Is is possible to use introspection in the API? In hasura documentation (and SO) I see it should pos...

Tomer Cagan

03/08/2022, 9:38 AM

Is is possible to use introspection in the API? In hasura documentation (and SO) I see it should possible but for whatever introspection query I try to use, I am getting an error (details inside)

discourse 1

Tomer Cagan

03/08/2022, 9:40 AM

An example from hasura introspection docs:

Copy code

{
  __schema {
    queryType {
      fields {
        name
        description
      }
    }
  }
}

Returns

Copy code

{
  "errors": [
    {
      "message": "Unknown argument \"limit\" on field \"__schema\" of type \"Query\".",
      "locations": [
        {
          "line": 2,
          "column": 12
        }
      ],
      "extensions": {
        "code": "GRAPHQL_VALIDATION_FAILED"
      }
    }
  ]
}

I am getting this for every introspection query I am trying to run

Tomer Cagan

03/08/2022, 9:41 AM

Maybe introspection is disabled? I am trying to explore the API - e.g. get object names, fields, etc... Maybe there's another way to do it (documented somewhere?)

Sylvain Hazard

03/08/2022, 9:48 AM

This only partially answers your question but there is a GraphQL playground UI made available by the Apollo container (if running on docker), I believe the default port is 4200. This UI includes access to a searchable doc with schemas and mutations.

🙌 2

Tomer Cagan

03/08/2022, 9:59 AM

I am using the graphql playground to run the query and getting that error. I haven't noticed the searchable docs - thanks for that! Still - I am wondering why the introspection query fails...

Sylvain Hazard

03/08/2022, 10:01 AM

Yeah those tabs for the docs and schemas are a bit hard to notice. Unfortunately can't help you with the introspection query, haven't tried those myself.

Kevin Kho

03/08/2022, 2:23 PM

I need to ask the team to be sure about this

Kevin Kho

03/08/2022, 2:48 PM

So we don’t block it but you can’t do it with _the interactive api_; the interactive api automatically adds limits and offsets to queries except those we’ve explicitly exempted and the various introspection queries aren’t ones we’ve added

Tomer Cagan

03/09/2022, 8:24 AM

OK. That explains it 🙂

37 Views

Open in Slack

Previous Next

Prefect Community

Bring your towel and join one of the fastest growing data communities. Welcome to our second-generation open source orchestration platform, a completely rethought approach to dataflow automation.