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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Log\Target\File; |
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use RuntimeException; |
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use Yiisoft\Files\FileHelper; |
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use Yiisoft\Log\Target; |
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use function chmod; |
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use function clearstatcache; |
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use function dirname; |
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use function error_get_last; |
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use function fclose; |
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use function file_exists; |
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use function file_put_contents; |
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use function flock; |
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use function fopen; |
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use function fwrite; |
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use function sprintf; |
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use function strlen; |
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use const FILE_APPEND; |
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use const LOCK_EX; |
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use const LOCK_UN; |
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/** |
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* FileTarget records log messages in a file. |
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* |
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* The log file is specified via {@see FileTarget::$logFile}. If {@see FileRotator} is used and the size of the log |
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* file exceeds {@see FileRotator::$maxFileSize}, a rotation will be performed, which renames the current log file by |
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* suffixing the file name with '.1'. All existing log files are moved backwards by one place, i.e., '.2' to '.3', |
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* '.1' to '.2', and so on. The property {@see FileRotator::$maxFiles} specifies how many history files to keep. |
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*/ |
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final class FileTarget extends Target |
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{ |
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/** |
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* @var string The log file path. If not set, it will use the "/tmp/app.log" file. |
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* The directory containing the log files will be automatically created if not existing. |
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*/ |
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private string $logFile; |
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/** |
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* @var int The permission to be set for newly created directories. |
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* This value will be used by PHP chmod() function. No umask will be applied. |
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* Defaults to 0775, meaning the directory is read-writable by owner and group, |
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* but read-only for other users. |
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*/ |
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private int $dirMode; |
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/** |
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* @var int|null The permission to be set for newly created log files. |
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* This value will be used by PHP chmod() function. No umask will be applied. |
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* If not set, the permission will be determined by the current environment. |
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*/ |
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private ?int $fileMode; |
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private ?FileRotatorInterface $rotator; |
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/** |
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* @param string $logFile The log file path. If not set, it will use the "/tmp/app.log" file. |
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* @param FileRotatorInterface|null $rotator The instance that takes care of rotating files. |
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* @param int $dirMode The permission to be set for newly created directories. |
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* @param int|null $fileMode The permission to be set for newly created log files. |
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*/ |
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public function __construct( |
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string $logFile = '/tmp/app.log', |
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FileRotatorInterface $rotator = null, |
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int $dirMode = 0775, |
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int $fileMode = null |
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) { |
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$this->logFile = $logFile; |
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$this->rotator = $rotator; |
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$this->dirMode = $dirMode; |
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$this->fileMode = $fileMode; |
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parent::__construct(); |
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} |
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/** |
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* Writes log messages to a file. |
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* |
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* @throws RuntimeException For unable to open or write complete log to file. |
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*/ |
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protected function export(): void |
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{ |
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$logPath = dirname($this->logFile); |
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if (!file_exists($logPath)) { |
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FileHelper::createDirectory($logPath, $this->dirMode); |
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} |
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$text = $this->formatMessages("\n"); |
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if (($filePointer = @fopen($this->logFile, 'ab')) === false) { |
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throw new RuntimeException(sprintf('The log file "%s" could not be opened.', $this->logFile)); |
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} |
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flock($filePointer, LOCK_EX); |
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if ($this->rotator !== null) { |
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// clear stat cache to ensure getting the real current file size and not a cached one |
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// this may result in rotating twice when cached file size is used on subsequent calls |
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clearstatcache(); |
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} |
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if ($this->rotator !== null && $this->rotator->isNeedRotateFile($this->logFile)) { |
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flock($filePointer, LOCK_UN); |
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fclose($filePointer); |
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$this->rotator->rotateFile($this->logFile); |
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$writeResult = file_put_contents($this->logFile, $text, FILE_APPEND | LOCK_EX); |
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} else { |
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$writeResult = fwrite($filePointer, $text); |
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flock($filePointer, LOCK_UN); |
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fclose($filePointer); |
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} |
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$this->checkWrittenResult($writeResult, $text); |
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if ($this->fileMode !== null) { |
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chmod($this->logFile, $this->fileMode); |
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} |
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} |
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/** |
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* Checks the written result. |
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* |
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* @param int|false $writeResult The number of bytes written to the file, or FALSE if an error occurs. |
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* @param string $text The text written to the file. |
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* |
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* @throws RuntimeException For unable to export log through file. |
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*/ |
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private function checkWrittenResult($writeResult, string $text): void |
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{ |
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if ($writeResult === false) { |
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throw new RuntimeException(sprintf( |
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'Unable to export log through file: %s', |
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error_get_last()['message'] ?? '', |
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)); |
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} |
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$textSize = strlen($text); |
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if ($writeResult < $textSize) { |
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throw new RuntimeException(sprintf( |
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'Unable to export whole log through file. Wrote %d out of %d bytes.', |
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$writeResult, |
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$textSize, |
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)); |
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} |
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} |
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} |
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yiisoft /
log-target-file
