forked from rs/xstats
/
handler_example_test.go
43 lines (35 loc) · 1.05 KB
/
handler_example_test.go
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package xstats_test
import (
"log"
"net"
"net/http"
"time"
"github.com/rs/xhandler"
"github.com/rs/xstats"
"github.com/rs/xstats/dogstatsd"
"golang.org/x/net/context"
)
func ExampleNewHandler() {
c := xhandler.Chain{}
// Install the metric handler with dogstatsd backend client and some env tags
flushInterval := 5 * time.Second
tags := []string{"role:my-service"}
statsdWriter, err := net.Dial("udp", "127.0.0.1:8126")
if err != nil {
log.Fatal(err)
}
c.UseC(xstats.NewHandler(dogstatsd.New(statsdWriter, flushInterval), tags))
// Here is your handler
h := c.Handler(xhandler.HandlerFuncC(func(ctx context.Context, w http.ResponseWriter, r *http.Request) {
// Get the xstats request's instance from the context. You can safely assume it will
// be always there, if the handler is removed, xstats.FromContext will return a nop
// instance.
m := xstats.FromContext(ctx)
// Count something
m.Count("requests", 1, "route:index")
}))
http.Handle("/", h)
if err := http.ListenAndServe(":8080", nil); err != nil {
log.Fatal(err)
}
}