Add additionalResolvers example for passing args to nested fields

[rboyd]

I am trying to use it to wrap a remote schema in a container running https://github.com/graphql-compose/graphql-compose-elasticsearch (graphql queries to elasticsearch).

For my case I need to restrict the indices that a client can query. I'm stuck on how to use additionalResolvers to pass args to a nested field.

Here's a query example against target: https://imgur.com/a/tDVT8bC and my attempt so far: https://gist.github.com/rboyd/f67d5efc03221bb936926fdc0d33201f (line 6 where I try elastic.api.elastic.search) I'm not sure where to find docs or impl of what the api function expects for args.

[ardatan]

@rboyd Could you create a minimal reproduction so we can work on it and make sure it works before asking you to test it ? :)

[fredericomba]

@rboyd, I've taken a look at your JavaScript snippet, and there is a problem with it. It has syntax errors. I've written a version of your script that does not have syntax errors and runs fine on Node.js, and you can see the attached screenshots for clarification.

RUNNING ORIGINAL CODE: https://ibb.co/t3Cxk3n
RUNNING MODIFIED CODE: https://ibb.co/0Chf97c

Here is the modified code:

const resolvers = {
  Query: {
    restrictedSearch: async (root, args, { elastic }) => {

      const { results } = await elastic.api.elastic.search({
        index: args.index,
        q: args.q,
      });

      return results;

    },
  },
};

module.exports = { resolvers };

[rboyd]

@Frederico-Miranda thank you -- with a graphql query:

query MySearch {
  restrictedSearch(q: "test", index:"none") 
}

I get:

  "errors": [
    {
      "message": "elastic.api.elastic.search is not a function",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "restrictedSearch"
      ]
    }
  ],
  "data": {
    "restrictedSearch": null
  }
}

here is my .meshrc.yaml:

sources:
  - name: elastic
    handler:
      graphql:
        endpoint: http://localhost:9494/
additionalTypeDefs: |
  extend type Query {
    restrictedSearch(index: String!, q: String!): JSON
  }
additionalResolvers:
  - ./src/mesh/additional-resolvers.js

I'm using docker image https://hub.docker.com/r/mewil/elastic-graphql

partial docker-compose:

  search:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.8.0
    environment:
    - discovery.type=single-node
    - "ES_JAVA_OPTS=-Xms750m -Xmx750m"
    ports:
    - "9200:9200"
    - "9300:9300"
  elastic-graphql:
    image: mewil/elastic-graphql:latest@sha256:c44f7f1b2633a69f4afc945246808d85495ae9c2b9b7f3df1c03f30c6ccbbfad
    environment:
    - ELASTIC_GRAPHQL_HOST=search:9200
    - ELASTIC_GRAPHQL_VERSION=7.x
    ports:
    - "9494:9494"
    links:
    - search
  graphql-mesh:
    image: rboyd/graphql-mesh
    links:
    - elastic-graphql
    volumes:
    - ./graphql-mesh/.meshrc.yaml:/work/.meshrc.yaml
    ports:
    - 4000:4000

[ardatan]

@rboyd Could you create a repo?