Refactor: pylint rrequires more complexity.

ospd_openvas/preferencehandler.py

@@ -577,6 +577,11 @@ def prepare_scan_params_for_openvas(self, ospd_params: Dict[str, Dict]):
         if prefs_val:
             self.kbdb.add_scan_preferences(self.scan_id, prefs_val)
 
+    def disable_message(self, disabled: str) -> str:
+        """Return a string with the message for exclusive services."""
+        disabled = "Disabled {}".format(disabled) 
+        return disabled + ": KRB5 and SMB credentials are mutually exclusive."
+
     def build_credentials_as_prefs(self, credentials: Dict) -> List[str]:
         """Parse the credential dictionary.
         Arguments:
@@ -586,6 +591,7 @@ def build_credentials_as_prefs(self, credentials: Dict) -> List[str]:
             A list with the credentials in string format to be
             added to the redis KB.
         """
+
         cred_prefs_list = []
         krb5_set = False
         smb_set = False
@@ -669,7 +675,7 @@ def build_credentials_as_prefs(self, credentials: Dict) -> List[str]:
             elif service == 'smb':
                 if krb5_set:
                     self.errors.append(
-                        "Disabled SMB: Kerberos and SMB credentials are mutually exclusive."
+                        self.disable_message("SMB")
                     )
                     continue
                 smb_set = True
@@ -682,7 +688,7 @@ def build_credentials_as_prefs(self, credentials: Dict) -> List[str]:
             elif service == 'krb5':
                 if smb_set:
                     self.errors.append(
-                        "Disabled KRB5: Kerberos and SMB credentials are mutually exclusive."
+                        self.disable_message("KRB5")
                     )
                     continue
                 krb5_set = True