aboutsummaryrefslogtreecommitdiffstats
path: root/main.go
blob: eeb40363c1e71554967ce8f97e38b0f641e79cdd (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
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
// TODO add Doc
//
package main

import (
	"fmt"
	"log"
	"os"
	"time"

	"github.com/Sirupsen/logrus"
	"github.com/codegangsta/cli"
	"github.com/iotbzh/xds-agent/lib/agent"
	"github.com/iotbzh/xds-agent/lib/syncthing"
	"github.com/iotbzh/xds-agent/lib/xdsconfig"
	"github.com/iotbzh/xds-agent/lib/xdsserver"
)

const (
	appName        = "xds-agent"
	appDescription = "X(cross) Development System Agent is a web server that allows to remotely cross build applications."
	appCopyright   = "Apache-2.0"
	appUsage       = "X(cross) Development System Agent"
)

var appAuthors = []cli.Author{
	cli.Author{Name: "Sebastien Douheret", Email: "sebastien@iot.bzh"},
}

// AppVersion is the version of this application
var AppVersion = "?.?.?"

// AppSubVersion is the git tag id added to version string
// Should be set by compilation -ldflags "-X main.AppSubVersion=xxx"
var AppSubVersion = "unknown-dev"

// xdsAgent main routine
func xdsAgent(cliCtx *cli.Context) error {
	var err error

	// Create Agent context
	ctx := agent.NewAgent(cliCtx)

	// Load config
	ctx.Config, err = xdsconfig.Init(cliCtx, ctx.Log)
	if err != nil {
		return cli.NewExitError(err, 2)
	}

	// Start local instance of Syncthing and Syncthing-notify
	ctx.SThg = st.NewSyncThing(ctx.Config, ctx.Log)

	ctx.Log.Infof("Starting Syncthing...")
	ctx.SThgCmd, err = ctx.SThg.Start()
	if err != nil {
		return cli.NewExitError(err, 2)
	}
	fmt.Printf("Syncthing started (PID %d)\n", ctx.SThgCmd.Process.Pid)

	ctx.Log.Infof("Starting Syncthing-inotify...")
	ctx.SThgInotCmd, err = ctx.SThg.StartInotify()
	if err != nil {
		return cli.NewExitError(err, 2)
	}
	fmt.Printf("Syncthing-inotify started (PID %d)\n", ctx.SThgInotCmd.Process.Pid)

	// Establish connection with local Syncthing (retry if connection fail)
	time.Sleep(3 * time.Second)
	retry := 10
	for retry > 0 {
		if err := ctx.SThg.Connect(); err == nil {
			break
		}
		ctx.Log.Infof("Establishing connection to Syncthing (retry %d/10)", retry)
		time.Sleep(time.Second)
		retry--
	}
	if err != nil || retry == 0 {
		return cli.NewExitError(err, 2)
	}

	// Retrieve Syncthing config
	id, err := ctx.SThg.IDGet()
	if err != nil {
		return cli.NewExitError(err, 2)
	}
	ctx.Log.Infof("Local Syncthing ID: %s", id)

	// Create and start Web Server
	ctx.WWWServer = xdsserver.NewServer(ctx.Config, ctx.Log)
	if err = ctx.WWWServer.Serve(); err != nil {
		log.Println(err)
		return cli.NewExitError(err, 3)
	}

	return cli.NewExitError("Program exited ", 4)
}

// main
func main() {

	// Create a new instance of the logger
	log := logrus.New()

	// Create a new App instance
	app := cli.NewApp()
	app.Name = appName
	app.Description = appDescription
	app.Usage = appUsage
	app.Version = AppVersion + " (" + AppSubVersion + ")"
	app.Authors = appAuthors
	app.Copyright = appCopyright
	app.Metadata = make(map[string]interface{})
	app.Metadata["version"] = AppVersion
	app.Metadata["git-tag"] = AppSubVersion
	app.Metadata["logger"] = log

	app.Flags = []cli.Flag{
		cli.StringFlag{
			Name:   "config, c",
			Usage:  "JSON config file to use\n\t",
			EnvVar: "XDS_CONFIGFILE",
		},
		cli.StringFlag{
			Name:   "log, l",
			Value:  "error",
			Usage:  "logging level (supported levels: panic, fatal, error, warn, info, debug)\n\t",
			EnvVar: "LOG_LEVEL",
		},
	}

	// only one action
	app.Action = xdsAgent

	app.Run(os.Args)
}