// Main sends on up when it's running, and shuts down when it receives from down.
func Main(up chan<- struct{}, down <-chan struct{}) {
flag.Parse()
if *flagVersion {
fmt.Fprintf(os.Stderr, "camlistored version: %s\nGo version: %s (%s/%s)\n",
buildinfo.Version(), runtime.Version(), runtime.GOOS, runtime.GOARCH)
return
}
if legalprint.MaybePrint(os.Stderr) {
return
}
if env.OnGCE() {
log.SetOutput(gce.LogWriter())
}
if *flagReindex {
index.SetImpendingReindex()
}
log.Printf("Starting camlistored version %s; Go %s (%s/%s)", buildinfo.Version(), runtime.Version(),
runtime.GOOS, runtime.GOARCH)
shutdownc := make(chan io.Closer, 1) // receives io.Closer to cleanly shut down
go handleSignals(shutdownc)
// In case we're running in a Docker container with no
// filesytem from which to load the root CAs, this
// conditionally installs a static set if necessary. We do
// this before we load the config file, which might come from
// an https URL.
httputil.InstallCerts()
config, isNewConfig, err := loadConfig(*flagConfigFile)
if err != nil {
exitf("Error loading config file: %v", err)
}
ws := webserver.New()
listen, baseURL := listenAndBaseURL(config)
hostname, err := certHostname(listen, baseURL)
if err != nil {
exitf("Bad baseURL or listen address: %v", err)
}
setupTLS(ws, config, hostname)
err = ws.Listen(listen)
if err != nil {
exitf("Listen: %v", err)
}
if baseURL == "" {
baseURL = ws.ListenURL()
}
shutdownCloser, err := config.InstallHandlers(ws, baseURL, *flagReindex, nil)
if err != nil {
exitf("Error parsing config: %v", err)
}
shutdownc <- shutdownCloser
urlToOpen := baseURL
if !isNewConfig {
// user may like to configure the server at the initial startup,
// open UI if this is not the first run with a new config file.
urlToOpen += config.UIPath
}
if *flagOpenBrowser {
go osutil.OpenURL(urlToOpen)
}
go ws.Serve()
if flagPollParent {
osutil.DieOnParentDeath()
}
if err := config.StartApps(); err != nil {
exitf("StartApps: %v", err)
}
for appName, appURL := range config.AppURL() {
addr, err := netutil.HostPort(appURL)
if err != nil {
log.Printf("Could not get app %v address: %v", appName, err)
continue
}
if err := netutil.AwaitReachable(addr, 5*time.Second); err != nil {
log.Printf("Could not reach app %v: %v", appName, err)
}
}
log.Printf("Available on %s", urlToOpen)
if env.OnGCE() && strings.HasPrefix(baseURL, "https://") {
go redirectFromHTTP(baseURL)
}
// Block forever, except during tests.
up <- struct{}{}
<-down
osExit(0)
}
func main() {
client.AddFlags()
flag.Parse()
if *flagVersion {
fmt.Fprintf(os.Stderr, "camget version: %s\n", buildinfo.Version())
return
}
if legalprint.MaybePrint(os.Stderr) {
return
}
if *flagGraph && flag.NArg() != 1 {
log.Fatalf("The --graph option requires exactly one parameter.")
}
var cl *client.Client
var items []blob.Ref
if *flagShared != "" {
if client.ExplicitServer() != "" {
log.Fatal("Can't use --shared with an explicit blobserver; blobserver is implicit from the --shared URL.")
}
if flag.NArg() != 0 {
log.Fatal("No arguments permitted when using --shared")
}
cl1, target, err := client.NewFromShareRoot(*flagShared,
client.OptionInsecure(*flagInsecureTLS),
client.OptionTrustedCert(*flagTrustedCert))
if err != nil {
log.Fatal(err)
}
cl = cl1
items = append(items, target)
} else {
if *flagTrustedCert != "" {
log.Fatal("Can't use --cert without --shared.")
}
cl = client.NewOrFail()
for n := 0; n < flag.NArg(); n++ {
arg := flag.Arg(n)
br, ok := blob.Parse(arg)
if !ok {
log.Fatalf("Failed to parse argument %q as a blobref.", arg)
}
items = append(items, br)
}
}
cl.InsecureTLS = *flagInsecureTLS
tr := cl.TransportForConfig(&client.TransportConfig{
Verbose: *flagHTTP,
})
httpStats, _ := tr.(*httputil.StatsTransport)
cl.SetHTTPClient(&http.Client{Transport: tr})
diskCacheFetcher, err := cacher.NewDiskCache(cl)
if err != nil {
log.Fatalf("Error setting up local disk cache: %v", err)
}
defer diskCacheFetcher.Clean()
if *flagVerbose {
log.Printf("Using temp blob cache directory %s", diskCacheFetcher.Root)
}
for _, br := range items {
if *flagGraph {
printGraph(diskCacheFetcher, br)
return
}
if *flagCheck {
// TODO: do HEAD requests checking if the blobs exists.
log.Fatal("not implemented")
return
}
if *flagOutput == "-" {
var rc io.ReadCloser
var err error
if *flagContents {
rc, err = schema.NewFileReader(diskCacheFetcher, br)
if err == nil {
rc.(*schema.FileReader).LoadAllChunks()
}
} else {
rc, err = fetch(diskCacheFetcher, br)
}
if err != nil {
log.Fatal(err)
}
defer rc.Close()
if _, err := io.Copy(os.Stdout, rc); err != nil {
log.Fatalf("Failed reading %q: %v", br, err)
}
} else {
if err := smartFetch(diskCacheFetcher, *flagOutput, br); err != nil {
log.Fatal(err)
}
}
}
if *flagVerbose {
log.Printf("HTTP requests: %d\n", httpStats.Requests())
}
}
// Main is meant to be the core of a command that has
// subcommands (modes), such as camput or camtool.
func Main() {
registerFlagOnce.Do(ExtraFlagRegistration)
if setCommandLineOutput != nil {
setCommandLineOutput(Stderr)
}
flag.Parse()
CheckCwd()
if err := CheckModtime(); err != nil {
log.Print(err)
Exit(1)
}
args := flag.Args()
if *FlagVersion {
fmt.Fprintf(Stderr, "%s version: %s\n", os.Args[0], buildinfo.Version())
return
}
if *FlagHelp {
usage("")
}
if legalprint.MaybePrint(Stderr) {
return
}
if len(args) == 0 {
usage("No mode given.")
}
mode := args[0]
cmd, ok := modeCommand[mode]
if !ok {
usage(fmt.Sprintf("Unknown mode %q", mode))
}
cmdFlags := modeFlags[mode]
cmdFlags.SetOutput(Stderr)
err := cmdFlags.Parse(args[1:])
if err != nil {
err = ErrUsage
} else {
if *wantHelp[mode] {
help(mode)
return
}
err = cmd.RunCommand(cmdFlags.Args())
}
if ue, isUsage := err.(UsageError); isUsage {
if isUsage {
Errorf("%s\n", ue)
}
cmd.Usage()
Errorf("\nGlobal options:\n")
flag.PrintDefaults()
if hasFlags(cmdFlags) {
Errorf("\nMode-specific options for mode %q:\n", mode)
cmdFlags.PrintDefaults()
}
Exit(1)
}
PreExit()
if err != nil {
if !ExitWithFailure {
// because it was already logged if ExitWithFailure
Errorf("Error: %v\n", err)
}
Exit(2)
}
}
func main() {
var conn *fuse.Conn
// Scans the arg list and sets up flags
client.AddFlags()
flag.Usage = usage
flag.Parse()
if legalprint.MaybePrint(os.Stderr) {
return
}
narg := flag.NArg()
if narg > 2 {
usage()
}
var mountPoint string
var err error
if narg > 0 {
mountPoint = flag.Arg(0)
} else {
mountPoint, err = ioutil.TempDir("", "cammount")
if err != nil {
log.Fatal(err)
}
log.Printf("No mount point given. Using: %s", mountPoint)
defer os.Remove(mountPoint)
}
errorf := func(msg string, args ...interface{}) {
fmt.Fprintf(os.Stderr, msg, args...)
fmt.Fprint(os.Stderr, "\n")
usage()
}
var (
cl *client.Client
root blob.Ref // nil if only one arg
camfs *fs.CamliFileSystem
)
if narg == 2 {
rootArg := flag.Arg(1)
// not trying very hard since NewFromShareRoot will do it better with a regex
if strings.HasPrefix(rootArg, "http://") ||
strings.HasPrefix(rootArg, "https://") {
if client.ExplicitServer() != "" {
errorf("Can't use an explicit blobserver with a share URL; the blobserver is implicit from the share URL.")
}
var err error
cl, root, err = client.NewFromShareRoot(rootArg)
if err != nil {
log.Fatal(err)
}
} else {
cl = client.NewOrFail() // automatic from flags
cl.SetHTTPClient(&http.Client{Transport: cl.TransportForConfig(nil)})
var ok bool
root, ok = blob.Parse(rootArg)
if !ok {
// not a blobref, check for root name instead
req := &search.WithAttrRequest{N: 1, Attr: "camliRoot", Value: rootArg}
wres, err := cl.GetPermanodesWithAttr(req)
if err != nil {
log.Fatal("could not query search")
}
if wres.WithAttr != nil {
root = wres.WithAttr[0].Permanode
} else {
log.Fatalf("root specified is not a blobref or name of a root: %q\n", rootArg)
}
}
}
} else {
cl = client.NewOrFail() // automatic from flags
cl.SetHTTPClient(&http.Client{Transport: cl.TransportForConfig(nil)})
}
diskCacheFetcher, err := cacher.NewDiskCache(cl)
if err != nil {
log.Fatalf("Error setting up local disk cache: %v", err)
}
defer diskCacheFetcher.Clean()
if root.Valid() {
var err error
camfs, err = fs.NewRootedCamliFileSystem(cl, diskCacheFetcher, root)
if err != nil {
log.Fatalf("Error creating root with %v: %v", root, err)
}
} else {
camfs = fs.NewDefaultCamliFileSystem(cl, diskCacheFetcher)
}
if *debug {
fuse.Debug = func(msg interface{}) { log.Print(msg) }
// TODO: set fs's logger
}
// This doesn't appear to work on OS X:
sigc := make(chan os.Signal, 1)
conn, err = fuse.Mount(mountPoint, fuse.VolumeName(filepath.Base(mountPoint)))
if err != nil {
if err.Error() == "cannot find load_fusefs" && runtime.GOOS == "darwin" {
log.Fatal("FUSE not available; install from http://osxfuse.github.io/")
}
log.Fatalf("Mount: %v", err)
}
xtermDone := make(chan bool, 1)
if *xterm {
cmd := exec.Command("xterm")
cmd.Dir = mountPoint
if err := cmd.Start(); err != nil {
log.Printf("Error starting xterm: %v", err)
} else {
go func() {
cmd.Wait()
xtermDone <- true
}()
defer cmd.Process.Kill()
}
}
if *open {
if runtime.GOOS == "darwin" {
go exec.Command("open", mountPoint).Run()
}
}
if *term {
if runtime.GOOS == "darwin" {
if osutil.DirExists("/Applications/iTerm.app/") {
go exec.Command("open", "-a", "iTerm", mountPoint).Run()
} else {
log.Printf("TODO: iTerm not installed. Figure out how to open with Terminal.app instead.")
}
}
}
signal.Notify(sigc, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
doneServe := make(chan error, 1)
go func() {
doneServe <- fusefs.Serve(conn, camfs)
}()
quitKey := make(chan bool, 1)
go awaitQuitKey(quitKey)
select {
case err := <-doneServe:
log.Printf("conn.Serve returned %v", err)
// check if the mount process has an error to report
<-conn.Ready
if err := conn.MountError; err != nil {
log.Printf("conn.MountError: %v", err)
}
case sig := <-sigc:
log.Printf("Signal %s received, shutting down.", sig)
case <-quitKey:
log.Printf("Quit key pressed. Shutting down.")
case <-xtermDone:
log.Printf("xterm done")
}
time.AfterFunc(2*time.Second, func() {
os.Exit(1)
})
log.Printf("Unmounting...")
err = fs.Unmount(mountPoint)
log.Printf("Unmount = %v", err)
log.Printf("cammount FUSE process ending.")
}
