reimport: support pro hash method (#13680)

Co-authored-by: Valentijn Scholten <[email protected]>

Author: valentijnscholten

dojo/importers/default_reimporter.py

@@ -772,4 +772,6 @@ def calculate_unsaved_finding_hash_code(
         self,
         unsaved_finding: Finding,
     ) -> str:
+        # this is overridden in Pro, but will still call this via super()
+        deduplicationLogger.debug("Calculating hash code for unsaved finding")
         return unsaved_finding.compute_hash_code()

dojo/models.py

@@ -2908,6 +2908,11 @@ def risk_acceptance(self):
         return None
 
     def compute_hash_code(self):
+        # Allow Pro to overwrite compute hash_code which gets dedupe settings from a database instead of django.settings
+        from dojo.utils import get_custom_method  # noqa: PLC0415 circular import
+        if compute_hash_code_method := get_custom_method("FINDING_COMPUTE_HASH_METHOD"):
+            deduplicationLogger.debug("using custom compute_hash_code method")
+            return compute_hash_code_method(self)
 
         # Check if all needed settings are defined
         if not hasattr(settings, "HASHCODE_FIELDS_PER_SCANNER") or not hasattr(settings, "HASHCODE_ALLOWS_NULL_CWE") or not hasattr(settings, "HASHCODE_ALLOWED_FIELDS"):