tower-trace-metrics

A tower-http TraceLayer that records metrics using the metrics facade.

```rust use towertracemetrics::make_layer; use tower::ServiceBuilder; use bytes;

fn main() { let service = ServiceBuilder::new() // Make a trace layer where the chunks are bytes::Bytes .layer(make_layer(|b: &bytes::Bytes| b.len() as u64)); // ... Use this service in a Tower middleware stack. } ```

Recorded Metrics

• httprequestcounter The total count of all requests
• httprequestfailure_counter The total count of all request failures
• httprequestsizebyteshist A histogram of request size in bytes
• httprequestrequesttimemicros_hist A histogram of request time in microseconds

Each metric is faceted by path, method, and host for the request.