The vJoule API for rust is accessible from the crate vjoule_api available in crates.io.

The API is base on the type vjoule_api::VJouleAPI. This type is used to retreive the consumption of the machine from different components (enabled by the configuration of the vjoule_service).

The Rust API uses the vjoule service to retrieve the consumption of the components. The service must be running, using the simple core plugin. The getCurrentMachineConsumption function triggers a consumption reading by the service, and retrieves the values of each enabled component (disabled components are set to 0). So there is no need to wait for the next iteration of the service to read a value. In fact, the service can be configured with a frequency of 0 (i.e., no iteration at all).

Further information about the API is presented here API Documentation. And a complete example can be found here.

# #![allow(unused_variables)]
#fn main() {
let api = vjoule_api::VJouleAPI::new ();

let beg = api.get_current_machine_consumption ()?;
foo ();
let end = api.get_current_machine_consumption ()?;

let diff = end - beg;
println!("Foo took {}", diff);
#}