aboutsummaryrefslogtreecommitdiff
path: root/goxyctl/main.go
blob: 5fbc1e86eca186e716bd2b4615ff2ac55b33ae83 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
package main

import (
	"flag"
	"io/ioutil"
	"log"
	"net/rpc"
)

var (
	rpcserver  = flag.String("server", ":http-alt", "RPC Server port")
	servername = flag.String("host", "", "ServerName")
	upstream   = flag.String("upstream", "", "Upstream URL")
	keyfile    = flag.String("key", "", "TLS Key file")
	certfile   = flag.String("cert", "", "TLS Cert file")
	remove     = flag.Bool("remove", false, "Remove route")
)

// Entry contains routing settings
type Entry struct {
	ServerName string
	Upstream   string
	Cert       []byte
	Key        []byte
}

func (e Entry) String() string {
	ret := e.ServerName + " → " + e.Upstream
	if e.Cert != nil && e.Key != nil {
		ret += " with TLS"
	}
	return ret
}

func loadCert(certFile, keyFile string) ([]byte, []byte) {
	if certFile == "" || keyFile == "" {
		return nil, nil
	}
	cert, err := ioutil.ReadFile(certFile)
	if err != nil {
		log.Fatal(err)
	}
	key, err := ioutil.ReadFile(keyFile)
	if err != nil {
		log.Fatal(err)
	}
	return cert, key
}

func send(server string, e Entry, del bool) error {
	client, err := rpc.DialHTTP("tcp", server)
	if err != nil {
		return err
	}
	defer client.Close()

	switch {
	case e.ServerName != "" && e.Upstream != "":
		log.Println("Add", e)
		return client.Call("GoXY.Add", e, nil)
	case e.ServerName != "" && del:
		log.Println("Del", e)
		return client.Call("GoXY.Del", e, nil)
	default:
		var r []Entry
		err = client.Call("GoXY.List", struct{}{}, &r)
		if err != nil {
			return err
		}
		for _, e := range r {
			log.Println(e)
		}
	}
	return nil
}

func main() {
	var e Entry
	flag.Parse()

	e.ServerName, e.Upstream = *servername, *upstream
	e.Cert, e.Key = loadCert(*certfile, *keyfile)

	if err := send(*rpcserver, e, *remove); err != nil {
		log.Fatal(err)
	}
}