add support for systemd notify
This commit is contained in:
parent
d3360f0fd9
commit
f54a736353
17
cmd/root.go
17
cmd/root.go
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@ -7,10 +7,12 @@ import (
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log2 "log"
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"net/http"
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"os"
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"os/signal"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"syscall"
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"time"
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"github.com/NYTimes/logrotate"
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@ -26,6 +28,7 @@ import (
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"github.com/pterodactyl/wings/config"
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"github.com/pterodactyl/wings/environment"
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"github.com/pterodactyl/wings/internal/notify"
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"github.com/pterodactyl/wings/loggers/cli"
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"github.com/pterodactyl/wings/remote"
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"github.com/pterodactyl/wings/router"
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@ -308,6 +311,7 @@ func rootCmdRun(cmd *cobra.Command, _ []string) {
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}
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// Check if the server should run with TLS but using autocert.
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go func(s *http.Server, api config.ApiConfiguration, sys config.SystemConfiguration, autotls bool, tlshostname string) {
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if autotls {
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m := autocert.Manager{
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Prompt: autocert.AcceptTOS,
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@ -346,6 +350,19 @@ func rootCmdRun(cmd *cobra.Command, _ []string) {
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if err := s.ListenAndServe(); err != nil {
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log.WithField("error", err).Fatal("failed to configure HTTP server")
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}
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}(s, api, sys, autotls, tlshostname)
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if err := notify.Readiness(); err != nil {
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log.WithField("error", err).Error("failed to notify systemd of readiness state")
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}
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c := make(chan os.Signal, 1)
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signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
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<-c
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if err := notify.Stopping(); err != nil {
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log.WithField("error", err).Error("failed to notify systemd of stopping state")
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}
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}
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// Reads the configuration from the disk and then sets up the global singleton
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19
internal/notify/notify.go
Normal file
19
internal/notify/notify.go
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@ -0,0 +1,19 @@
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// Package notify handles notifying the operating system of the program's state.
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//
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// For linux based operating systems, this is done through the systemd socket
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// set by "NOTIFY_SOCKET" environment variable.
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//
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// Currently, no other operating systems are supported.
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package notify
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func Readiness() error {
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return readiness()
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}
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func Reloading() error {
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return reloading()
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}
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func Stopping() error {
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return stopping()
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}
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48
internal/notify/notify_linux.go
Normal file
48
internal/notify/notify_linux.go
Normal file
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@ -0,0 +1,48 @@
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package notify
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import (
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"io"
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"net"
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"os"
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"strings"
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)
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func notify(path string, r io.Reader) error {
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s := &net.UnixAddr{
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Name: path,
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Net: "unixgram",
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}
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c, err := net.DialUnix(s.Net, nil, s)
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if err != nil {
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return err
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}
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defer c.Close()
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if _, err := io.Copy(c, r); err != nil {
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return err
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}
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return nil
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}
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func socketNotify(payload string) error {
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v, ok := os.LookupEnv("NOTIFY_SOCKET")
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if !ok || v == "" {
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return nil
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}
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if err := notify(v, strings.NewReader(payload)); err != nil {
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return err
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}
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return nil
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}
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func readiness() error {
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return socketNotify("READY=1")
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}
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func reloading() error {
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return socketNotify("RELOADING=1")
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}
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func stopping() error {
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return socketNotify("STOPPING=1")
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}
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15
internal/notify/notify_other.go
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15
internal/notify/notify_other.go
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@ -0,0 +1,15 @@
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// +build !linux
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package notify
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func readiness() error {
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return nil
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}
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func reloading() error {
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return nil
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}
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func stopping() error {
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return nil
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}
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