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// Copyright 2015 The etcd Authors
//
// 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
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v2http
import (
"math"
"net/http"
"strings"
"time"
"go.etcd.io/etcd/server/v3/etcdserver/api/etcdhttp"
"go.etcd.io/etcd/server/v3/etcdserver/api/v2auth"
"go.etcd.io/etcd/server/v3/etcdserver/api/v2http/httptypes"
"go.uber.org/zap"
)
const (
// time to wait for a Watch request
defaultWatchTimeout = time.Duration(math.MaxInt64)
)
func writeError(lg *zap.Logger, w http.ResponseWriter, r *http.Request, err error) {
if err == nil {
return
}
if e, ok := err.(v2auth.Error); ok {
herr := httptypes.NewHTTPError(e.HTTPStatus(), e.Error())
if et := herr.WriteTo(w); et != nil {
if lg != nil {
lg.Debug(
"failed to write v2 HTTP error",
zap.String("remote-addr", r.RemoteAddr),
zap.String("v2auth-error", e.Error()),
zap.Error(et),
)
}
}
return
}
etcdhttp.WriteError(lg, w, r, err)
}
// allowMethod verifies that the given method is one of the allowed methods,
// and if not, it writes an error to w. A boolean is returned indicating
// whether or not the method is allowed.
func allowMethod(w http.ResponseWriter, m string, ms ...string) bool {
for _, meth := range ms {
if m == meth {
return true
}
}
w.Header().Set("Allow", strings.Join(ms, ","))
http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
return false
}
func requestLogger(lg *zap.Logger, handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if lg != nil {
lg.Debug(
"handling HTTP request",
zap.String("method", r.Method),
zap.String("request-uri", r.RequestURI),
zap.String("remote-addr", r.RemoteAddr),
)
}
handler.ServeHTTP(w, r)
})
}
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