How to read the value in the AttrFnGetter closure

[firewave-remo]

Thanks for this awesome library! Way easier to use than others I have tried!

But currently, I hit a wall and I am not able to figure out how I get the underlying value inside the closure of AttrFnGetter (The getter to retrieve a value)

let getter = AttrFnGetter::new(
        move |node_id, timestamps_to_return, attribute_id, index_range, data_encoding, max_age| -> std::result::Result<Option<DataValue>, StatusCode> {

          println!("In Getter");
          dbg!(address_space_clone.is_locked()); // address space is already locked here. So i am not able to retrieve the value
          let mut address_space = address_space.write();
          if let Some(node) = address_space.find_variable(node_id) {
            let data_value = node.value(timestamps_to_return, index_range, data_encoding, max_age);
            // apply some transformations to the value and return it
          }
        },

I would like to apply some transformations to the value and then return it. Is there a possibility i am missing? Unfortunately the simple_server example does not show how to get the value. It does only show how to create a new value and return this value.

[firewave-remo]

Closing this, as i thought the Getter and Setter act more like an interceptor. But as i was digging through the code of this and other repos, it turns out that these are mostly used for when you have to get a value from other systems.

I would still be cool to have interceptors for getting and setting the value.