khenaidoo | 2672188 | 2021-08-11 17:42:52 -0400 | [diff] [blame] | 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 | |
| 15 | package v2http |
| 16 | |
| 17 | import ( |
| 18 | "math" |
| 19 | "net/http" |
| 20 | "strings" |
| 21 | "time" |
| 22 | |
| 23 | "github.com/coreos/etcd/etcdserver/api/etcdhttp" |
| 24 | "github.com/coreos/etcd/etcdserver/api/v2http/httptypes" |
| 25 | "github.com/coreos/etcd/etcdserver/auth" |
| 26 | "github.com/coreos/etcd/pkg/logutil" |
| 27 | |
| 28 | "github.com/coreos/pkg/capnslog" |
| 29 | ) |
| 30 | |
| 31 | const ( |
| 32 | // time to wait for a Watch request |
| 33 | defaultWatchTimeout = time.Duration(math.MaxInt64) |
| 34 | ) |
| 35 | |
| 36 | var ( |
| 37 | plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "etcdserver/api/v2http") |
| 38 | mlog = logutil.NewMergeLogger(plog) |
| 39 | ) |
| 40 | |
| 41 | func writeError(w http.ResponseWriter, r *http.Request, err error) { |
| 42 | if err == nil { |
| 43 | return |
| 44 | } |
| 45 | if e, ok := err.(auth.Error); ok { |
| 46 | herr := httptypes.NewHTTPError(e.HTTPStatus(), e.Error()) |
| 47 | if et := herr.WriteTo(w); et != nil { |
| 48 | plog.Debugf("error writing HTTPError (%v) to %s", et, r.RemoteAddr) |
| 49 | } |
| 50 | return |
| 51 | } |
| 52 | etcdhttp.WriteError(w, r, err) |
| 53 | } |
| 54 | |
| 55 | // allowMethod verifies that the given method is one of the allowed methods, |
| 56 | // and if not, it writes an error to w. A boolean is returned indicating |
| 57 | // whether or not the method is allowed. |
| 58 | func allowMethod(w http.ResponseWriter, m string, ms ...string) bool { |
| 59 | for _, meth := range ms { |
| 60 | if m == meth { |
| 61 | return true |
| 62 | } |
| 63 | } |
| 64 | w.Header().Set("Allow", strings.Join(ms, ",")) |
| 65 | http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed) |
| 66 | return false |
| 67 | } |
| 68 | |
| 69 | func requestLogger(handler http.Handler) http.Handler { |
| 70 | return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { |
| 71 | plog.Debugf("[%s] %s remote:%s", r.Method, r.RequestURI, r.RemoteAddr) |
| 72 | handler.ServeHTTP(w, r) |
| 73 | }) |
| 74 | } |