1. import java.time.LocalDate;
  2. import java.time.format.DateTimeFormatter;
  3. import java.util.Map;
  5. public class DryRunDateBootstrapper {
  7. /**
  8. * Bootsmaps scripts with date values for dry-run scenarios, supporting older Java versions.
  9. *
  10. * @param scripts A map where keys are script names and values are script content strings.
  11. * @param dateValues A map where keys are script names and values are date strings (e.g., "YYYY-MM-DD").
  12. * @param formatter The DateTimeFormatter to use for parsing date strings.
  13. * @return A map of script names to their bootstrapped content.
  14. */
  15. public static Map<String, String> bootstrapScripts(Map<String, String> scripts, Map<String, String> dateValues, DateTimeFormatter formatter) {
  16. Map<String, String> bootstrappedScripts = new java.util.HashMap<>();
  18. for (Map.Entry<String, String> entry : scripts.entrySet()) {
  19. String scriptName = entry.getKey();
  20. String scriptContent = entry.getValue();
  22. String dateString = dateValues.get(scriptName);
  24. if (dateString != null) {
  25. try {
  26. LocalDate date = LocalDate.parse(dateString, formatter);
  27. // Replace date placeholders in the script content. Example: "System.out.println(date);"
  28. scriptContent = scriptContent.replace("{{date}}", date.toString());
  29. } catch (Exception e) {
  30. System.err.println("Error parsing date for script " + scriptName + ": " + dateString + ". Using original script.");
  31. // Handle the error gracefully, e.g., log it or use a default date.
  32. }
  33. }
  34. bootstrappedScripts.put(scriptName, scriptContent);
  35. }
  37. return bootstrappedScripts;
  38. }
  40. public static void main(String[] args) {
  41. //Example Usage
  42. Map<String, String> scripts = new java.util.HashMap<>();
  43. scripts.put("script1", "System.out.println(Today's date: {{date}})");
  44. scripts.put("script2", "System.out.println(\"Script 2 run on:\", {{date}})");
  46. Map<String, String> dateValues = new java.util.HashMap<>();
  47. dateValues.put("script1", "2024-01-15");
  48. dateValues.put("script2", "2024-02-28");
  50. DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
  52. Map<String, String> bootstrapped = bootstrapScripts(scripts, dateValues, formatter);
  54. for(Map.Entry<String, String> entry : bootstrapped.entrySet()) {
  55. System.out.println(entry.getKey() + ": " + entry.getValue());
  56. }
  57. }
  58. }

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