Installation

go get -u github.com/andrew528i/metrics@v1.0.1

Usage

package main
import (
	"math/rand"
	"sync"
	"time"
	"github.com/andrew528i/metrics"
	"github.com/go-redis/redis/v7"
)
// some heavy func, i.e. photo processing or smth else
func heavy() {
	dur := time.Millisecond * time.Duration(rand.Intn(1000))
	time.Sleep(dur)
}
func main() {
	// initialize redis client
	client := redis.NewClient(&redis.Options{
		Addr: "127.0.0.1:6379",
		DB: 0,
		Password: "",
	})
	interval := 3 // in minutes
	m := metrics.NewMetrics(client, interval)
	// counter metric
	for i := 0; i < 10; i += 1 {
		m.Internal.Counter.Increase("my_value")
	}
	// average counter metric
	for i := 0; i < 10; i += 1 {
		v := int64(rand.Intn(100))
		m.Internal.AvgCounter.Add("my_avg_value", v)
	}
	// execution time metric
	var wg sync.WaitGroup
	for i := 0; i < 25; i += 1 {
		wg.Add(1)
		go func() {
			timer := m.Time.Start("heavy_avg_ts")
			heavy()
			timer.Stop()
			wg.Done()
		}()
	}
	wg.Wait()
	// run metrics http server
	srv := metrics.NewServer(m)
	srv.Run()
}

http://localhost:6767/internal/my_value
http://localhost:6767/internal/my_avg_value
http://localhost:6767/internal/heavy_avg_ts

http://localhost:6767/system/cpu // in percents
http://localhost:6767/system/ram // in megabytes
http://localhost:6767/system/disk // disk usage in percents

Counter

m.Internal.Counter.Increase("new_users")

Average Counter

m.Internal.AvgCounter.Add("order_sum", order.sum)

Average execution time

timer := m.Time.Start("process_photo_ts")
process_photo()
timer.Stop()