template: the goapp docker package should now (in theory) build

It's quite a weird way to pull out the packge name from the attribute
set of defined packages, yet it kind of works.

I can't test it, as docker doesn't want to run Mach-O binaries, but
kicking this into hydra should result in some nice builds.

1 files changed, 34 insertions, 0 deletions

diff --git a/nix/templates/goapp/backend/log.go b/nix/templates/goapp/backend/log.go
new file mode 100644
index 0000000..5af719a
--- /dev/null
+++ b/nix/templates/goapp/backend/log.go
@@ -0,0 +1,34 @@
+package main
+
+import (
+	"net/http"
+	"os"
+
+	"github.com/gorilla/handlers"
+)
+
+// Defines a middleware containing a logfile
+//
+// This is done to combine gorilla/handlers with gorilla/mux middlewares to
+// just use r.Use(logger.Middleware) once instead of adding this to all
+// handlers manually (Yes, I'm really missing macros in Go...)
+type loggingMiddleware struct {
+	logFile *os.File
+}
+
+func (l *loggingMiddleware) Middleware(next http.Handler) http.Handler {
+	return handlers.LoggingHandler(l.logFile, next)
+}
+
+func authMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		session, _ := globalState.sessions.Get(r, "session")
+		username := session.Values["username"]
+
+		if username == nil {
+			http.Redirect(w, r, "/login", http.StatusSeeOther)
+		} else {
+			next.ServeHTTP(w, r)
+		}
+	})
+}