Simple and fast dashboard with a go backend and a mostly HTML+CSS frontend with a small amount of JS.
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Copyright 2021 Arsen Musayelyan
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.
package main
import (
// Send error to HTTP response
func httpError(res http.ResponseWriter, errTmpl *template.Template, config Conf, statusCode int, reason string) {
// Write error code to response
// Execute error template, outputting to response
err := errTmpl.Execute(res, map[string]interface{}{
"StatusCode": statusCode,
"Reason": reason,
"Config": config,
if err != nil {
log.Warn().Err(err).Msg("Error occurred while handling error")
func compressRes(res http.ResponseWriter) *gzip.Writer {
// Set response header to reflect gzip compression
res.Header().Set("Content-Encoding", "gzip")
// Wrap response in gzip writer
return gzip.NewWriter(res)
// Check if a string slice contains a string
func strSlcContains(slice []string, str string) bool {
// For every value in slice
for _, val := range slice {
// If value is contained in provided string, return true
if strings.Contains(str, val) {
return true
return false