mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-10-19 13:49:53 +00:00
07b05616a0
Bumps [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes) from 1.26.2 to 1.27.2. - [Release notes](https://github.com/kubernetes/kubernetes/releases) - [Commits](https://github.com/kubernetes/kubernetes/compare/v1.26.2...v1.27.2) --- updated-dependencies: - dependency-name: k8s.io/kubernetes dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
/*
|
|
Copyright 2021 The Kubernetes 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 filters
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net/http"
|
|
"time"
|
|
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
"k8s.io/apiserver/pkg/endpoints/request"
|
|
"k8s.io/apiserver/pkg/endpoints/responsewriter"
|
|
)
|
|
|
|
var (
|
|
watchVerbs = sets.NewString("watch")
|
|
)
|
|
|
|
// WithLatencyTrackers adds a LatencyTrackers instance to the
|
|
// context associated with a request so that we can measure latency
|
|
// incurred in various components within the apiserver.
|
|
func WithLatencyTrackers(handler http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
|
|
ctx := req.Context()
|
|
requestInfo, ok := request.RequestInfoFrom(ctx)
|
|
if !ok {
|
|
handleError(w, req, http.StatusInternalServerError, fmt.Errorf("no RequestInfo found in context, handler chain must be wrong"))
|
|
return
|
|
}
|
|
|
|
if watchVerbs.Has(requestInfo.Verb) {
|
|
handler.ServeHTTP(w, req)
|
|
return
|
|
}
|
|
|
|
req = req.WithContext(request.WithLatencyTrackers(ctx))
|
|
w = responsewriter.WrapForHTTP1Or2(&writeLatencyTracker{
|
|
ResponseWriter: w,
|
|
ctx: req.Context(),
|
|
})
|
|
|
|
handler.ServeHTTP(w, req)
|
|
})
|
|
}
|
|
|
|
var _ http.ResponseWriter = &writeLatencyTracker{}
|
|
var _ responsewriter.UserProvidedDecorator = &writeLatencyTracker{}
|
|
|
|
type writeLatencyTracker struct {
|
|
http.ResponseWriter
|
|
ctx context.Context
|
|
}
|
|
|
|
func (wt *writeLatencyTracker) Unwrap() http.ResponseWriter {
|
|
return wt.ResponseWriter
|
|
}
|
|
|
|
func (wt *writeLatencyTracker) Write(bs []byte) (int, error) {
|
|
startedAt := time.Now()
|
|
defer func() {
|
|
request.TrackResponseWriteLatency(wt.ctx, time.Since(startedAt))
|
|
}()
|
|
|
|
return wt.ResponseWriter.Write(bs)
|
|
}
|