Access to Resolver Info in Modus Functions

[danstarns]

Hi team,

I wanted to request the ability to access resolver info within Modus functions, similar to how GraphQL resolvers get an info parameter. Can someone confirm if this is something we could add to Modus?

Use Cases

• Query Optimization: Build database queries based on requested fields
• Authentication: Field-level authorization and access control
• Root-Level Query Building: Optimize joins and prevent N+1 queries
• Plugin Development: Enable Text-to-GraphQL and schema-aware tooling
• Operation Analysis: Access operation type and name for metrics/logging

Implementation Examples

Query Optimization

export function getMovies(info: ResolverInfo): Movie[] {
  const requestedFields = info.fieldNodes[0].selectionSet.selections;
  
  const query = `
    MATCH (m:Movie)
    RETURN m.${requestedFields.map(f => f.name.value).join(', m.')}
  `;
  
  return executeQuery(query);
}

Authentication Patterns

export function getMovies(info: ResolverInfo): Movie[] {
  const operation = info.operation.name;
  const sensitiveFields = findSensitiveFields(info.fieldNodes[0]);
  requirePermissions(sensitiveFields);
  
  const query = buildSecureQuery(requestedFields);
  return executeQuery(query);
}

Text-to-GraphQL Plugins

export function textToQuery(question: string, info: ResolverInfo): QueryResult {
  const schema = info.schema;
  const generatedQuery = llmGenerateQuery(question, schema);
  
  const operationType = info.operation.operation;
  return executeQuery(generatedQuery, operationType);
}

Go Implementation

func FetchMovies(page int, search string, info *ResolverInfo) (string, error) {
    requestedFields := info.FieldNodes[0].SelectionSet.Selections
    
    query := fmt.Sprintf(`{
        movies(func: has(type.Movie), first: 10, offset: %d) {
            %s
        }
    }`, page * 10, buildFieldSelection(requestedFields))
    
    return executeDgraphQuery(query)
}

Tools using Resolve info

There are plenty of tools out there that use the resolve info, here is a list for inspiration:

1. https://github.com/neo4j/graphql
2. https://www.graphql-debugger.com
3. https://www.npmjs.com/package/@opentelemetry/instrumentation-graphql
4. https://github.com/maticzav/graphql-shield
5. https://the-guild.dev/graphql/mesh/v1/auth
6. https://hasura.io/
7. https://www.npmjs.com/package/graphql-depth-limit
8. https://github.com/pa-bru/graphql-cost-analysis
9. ...

[mattjohnsonpint]

Thanks for the request and the use cases! We will discuss internally and get back to you here.