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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"fmt"
"math/rand"
"net/http"
"time"
tally "github.com/uber-go/tally/v4"
promreporter "github.com/uber-go/tally/v4/prometheus"
)
func main() {
r := promreporter.NewReporter(promreporter.Options{})
// Note: `promreporter.DefaultSeparator` is "_".
// Prometheus doesnt like metrics with "." or "-" in them.
scope, closer := tally.NewRootScope(tally.ScopeOptions{
Prefix: "my_service",
Tags: map[string]string{},
CachedReporter: r,
Separator: promreporter.DefaultSeparator,
}, 1*time.Second)
defer closer.Close()
counter := scope.Tagged(map[string]string{
"foo": "bar",
}).Counter("test_counter")
gauge := scope.Tagged(map[string]string{
"foo": "baz",
}).Gauge("test_gauge")
timer := scope.Tagged(map[string]string{
"foo": "qux",
}).Timer("test_timer_summary")
histogram := scope.Tagged(map[string]string{
"foo": "quk",
}).Histogram("test_histogram", tally.DefaultBuckets)
go func() {
for {
counter.Inc(1)
time.Sleep(time.Second)
}
}()
go func() {
for {
gauge.Update(rand.Float64() * 1000)
time.Sleep(time.Second)
}
}()
go func() {
for {
tsw := timer.Start()
hsw := histogram.Start()
time.Sleep(time.Duration(rand.Float64() * float64(time.Second)))
tsw.Stop()
hsw.Stop()
}
}()
http.Handle("/metrics", r.HTTPHandler())
fmt.Printf("Serving :8080/metrics\n")
fmt.Printf("%v\n", http.ListenAndServe(":8080", nil))
select {}
}
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