Composing multiple subgraphs with Subscriptions

[robotoer]

Hi!

I have several graphql subgraphs that I'd like to compose into a single supergraph. All of these subgraphs currently define several subscriptions in a root-level Subscription type. When I try to compose these using graphql-mesh, I get the following error: Fields on root level subscription object cannot be marked as shareable. When I try to filter out either the root Subscription type and/or all the fields contained within, the same error occurs. When I try to prefix all fields using a transform the same error shows up. I don't need/use any of the subscriptions in the subgraphs being composed. What's the correct way to compose multiple subgraphs with subscriptions defined?

Thanks!

[ardatan]

Do you have a field with the same name on Subscription type in different subgraphs?

[robotoer]

Thanks for the response!

Yes, there is one shared field across all of these subgraphs in the Subscription type named _meta. There are also other fields that have non-overlapping names

[robotoer]

Just to add some more information: I have tried to filter out the _meta field in the Subscription type and this still produces the same error. When investigating the generated supergraph schema, it seems that even when filtering out these fields, they still are present in the resulting schema (while marked with additional decorators) presumably causing this error to still occur.

[robotoer]

Bumping this question about how to handle composition of subgraphs with overlapping field names