// addConnections adds connections fields to the object afterward to prevent from dead loops
func (t types) addConnections(o *graphql.Object, idx resource.Index, r *resource.Resource) {
// Add sub field references
for name, def := range r.Schema().Fields {
if ref, ok := def.Validator.(*schema.Reference); ok {
sr, found := idx.GetResource(ref.Path, nil)
if !found {
log.Panicf("resource reference not found: %s", ref.Path)
}
o.AddFieldConfig(name, &graphql.Field{
Description: def.Description,
Type: t.getObjectType(idx, sr),
Args: getFArgs(def.Params),
Resolve: getSubFieldResolver(name, sr, def),
})
}
}
// Add sub resources
for _, sr := range r.GetResources() {
name := sr.Name()
o.AddFieldConfig(name, &graphql.Field{
Description: fmt.Sprintf("Connection to %s", name),
Type: graphql.NewList(t.getObjectType(idx, sr)),
Args: listArgs,
Resolve: getSubResourceResolver(sr),
})
}
}
// getObjectType returns a graphql object type definition from a REST layer schema
func (t types) getObjectType(idx resource.Index, r *resource.Resource) *graphql.Object {
// Memoize types by their name so we don't create several instance of the same resource
name := r.Name()
o := t[name]
if o == nil {
o = graphql.NewObject(graphql.ObjectConfig{
Name: name,
Description: r.Schema().Description,
Fields: getFields(idx, r.Schema()),
})
t[name] = o
t.addConnections(o, idx, r)
}
return o
}