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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 Yiisoft\Files\FileHelper; |
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use Yiisoft\Log\LogRuntimeException; |
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use Yiisoft\Log\Target; |
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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 logFile}. If the size of the log file exceeds |
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* {@see maxFileSize} (in kilo-bytes), a rotation will be performed, which renames |
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* the current log file by suffixing the file name with '.1'. All existing log |
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* files are moved backwards by one place, i.e., '.2' to '.3', '.1' to '.2', and so on. |
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* The property {@see maxLogFiles} specifies how many history files to keep. |
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*/ |
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class FileTarget extends Target |
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{ |
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/** |
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* @var string 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|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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/** |
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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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private ?FileRotatorInterface $rotator; |
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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 = $fileMode; |
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} |
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/** |
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* Writes log messages to a file. |
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* @throws LogRuntimeException if unable to open or write complete log to file |
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*/ |
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public function export(): void |
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{ |
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$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 = implode("\n", array_map([$this, 'formatMessage'], $this->getMessages())) . "\n"; |
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if (($fp = fopen($this->logFile, 'ab')) === false) { |
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throw new LogRuntimeException("Unable to append to log file: {$this->logFile}"); |
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} |
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@flock($fp, LOCK_EX); |
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if ($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 ($this->rotator !== null && @filesize($this->logFile) > $this->rotator->getMaxFileSize() * 1024) { |
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@flock($fp, LOCK_UN); |
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@fclose($fp); |
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$this->rotator->rotateFile($this->logFile); |
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$writeResult = @file_put_contents($this->logFile, $text, FILE_APPEND | LOCK_EX); |
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$this->checkWrittenResult($writeResult, $text); |
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} else { |
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$writeResult = @fwrite($fp, $text); |
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$this->checkWrittenResult($writeResult, $text); |
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@flock($fp, LOCK_UN); |
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@fclose($fp); |
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} |
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if ($this->fileMode !== null) { |
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@chmod($this->logFile, $this->fileMode); |
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} |
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} |
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private function checkWrittenResult($writeResult, string $text): void |
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{ |
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if ($writeResult === false) { |
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$error = error_get_last(); |
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throw new LogRuntimeException("Unable to export log through file: {$error['message']}"); |
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} |
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$textSize = strlen($text); |
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if ($writeResult < $textSize) { |
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throw new LogRuntimeException("Unable to export whole log through file! Wrote $writeResult out of $textSize bytes."); |
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} |
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} |
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} |
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yiisoft /
log-target-file
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If you suppress an error, we recommend checking for the error condition explicitly: