add rc cache/stats

backend/cache/cache.go

@@ -431,9 +431,29 @@ Params:
 `,
 	})
 
+	rc.Add(rc.Call{
+		Path:  "cache/stats",
+		Fn:    f.httpStats,
+		Title: "Get cache stats",
+		Help: `
+Show statistics for the cache remote.
+`,
+	})
+
 	return f, fsErr
 }
 
+func (f *Fs) httpStats(in rc.Params) (out rc.Params, err error) {
+	out = make(rc.Params)
+	m, err := f.Stats()
+	if err != nil {
+		return out, errors.Errorf("error while getting cache stats")
+	}
+	out["status"] = "ok"
+	out["stats"] = m
+	return out, nil
+}
+
 func (f *Fs) httpExpireRemote(in rc.Params) (out rc.Params, err error) {
 	out = make(rc.Params)
 	remoteInt, ok := in["remote"]