Attribute Macro observe_async

#[observe_async]

A procedural macro that automatically injects telemetry code into async functions that do not return a Result type.

This macro wraps async functions and adds instrumentation to measure:

1. Latency - how long the function takes to execute
2. Success counter - function completion count

Example

use hyperactor_actor::observe_async;

#[observe_async("my_module")]
async fn process_data(data: &str) -> String {
    // Function implementation
    // Telemetry will be automatically collected
}