1. import java.util.HashMap;
  2. import java.util.Map;
  4. public class HeaderValidator {
  6. /**
  7. * Validates request headers for data migration.
  8. *
  9. * @param headers A map of request headers.
  10. * @return true if all conditions are met, false otherwise.
  11. */
  12. public static boolean validateHeaders(Map<String, String> headers) {
  14. // Check if 'Content-Type' header is present and is 'application/json'
  15. if (!headers.containsKey("Content-Type") || !headers.get("Content-Type").equalsIgnoreCase("application/json")) {
  16. System.err.println("Invalid Content-Type: Expected application/json");
  17. return false;
  18. }
  20. // Check if 'Authorization' header is present
  21. if (!headers.containsKey("Authorization")) {
  22. System.err.println("Missing Authorization header");
  23. return false;
  24. }
  26. // Check if 'Migration-Type' header is present and is 'full' or 'incremental'
  27. if (!headers.containsKey("Migration-Type") ||
  28. !"full".equalsIgnoreCase(headers.get("Migration-Type")) &&
  29. !"incremental".equalsIgnoreCase(headers.get("Migration-Type"))) {
  30. System.err.println("Invalid Migration-Type: Expected full or incremental");
  31. return false;
  32. }
  34. // Check if 'Source-System' header is present
  35. if (!headers.containsKey("Source-System")) {
  36. System.err.println("Missing Source-System header");
  37. return false;
  38. }
  40. // Check if 'Destination-System' header is present
  41. if (!headers.containsKey("Destination-System")) {
  42. System.err.println("Missing Destination-System header");
  43. return false;
  44. }
  48. return true; // All conditions met
  49. }
  51. public static void main(String[] args) {
  52. // Example Usage
  53. Map<String, String> validHeaders = new HashMap<>();
  54. validHeaders.put("Content-Type", "application/json");
  55. validHeaders.put("Authorization", "Bearer <token>");
  56. validHeaders.put("Migration-Type", "full");
  57. validHeaders.put("Source-System", "SystemA");
  58. validHeaders.put("Destination-System", "SystemB");
  60. Map<String, String> invalidHeaders = new HashMap<>();
  61. invalidHeaders.put("Content-Type", "text/plain");
  62. invalidHeaders.put("Authorization", "Bearer <token>");
  63. invalidHeaders.put("Migration-Type", "partial");
  66. System.out.println("Valid Headers: " + validateHeaders(validHeaders));
  67. System.out.println("Invalid Headers: " + validateHeaders(invalidHeaders));
  68. }
  69. }

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