func (c *RemotePullCommand) Run(args []string) int {
args = c.Meta.process(args, false)
cmdFlags := flag.NewFlagSet("pull", flag.ContinueOnError)
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
}
// Read out our state
s, err := c.State()
if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to read state: %s", err))
return 1
}
localState := s.State()
// If remote state isn't enabled, it is a problem.
if !localState.IsRemote() {
c.Ui.Error("Remote state not enabled!")
return 1
}
// We need the CacheState structure in order to do anything
var cache *state.CacheState
if bs, ok := s.(*state.BackupState); ok {
if cs, ok := bs.Real.(*state.CacheState); ok {
cache = cs
}
}
if cache == nil {
c.Ui.Error(fmt.Sprintf(
"Failed to extract internal CacheState from remote state.\n" +
"This is an internal error, please report it as a bug."))
return 1
}
// Refresh the state
if err := cache.RefreshState(); err != nil {
c.Ui.Error(fmt.Sprintf(
"Failed to refresh from remote state: %s", err))
return 1
}
// Use an error exit code if the update was not a success
change := cache.RefreshResult()
if !change.SuccessfulPull() {
c.Ui.Error(fmt.Sprintf("%s", change))
return 1
} else {
c.Ui.Output(c.Colorize().Color(fmt.Sprintf(
"[reset][bold][green]%s", change)))
}
return 0
}
// State returns the proper state.State implementation to represent the
// current environment.
//
// localPath is the path to where state would be if stored locally.
// dataDir is the path to the local data directory where the remote state
// cache would be stored.
func State(opts *StateOpts) (*StateResult, error) {
result := new(StateResult)
// Get the remote state cache path
if opts.RemotePath != "" {
result.RemotePath = opts.RemotePath
var remote *state.CacheState
if opts.RemoteCacheOnly {
// Setup the in-memory state
ls := &state.LocalState{Path: opts.RemotePath}
if err := ls.RefreshState(); err != nil {
return nil, err
}
is := &state.InmemState{}
is.WriteState(ls.State())
// Setupt he remote state, cache-only, and refresh it so that
// we have access to the state right away.
remote = &state.CacheState{
Cache: ls,
Durable: is,
}
if err := remote.RefreshState(); err != nil {
return nil, err
}
} else {
if _, err := os.Stat(opts.RemotePath); err == nil {
// We have a remote state, initialize that.
remote, err = remoteStateFromPath(
opts.RemotePath,
opts.RemoteRefresh)
if err != nil {
return nil, err
}
}
}
if remote != nil {
result.State = remote
result.StatePath = opts.RemotePath
result.Remote = remote
}
}
// Do we have a local state?
if opts.LocalPath != "" {
local := &state.LocalState{
Path: opts.LocalPath,
PathOut: opts.LocalPathOut,
}
// Always store it in the result even if we're not using it
result.Local = local
result.LocalPath = local.Path
if local.PathOut != "" {
result.LocalPath = local.PathOut
}
err := local.RefreshState()
if err == nil {
if result.State != nil && !result.State.State().Empty() {
if !local.State().Empty() {
// We already have a remote state... that is an error.
return nil, fmt.Errorf(
"Remote state found, but state file '%s' also present.",
opts.LocalPath)
}
// Empty state
local = nil
}
}
if err != nil {
return nil, errwrap.Wrapf(
"Error reading local state: {{err}}", err)
}
if local != nil {
result.State = local
result.StatePath = opts.LocalPath
if opts.LocalPathOut != "" {
result.StatePath = opts.LocalPathOut
}
}
}
// If we have a result, make sure to back it up
if result.State != nil {
backupPath := result.StatePath + DefaultBackupExtension
if opts.BackupPath != "" {
backupPath = opts.BackupPath
}
if backupPath != "-" {
result.State = &state.BackupState{
Real: result.State,
Path: backupPath,
}
}
}
// Return whatever state we have
return result, nil
}