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<?php |
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namespace League\Tactician\Logger; |
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use League\Tactician\Logger\Formatter\Formatter; |
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use League\Tactician\Middleware; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\LogLevel; |
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use Exception; |
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/** |
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* Add support for writing a message to the log whenever a command is received, |
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* handled or failed. |
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*/ |
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class LoggerMiddleware implements Middleware |
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{ |
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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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* @var Formatter |
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*/ |
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private $formatter; |
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/** |
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* @var string |
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*/ |
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private $commandReceivedLogLevel; |
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/** |
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* @var string |
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*/ |
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private $commandHandledLogLevel; |
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/** |
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* @var string |
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*/ |
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private $commandFailedLogLevel; |
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/** |
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* @param Formatter $formatter |
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* @param LoggerInterface $logger |
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* @param string $commandReceivedLogLevel |
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* @param string $commandHandledLogLevel |
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* @param string $commandFailedLogLevel |
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*/ |
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public function __construct( |
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Formatter $formatter, |
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LoggerInterface $logger, |
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$commandReceivedLogLevel = LogLevel::DEBUG, |
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$commandHandledLogLevel = LogLevel::DEBUG, |
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$commandFailedLogLevel = LogLevel::ERROR |
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) { |
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$this->formatter = $formatter; |
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$this->logger = $logger; |
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$this->commandReceivedLogLevel = $commandReceivedLogLevel; |
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$this->commandHandledLogLevel = $commandHandledLogLevel; |
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$this->commandFailedLogLevel = $commandFailedLogLevel; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function execute($command, callable $next) |
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{ |
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$commandContext = $this->formatter->commandContext($command); |
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$this->log( |
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$this->commandReceivedLogLevel, |
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$this->formatter->commandReceived($command), |
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$commandContext |
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); |
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try { |
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$returnValue = $next($command); |
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} catch (Exception $e) { |
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$this->log( |
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$this->commandFailedLogLevel, |
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$this->formatter->commandFailed($command), |
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$this->formatter->failureContext($commandContext, $e) |
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); |
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throw $e; |
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} |
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$this->log( |
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$this->commandHandledLogLevel, |
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$this->formatter->commandHandled($command), |
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$commandContext |
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); |
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return $returnValue; |
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} |
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/** |
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* Write a message to the log or skip over it if the message is null |
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* |
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* @param string $logLevel |
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* @param string|null $message |
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* @param array $context |
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*/ |
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protected function log($logLevel, $message, array $context = []) |
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{ |
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if ($message === null) { |
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return; |
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} |
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$this->logger->log($logLevel, $message, $context); |
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} |
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} |
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