vars - a package for atomically capturing counters and other state.

Overview

When running applications it helps, for debugging purposes, to support counting events in a standardized way. There are some elaborate packages out there for doing this, but this package is a bare bones version that I have found useful.

Samples

To set things up, you request some new metrics:

m := vars.New()

Then you can add to counters like this:

m.Add("my-counter", 2)

or simply set a metric:

m.Set("a-record", "green")

You can obtain the current value of a metric with:

value := m.Get("my-counter")

which simply returns nil if the requested metric does not exist.

License info

The vars package is distributed with the same BSD 3-clause license as that used by golang itself.

Reporting bugs and feature requests

The vars package was developed purely out of self-interest to help debug other programs and packages. Should you find a bug or want to suggest a feature addition, please use the bug tracker.