1. from typing import Dict, Any
  2. import re
  4. def initialize_diag_params(params: Dict[str, Any]) -> Dict[str, Any]:
  5. """
  6. Initializes URL parameters for diagnostics with basic input validation.
  8. Args:
  9. params: A dictionary of URL parameters.
  11. Returns:
  12. A dictionary of initialized URL parameters.
  13. """
  15. initialized_params = {}
  17. # Example: 'user_id' - integer validation
  18. user_id = params.get("user_id")
  19. if user_id is not None:
  20. try:
  21. initialized_params["user_id"] = int(user_id)
  22. except ValueError:
  23. initialized_params["user_id"] = None # Or a default value
  25. # Example: 'session_id' - alphanumeric validation
  26. session_id = params.get("session_id")
  27. if session_id is not None:
  28. if not re.match("^[a-zA-Z0-9]+$", session_id):
  29. initialized_params["session_id"] = None # Or a default value
  30. else:
  31. initialized_params["session_id"] = session_id
  33. # Example: 'timestamp' - check if it's a valid datetime string
  34. timestamp = params.get("timestamp")
  35. if timestamp is not None:
  36. try:
  37. initialized_params["timestamp"] = datetime.fromisoformat(timestamp) # Requires import datetime
  38. except ValueError:
  39. initialized_params["timestamp"] = None # Or a default value
  41. # Example: 'event_type' - allow a limited set of values
  42. event_type = params.get("event_type")
  43. if event_type is not None:
  44. allowed_types = ["page_view", "button_click", "form_submit"]
  45. if event_type not in allowed_types:
  46. initialized_params["event_type"] = None # Or a default value
  47. else:
  48. initialized_params["event_type"] = event_type
  50. return initialized_params
  52. import datetime #Needed for timestamp validation example

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