HTTPHandlers.go

/*
 * This file is part of VianuEdu.
 *
 *  VianuEdu is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 *  VianuEdu is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with VianuEdu.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Developed by Matei Gardus <matei@gardus.eu>
 */

package vianueduserver

import (
	"fmt"
	"github.com/sirupsen/logrus"
	"io/ioutil"
	"net/http"
	"os"
)

// dispense404 is a HTTP Handler that prints out a custom 404 page.
//
// As it stands, the http.FileServer will not easily allow for custom 404 pages.
// TODO implement custom 404 for static site.
func dispense404(w http.ResponseWriter, r *http.Request) {
	templateFile, err := os.Open("errors/404.html")
	if err != nil {
		HTTPLogger.WithFields(logrus.Fields{
			"error": err,
		}).Fatal("Error opening 404 template file!")
	}
	defer templateFile.Close()

	HTMLOutput, err := ioutil.ReadAll(templateFile)
	if err != nil {
		HTTPLogger.WithFields(logrus.Fields{
			"error": err,
		}).Fatal("Error reading 404 template variable!")
	}
	fmt.Fprint(w, HTMLOutput)
}