fleshing out spoke API

capsulflask/spoke_model.py

@@ -156,12 +156,18 @@ class ShellScriptSpoke(SpokeInterface):
         {completedProcess.stderr}
       """)
 
-  def destroy(self, email: str, id: str) -> str:
+  def destroy(self, email: str, id: str):
     validate_capsul_id(id)
     completedProcess = run([join(current_app.root_path, 'shell_scripts/destroy.sh'), id], capture_output=True)
     self.validate_completed_process(completedProcess, email)
     lines = completedProcess.stdout.splitlines()
     status = lines[len(lines)-1].decode("utf-8")
-    return status
+    if not status == "success":
+      raise ValueError(f"""failed to destroy vm {id} for {email} on {current_app.config["SPOKE_HOST_ID"]}:
+        stdout:
+        {completedProcess.stdout}
+        stderr:
+        {completedProcess.stderr}
+      """)