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Add support for Systemd Socket Activation

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This commit is contained in:
Frédéric Guillot 2018-11-25 17:41:16 -08:00
parent 7838870a0c
commit af4c68feac
1 changed files with 18 additions and 0 deletions
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18
service/httpd/httpd.go
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@ -9,6 +9,7 @@ import (
"net" "net"
"net/http" "net/http"
"os" "os"
"strconv"
"strings" "strings"
"time" "time"
@ -40,6 +41,8 @@ func Serve(cfg *config.Config, store *storage.Storage, pool *worker.Pool, feedHa
} }
switch { switch {
case os.Getenv("LISTEN_PID") == strconv.Itoa(os.Getpid()):
startSystemdSocketServer(server)
case strings.HasPrefix(listenAddr, "/"): case strings.HasPrefix(listenAddr, "/"):
startUnixSocketServer(server, listenAddr) startUnixSocketServer(server, listenAddr)
case certDomain != "" && certCache != "": case certDomain != "" && certCache != "":
@ -57,6 +60,21 @@ func Serve(cfg *config.Config, store *storage.Storage, pool *worker.Pool, feedHa
return server return server
} }
func startSystemdSocketServer(server *http.Server) {
go func() {
f := os.NewFile(3, "systemd socket")
listener, err := net.FileListener(f)
if err != nil {
logger.Fatal(`Unable to create listener from systemd socket: %v`, err)
}
logger.Info(`Listening on systemd socket`)
if err := server.Serve(listener); err != http.ErrServerClosed {
logger.Fatal(`Server failed to start: %v`, err)
}
}()
}
func startUnixSocketServer(server *http.Server, socketFile string) { func startUnixSocketServer(server *http.Server, socketFile string) {
os.Remove(socketFile) os.Remove(socketFile)