Fix Azure authentication issues and improve error handling

- Add PYTHONIOENCODING=utf-8 to main.py for Windows subprocess encoding
- Update azure-identity to include broker extras for VS Code auth
- Log failed subscriptions to separate file for better tracking

Author: stefanriegel

azure_discovery/discover.py

@@ -317,6 +317,19 @@ def should_save_checkpoint():
 
     print(f"\nTotal Native Objects found across all subscriptions: " f"{len(all_native_objects)}")
 
+    # Log failed subscriptions to a separate file
+    if errors:
+        timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+        error_file = f"output/azure_failed_subscriptions_{timestamp}.txt"
+        try:
+            os.makedirs("output", exist_ok=True)
+            with open(error_file, 'w') as f:
+                for error in errors:
+                    f.write(error + '\n')
+            print(f"Failed subscriptions logged to: {error_file}")
+        except Exception as e:
+            print(f"Warning: Failed to write error log: {e}")
+
     # Create a dummy discovery for counting and saving
     config = AzureConfig(
         regions=all_regions,

azure_discovery/requirements.txt

@@ -4,6 +4,6 @@ azure-mgmt-resource>=23.0.0
 azure-mgmt-dns>=8.0.0
 azure-mgmt-privatedns>=1.0.0
 azure-mgmt-subscription>=3.0.0
-azure-identity>=1.12.0
+azure-identity[broker]>=1.12.0
 tqdm>=4.64.0
 pandas>=1.5.0 

main.py

@@ -13,6 +13,9 @@
 # Add current directory to path for imports
 sys.path.insert(0, str(Path(__file__).parent))
 
+# Set UTF-8 encoding for subprocess calls (fixes Windows encoding issues)
+os.environ['PYTHONIOENCODING'] = 'utf-8'
+
 
 def _print_kv(key: str, value: str) -> None:
     print(f"  {key}: {value}")