mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-27 08:40:23 +00:00
102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
/*
|
|
Copyright 2017 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 main
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/spf13/pflag"
|
|
"k8s.io/apiserver/pkg/util/flag"
|
|
"k8s.io/apiserver/pkg/util/logs"
|
|
)
|
|
|
|
// This Pod's /checknosnat takes `target` and `ips` arguments, and queries {target}/checknosnat?ips={ips}
|
|
|
|
type MasqTestProxy struct {
|
|
Port string
|
|
}
|
|
|
|
func NewMasqTestProxy() *MasqTestProxy {
|
|
return &MasqTestProxy{
|
|
Port: "31235",
|
|
}
|
|
}
|
|
|
|
func (m *MasqTestProxy) AddFlags(fs *pflag.FlagSet) {
|
|
fs.StringVar(&m.Port, "port", m.Port, "The port to serve /checknosnat endpoint on.")
|
|
}
|
|
|
|
func main() {
|
|
m := NewMasqTestProxy()
|
|
m.AddFlags(pflag.CommandLine)
|
|
|
|
flag.InitFlags()
|
|
logs.InitLogs()
|
|
defer logs.FlushLogs()
|
|
|
|
if err := m.Run(); err != nil {
|
|
fmt.Fprintf(os.Stderr, "%v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
}
|
|
|
|
func (m *MasqTestProxy) Run() error {
|
|
// register handler
|
|
http.HandleFunc("/checknosnat", checknosnat)
|
|
|
|
// spin up the server
|
|
return http.ListenAndServe(":"+m.Port, nil)
|
|
}
|
|
|
|
type handler func(http.ResponseWriter, *http.Request)
|
|
|
|
func joinErrors(errs []error, sep string) string {
|
|
strs := make([]string, len(errs))
|
|
for i, err := range errs {
|
|
strs[i] = err.Error()
|
|
}
|
|
return strings.Join(strs, sep)
|
|
}
|
|
|
|
func checknosnatURL(pip, ips string) string {
|
|
return fmt.Sprintf("http://%s/checknosnat?ips=%s", pip, ips)
|
|
}
|
|
|
|
func checknosnat(w http.ResponseWriter, req *http.Request) {
|
|
url := checknosnatURL(req.URL.Query().Get("target"), req.URL.Query().Get("ips"))
|
|
resp, err := http.Get(url)
|
|
if err != nil {
|
|
w.WriteHeader(500)
|
|
fmt.Fprintf(w, "error querying %q, err: %v", url, err)
|
|
} else {
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
w.WriteHeader(500)
|
|
fmt.Fprintf(w, "error reading body of response from %q, err: %v", url, err)
|
|
} else {
|
|
// Respond the same status code and body as /checknosnat on the internal Pod
|
|
w.WriteHeader(resp.StatusCode)
|
|
w.Write(body)
|
|
}
|
|
}
|
|
resp.Body.Close()
|
|
}
|