ea4a929fa9
* Allow 15 seconds to shut down v2.0.0 and above crashes with message "Error during shutdowncontext deadline exceeded" and exit code 1 upon SIGINT being received. v1.2.1 seems to be unaffected. * Add bats test * Reduce to 10 seconds, define directly Co-Authored-By: andytson-inviqa <andytson-inviqa@users.noreply.github.com> * style: gofmt -s * chore: bump golang to 1.17 and fix golangci Co-authored-by: andytson-inviqa <andytson-inviqa@users.noreply.github.com> Co-authored-by: Enrico Stahn <enrico.stahn@gmail.com>
139 lines
4.5 KiB
Go
139 lines
4.5 KiB
Go
// Copyright © 2018 Enrico Stahn <enrico.stahn@gmail.com>
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"context"
|
|
"net/http"
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/hipages/php-fpm_exporter/phpfpm"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/client_golang/prometheus/promhttp"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
// Configuration variables
|
|
var (
|
|
listeningAddress string
|
|
metricsEndpoint string
|
|
scrapeURIs []string
|
|
fixProcessCount bool
|
|
)
|
|
|
|
// serverCmd represents the server command
|
|
var serverCmd = &cobra.Command{
|
|
Use: "server",
|
|
Short: "A brief description of your command",
|
|
Long: `A longer description that spans multiple lines and likely contains examples
|
|
and usage of using your command. For example:
|
|
|
|
Cobra is a CLI library for Go that empowers applications.
|
|
This application is a tool to generate the needed files
|
|
to quickly create a Cobra application.`,
|
|
Run: func(cmd *cobra.Command, args []string) {
|
|
log.Infof("Starting server on %v with path %v", listeningAddress, metricsEndpoint)
|
|
|
|
pm := phpfpm.PoolManager{}
|
|
|
|
for _, uri := range scrapeURIs {
|
|
pm.Add(uri)
|
|
}
|
|
|
|
exporter := phpfpm.NewExporter(pm)
|
|
|
|
if fixProcessCount {
|
|
log.Info("Idle/Active/Total Processes will be calculated by php-fpm_exporter.")
|
|
exporter.CountProcessState = true
|
|
}
|
|
|
|
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.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
|
|
_, err := w.Write([]byte(`<html>
|
|
<head><title>php-fpm_exporter</title></head>
|
|
<body>
|
|
<h1>php-fpm_exporter</h1>
|
|
<p><a href='` + metricsEndpoint + `'>Metrics</a></p>
|
|
</body>
|
|
</html>`))
|
|
|
|
if err != nil {
|
|
log.Error()
|
|
}
|
|
})
|
|
|
|
// 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) or SIGTERM
|
|
// SIGKILL, SIGQUIT will not be caught.
|
|
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
|
|
|
|
// Block until we receive our signal.
|
|
<-c
|
|
|
|
// Create a deadline to wait for.
|
|
wait := time.Second * 10
|
|
ctx, cancel := context.WithTimeout(context.Background(), wait)
|
|
defer cancel()
|
|
// Doesn't block if no connections, but will otherwise wait
|
|
// until the timeout deadline.
|
|
if err := srv.Shutdown(ctx); err != nil {
|
|
log.Fatal("Error during shutdown", err)
|
|
}
|
|
// 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)
|
|
},
|
|
}
|
|
|
|
func init() {
|
|
RootCmd.AddCommand(serverCmd)
|
|
|
|
serverCmd.Flags().StringVar(&listeningAddress, "web.listen-address", ":9253", "Address on which to expose metrics and web interface.")
|
|
serverCmd.Flags().StringVar(&metricsEndpoint, "web.telemetry-path", "/metrics", "Path under which to expose metrics.")
|
|
serverCmd.Flags().StringSliceVar(&scrapeURIs, "phpfpm.scrape-uri", []string{"tcp://127.0.0.1:9000/status"}, "FastCGI address, e.g. unix:///tmp/php.sock;/status or tcp://127.0.0.1:9000/status")
|
|
serverCmd.Flags().BoolVar(&fixProcessCount, "phpfpm.fix-process-count", false, "Enable to calculate process numbers via php-fpm_exporter since PHP-FPM sporadically reports wrong active/idle/total process numbers.")
|
|
|
|
// Workaround since vipers BindEnv is currently not working as expected (see https://github.com/spf13/viper/issues/461)
|
|
|
|
envs := map[string]string{
|
|
"PHP_FPM_WEB_LISTEN_ADDRESS": "web.listen-address",
|
|
"PHP_FPM_WEB_TELEMETRY_PATH": "web.telemetry-path",
|
|
"PHP_FPM_SCRAPE_URI": "phpfpm.scrape-uri",
|
|
"PHP_FPM_FIX_PROCESS_COUNT": "phpfpm.fix-process-count",
|
|
}
|
|
|
|
mapEnvVars(envs, serverCmd)
|
|
}
|