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* Shutdown server gracefully

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* Remove unused customLabel variables
* Rename title/body text from apache exporter
This commit is contained in:
Enrico Stahn 2018-02-24 22:13:18 +11:00
parent 4071a9abb5
commit f3d7296080
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GPG key ID: 5263621C269A50DE
1 changed files with 44 additions and 8 deletions
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52
cmd/server.go
View file

@ -14,6 +14,7 @@
package cmd package cmd
import ( import (
"context"
"fmt" "fmt"
"github.com/hipages/php-fpm_exporter/phpfpm" "github.com/hipages/php-fpm_exporter/phpfpm"
"github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus"
@ -21,15 +22,15 @@ import (
"github.com/spf13/cobra" "github.com/spf13/cobra"
"net/http" "net/http"
"os" "os"
"os/signal"
"time"
) )
// Configuration variables // Configuration variables
var ( var (
listeningAddress string listeningAddress string
metricsEndpoint string metricsEndpoint string
scrapeURIs []string scrapeURIs []string
customLabelNames []string
customLabelValues []string
) )
// serverCmd represents the server command // serverCmd represents the server command
@ -54,17 +55,52 @@ to quickly create a Cobra application.`,
exporter := phpfpm.NewExporter(pm) exporter := phpfpm.NewExporter(pm)
prometheus.MustRegister(exporter) prometheus.MustRegister(exporter)
srv := &http.Server{
Addr: listeningAddress,
// Good practice to set timeouts to avoid Slowloris attacks.
WriteTimeout: time.Second * 15,
ReadTimeout: time.Second * 15,
IdleTimeout: time.Second * 60,
}
http.Handle(metricsEndpoint, promhttp.Handler()) http.Handle(metricsEndpoint, promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html> w.Write([]byte(`<html>
<head><title>Apache Exporter</title></head> <head><title>php-fpm_exporter</title></head>
<body> <body>
<h1>Apache Exporter</h1> <h1>php-fpm_exporter</h1>
<p><a href='` + metricsEndpoint + `'>Metrics</a></p> <p><a href='` + metricsEndpoint + `'>Metrics</a></p>
</body> </body>
</html>`)) </html>`))
}) })
log.Fatal(http.ListenAndServe(listeningAddress, nil))
// Run our server in a goroutine so that it doesn't block.
go func() {
if err := srv.ListenAndServe(); err != nil {
log.Error(err)
}
}()
c := make(chan os.Signal, 1)
// We'll accept graceful shutdowns when quit via SIGINT (Ctrl+C)
// SIGKILL, SIGQUIT or SIGTERM (Ctrl+/) will not be caught.
signal.Notify(c, os.Interrupt)
// Block until we receive our signal.
<-c
// Create a deadline to wait for.
var wait time.Duration
ctx, cancel := context.WithTimeout(context.Background(), wait)
defer cancel()
// Doesn't block if no connections, but will otherwise wait
// until the timeout deadline.
srv.Shutdown(ctx)
// Optionally, you could run srv.Shutdown in a goroutine and block on
// <-ctx.Done() if your application should wait for other services
// to finalize based on context cancellation.
log.Info("Shutting down")
os.Exit(0)
}, },
} }