Error Propagation from Subgraphs to Supergraph

[IsabelFreitas-catapult]

I would expect errors from subgraphs to be propagated to the federated server, but this does not seem to be the case.

In my set up all my subgraphs require headers to be provided as part of the request, so I have a middleware function that checks for the presence of the headers and if they are not present it returns an error.

When headers are missing I see a nice error in the subgraph log Error: service missing request headers: X-Customer-Is : or X-SOB : are not provided in the headers. However this is not propagated to the federation graph.

Is there a way of doing this? i.e. intercepting the error from the subgraph and logging it in the federation layer?

[StarpTech]

Hi @IsabelFreitas-catapult we have support for this. Please take a look at https://cosmo-docs.wundergraph.com/router/subgraph-error-propagation and let us know if it solves your issue.