What is the best way to pass variables between query and response object field resolver?

Question

I need sync way for passing variables between query and response object field resolver. I know about OperationContext, but it is basic map, so I have some concurrent problems.

tmp := "Hello world"
graphql.GetOperationContext(ctx).Variables["HelloWorld"] = &tmp
tmp2 := graphql.GetOperationContext(ctx).Variables["HelloWorld"].(*string)

For example my schema

Object {
  ID: ID!
  isOK: Boolean! @goField(forceResolver: true)
}

type Query {
  Objects: [Object!]
}

Answer 1

The query resolver should run to completion before any field resolver runs. You can attach whatever field(s) you want to the results of the query resolver. These will be available in the parent variable of the field resolvers. The extra fields that you add will eventually get stripped out of the final result that is returned to the client.