Troubleshoot @custom Directive

Users Dgraph Cloud
1

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What I want to do

Query External rest endpoint.
I want to access external service by rest endpoint. But I don’t get any response, Error, Can’t access log’s. How can I debug this query.

What I did

Schema:

type Directions @remote{
   bbox: [Float],
   metadata: DirectionsMetadata
}

    type DirectionsMetadata @remote{
      attribution:String,
      service: String,
      timestamp: Int64,
      engine: RouterEngine,
      profile:String,
      format:String,

 
    }
    type RouterEngine @remote{
      version: String,
      build_date: DateTime,
      graph_date: DateTime
    }
    
type Query{
  getDirections(type:String!="driving-car"): Directions @custom(
    http: {
        url: "https://api.openrouteservice.org/v2/directions/driving-car",
        method: POST,
        introspectionHeaders: ["Route-Token"],
        secretHeaders: ["Authorization:Route-Token"],
        body: "{coordinates:[[8.681495,49.41461],[8.686507,49.41943],[8.687872,49.420318]]}",
        
    }
  )
}

Query:

query MyQuery {
  getDirections(type: "driving-car") {
    bbox
    metadata {
      attribution
      format
      profile
      service
      timestamp
    }
  }
}

Response:

{
  "data": {
    "getDirections": null
  },
  "extensions": {
    "tracing": {
      "version": 1,
      "startTime": "2022-09-26T18:04:10.629152407Z",
      "endTime": "2022-09-26T18:04:10.641457794Z",
      "duration": 12305403
    }
  }
}

Dgraph metadata

Current version

2

How to Handle nested lists in @custom queries.

type DirectionsQuery @remote{
  profile: String,
  format: String,
  coordinates: [[Float!]!]!
}

My api provide nested array as response.
Is it possible to handle it ?

3

If it is not part of GraphQL Spec, it is impossible. Need other way around.