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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 DateTime; |
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use Psr\Log\InvalidArgumentException; |
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use Psr\Log\LogLevel; |
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use Yiisoft\Arrays\ArrayHelper; |
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use Yiisoft\VarDumper\VarDumper; |
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use function array_merge; |
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use function count; |
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use function implode; |
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use function in_array; |
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use function is_array; |
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use function is_callable; |
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use function is_string; |
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use function rtrim; |
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use function strpos; |
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use function substr_compare; |
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/** |
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* Target is the base class for all log target classes. |
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* |
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* A log target object will filter the messages logged by {@see \Yiisoft\Log\Logger} according |
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* to its {@see Target::$levels} and {@see Target::$categories}. It may also export the filtered |
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* messages to specific destination defined by the target, such as emails, files. |
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* |
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* Level filter and category filter are combinatorial, i.e., only messages |
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* satisfying both filter conditions will be handled. Additionally, you |
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* may specify {@see Target::$except} to exclude messages of certain categories. |
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* |
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* For more details and usage information on Target, see the |
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* [guide article on logging & targets](guide:runtime-logging). |
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*/ |
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abstract class Target |
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{ |
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/** |
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* The default category will be used if the category was not passed in the message context {@see Target::$messages}. |
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*/ |
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public const DEFAULT_CATEGORY = 'application'; |
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/** |
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* @var array list of message categories that this target is interested in. |
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* Defaults to empty, meaning all categories. |
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* You can use an asterisk at the end of a category so that the category may be used to |
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* match those categories sharing the same common prefix. For example, 'Yiisoft\Db\*' will match |
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* categories starting with 'Yiisoft\Db\', such as `Yiisoft\Db\Connection`. |
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*/ |
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private array $categories = []; |
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/** |
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* @var array list of message categories that this target is NOT interested in. |
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* Defaults to empty, meaning no uninteresting messages. |
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* If this property is not empty, then any category listed here will be excluded from {@see Target::$categories}. |
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* You can use an asterisk at the end of a category so that the category can be used to |
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* match those categories sharing the same common prefix. For example, 'Yiisoft\Db\*' will match |
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* categories starting with 'Yiisoft\Db\', such as `Yiisoft\Db\Connection`. |
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* @see categories |
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*/ |
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private array $except = []; |
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/** |
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* @var array the message levels that this target is interested in. |
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* |
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* The parameter should be an array of interested level names. See {@see LogLevel} constants for valid level names. |
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* |
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* For example: |
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* |
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* ```php |
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* ['error', 'warning'], |
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* // or |
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* [LogLevel::ERROR, LogLevel::WARNING] |
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* ``` |
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* |
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* Defaults is empty array, meaning all available levels. |
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*/ |
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private array $levels = []; |
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/** |
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* @var array list of the PHP predefined variables that should be logged in a message. |
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* Note that a variable must be accessible via `$GLOBALS`. Otherwise it won't be logged. |
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* |
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* Defaults to `['_GET', '_POST', '_FILES', '_COOKIE', '_SESSION', '_SERVER']`. |
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* |
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* Each element can also be specified as one of the following: |
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* |
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* - `var` - `var` will be logged. |
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* - `var.key` - only `var[key]` key will be logged. |
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* - `!var.key` - `var[key]` key will be excluded. |
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* |
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* Note that if you need $_SESSION to logged regardless if session was used you have to open it right at |
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* the start of your request. |
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* |
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* @see \Yiisoft\Arrays\ArrayHelper::filter() |
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*/ |
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private array $logVars = ['_GET', '_POST', '_FILES', '_COOKIE', '_SESSION', '_SERVER']; |
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/** |
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* @var callable|null a PHP callable that returns a string to be prefixed to every exported message. |
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* |
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* If not set, {@see Target::getMessagePrefix()} will be used, which prefixes the message with context information |
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* such as user IP, user ID and session ID. |
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* |
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* The signature of the callable should be `function ($message)`. |
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*/ |
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private $prefix; |
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/** |
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* @var int how many messages should be accumulated before they are exported. |
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* Defaults to 1000. Note that messages will always be exported when the application terminates. |
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* Set this property to be 0 if you don't want to export messages until the application terminates. |
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*/ |
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private int $exportInterval = 1000; |
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/** |
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* @var array the messages that are retrieved from the logger so far by this log target. |
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* Please refer to {@see Logger::$messages} for the details about the message structure. |
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*/ |
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private array $messages = []; |
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/** |
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* @var string The date format for the log timestamp. |
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* Defaults to Y-m-d H:i:s.u |
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*/ |
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private string $timestampFormat = 'Y-m-d H:i:s.u'; |
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/** |
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* @var bool|callable |
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*/ |
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private $enabled = true; |
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/** |
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* Exports log {@see Target::$messages} to a specific destination. |
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* Child classes must implement this method. |
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*/ |
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abstract public function export(): void; |
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/** |
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* Processes the given log messages. |
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* This method will filter the given messages with {@see Target::$levels} and {@see Target::$categories}. |
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* And if requested, it will also export the filtering result to specific medium (e.g. email). |
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* @param array $messages log messages to be processed. See {@see Logger::$messages} for the structure |
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* of each message. |
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* @param bool $final whether this method is called at the end of the current application |
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*/ |
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public function collect(array $messages, bool $final): void |
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{ |
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$this->messages = array_merge( |
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$this->messages, |
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$this->filterMessages($messages, $this->levels, $this->categories, $this->except) |
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); |
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$count = count($this->messages); |
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if ($count > 0 && ($final || ($this->exportInterval > 0 && $count >= $this->exportInterval))) { |
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if (($context = $this->getContextMessage()) !== '') { |
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$this->messages[] = [ |
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LogLevel::INFO, |
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$context, |
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[ |
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'category' => static::DEFAULT_CATEGORY, |
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'time' => $_SERVER['REQUEST_TIME_FLOAT'] ?? \microtime(true) |
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] |
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]; |
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} |
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// set exportInterval to 0 to avoid triggering export again while exporting |
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$oldExportInterval = $this->exportInterval; |
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$this->exportInterval = 0; |
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$this->export(); |
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$this->exportInterval = $oldExportInterval; |
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$this->messages = []; |
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} |
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} |
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/** |
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* Generates the context information to be logged. |
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* The default implementation will dump user information, system variables, etc. |
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* @return string the context information. If an empty string, it means no context information. |
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*/ |
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protected function getContextMessage(): string |
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{ |
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$context = ArrayHelper::filter($GLOBALS, $this->logVars); |
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$result = []; |
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foreach ($context as $key => $value) { |
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$result[] = "\${$key} = " . VarDumper::create($value)->asString(); |
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} |
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return implode("\n\n", $result); |
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} |
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/** |
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* Filters the given messages according to their categories and levels. |
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* @param array $messages messages to be filtered. The message structure follows that in {@see Logger::$messages}. |
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* @param array $levels the message levels to filter by. Empty value means allowing all levels. |
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* @param array $categories the message categories to filter by. If empty, it means all categories are allowed. |
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* @param array $except the message categories to exclude. If empty, it means all categories are allowed. |
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* @return array the filtered messages. |
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* @throws InvalidArgumentException for invalid message structure. |
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*/ |
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protected function filterMessages( |
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array $messages, |
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array $levels = [], |
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array $categories = [], |
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array $except = [] |
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): array { |
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foreach ($messages as $i => $message) { |
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$this->checkMessageStructure($message); |
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if (!empty($levels) && !in_array($message[0], $levels, true)) { |
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unset($messages[$i]); |
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continue; |
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} |
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$messageCategory = $message[2]['category'] ?? ''; |
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$matched = empty($categories); |
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foreach ($categories as $category) { |
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if ( |
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($messageCategory && $messageCategory === $category) |
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|| ( |
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!empty($category) |
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&& substr_compare($category, '*', -1, 1) === 0 |
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&& strpos($messageCategory, rtrim($category, '*')) === 0 |
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) |
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) { |
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$matched = true; |
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break; |
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} |
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} |
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if ($matched) { |
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foreach ($except as $category) { |
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3 |
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$prefix = rtrim($category, '*'); |
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if ( |
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3 |
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(($messageCategory && $messageCategory === $category) || $prefix !== $category) |
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3 |
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&& strpos($messageCategory, $prefix) === 0 |
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) { |
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3 |
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$matched = false; |
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3 |
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break; |
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} |
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} |
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} |
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20 |
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if (!$matched) { |
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13 |
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unset($messages[$i]); |
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} |
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} |
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return $messages; |
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254
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} |
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255
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256
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/** |
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257
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* Checks message structure {@see Logger::$messages}. |
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258
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* @param mixed $message the log message to be checked. |
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* @throws InvalidArgumentException for invalid message structure. |
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260
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*/ |
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261
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32 |
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protected function checkMessageStructure($message): void |
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{ |
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263
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32 |
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if (!isset($message[0], $message[1], $message[2]) || !is_string($message[0]) || !is_array($message[2])) { |
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10 |
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throw new InvalidArgumentException('The message structure is not valid.'); |
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} |
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22 |
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} |
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267
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268
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/** |
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269
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* Formats a log message for display as a string. |
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270
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* @param array $message the log message to be formatted. |
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* The message structure follows that in {@see Logger::$messages}. |
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* @return string the formatted message. |
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273
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* @throws InvalidArgumentException for invalid message structure. |
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274
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*/ |
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275
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7 |
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protected function formatMessage(array $message): string |
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276
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{ |
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277
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7 |
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$this->checkMessageStructure($message); |
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2 |
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[$level, $text, $context] = $message; |
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279
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280
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2 |
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$category = $context['category'] ?? static::DEFAULT_CATEGORY; |
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281
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2 |
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$timestamp = $context['time'] ?? \microtime(true); |
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2 |
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$level = Logger::getLevelName($level); |
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283
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284
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2 |
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$traces = []; |
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285
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2 |
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if (isset($context['trace'])) { |
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286
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foreach ($context['trace'] as $trace) { |
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287
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if (isset($trace['file'], $trace['line'])) { |
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288
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$traces[] = "in {$trace['file']}:{$trace['line']}"; |
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} |
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290
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} |
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291
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} |
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293
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2 |
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$prefix = $this->getMessagePrefix($message); |
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295
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2 |
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return $this->getTime($timestamp) . " {$prefix}[$level][$category] $text" |
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2 |
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. (empty($traces) ? '' : "\n " . implode("\n ", $traces)); |
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297
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} |
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298
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299
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/** |
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300
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* Returns a string to be prefixed to the given message. |
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301
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* If {@see Target::$prefix} is configured it will return the result of the callback. |
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302
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* The default implementation will return user IP, user ID and session ID as a prefix. |
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303
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* @param array $message the message being exported. |
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304
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* The message structure follows that in {@see Logger::$messages}. |
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305
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* @return string the prefix string |
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306
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*/ |
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307
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2 |
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protected function getMessagePrefix(array $message): string |
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308
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{ |
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309
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2 |
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if ($this->prefix !== null) { |
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310
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return ($this->prefix)($message); |
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311
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} |
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312
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313
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2 |
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return ''; |
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314
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} |
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315
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|
|
|
316
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|
|
/** |
|
317
|
|
|
* Returns formatted timestamp for message, according to {@see Target::$timestampFormat} |
|
318
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|
|
* @param float|int $timestamp |
|
319
|
|
|
* @return string |
|
320
|
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|
*/ |
|
321
|
2 |
|
protected function getTime($timestamp): string |
|
322
|
|
|
{ |
|
323
|
2 |
|
$timestamp = (string) $timestamp; |
|
324
|
2 |
|
$format = strpos($timestamp, '.') === false ? 'U' : 'U.u'; |
|
325
|
2 |
|
return DateTime::createFromFormat($format, $timestamp)->format($this->timestampFormat); |
|
326
|
|
|
} |
|
327
|
|
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|
|
328
|
|
|
/** |
|
329
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|
* Sets a value indicating whether this log target is enabled. |
|
330
|
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|
* @param bool|callable $value a boolean value or a callable to obtain the value from. |
|
331
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|
|
* |
|
332
|
|
|
* A callable may be used to determine whether the log target should be enabled in a dynamic way. |
|
333
|
|
|
* For example, to only enable a log if the current user is logged in you can configure the target |
|
334
|
|
|
* as follows: |
|
335
|
|
|
* |
|
336
|
|
|
* ```php |
|
337
|
|
|
* 'enabled' => function() { |
|
338
|
|
|
* return !Yii::getApp()->user->isGuest; |
|
339
|
|
|
* } |
|
340
|
|
|
* ``` |
|
341
|
|
|
* @return $this |
|
342
|
|
|
*/ |
|
343
|
1 |
|
public function setEnabled($value): self |
|
344
|
|
|
{ |
|
345
|
1 |
|
$this->enabled = $value; |
|
346
|
|
|
|
|
347
|
1 |
|
return $this; |
|
348
|
|
|
} |
|
349
|
|
|
|
|
350
|
|
|
/** |
|
351
|
|
|
* Enables the log target |
|
352
|
|
|
* |
|
353
|
|
|
* @return $this |
|
354
|
|
|
*/ |
|
355
|
1 |
|
public function enable(): self |
|
356
|
|
|
{ |
|
357
|
1 |
|
return $this->setEnabled(true); |
|
358
|
|
|
} |
|
359
|
|
|
|
|
360
|
|
|
/** |
|
361
|
|
|
* Disables the log target |
|
362
|
|
|
* |
|
363
|
|
|
* @return $this |
|
364
|
|
|
*/ |
|
365
|
1 |
|
public function disable(): self |
|
366
|
|
|
{ |
|
367
|
1 |
|
return $this->setEnabled(false); |
|
368
|
|
|
} |
|
369
|
|
|
|
|
370
|
|
|
/** |
|
371
|
|
|
* Check whether the log target is enabled. |
|
372
|
|
|
* @return bool A value indicating whether this log target is enabled. |
|
373
|
|
|
*/ |
|
374
|
21 |
|
public function isEnabled(): bool |
|
375
|
|
|
{ |
|
376
|
21 |
|
if (is_callable($this->enabled)) { |
|
377
|
1 |
|
return ($this->enabled)($this); |
|
378
|
|
|
} |
|
379
|
|
|
|
|
380
|
21 |
|
return $this->enabled; |
|
|
|
|
|
|
381
|
|
|
} |
|
382
|
|
|
|
|
383
|
21 |
|
public function setLogVars(array $logVars): self |
|
384
|
|
|
{ |
|
385
|
21 |
|
$this->logVars = $logVars; |
|
386
|
21 |
|
return $this; |
|
387
|
|
|
} |
|
388
|
|
|
|
|
389
|
|
|
public function getLogVars(): array |
|
390
|
|
|
{ |
|
391
|
|
|
return $this->logVars; |
|
392
|
|
|
} |
|
393
|
|
|
|
|
394
|
2 |
|
public function setTimestampFormat(string $format): self |
|
395
|
|
|
{ |
|
396
|
2 |
|
$this->timestampFormat = $format; |
|
397
|
2 |
|
return $this; |
|
398
|
|
|
} |
|
399
|
|
|
|
|
400
|
|
|
public function getCategories(): array |
|
401
|
|
|
{ |
|
402
|
|
|
return $this->categories; |
|
403
|
|
|
} |
|
404
|
|
|
|
|
405
|
12 |
|
public function setCategories(array $categories): self |
|
406
|
|
|
{ |
|
407
|
12 |
|
$this->categories = $categories; |
|
408
|
12 |
|
return $this; |
|
409
|
|
|
} |
|
410
|
|
|
|
|
411
|
|
|
public function getExcept(): array |
|
412
|
|
|
{ |
|
413
|
|
|
return $this->except; |
|
414
|
|
|
} |
|
415
|
|
|
|
|
416
|
3 |
|
public function setExcept(array $except): self |
|
417
|
|
|
{ |
|
418
|
3 |
|
$this->except = $except; |
|
419
|
3 |
|
return $this; |
|
420
|
|
|
} |
|
421
|
|
|
|
|
422
|
|
|
public function getLevels(): array |
|
423
|
|
|
{ |
|
424
|
|
|
return $this->levels; |
|
425
|
|
|
} |
|
426
|
|
|
|
|
427
|
9 |
|
public function setLevels(array $levels): self |
|
428
|
|
|
{ |
|
429
|
9 |
|
$this->levels = $levels; |
|
430
|
9 |
|
return $this; |
|
431
|
|
|
} |
|
432
|
|
|
|
|
433
|
|
|
public function getPrefix(): ?callable |
|
434
|
|
|
{ |
|
435
|
|
|
return $this->prefix; |
|
436
|
|
|
} |
|
437
|
|
|
|
|
438
|
|
|
public function setPrefix(callable $prefix): self |
|
439
|
|
|
{ |
|
440
|
|
|
$this->prefix = $prefix; |
|
441
|
|
|
return $this; |
|
442
|
|
|
} |
|
443
|
|
|
|
|
444
|
|
|
public function getExportInterval(): int |
|
445
|
|
|
{ |
|
446
|
|
|
return $this->exportInterval; |
|
447
|
|
|
} |
|
448
|
|
|
|
|
449
|
33 |
|
public function setExportInterval(int $exportInterval): self |
|
450
|
|
|
{ |
|
451
|
33 |
|
$this->exportInterval = $exportInterval; |
|
452
|
33 |
|
return $this; |
|
453
|
|
|
} |
|
454
|
|
|
|
|
455
|
19 |
|
public function getMessages(): array |
|
456
|
|
|
{ |
|
457
|
19 |
|
return $this->messages; |
|
458
|
|
|
} |
|
459
|
|
|
|
|
460
|
19 |
|
public function setMessages(array $messages): self |
|
461
|
|
|
{ |
|
462
|
19 |
|
$this->messages = $messages; |
|
463
|
19 |
|
return $this; |
|
464
|
|
|
} |
|
465
|
|
|
} |
|
466
|
|
|
|