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package main
import (
"fmt"
"log"
"net/http"
"os"
"github.com/performancecopilot/speed/v4"
)
var metric speed.Counter
func main() {
var err error
metric, err = speed.NewPCPCounter(
0,
"http.requests",
"Number of Requests",
)
if err != nil {
log.Fatal("Could not create counter, error: ", err)
}
client, err := speed.NewPCPClient("example")
if err != nil {
log.Fatal("Could not create client, error: ", err)
}
client.MustRegister(metric)
client.MustStart()
defer client.MustStop()
http.HandleFunc("/increment", handleIncrement)
go func() {
if err := http.ListenAndServe(":8080", nil); err != nil {
log.Fatal("Could not listen on port, error: ", err)
}
}()
fmt.Println("To stop the server press enter")
_, _ = os.Stdin.Read(make([]byte, 1))
os.Exit(0)
}
func handleIncrement(w http.ResponseWriter, r *http.Request) {
metric.Up()
fmt.Fprintf(w, "incremented\n")
}
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