58 lines
1.0 KiB
Go
58 lines
1.0 KiB
Go
package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"log"
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"net"
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"net/http"
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)
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var (
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port = flag.Int("port", 8000, "The server port")
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)
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type admissionRequest struct {
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Addr string `json:"addr"`
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}
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type admissionResponse struct {
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OK bool `json:"ok"`
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}
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func main() {
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flag.Parse()
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lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port))
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if err != nil {
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log.Fatalf("failed to listen: %v", err)
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}
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log.Printf("server listening at %v", lis.Addr())
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http.HandleFunc("/admission", func(w http.ResponseWriter, r *http.Request) {
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rb := admissionRequest{}
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if err := json.NewDecoder(r.Body).Decode(&rb); err != nil {
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log.Println(err)
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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resp := admissionResponse{}
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host := rb.Addr
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if v, _, _ := net.SplitHostPort(host); v != "" {
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host = v
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}
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if host == "127.0.0.1" {
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resp.OK = true
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}
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log.Printf("admission: %s, %v", rb.Addr, resp.OK)
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json.NewEncoder(w).Encode(resp)
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})
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if err := http.Serve(lis, nil); err != nil {
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log.Fatalf("failed to serve: %v", err)
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}
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}
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