From c8cd9ee648967f72ac76f6d28a8e85dd475a5e93 Mon Sep 17 00:00:00 2001
From: George Shammas <george@shamm.as>
Date: Mon, 30 Nov 2015 16:48:15 +0000
Subject: [PATCH] Add systemd socket support

---
 main.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/main.go b/main.go
index a7280b2..5126b22 100644
--- a/main.go
+++ b/main.go
@@ -13,6 +13,7 @@ import (
 
 	"github.com/gin-gonic/gin"
         "github.com/brandfolder/gin-gorelic"
+        "github.com/coreos/go-systemd/activation"
 )
 
 // Logger is a simple log handler, out puts in the standard of apache access log common.
@@ -189,6 +190,18 @@ func main() {
 		errc <- fcgi.Serve(fcgi_listen, r)
 	}(errc)
 
+
+	// Listen on whatever systemd tells us to.
+	listeners, err := activation.Listeners(true)
+	if err != nil {
+		fmt.Printf("Could not get systemd listerns with err %q", err)
+	}
+	for _, listener := range listeners {
+		go func(errc chan error) {
+			errc <- http.Serve(listener, r)
+		}(errc)
+	}
+
 	port := os.Getenv("PORT")
 	host := os.Getenv("HOST")
 	if port == "" {