Leverage `extensions` in `graph-node` responses

[dotansimha]

This is an open issue to discuss the option to add some metadata in graph-node responses, using the extensions field of GraphQL response.

[dotansimha]

@lutter @azf20 what do you think about this?

We discussed this with several daaps developers, we think maybe the gateway/graph-node can have an option to return execution/cost/indexing information, and we can have an easy API/tooling on The Graph client to use those (for deciding on preferred indexer/source, collecting some metrics, finding performance bottlenecks and so on)

[azf20]

That makes sense to me - @Jannis what do you think?

There is some corresponding work in graph-node, and maybe also in Gateways to support? Of course would also need to decide what metadata is of interest etc.

[ardatan]

This is available via includeHttpDetailsInExtensions flag. @dotansimha

[dotansimha]

Thanks @ardatan ! Closing ;)