Handle exceptions better

packages/sshecret-admin/src/sshecret_admin/services/admin_backend.py

@@ -17,7 +17,11 @@ from sshecret.backend import (
     Operation,
     SubSystem,
 )
-from sshecret.backend.exceptions import BackendError, BackendValidationError
+from sshecret.backend.exceptions import (
+    BackendError,
+    BackendValidationError,
+    HttpErrorItem,
+)
 from sshecret.backend.identifiers import KeySpec
 from sshecret.backend.models import (
     ClientQueryResult,
@@ -30,6 +34,7 @@ from sshecret.crypto import encrypt_string, load_public_key
 
 from .secret_manager import (
     AsyncSecretContext,
+    InvalidSecretNameError,
     SecretUpdateParams,
     password_manager_context,
 )
@@ -603,7 +608,7 @@ class AdminBackend:
             client = await self.get_client(client_id)
             if not client:
                 if update:
-                    raise ClientNotFoundError()
+                    raise ClientNotFoundError(f"Client {client_name} not found")
                 LOG.warning("Requested client %s not found!", client_name)
                 continue
             public_key = load_public_key(client.public_key.encode())
@@ -628,10 +633,17 @@ class AdminBackend:
                 group=group,
                 distinguisher=distinguisher,
             )
-        except ClientManagementError:
+        except InvalidSecretNameError as e:
-            raise
+            field_error = self.create_field_error("name", str(e))
+            error = self.create_validation_error(field_error)
+            raise error from e
+
+        except ClientNotFoundError as e:
+            field_error = self.create_field_error("clients", str(e))
+            error = self.create_validation_error(field_error)
+            raise error from e
         except Exception as e:
-            raise BackendUnavailableError() from e
+            raise ClientManagementError(e)
 
     async def update_secret(self, name: str, value: str) -> None:
         """Update secrets."""
@@ -748,3 +760,16 @@ class AdminBackend:
     async def get_audit_log_count(self) -> int:
         """Get audit log count."""
         return await self.audit.count()
+
+    def create_field_error(self, field: str, error_message: str) -> HttpErrorItem:
+        """Create a field error."""
+        field_error: HttpErrorItem = {
+            "loc": ["body", field],
+            "msg": error_message,
+            "type": "None",
+        }
+        return field_error
+
+    def create_validation_error(self, *errors: HttpErrorItem) -> BackendValidationError:
+        """Create a custom backend validation error."""
+        return BackendValidationError(errors=list(errors))