1. import java.util.HashMap;
  2. import java.util.Map;
  3. import java.util.concurrent.Executors;
  4. import java.util.concurrent.ScheduledExecutorService;
  5. import java.util.concurrent.TimeUnit;
  7. public class CookieWrapper {
  9. private final CookieService cookieService; // Interface for cookie management
  10. private final int maxRetries;
  11. private final long retryDelayMillis;
  12. private final ScheduledExecutorService scheduler;
  13. private final Map<String, String> cache = new HashMap<>(); //Simple cache for demonstration
  15. public CookieWrapper(CookieService cookieService, int maxRetries, long retryDelayMillis) {
  16. this.cookieService = cookieService;
  17. this.maxRetries = maxRetries;
  18. this.retryDelayMillis = retryDelayMillis;
  19. this.scheduler = Executors.newSingleThreadScheduledExecutor();
  20. }
  24. public String getCookie(String name) {
  25. int retries = 0;
  26. while (retries <= maxRetries) {
  27. try {
  28. String cookieValue = cookieService.getCookie(name); // Call the original cookie logic
  29. if (cookieValue != null) {
  30. return cookieValue;
  31. } else {
  32. retries++;
  33. if (retries <= maxRetries) {
  34. try {
  35. Thread.sleep(retryDelayMillis); // Wait before retrying
  36. } catch (InterruptedException e) {
  37. Thread.currentThread().interrupt();
  38. return null; //Or handle the interruption appropriately
  39. }
  40. }
  41. }
  42. } catch (Exception e) {
  43. retries++;
  44. if (retries <= maxRetries) {
  45. try {
  46. Thread.sleep(retryDelayMillis);
  47. } catch (InterruptedException ie) {
  48. Thread.currentThread().interrupt();
  49. return null; //Or handle the interruption appropriately
  50. }
  51. }
  52. //Log the exception here. Important for debugging.
  53. //System.err.println("Error getting cookie: " + e.getMessage());
  54. return null; //Or handle the exception appropriately
  55. }
  56. }
  57. return null; // Return null if all retries fail
  58. }
  60. public void setCookie(String name, String value) {
  61. int retries = 0;
  62. while (retries <= maxRetries) {
  63. try {
  64. cookieService.setCookie(name, value); // Call the original cookie logic
  65. return; // Success, exit the loop
  66. } catch (Exception e) {
  67. retries++;
  68. if (retries <= maxRetries) {
  69. try {
  70. Thread.sleep(retryDelayMillis);
  71. } catch (InterruptedException ie) {
  72. Thread.currentThread().interrupt();
  73. return; //Exit the loop on interruption
  74. }
  75. }
  76. //Log the exception here. Important for debugging.
  77. //System.err.println("Error setting cookie: " + e.getMessage());
  78. }
  80. }
  81. //If all retries fail, handle the error appropriately (e.g., log, throw exception)
  82. //System.err.println("Failed to set cookie after multiple retries.");
  83. }
  87. public void startRetryScheduler() {
  88. scheduler.scheduleAtFixedRate(() -> {
  89. //Example: Periodically refresh cookies (can be customized)
  90. System.out.println("Refreshing cookies...");
  91. for (Map.Entry<String, String> entry : cache.entrySet()) {
  92. setCookie(entry.getKey(), entry.getValue());
  93. }
  94. }, 60, 60, TimeUnit.SECONDS); //Refresh every minute
  95. }
  97. public void stopRetryScheduler() {
  98. scheduler.shutdown();
  99. try {
  100. scheduler.awaitTermination(5, TimeUnit.SECONDS);
  101. } catch (InterruptedException e) {
  102. Thread.currentThread().interrupt();
  103. }
  104. }
  106. //Simple interface for cookie service. Replace with your actual implementation.
  107. interface CookieService {
  108. String getCookie(String name);
  109. void setCookie(String name, String value);
  110. }
  113. public static void main(String[] args) {
  114. //Example Usage
  115. CookieWrapper wrapper = new CookieWrapper(new SimpleCookieService(), 3, 1000);
  116. wrapper.startRetryScheduler();
  118. String cookieValue = wrapper.getCookie("myCookie");
  119. System.out.println("Cookie value: " + cookieValue);
  121. wrapper.setCookie("myCookie", "new

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