[FEATURE] Implement daemon to monitor and process `error_log` files from CPanel API

[guibranco]

Description

We need a service/daemon that runs every 5 minutes to query the CPanel API for error_log files. When these files are found, the service should rename, process, and delete them. The parsed error messages should then be inserted into a MariaDB/MySQL table named errors for persistence.

Problem Statement

• Current Issue: There is no automated mechanism to handle and process error_log files from CPanel, which results in missed or unmanaged error logs.
• Impact: Implementing this feature will ensure that error logs are consistently monitored, processed, and stored in a database, facilitating better error management and reporting.

Proposed Solution

• Service/Daemon Functionality:

  • The service should run as a background task every 5 minutes.
  • It should connect to the CPanel API to query for available error_log files.
  • For each file found:
  • Rename the file to prevent reprocessing.
  • Process the file by parsing its contents.
  • Insert parsed error messages into the errors table in MariaDB/MySQL.
  • Delete the processed file to clean up.

• Database Interaction:

  • Use a MariaDB/MySQL database to store the parsed error messages.
  • Create a table named errors with appropriate fields for storing error details.

Implementation Steps

1. Set Up the Daemon:

   • Implement a PHP script that runs as a daemon or scheduled task every 5 minutes.
   • Use a cron job or a similar scheduling mechanism to ensure the script executes periodically.

2. Connect to CPanel API:

   • Develop PHP code to connect to the CPanel API and query for error_log files.

   $cpanelApiUrl = 'https://your-cpanel-server:2083/execute/Fileman/get_file_list';
   $apiToken = 'your-cpanel-api-token';
   
   $options = [
      'http' => [
          'header' => "Authorization: cpanel your-cpanel-username:$apiToken\r\n",
          'method' => 'GET',
      ],
   ];
   $context = stream_context_create($options);
   $response = file_get_contents($cpanelApiUrl, false, $context);
   $files = json_decode($response, true);

3. Process error_log Files:

   • Rename each error_log file to a unique name.
   • Read and parse the file contents.
   • Insert parsed data into the errors table in MariaDB/MySQL.

   $db = new mysqli('hostname', 'username', 'password', 'database');
   
   foreach ($files as $file) {
      $filePath = $file['path'];
      $newFileName = $filePath . '_processed';
      rename($filePath, $newFileName);
   
      $contents = file_get_contents($newFileName);
      // Parse the contents
      $errors = parseErrors($contents);
   
      foreach ($errors as $error) {
          $stmt = $db->prepare('INSERT INTO errors (error_message) VALUES (?)');
          $stmt->bind_param('s', $error);
          $stmt->execute();
      }
   
      unlink($newFileName); // Delete the processed file
   }
   
   function parseErrors($contents) {
      // Implement error parsing logic
      return explode("\n", $contents); // Example logic
   }

4. Database Table:

   • Create the errors table in MariaDB/MySQL with appropriate fields.

   CREATE TABLE errors (
      id INT AUTO_INCREMENT PRIMARY KEY,
      error_message TEXT NOT NULL,
      created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
   );

5. Testing and Validation:

   • Test the script to ensure it correctly processes and stores error logs.
   • Validate that error messages are accurately inserted into the database.

6. Documentation and Deployment:

   • Document the setup and configuration process for the daemon.
   • Ensure sensitive information (e.g., API tokens) is handled securely.

Additional Notes

• Security: Ensure API tokens and database credentials are stored securely and not exposed in public repositories.
• Integration: Verify that the daemon integrates seamlessly with existing systems and does not interfere with other operations.

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