add status endpoint

main.go

@@ -6,6 +6,7 @@ package main
 import (
 	"fmt"
 	"net/http"
+	"runtime/debug"
 
 	mail_services "github.com/denyskon/postalion/email"
 	form_service "github.com/denyskon/postalion/form"
@@ -62,6 +63,17 @@ func main() {
 	router := pat.New()
 
 	router.Post("/form/{name}", formHandler)
+	router.Get("/status", func(wr http.ResponseWriter, req *http.Request) {
+		info, ok := debug.ReadBuildInfo()
+		if !ok {
+			log.Error("Failed to read build info")
+			wr.WriteHeader(http.StatusInternalServerError)
+			wr.Write([]byte("Failed to read build info"))
+		}
+
+		wr.WriteHeader(http.StatusOK)
+		wr.Write([]byte(fmt.Sprintf("POSTalion %s", info.Main.Version)))
+	})
 
 	http.Handle("/", router)