mirror of
https://github.com/k3s-io/kubernetes.git
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85 lines
2.0 KiB
Go
85 lines
2.0 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"crypto/sha256"
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"encoding/base64"
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"flag"
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"fmt"
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"log"
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"net/http"
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"time"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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"k8s.io/component-base/logs"
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"k8s.io/klog"
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)
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func main() {
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logs.InitLogs()
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defer logs.FlushLogs()
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pollInterval := flag.Int("poll-interval", 30, "poll interval of call to /healhtz in seconds")
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flag.Set("logtostderr", "true")
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flag.Parse()
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klog.Infof("started")
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cfg, err := rest.InClusterConfig()
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if err != nil {
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log.Fatalf("err: %v", err)
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}
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cfg.Wrap(func(rt http.RoundTripper) http.RoundTripper {
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return &debugRt{
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rt: rt,
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}
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})
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c := kubernetes.NewForConfigOrDie(cfg).RESTClient()
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t := time.Tick(time.Duration(*pollInterval) * time.Second)
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for {
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<-t
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klog.Infof("calling /healthz")
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b, err := c.Get().AbsPath("/healthz").Do().Raw()
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if err != nil {
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klog.Errorf("status=failed")
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klog.Errorf("error checking /healthz: %v\n%s\n", err, string(b))
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}
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}
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}
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type debugRt struct {
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rt http.RoundTripper
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}
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func (rt *debugRt) RoundTrip(req *http.Request) (*http.Response, error) {
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authHeader := req.Header.Get("Authorization")
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if len(authHeader) != 0 {
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authHash := sha256.Sum256([]byte(fmt.Sprintf("%s|%s", "salt", authHeader)))
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klog.Infof("authz_header=%s", base64.RawURLEncoding.EncodeToString(authHash[:]))
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} else {
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klog.Errorf("authz_header=<empty>")
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}
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return rt.rt.RoundTrip(req)
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}
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func (rt *debugRt) WrappedRoundTripper() http.RoundTripper { return rt.rt }
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