Popularity
5.2
Growing
Activity
1.3
Declining
250
5
19

Description

Package provides simple uniform interface for metrics such as counters, gauges and histograms. It keeps track of metrics in runtime and can be used for some basic web service instrumentation in Go, where complex tools such as Prometheus or InfluxDB are not required.

It is compatible with expvar package, that is also commonly used for monitoring.

Programming language: Go
Latest version: v0.1.0

metric alternatives and similar packages

Based on the "DevOps Tools" category

Do you think we are missing an alternative of metric or a related project?

Add another 'DevOps Tools' Package

README

metric

Build Status GoDoc Go Report Card

Package provides simple uniform interface for metrics such as counters, gauges and histograms. It keeps track of metrics in runtime and can be used for some basic web service instrumentation in Go, where complex tools such as Prometheus or InfluxDB are not required.

It is compatible with expvar package, that is also commonly used for monitoring.

Usage

// Create new metric. All metrics may take time frames if you want them to keep
// history. If no time frames are given the metric only keeps track of a single
// current value.
c := metric.NewCounter("15m10s") // 15 minutes of history with 10 second precision
// Increment counter
c.Add(1)
// Return JSON with all recorded counter values
c.String() // Or json.Marshal(c)

// With expvar

// Register a metric
expvar.Publish("latency", metric.NewHistogram("5m1s", "15m30s", "1h1m"))
// Register HTTP handler to visualize metrics
http.Handle("/debug/metrics", metric.Handler(metric.Exposed))

// Measure time and update the metric
start := time.Now()
...
expvar.Get("latency").(metric.Metric).Add(time.Since(start).Seconds())

Metrics are thread-safe and can be updated from background goroutines.

Web UI

Nothing fancy, really, but still better than reading plain JSON. No javascript, only good old HTML, CSS and SVG.

[web ui](example/screenshot.png)

Of course you may customize a list of metrics to show in the web UI.

If you need precise values - you may use /debug/vars HTTP endpoint provided by expvar.

License

Code is distributed under MIT license, feel free to use it in your proprietary projects as well.


*Note that all licence references and agreements mentioned in the metric README section above are relevant to that project's source code only.