hcc-harp/main.go at master · hcloud-classic/hcc-harp · GitHub

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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
package main

import (
	"fmt"
	"hcc/harp/action/grpc/client"
	"hcc/harp/action/grpc/server"
	"hcc/harp/lib/adaptiveip"
	"hcc/harp/lib/config"
	"hcc/harp/lib/dhcpd"
	"hcc/harp/lib/logger"
	"hcc/harp/lib/modprobe"
	"hcc/harp/lib/mysql"
	"hcc/harp/lib/pid"
	"hcc/harp/lib/syscheck"
	"innogrid.com/hcloud-classic/hcc_errors"
	"os"
	"os/signal"
	"strconv"
	"syscall"
)

func init() {
	err := syscheck.CheckRoot()
	if err != nil {
		fmt.Println(err)
		panic(err)
	}

	harpRunning, harpPID, err := pid.IsHarpRunning()
	if err != nil {
		fmt.Println(err)
		panic(err)
	}
	if harpRunning {
		fmt.Println("harp is already running. (PID: " + strconv.Itoa(harpPID) + ")")
		os.Exit(1)
	}
	err = pid.WriteHarpPID()
	if err != nil {
		_ = pid.DeleteHarpPID()
		fmt.Println(err)
		panic(err)
	}

	err = syscheck.CheckOS()
	if err != nil {
		fmt.Println("Please run harp module on the Linux machine.")
		_ = pid.DeleteHarpPID()
		panic(err)
	}

	err = logger.Init()
	if err != nil {
		hcc_errors.SetErrLogger(logger.Logger)
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "logger.Init(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}
	hcc_errors.SetErrLogger(logger.Logger)

	err = syscheck.CheckIPLink()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "syscheck.CheckIPLink(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	err = syscheck.CheckIPTABLES()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "syscheck.CheckIPTABLES(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	err = syscheck.CheckVnStat()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "syscheck.CheckVnStat(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	config.Init()

	err = client.Init()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "client.Init(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	err = mysql.Init()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "mysql.Init(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	_, err = syscheck.CheckIfaceExist(config.AdaptiveIP.ExternalIfaceName)
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "syscheck.CheckIfaceExist(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	_, err = syscheck.CheckIfaceExist(config.AdaptiveIP.InternalIfaceName)
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "syscheck.CheckIfaceExist(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	_, err = syscheck.CheckIfaceExist(config.Timpani.TimpaniTargetIfaceName)
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "syscheck.CheckIfaceExist(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	err = dhcpd.CheckLocalDHCPDConfig()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "dhcpd.CheckLocalDHCPDConfig(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	err = modprobe.LoadHarpKernelModules()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "modprobe.InitHarpModules(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}

	err = adaptiveip.LoadFirewall()
	if err != nil {
		hcc_errors.NewHccError(hcc_errors.HarpInternalInitFail, "adaptiveip.LoadFirewall(): "+err.Error()).Fatal()
		_ = pid.DeleteHarpPID()
	}
}

func end() {
	mysql.End()
	client.End()
	logger.End()
	_ = pid.DeleteHarpPID()
}

func main() {
	// Catch the exit signal
	sigChan := make(chan os.Signal)
	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
	go func() {
		<-sigChan
		end()
		fmt.Println("Exiting harp module...")
		os.Exit(0)
	}()

	server.Init()
}