How to use Hyperf framework for logging

How to use the Hyperf framework for logging

Introduction:
In software development, logging is a very important function, which can help developers track errors, analyze problems, and monitor system health. When developing using the Hyperf framework, we can use its built-in logging component to implement flexible logging functions. This article explains how to use the Hyperf framework for logging and provides detailed code examples.

1. Configure the log component
In the Hyperf framework, we can configure the log component in the configuration file config/autoload/logger.php. The following is a simple reference example:

return [
    'default' => [
        'handlers' => [
            [
                'class' => MonologHandlerStreamHandler::class,
                'constructor' => [
                    'stream' => BASE_PATH . '/runtime/logs/hyperf.log',
                    'level' => MonologLogger::DEBUG,
                ],
            ],
        ],
    ]
];

In the above example, we use a StreamHandler to record logs, and the logs will be written to /runtime/logs/hyperf. log file. For more configuration information about the log processor, please refer to the documentation of the Monolog component.

2. Use the log component
In the code, we can obtain the log component instance through the container object $container, and use the methods it provides for logging.

1. Record general information
   We can use the info() method to record general information, such as system status, operation records, etc. The following is an example:

   $logger = $container->get(PsrLogLoggerInterface::class);
   $logger->info('系统启动成功');

2. Record warning information
   When encountering some warning information that requires developer attention, we can use the warning() method Record. The following is an example:

   $logger = $container->get(PsrLogLoggerInterface::class);
   $logger->warning('数据库连接失败');

3. Record error information
   When an error occurs in the application, we can use the error() method to record the error information and Pass in the exception object as additional information. The following is an example:

   try {
    // Some code that may throw an exception
   } catch (Exception $e) {
    $logger = $container->get(PsrLogLoggerInterface::class);
    $logger->error('发生异常', ['exception' => $e]);
   }

3. Using contextual information
Sometimes, we need to attach some contextual information when recording logs, such as the requested URL, Session information, etc. The Hyperf framework provides the Logger::pushProcessor() method to implement this function. The following is an example:

$container->get(PsrLogLoggerInterface::class)->pushProcessor(function ($record) {
    $record['extra']['url'] = $_SERVER['REQUEST_URI'];
    $record['extra']['sessionId'] = session_id();
    return $record;
});

$logger->info('请求完成');

In the above example, we added two contextual information, request URL and Session ID, to the log record.

Conclusion:
This article introduces how to use the Hyperf framework for logging and provides specific code examples. Through reasonable configuration and use, we can give full play to the functions of the built-in log component of the Hyperf framework and achieve flexible and efficient logging. I hope this article can be helpful to developers of the Hyperf framework.

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