func run() error {
gettext.BindTextdomain("lxd", "", nil)
gettext.Textdomain("lxd")
verbose := gnuflag.Bool("v", false, gettext.Gettext("Enables verbose mode."))
debug := gnuflag.Bool("debug", false, gettext.Gettext("Enables debug mode."))
gnuflag.StringVar(&lxd.ConfigDir, "config", lxd.ConfigDir, gettext.Gettext("Alternate config directory."))
if len(os.Args) >= 3 && os.Args[1] == "config" && os.Args[2] == "profile" {
fmt.Fprintf(os.Stderr, "`lxc config profile` is deprecated, please use `lxc profile`\n")
os.Args = append(os.Args[:1], os.Args[2:]...)
}
if len(os.Args) == 2 && (os.Args[1] == "-h" || os.Args[1] == "--help") {
os.Args[1] = "help"
}
if len(os.Args) == 2 && os.Args[1] == "--version" {
os.Args[1] = "version"
}
if len(os.Args) < 2 {
commands["help"].run(nil, nil)
os.Exit(1)
}
name := os.Args[1]
cmd, ok := commands[name]
if !ok {
fmt.Fprintf(os.Stderr, gettext.Gettext("error: unknown command: %s\n"), name)
commands["help"].run(nil, nil)
os.Exit(1)
}
cmd.flags()
gnuflag.Usage = func() {
fmt.Fprintf(os.Stderr, gettext.Gettext("Usage: %s\n\nOptions:\n\n"), strings.TrimSpace(cmd.usage()))
gnuflag.PrintDefaults()
}
os.Args = os.Args[1:]
gnuflag.Parse(true)
if *verbose || *debug {
shared.SetLogger(log.New(os.Stderr, "", log.LstdFlags))
shared.SetDebug(*debug)
}
config, err := lxd.LoadConfig()
if err != nil {
return err
}
certf := lxd.ConfigPath("client.crt")
keyf := lxd.ConfigPath("client.key")
if os.Args[0] != "help" && os.Args[0] != "version" && (!shared.PathExists(certf) || !shared.PathExists(keyf)) {
fmt.Fprintf(os.Stderr, gettext.Gettext("Generating a client certificate. This may take a minute...\n"))
err = shared.FindOrGenCert(certf, keyf)
if err != nil {
return err
}
fmt.Fprintf(os.Stderr, gettext.Gettext("If this is your first run, you will need to import images using the 'lxd-images' script.\n"))
fmt.Fprintf(os.Stderr, gettext.Gettext("For example: 'lxd-images import lxc ubuntu trusty amd64 --alias ubuntu/trusty'.\n"))
}
err = cmd.run(config, gnuflag.Args())
if err == errArgs {
fmt.Fprintf(os.Stderr, gettext.Gettext("error: %v\n%s"), err, cmd.usage())
os.Exit(1)
}
return err
}
func run() error {
if len(os.Args) > 1 {
switch os.Args[1] {
case "forkstart":
return startContainer(os.Args[1:])
case "forkmigrate":
return migration.MigrateContainer(os.Args[1:])
/*
case "forkputfile" and "forkgetfile" handled specially in copyfile.go
*/
}
}
gnuflag.Usage = func() {
fmt.Printf("Usage: lxd [options]\n\nOptions:\n")
gnuflag.PrintDefaults()
}
gnuflag.Parse(true)
if *help {
// The user asked for help via --help, so we shouldn't print to
// stderr.
gnuflag.SetOut(os.Stdout)
gnuflag.Usage()
return nil
}
if *version {
fmt.Println(shared.Version)
return nil
}
if *verbose || *debug {
shared.SetLogger(log.New(os.Stderr, "", log.LstdFlags))
shared.SetDebug(*debug)
}
if gnuflag.NArg() != 0 {
gnuflag.Usage()
return fmt.Errorf("Unknown arguments")
}
if *cpuProfile != "" {
f, err := os.Create(*cpuProfile)
if err != nil {
fmt.Printf("Error opening cpu profile file: %s\n", err)
return nil
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
if *memProfile != "" {
go memProfiler()
}
needed_programs := []string{"setfacl", "rsync", "tar", "xz"}
for _, p := range needed_programs {
_, err := exec.LookPath(p)
if err != nil {
return err
}
}
if *printGoroutines > 0 {
go func() {
for {
time.Sleep(time.Duration(*printGoroutines) * time.Second)
shared.PrintStack()
}
}()
}
d, err := StartDaemon(*listenAddr)
if err != nil {
if d != nil && d.db != nil {
d.db.Close()
}
return err
}
defer d.db.Close()
var ret error
var wg sync.WaitGroup
wg.Add(1)
go func() {
ch := make(chan os.Signal)
signal.Notify(ch, syscall.SIGPWR)
sig := <-ch
shared.Debugf("Received '%s signal', shutting down containers.\n", sig)
ret = d.Stop()
containersShutdown(d)
wg.Done()
}()
go func() {
ch := make(chan os.Signal)
signal.Notify(ch, syscall.SIGINT)
signal.Notify(ch, syscall.SIGQUIT)
signal.Notify(ch, syscall.SIGTERM)
sig := <-ch
shared.Debugf("Received '%s signal', exiting.\n", sig)
ret = d.Stop()
wg.Done()
}()
wg.Wait()
return ret
}