This is the Rust goodmetrics client. It bundles an opentelemetry protocol downstream and some performance tools like the PooledMetricsAllocator. To use any grpc downstream (goodmetrics or opentelemetry) you will need a tokio runtime.
See the lightstep demo for a complete setup and usage example with opentelemetry.
Once you have a configured MetricsFactory, the way you use Metrics does not change with subsequent updates to the configured downstream(s):
let metrics = metrics_factory.record_scope("demo"); // By default, includes a "demo_totaltime" histogram measurement
let _scope = metrics.time("timed_delay"); // you can time additional scopes
metrics.measurement("ran", 1); // measurements can be plain numbers; when preaggregated they are StatisticSets (min/max/sum/count)
metrics.dimension("mod", i % 8); // you can add dimensions to a Metrics whenever you want. All measurements in this Metrics record are dimensioned by this value.
metrics.distribution("some_continuous_value", instantaneous_network_bandwidth); // histograms are aggregated sparsely, and truncated to 2 significant figures (base 10).Use cargo bump major/minor/patch --git-tag to update version.