1. /**
  2. * Strips metadata from log entries for staging environments and applies default values.
  3. *
  4. * @param {object} logEntry - The log entry object.
  5. * @param {string} environment - The current environment ('production', 'staging', etc.).
  6. * @returns {object} - The log entry with metadata stripped and default values applied.
  7. */
  8. function stripMetadataAndApplyDefaults(logEntry, environment) {
  9. if (environment === 'staging') {
  10. // Remove all metadata fields
  11. for (const key in logEntry) {
  12. if (key.startsWith('_')) { // Remove fields starting with underscore (metadata)
  13. delete logEntry[key];
  14. }
  15. }
  17. // Apply default values
  18. logEntry.timestamp = new Date().toISOString(); // Default timestamp
  19. logEntry.userId = 'unknown'; // Default user ID
  20. logEntry.source = 'application'; // Default source
  21. logEntry.level = 'info'; // Default log level
  22. logEntry.message = logEntry.message || 'No message provided'; //Default message
  23. }
  25. return logEntry;
  26. }
  28. // Example Usage (for testing)
  29. // const logEntry = {
  30. // _timestamp: '2024-10-27T10:00:00Z',
  31. // _userId: 'user123',
  32. // _source: 'web',
  33. // _level: 'debug',
  34. // message: 'This is a debug message',
  35. // extraData: {key: 'value'}
  36. // };
  38. // const stagedLogEntry = stripMetadataAndApplyDefaults(logEntry, 'staging');
  39. // console.log(stagedLogEntry);

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