Fix IBM Schematics API compatibility issue (#1006)

* Fix IBM Schematics API compatibility issue
The list_locations() method was removed from IBM Schematics SDK.
Replace dynamic location discovery with hardcoded known IBM Cloud regions.
Fixes AttributeError: 'SchematicsV1' object has no attribute 'list_locations'

* Improve error handling for Schematics region failures

- Track failed regions instead of silently ignoring all errors
- Raise RuntimeError if ALL regions fail (prevents silent failures)
- Include detailed error messages for debugging
- Addresses CodeRabbit review feedback

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: pragya811

cloud_governance/common/clouds/ibm/developer_tools/schematic_operations.py

@@ -34,22 +34,43 @@ def get_workspaces(self):
     def get_supported_locations(self):
         """
         This method lists supported locations
+        DEPRECATED: list_locations() was removed from IBM Schematics SDK
         :return:
         """
-        response = self.__client.list_locations().get_result()
-        return response['locations']
+        # Method no longer available in IBM Schematics SDK
+        # Use known regions in get_all_workspaces() instead
+        raise NotImplementedError("list_locations() is no longer available in IBM Schematics SDK")
 
     def get_all_workspaces(self):
         """
         This method lists all available schematics workspaces
         :return:
+        :raises: RuntimeError if unable to query any region
         """
-        locations = self.get_supported_locations()
+        # list_locations() was removed from IBM Schematics SDK
+        # Use known IBM Cloud regions instead
+        known_regions = ['us-south', 'us-east', 'eu-de', 'eu-gb']
         resources_list = {}
-        for location in locations:
-            region = location['region']
-            geography_code = location['geography_code']
-            self.set_service_url(region)
-            if geography_code not in resources_list:
-                resources_list[geography_code] = self.get_workspaces()
+        failed_regions = []
+
+        for region in known_regions:
+            try:
+                self.set_service_url(region)
+                workspaces = self.get_workspaces()
+                if workspaces:
+                    resources_list[region] = workspaces
+            except Exception as exc:
+                # Track failed regions for debugging
+                failed_regions.append((region, str(exc)))
+                continue
+
+        # If all regions failed, raise error instead of returning empty dict
+        if not resources_list and len(failed_regions) == len(known_regions):
+            failed_details = '; '.join(f"{region}: {error}" for region, error in failed_regions)
+            raise RuntimeError(
+                f"Unable to list Schematics workspaces in any region. "
+                f"All {len(known_regions)} regions failed. "
+                f"Check credentials and permissions. Details: {failed_details}"
+            )
+
         return resources_list