1. const fs = require('fs');
  3. /**
  4. * Configures log file error suppression with manual overrides.
  5. *
  6. * @param {string} logFilePath - The path to the log file.
  7. * @param {Array<string>} ignorePatterns - An array of glob patterns to ignore (e.g., 'error', 'warn').
  8. * @param {Function} overrideFunction - A function that takes the log message and returns whether to log it or not.
  9. */
  10. function configureLogSuppression(logFilePath, ignorePatterns, overrideFunction) {
  11. // Read the existing log file content
  12. fs.readFile(logFilePath, 'utf8', (err, data) => {
  13. if (err) {
  14. console.error(`Error reading log file: ${err}`);
  15. return;
  16. }
  18. const lines = data.split('\n');
  19. const filteredLines = lines.filter(line => {
  20. // Check if the line should be ignored based on the patterns
  21. const shouldIgnore = ignorePatterns.some(pattern => line.includes(pattern));
  23. // Apply manual override
  24. if (overrideFunction && overrideFunction(line)) {
  25. return true; // Log the line if override function returns true
  26. }
  28. return !shouldIgnore; // Log the line if not ignored
  29. });
  31. // Write the filtered lines back to the log file
  32. fs.writeFile(logFilePath, filteredLines.join('\n'), 'utf8', (err) => {
  33. if (err) {
  34. console.error(`Error writing to log file: ${err}`);
  35. } else {
  36. console.log(`Log file ${logFilePath} processed successfully.`);
  37. }
  38. });
  39. });
  40. }
  42. module.exports = configureLogSuppression;

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