Apply standard format, add dummy server

pkg/router/debug/debug.go

@@ -0,0 +1,74 @@
+package debug
+
+import (
+	"io"
+	"net/http"
+
+	"github.com/go-chi/chi"
+	"github.com/go-chi/chi/middleware"
+	"github.com/owncloud/ocis-webdav/pkg/handler/metrics"
+	"github.com/owncloud/ocis-webdav/pkg/middleware/header"
+	"github.com/rs/zerolog/hlog"
+	"github.com/rs/zerolog/log"
+)
+
+// debug gets initialized by Router and configures the router.
+type debug struct {
+	token string
+	pprof bool
+}
+
+// Router initializes a router for the debug server.
+func Router(opts ...Option) *chi.Mux {
+	d := new(debug)
+
+	for _, opt := range opts {
+		opt(d)
+	}
+
+	mux := chi.NewRouter()
+
+	mux.Use(hlog.NewHandler(log.Logger))
+	mux.Use(hlog.RemoteAddrHandler("ip"))
+	mux.Use(hlog.URLHandler("path"))
+	mux.Use(hlog.MethodHandler("method"))
+	mux.Use(hlog.RequestIDHandler("request_id", "Request-Id"))
+
+	mux.Use(middleware.RealIP)
+	mux.Use(header.Version)
+	mux.Use(header.Cache)
+	mux.Use(header.Secure)
+	mux.Use(header.Options)
+
+	mux.Route("/", func(root chi.Router) {
+		if d.pprof {
+			root.Mount(
+				"/debug",
+				middleware.Profiler(),
+			)
+		}
+
+		root.Mount(
+			"/metrics",
+			metrics.Handler(
+				metrics.WithToken(d.token),
+			),
+		)
+
+		root.Get("/healthz", func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "text/plain")
+			w.WriteHeader(http.StatusOK)
+
+			io.WriteString(w, http.StatusText(http.StatusOK))
+		})
+
+		root.Get("/readyz", func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "text/plain")
+			w.WriteHeader(http.StatusOK)
+
+			io.WriteString(w, http.StatusText(http.StatusOK))
+		})
+	})
+
+	return mux
+}