// TrackFile will track an individual file, meaning, it will move the original
// file to either the files or backup folder. It will the create a symlink of
// the file in the original location. `name` will be used as the name of the
// folder and key in the config file. `fullPath` has to be the absolute path
// to the file to be tracked.
//
// TrackFile can be called from two contexes:
// 1. From SyncFiles, it will read all the tracked files from the config and
// make track files if necessary.
// 2. From CommandAdd, this will add a new file for tracking
//
// TrackFile will make a distinction between a new file and a file that is
// already been tracked:
// 1. TrackFile can't find the symlink, but the file is present in the
// dot_path (the folder that holds all the original files). Then we need to
// relink it, thus creating a symlink at the correct location. This happens
// we you run dot on a new 'additional machine'.
// 2. TrackFile can't find the symlink, and the file is also not present in
// the dot_path folder. This will mean that it is a new file were are going
// to track. So we copy the file to the files folder, create a symlink, and
// add an entry to the config file.
func TrackFile(name string, fullPath string, push bool) {
// Base
base := path.Base(fullPath)
// get relative path
relPath, err := GetRelativePath(fullPath)
if err != nil {
PrintBodyError(err.Error())
return
}
// check if path is present
_, err = os.Stat(fullPath)
if err != nil {
message := fmt.Sprintf("not able to find: %s", fullPath)
PrintBodyError(message)
return
}
// check if path is already symlinked
s, err := os.Lstat(fullPath)
if s.Mode()&os.ModeSymlink == os.ModeSymlink {
message := fmt.Sprintf("%s is already symlinked, skipping ...", name)
PrintBody(message)
return
}
// load config
c, err := NewConfig(PathDotConfig)
if err != nil {
PrintBodyError("not able to find .dotconfig")
return
}
repoPath := fmt.Sprintf("%s%s/files/%s/", HomeDir(), c.DotPath, name)
if _, err := os.Stat(repoPath); err == nil {
// no symlink found, already in repo => additional machine
message := fmt.Sprintf("Symlinking: %s", name)
PrintBody(message)
// put in backup folder, set named folder based on `name`, e.g.:
// `/home/erroneousboat/dotfiles/backup/[name]/[base]`
dst := fmt.Sprintf("%s%s/backup/%s/%s", HomeDir(), c.DotPath, name, base)
err = MakeAndMoveToDir(fullPath, dst)
if err != nil {
log.Fatal(err)
}
// create symlink (os.Symlink(oldname, newname))
dst = fmt.Sprintf("%s%s/files/%s/%s", HomeDir(), c.DotPath, name, base)
err = os.Symlink(dst, fullPath)
if err != nil {
log.Fatal(err)
}
} else {
// no symlink found, not in repo => new entry
message := fmt.Sprintf("Symlinking: %s", name)
PrintBody(message)
// put in files folder, set named folder based on `name`, e.g.:
// `/home/erroneousboat/dotfiles/files/[name]/[base]`
dst := fmt.Sprintf("%s%s/files/%s/%s", HomeDir(), c.DotPath, name, base)
err = MakeAndMoveToDir(fullPath, dst)
if err != nil {
log.Fatal(err)
}
// create symlink (os.Symlink(oldname, newname))
err = os.Symlink(dst, fullPath)
if err != nil {
log.Fatal(err)
}
// create entry in .dotconfig file
c.Files[name] = relPath
c.Save()
// push changes to repository
if push {
GitCommitPush(name, "add")
}
}
}
func Main() {
userset := flag.NewFlagSet("fleet", flag.ExitOnError)
printVersion := userset.Bool("version", false, "Print the version and exit")
cfgPath := userset.String("config", "", fmt.Sprintf("Path to config file. Fleet will look for a config at %s by default.", DefaultConfigFile))
userset.Usage = func() {
fmt.Fprintf(os.Stderr, "%s\nUsage of %s:\n", FleetdDescription, os.Args[0])
userset.PrintDefaults()
}
err := userset.Parse(os.Args[1:])
if err != nil {
userset.Usage()
os.Exit(1)
}
args := userset.Args()
if len(args) > 0 {
// support `fleetd version` the same as `fleetd --version`
if args[0] == "version" {
*printVersion = true
} else {
fmt.Fprintf(os.Stderr, "%s takes no arguments. Did you mean to invoke fleetctl instead?\n", os.Args[0])
userset.Usage()
os.Exit(1)
}
}
if *printVersion {
fmt.Println("fleetd version", version.Version)
os.Exit(0)
}
log.Infof("Starting fleetd version %v", version.Version)
cfgset := flag.NewFlagSet("fleet", flag.ExitOnError)
cfgset.Int("verbosity", 0, "Logging level")
cfgset.Var(&pkg.StringSlice{"http://127.0.0.1:2379", "http://127.0.0.1:4001"}, "etcd_servers", "List of etcd endpoints")
cfgset.String("etcd_username", "", "username for secure etcd communication")
cfgset.String("etcd_password", "", "password for secure etcd communication")
cfgset.String("etcd_keyfile", "", "SSL key file used to secure etcd communication")
cfgset.String("etcd_certfile", "", "SSL certification file used to secure etcd communication")
cfgset.String("etcd_cafile", "", "SSL Certificate Authority file used to secure etcd communication")
cfgset.String("etcd_key_prefix", registry.DefaultKeyPrefix, "Keyspace for fleet data in etcd")
cfgset.Float64("etcd_request_timeout", 1.0, "Amount of time in seconds to allow a single etcd request before considering it failed.")
cfgset.Float64("engine_reconcile_interval", 2.0, "Interval at which the engine should reconcile the cluster schedule in etcd.")
cfgset.String("public_ip", "", "IP address that fleet machine should publish")
cfgset.String("metadata", "", "List of key-value metadata to assign to the fleet machine")
cfgset.String("agent_ttl", agent.DefaultTTL, "TTL in seconds of fleet machine state in etcd")
cfgset.String("units_directory", "/run/fleet/units/", "Path to the fleet units directory")
cfgset.Bool("systemd_user", false, "When true use systemd --user)")
cfgset.Int("token_limit", 100, "Maximum number of entries per page returned from API requests")
cfgset.Bool("enable_grpc", false, "When possible, uses grpc to communicate between engine and agent")
cfgset.Bool("disable_engine", false, "Disable the engine entirely, use with care")
cfgset.Bool("disable_watches", false, "Disable the use of etcd watches. Increases scheduling latency")
cfgset.Bool("verify_units", false, "DEPRECATED - This option is ignored")
cfgset.String("authorized_keys_file", "", "DEPRECATED - This option is ignored")
globalconf.Register("", cfgset)
cfg, err := getConfig(cfgset, *cfgPath)
if err != nil {
log.Fatal(err)
}
log.Debugf("Creating Server")
srv, err := server.New(*cfg, nil)
if err != nil {
log.Fatalf("Failed creating Server: %v", err)
}
srv.Run()
srvMutex := sync.Mutex{}
reconfigure := func() {
log.Infof("Reloading configuration from %s", *cfgPath)
srvMutex.Lock()
defer srvMutex.Unlock()
cfg, err := getConfig(cfgset, *cfgPath)
if err != nil {
log.Fatal(err)
}
log.Infof("Restarting server components")
srv.SetReconfigServer(true)
// Get Server.listeners[] to keep it for a new server,
// before killing the old server.
oldListeners := srv.GetApiServerListeners()
srv.Kill()
// The new server takes the original listeners.
srv, err = server.New(*cfg, oldListeners)
if err != nil {
log.Fatal(err)
}
srv.Run()
srv.SetReconfigServer(false)
}
shutdown := func() {
log.Infof("Gracefully shutting down")
srvMutex.Lock()
defer srvMutex.Unlock()
srv.Kill()
srv.Purge()
os.Exit(0)
}
writeState := func() {
log.Infof("Dumping server state")
srvMutex.Lock()
defer srvMutex.Unlock()
encoded, err := json.Marshal(srv)
if err != nil {
log.Errorf("Failed to dump server state: %v", err)
return
}
if _, err := os.Stdout.Write(encoded); err != nil {
log.Errorf("Failed to dump server state: %v", err)
return
}
os.Stdout.Write([]byte("\n"))
log.Debugf("Finished dumping server state")
}
signals := map[os.Signal]func(){
syscall.SIGHUP: reconfigure,
syscall.SIGTERM: shutdown,
syscall.SIGINT: shutdown,
syscall.SIGUSR1: writeState,
}
listenForSignals(signals)
}
// UntrackFile will remove a file from tracking. `name` will be the key
// in the config file that points to the initial location of the file
func UntrackFile(name string, push bool) {
// open config file
c, err := NewConfig(HomeDir() + "/" + ConfigFileName)
if err != nil {
PrintBodyError("not able to find .dotconfig")
return
}
// check if `name` is present in c.Files
path := c.Files[name]
if path == "" {
message := fmt.Sprintf("'%s' is not being tracked. Get the list of "+
"tracked files with `dot list`", name)
PrintBodyError(message)
return
}
// check if path (the symlink) is present
pathSymlink := fmt.Sprintf("%s%s", HomeDir(), path)
f, err := os.Lstat(pathSymlink)
if err != nil {
message := fmt.Sprintf("not able to find: %s", path)
PrintBodyError(message)
return
}
// check if path is symlink
if f.Mode()&os.ModeSymlink != os.ModeSymlink {
message := fmt.Sprintf("%s is not a symlink", path)
PrintBodyError(message)
return
}
// check if src is present
src := fmt.Sprintf("%s%s/files/%s", HomeDir(), c.DotPath, name)
if _, err = os.Stat(src); err != nil {
message := fmt.Sprintf("not able to find %s", src)
PrintBodyError(message)
return
}
// remove symlink
err = os.Remove(pathSymlink)
if err != nil {
message := fmt.Sprintf("not able to remove %s", pathSymlink)
PrintBodyError(message)
return
}
// move the file or directory
dst := fmt.Sprintf("%s%s", HomeDir(), path)
message := fmt.Sprintf("Moving %s back to %s", name, dst)
PrintBody(message)
err = MakeAndMoveToDir(src, dst)
if err != nil {
log.Fatal(err)
}
// remove entry from config and save config
delete(c.Files, name)
c.Save()
// push changes to repository
if push {
GitCommitPush(name, "rm")
}
}