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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Log; |
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use Psr\Log\InvalidArgumentException; |
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use Psr\Log\LoggerTrait; |
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use Psr\Log\LogLevel; |
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use Yiisoft\VarDumper\VarDumper; |
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use function is_scalar; |
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use function is_object; |
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use function method_exists; |
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use function preg_replace_callback; |
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/** |
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* Message is a data object that stores log message data. |
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*/ |
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final class Message |
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{ |
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/** |
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* @var string Log message level. |
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* |
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* @see LogLevel See constants for valid level names. |
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*/ |
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private string $level; |
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/** |
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* @var string Log message. |
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*/ |
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private string $message; |
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/** |
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* @var array Log message context. |
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* |
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* Message context has a following keys: |
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* |
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* - category: string, message category. |
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* - memory: int, memory usage in bytes, obtained by `memory_get_usage()`. |
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* - time: float, message timestamp obtained by microtime(true). |
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* - trace: array, debug backtrace, contains the application code call stacks. |
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*/ |
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private array $context; |
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/** |
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* @param mixed $level Log message level. |
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* @param mixed $message Log message. |
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* @param array $context Log message context. |
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* |
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* @throws InvalidArgumentException for invalid log message level. |
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* |
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* @see LoggerTrait::log() |
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* @see LogLevel |
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*/ |
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public function __construct($level, $message, array $context = []) |
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{ |
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$this->level = Logger::validateLevel($level); |
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$this->message = $this->parse($message, $context); |
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$this->context = $context; |
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} |
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/** |
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* Gets a log message level. |
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* |
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* @return string Log message level. |
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*/ |
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public function level(): string |
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{ |
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return $this->level; |
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} |
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/** |
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* Gets a log message. |
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* |
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* @return string Log message. |
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*/ |
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public function message(): string |
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{ |
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return $this->message; |
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} |
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/** |
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* Returns a value of the context parameter for the specified name. |
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* |
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* If no name is specified, the entire context is returned. |
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* |
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* @param string|null $name The context parameter name. |
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* @param mixed $default If the context parameter does not exist, the `$default` will be returned. |
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* |
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* @return mixed The context parameter value. |
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*/ |
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public function context(string $name = null, $default = null) |
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{ |
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if ($name === null) { |
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return $this->context; |
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} |
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return $this->context[$name] ?? $default; |
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} |
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/** |
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* Parses log message resolving placeholders in the form: "{foo}", |
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* where foo will be replaced by the context data in key "foo". |
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* |
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* @param mixed $message Raw log message. |
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* @param array $context Message context. |
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* |
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* @return string Parsed message. |
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*/ |
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private function parse($message, array $context): string |
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{ |
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$message = (is_scalar($message) || (is_object($message) && method_exists($message, '__toString'))) |
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? (string) $message |
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: VarDumper::create($message)->export() |
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; |
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return preg_replace_callback('/{([\w.]+)}/', static function (array $matches) use ($context) { |
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$placeholderName = $matches[1]; |
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if (isset($context[$placeholderName])) { |
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return (string) $context[$placeholderName]; |
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} |
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return $matches[0]; |
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}, $message); |
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} |
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} |
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yiisoft /
log
