I use an SDL schema and I try to use hydrate to add resolver functions to my queries, mutations and
subscriptions. Queries and mutations work fine, but for some reasons subscriptions do not.

This is how my resolve function looks like:

def hydrate(%Absinthe.Blueprint{}, _) do
  %{
    mutation: [%{my_mutation: [resolve: &SomeModule.resolve_my_mutation/3]}],
    query: [%{my_query: [resolve: &SomeModule.resolve_my_query/3]}],
    subscription: [%{my_subscription: [resolve: &SomeModule.resolve_my_subscription/3]}]
  }
end

The resolve_my_mutation/3 and resolve_my_query/3 is called when a mutation or query is executed, but resolve_my_subscription/3 isn’t called ever.

What am I doing wrong here with subscriptions?