func main() {
var configFile string
var ca string
var showVersion bool
var shouldUpdate bool
var checkUpdate bool
flag.StringVar(&configFile, "c", "", "Configuration file.")
flag.StringVar(&ca, "ca", "", "Root CA certificate.")
flag.BoolVar(&showVersion, "version", false, "Show version information.")
flag.BoolVar(&shouldUpdate, "update", false, "Update the binary.")
flag.BoolVar(&checkUpdate, "checkupdate", false, "Check for updates.")
flag.Parse()
printHelp := func() {
fmt.Fprint(os.Stderr, usage)
}
if showVersion {
if !version.PrintVersionInformation(os.Stdout) {
os.Exit(1)
}
return
}
if checkUpdate {
updates.CheckForUpdates(BinaryBaseName)
return
}
if shouldUpdate {
updates.UpdateApp(BinaryBaseName)
return
}
if configFile == "" {
fmt.Fprintln(os.Stderr, "fatal: flag: missing -c option")
fmt.Fprintln(os.Stderr, "")
printHelp()
os.Exit(1)
}
env := &environment{}
if ca != "" {
var config tls.Config
pem, err := ioutil.ReadFile(ca)
if err != nil {
fmt.Fprintf(os.Stderr, "fatal: read %v: %v\n", ca, err)
os.Exit(1)
}
config.RootCAs = x509.NewCertPool()
if !config.RootCAs.AppendCertsFromPEM(pem) {
log.Println("warning: x509: could not use PEM in", ca)
}
env.Server.Session.Client = &http.Client{
Transport: &http.Transport{
TLSClientConfig: &config,
},
}
}
// Parse configuration file.
fh, err := os.Open(configFile)
if err != nil {
log.Fatal(err)
}
defer fh.Close()
if err := env.Configuration.ParseConfiguration(fh); err != nil {
fmt.Fprintln(os.Stderr, "fatal: could not parse configuration file",
configFile+":", err)
os.Exit(1)
}
// Configure server behaviour
env.Server.Configuration = env.Configuration
for {
// Register the client.
if initialized, err, recoverable := register(env); err != nil {
if !recoverable {
log.Fatal("Could not register:", err)
} else {
log.Println("Could not register:", err)
}
} else {
// Registration was successful, constantly update now.
log.Println("Successfully registered:", initialized)
started := make(map[string]widgets.Widget)
for {
if err := update(env, initialized, started); err != nil {
log.Println("Could not update widgets:", err)
break
}
}
}
// Don't overload
t := 5 * time.Second
log.Println("Reregistering in", t)
<-time.After(t)
}
}
func main() {
var configFile string
var listenAddr string
var debug bool
var showVersion bool
var shouldUpdate bool
var checkUpdate bool
flag.StringVar(&configFile, "c", "", "Configuration file.")
flag.StringVar(&listenAddr, "listen", ":8050", "Listen address.")
flag.BoolVar(&debug, "debug", false, "Debug gin router.")
flag.BoolVar(&showVersion, "version", false, "Show version information.")
flag.BoolVar(&shouldUpdate, "update", false, "Update the binary.")
flag.BoolVar(&checkUpdate, "checkupdate", false, "Check for updates.")
flag.Parse()
printHelp := func() {
fmt.Fprint(os.Stderr, usage)
}
if showVersion {
if !version.PrintVersionInformation(os.Stdout) {
os.Exit(1)
}
return
}
if checkUpdate {
updates.CheckForUpdates(BinaryBaseName)
return
}
if shouldUpdate {
updates.UpdateApp(BinaryBaseName)
return
}
if configFile == "" {
fmt.Fprintln(os.Stderr, "fatal: flag: missing -c option")
fmt.Fprintln(os.Stderr, "")
printHelp()
os.Exit(1)
}
// Setup configuration
config := server.Configuration{}
if err := config.ParseConfiguration(configFile); err != nil {
fmt.Fprintln(os.Stderr, "fatal: could not parse configuration file ",
configFile+":", err)
os.Exit(1)
}
if !debug {
gin.SetMode(gin.ReleaseMode)
}
router := gin.Default()
// Setup user authenticatuer
userAuth := server.UserAuthenticator{
Configuration: config,
}
// Create a server
serv := server.NewServer(config)
// Install static api
staticApi := static.Static{
UserAuthenticator: userAuth,
}
if err := staticApi.Install(router); err != nil {
log.Println("We could not serve the static files. If not already")
log.Println("done, set the HTML_ROOT environment variable to the")
log.Println("of the static files.")
log.Fatal("fatal: could not serve static files:", err)
}
// Install rest api
restApi := api.API{
Configuration: config,
Server: serv,
UserAuthenticator: userAuth,
Scheduler: scheduler.New(config),
}
if err := restApi.Install(router); err != nil {
log.Fatal("fatal: could not serve API:", err)
}
router.Run(listenAddr)
}