Latest update of metrics_cloudwatch silently failing

[harshkpatel2002]

It seems that in the latest update (2.0.0), metrics are no longer emitting to cloudwatch. As well the current "How to use" is no longer functional and outdated.

fn main() {
    let metrics_builder = metrics_cloudwatch::Builder::new();
    metrics_builder =
        metrics_cloudwatch::Builder::cloudwatch_namespace(metrics_builder, "namespace");
    init_thread(metrics_builder, metrics::set_boxed_recorder).unwrap();

    metrics::counter!("ErrorCount", 1);
}

Whereas in this previous iteration the following will work:

metrics = "0.16"
metrics_cloudwatch = "0.15.0"

fn main() {
    metrics_cloudwatch::builder(metrics_cloudwatch::Region::default())
        .cloudwatch_namespace("namespace")
        .init_thread(metrics::set_boxed_recorder)
        .unwrap();

    metrics::counter!("ErrorCount", 1);
}

[VladimirBramstedt]

firstly, does it work if you specify a region explicitly? ( a region must be set, but aws_sdk has no defaulting, meaning that if you dont have a region provider either in your aws config or via some other method, it will fail.
secondly, to test that claim, run your test program with log/tracing enabled for the aws sdk crate and see what it outputs.