreach ($this->levelMap as $className => $candidate) { |
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if ($t instanceof $className && $this->validateLevel($candidate)) { |
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return $candidate; |
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} |
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} |
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// Return the default log level |
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return self::DEFAULT_LOG_LEVEL; |
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} |
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/** |
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* Checks whether a log level exists. |
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*/ |
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private function checkLevel(string $level): bool |
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{ |
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return defined(sprintf('%s::%s', LogLevel::class, strtoupper($level))); |
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} |
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/** |
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* Validates whether a log level exists (if non-PSR levels are not allowed). |
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*/ |
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private function validateLevel(string $level): bool |
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{ |
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return $this->allowNonPsrLevels || $this->checkLevel($level); |
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} |
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/** |
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* Determines the error type. |
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*/ |
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private function getType(\Throwable $t): string |
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{ |
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if ($t instanceof \Exception) { |
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return 'Exception'; |
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} elseif ($t instanceof \Error) { |
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return 'Error'; |
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} |
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return 'Throwable'; |
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} |
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} |
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