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// 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/webserver"
"github.com/iotbzh/xds-agent/lib/xdsconfig"
)
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)
maxRetry := 30
retry := maxRetry
for retry > 0 {
if err := ctx.SThg.Connect(); err == nil {
break
}
ctx.Log.Infof("Establishing connection to Syncthing (retry %d/%d)", retry, maxRetry)
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 = webserver.New(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)
}
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