feat(oauth): enhance error handling for authorization URL and credentials retrieval

api/core/plugin/impl/oauth.py

@@ -18,6 +18,7 @@ class OAuthHandler(BasePluginClient):
         redirect_uri: str,
         system_credentials: Mapping[str, Any],
     ) -> PluginOAuthAuthorizationUrlResponse:
+        try:
             response = self._request_with_plugin_daemon_response_stream(
                 "POST",
                 f"plugin/{tenant_id}/dispatch/oauth/get_authorization_url",
@@ -38,6 +39,8 @@ class OAuthHandler(BasePluginClient):
             for resp in response:
                 return resp
             raise ValueError("No response received from plugin daemon for authorization URL request.")
+        except Exception as e:
+            raise ValueError(f"Error getting authorization URL: {e}")
 
     def get_credentials(
         self,
@@ -53,9 +56,10 @@ class OAuthHandler(BasePluginClient):
         Get credentials from the given request.
         """
 
+
+        try:
             # encode request to raw http request
             raw_request_bytes = self._convert_request_to_raw_data(request)
-
             response = self._request_with_plugin_daemon_response_stream(
                 "POST",
                 f"plugin/{tenant_id}/dispatch/oauth/get_credentials",
@@ -78,6 +82,8 @@ class OAuthHandler(BasePluginClient):
             for resp in response:
                 return resp
             raise ValueError("No response received from plugin daemon for authorization URL request.")
+        except Exception as e:
+            raise ValueError(f"Error getting credentials: {e}")
 
     def _convert_request_to_raw_data(self, request: Request) -> bytes:
         """