1// Copyright 2015 The etcd Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package httptypes
16
17import (
18	"encoding/json"
19	"net/http"
20
21	"github.com/coreos/pkg/capnslog"
22)
23
24var (
25	plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "etcdserver/api/v2http/httptypes")
26)
27
28type HTTPError struct {
29	Message string `json:"message"`
30	// Code is the HTTP status code
31	Code int `json:"-"`
32}
33
34func (e HTTPError) Error() string {
35	return e.Message
36}
37
38func (e HTTPError) WriteTo(w http.ResponseWriter) error {
39	w.Header().Set("Content-Type", "application/json")
40	w.WriteHeader(e.Code)
41	b, err := json.Marshal(e)
42	if err != nil {
43		plog.Panicf("marshal HTTPError should never fail (%v)", err)
44	}
45	if _, err := w.Write(b); err != nil {
46		return err
47	}
48	return nil
49}
50
51func NewHTTPError(code int, m string) *HTTPError {
52	return &HTTPError{
53		Message: m,
54		Code:    code,
55	}
56}
57