// TODO: skip errors flag
func RmData(do *definitions.Do) (err error) {
	if len(do.Operations.Args) == 0 {
		do.Operations.Args = []string{do.Name}
	}
	for _, name := range do.Operations.Args {
		do.Name = name
		if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
			log.WithField("=>", do.Name).Info("Removing data container")

			srv := definitions.BlankServiceDefinition()
			srv.Operations.SrvContainerName = util.ContainersName("data", do.Name, do.Operations.ContainerNumber)

			if err = perform.DockerRemove(srv.Service, srv.Operations, false, do.Volumes); err != nil {
				log.Errorf("Error removing %s: %v", do.Name, err)
				return err
			}

		} else {
			err = fmt.Errorf("I cannot find that data container for %s. Please check the data container name you sent me.", do.Name)
			log.Error(err)
			return err
		}

		if do.RmHF {
			log.WithField("=>", do.Name).Warn("Removing host directory")
			if err = os.RemoveAll(filepath.Join(DataContainersPath, do.Name)); err != nil {
				return err
			}
		}
	}

	do.Result = "success"
	return err
}

func RmData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		logger.Infoln("Removing data container " + do.Name)

		srv := definitions.BlankServiceDefinition()
		srv.Operations.SrvContainerName = util.ContainersName("data", do.Name, do.Operations.ContainerNumber)

		err := perform.DockerRemove(srv.Service, srv.Operations, false)
		if err != nil {
			return err
		}

	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}

	if do.RmHF {
		logger.Println("Removing host folder " + do.Name)
		err := os.RemoveAll(path.Join(DataContainersPath, do.Name))
		if err != nil {
			return err
		}
	}

	do.Result = "success"
	return nil
}

// ImportData does what it says. It imports from a host's Source to a Dest
// in a data container. It returns an error.
//
//  do.Name                       - name of the data container to use (required)
//  do.Operations.ContainerNumber - container number (optional)
//  do.Source                     - directory which should be imported (required)
//  do.Destination                - directory to _unload_ the payload into (required)
//
func ImportData(do *definitions.Do) error {
	log.WithFields(log.Fields{
		"from": do.Source,
		"to":   do.Destination,
	}).Debug("Importing")
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {

		srv := PretendToBeAService(do.Name, do.Operations.ContainerNumber)
		service, exists := perform.ContainerExists(srv.Operations)

		if !exists {
			return fmt.Errorf("There is no data container for that service.")
		}
		if err := checkErisContainerRoot(do, "import"); err != nil {
			return err
		}

		containerName := util.DataContainersName(do.Name, do.Operations.ContainerNumber)
		os.Chdir(do.Source)

		reader, err := util.Tar(do.Source, 0)
		if err != nil {
			return err
		}
		defer reader.Close()

		opts := docker.UploadToContainerOptions{
			InputStream:          reader,
			Path:                 do.Destination,
			NoOverwriteDirNonDir: true,
		}

		log.WithField("=>", containerName).Info("Copying into container")
		log.WithField("path", do.Source).Debug()
		if err := util.DockerClient.UploadToContainer(service.ID, opts); err != nil {
			return err
		}

		doChown := definitions.NowDo()
		doChown.Operations.DataContainerName = containerName
		doChown.Operations.ContainerType = "data"
		doChown.Operations.ContainerNumber = do.Operations.ContainerNumber
		//required b/c `docker cp` (UploadToContainer) goes in as root
		doChown.Operations.Args = []string{"chown", "--recursive", "eris", do.Destination}
		_, err = perform.DockerRunData(doChown.Operations, nil)
		if err != nil {
			return fmt.Errorf("Error changing owner: %v\n", err)
		}
	} else {
		log.WithField("name", do.Name).Info("Data container does not exist.")
		ops := loaders.LoadDataDefinition(do.Name, do.Operations.ContainerNumber)
		if err := perform.DockerCreateData(ops); err != nil {
			return fmt.Errorf("Error creating data container %v.", err)
		}
		return ImportData(do)
	}
	do.Result = "success"
	return nil
}

func ImportData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {

		srv := PretendToBeAService(do.Name, do.Operations.ContainerNumber)
		service, exists := perform.ContainerExists(srv.Operations)

		if !exists {
			return fmt.Errorf("There is no data container for that service.")
		}

		containerName := util.DataContainersName(do.Name, do.Operations.ContainerNumber)
		logger.Debugf("Importing FROM =>\t\t%s\n", do.Source)
		os.Chdir(do.Source)

		logger.Debugf("Importing TO =>\t\t\t%s\n", do.Destination)
		reader, err := util.Tar(do.Source, 0)
		if err != nil {
			return err
		}
		defer reader.Close()

		opts := docker.UploadToContainerOptions{
			InputStream:          reader,
			Path:                 do.Destination,
			NoOverwriteDirNonDir: true,
		}

		logger.Infof("Copying into Cont. ID =>\t%s\n", service.ID)
		logger.Debugf("\tPath =>\t\t\t%s\n", do.Source)
		if err := util.DockerClient.UploadToContainer(service.ID, opts); err != nil {
			return err
		}

		doChown := definitions.NowDo()
		doChown.Operations.DataContainerName = containerName
		doChown.Operations.ContainerType = "data"
		doChown.Operations.ContainerNumber = 1
		doChown.Operations.Args = []string{"chown", "--recursive", "eris", do.Destination}
		_, err = perform.DockerRunData(doChown.Operations, nil)
		if err != nil {
			return fmt.Errorf("Error changing owner: %v\n", err)
		}
	} else {
		ops := loaders.LoadDataDefinition(do.Name, do.Operations.ContainerNumber)
		if err := perform.DockerCreateData(ops); err != nil {
			return fmt.Errorf("Error creating data container %v.", err)
		}
		return ImportData(do)
	}
	do.Result = "success"
	return nil
}

func ExecData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		do.Name = util.DataContainersName(do.Name, do.Operations.ContainerNumber)
		logger.Infoln("Running exec on container with volumes from data container " + do.Name)
		if err := perform.DockerRunVolumesFromContainer(do.Name, do.Interactive, do.Args); err != nil {
			return err
		}
	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}
	do.Result = "success"
	return nil
}

func RegisterChain(do *definitions.Do) error {
	// do.Name is mandatory
	if do.Name == "" {
		return fmt.Errorf("RegisterChain requires a chainame")
	}
	etcbChain := do.ChainID
	do.ChainID = do.Name

	// NOTE: registration expects you to have the data container
	if !util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		return fmt.Errorf("Registration requires you to have a data container for the chain. Could not find data for %s", do.Name)
	}

	chain, err := loaders.LoadChainDefinition(do.Name, false, do.Operations.ContainerNumber)
	if err != nil {
		return err
	}
	log.WithField("image", chain.Service.Image).Debug("Chain loaded")

	// set chainid and other vars
	envVars := []string{
		fmt.Sprintf("CHAIN_ID=%s", do.ChainID),                 // of the etcb chain
		fmt.Sprintf("PUBKEY=%s", do.Pubkey),                    // pubkey to register chain with
		fmt.Sprintf("ETCB_CHAIN_ID=%s", etcbChain),             // chain id of the etcb chain
		fmt.Sprintf("NODE_ADDR=%s", do.Gateway),                // etcb node to send the register tx to
		fmt.Sprintf("NEW_P2P_SEEDS=%s", do.Operations.Args[0]), // seeds to register for the chain // TODO: deal with multi seed (needs support in tendermint)
	}
	envVars = append(envVars, do.Env...)

	log.WithFields(log.Fields{
		"environment": envVars,
		"links":       do.Links,
	}).Debug("Registering chain with")
	chain.Service.Environment = append(chain.Service.Environment, envVars...)
	chain.Service.Links = append(chain.Service.Links, do.Links...)

	if err := bootDependencies(chain, do); err != nil {
		return err
	}

	log.WithFields(log.Fields{
		"=>":    chain.Service.Name,
		"image": chain.Service.Image,
	}).Debug("Performing chain container start")
	chain.Operations = loaders.LoadDataDefinition(chain.Service.Name, do.Operations.ContainerNumber)
	chain.Operations.Args = []string{loaders.ErisChainRegister}

	_, err = perform.DockerRunData(chain.Operations, chain.Service)

	return err
}

func ExecData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		log.WithField("=>", do.Operations.DataContainerName).Info("Executing data container")

		ops := loaders.LoadDataDefinition(do.Name, do.Operations.ContainerNumber)
		util.Merge(ops, do.Operations)
		if err := perform.DockerExecData(ops, nil); err != nil {
			return err
		}
	} else {
		return fmt.Errorf("The marmots cannot find that data container.\nPlease check the name of the data container with [eris data ls].")
	}
	do.Result = "success"
	return nil
}

func InspectData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		log.WithField("=>", do.Name).Info("Inspecting data container")

		srv := definitions.BlankServiceDefinition()
		srv.Operations.SrvContainerName = util.ContainersName(definitions.TypeData, do.Name, do.Operations.ContainerNumber)

		err := perform.DockerInspect(srv.Service, srv.Operations, do.Operations.Args[0])
		if err != nil {
			return err
		}
	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}
	do.Result = "success"
	return nil
}

func RenameData(do *definitions.Do) error {
	logger.Infof("Renaming Data =>\t\t%s:%s\n", do.Name, do.NewName)
	logger.Debugf("\twith ContainerNumber =>\t%d\n", do.Operations.ContainerNumber)

	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		ops := loaders.LoadDataDefinition(do.Name, do.Operations.ContainerNumber)
		util.Merge(ops, do.Operations)

		err := perform.DockerRename(ops, do.NewName)
		if err != nil {
			return err
		}
	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}
	do.Result = "success"
	return nil
}

func RenameData(do *definitions.Do) error {
	logger.Infof("Renaming Data =>\t\t%s:%s\n", do.Name, do.NewName)
	logger.Debugf("\twith ContainerNumber =>\t%d\n", do.Operations.ContainerNumber)

	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {

		srv := definitions.BlankServiceDefinition()
		srv.Operations.SrvContainerName = util.ContainersName("data", do.Name, do.Operations.ContainerNumber)

		err := perform.DockerRename(srv.Service, srv.Operations, do.Name, do.NewName)
		if err != nil {
			return err
		}
	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}
	do.Result = "success"
	return nil
}

func RenameData(do *definitions.Do) error {
	log.WithFields(log.Fields{
		"from": fmt.Sprintf("%s:%d", do.Name, do.Operations.ContainerNumber),
		"to":   fmt.Sprintf("%s:%d", do.NewName, do.Operations.ContainerNumber),
	}).Info("Renaming data container")

	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		ops := loaders.LoadDataDefinition(do.Name, do.Operations.ContainerNumber)
		util.Merge(ops, do.Operations)

		err := perform.DockerRename(ops, do.NewName)
		if err != nil {
			return err
		}
	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}
	do.Result = "success"
	return nil
}

func ImportData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {

		containerName := util.DataContainersName(do.Name, do.Operations.ContainerNumber)
		importPath := filepath.Join(DataContainersPath, do.Name)

		// temp until docker cp works both ways.
		logger.Debugf("Importing FROM =>\t\t%s\n", importPath)
		os.Chdir(importPath)
		// TODO [eb]: deal with hardcoded user
		// TODO [csk]: drop the whole damn cmd call
		//         use go's tar lib to make a tarball of the directory
		//         read the tar file into an io.Reader
		//         start a container with its Stdin open, connect to an io.Writer
		//         connect them up with io.Pipe
		//         this will free us from any quirks that the cli has
		if do.Path != "" {
			do.Path = do.Path
		} else {
			do.Path = "/home/eris/.eris"
		}

		logger.Debugf("Importing TO =>\t\t\t%s\n", do.Path)
		cmd := "tar chf - . | docker run -i --rm --volumes-from " + containerName + " --user eris eris/data tar xf - -C " + do.Path
		_, err := pipes.RunString(cmd)
		if err != nil {
			cmd := "tar chf - . | docker run -i --volumes-from " + containerName + " --user eris eris/data tar xf - -C " + do.Path
			_, e2 := pipes.RunString(cmd)
			if e2 != nil {
				return fmt.Errorf("Could not import the data container.\nTried with docker --rm =>\t%v\nTried without docker --rm =>\t%v", err, e2)
			}
		}
	} else {
		if err := perform.DockerCreateDataContainer(do.Name, do.Operations.ContainerNumber); err != nil {
			return fmt.Errorf("Error creating data container %v.", err)
		}
		return ImportData(do)
	}
	do.Result = "success"
	return nil
}

//export from: do.Source(in container), to: do.Destination(on host)
func ExportData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		log.WithField("=>", do.Name).Info("Exporting data container")

		// we want to export to a temp directory.
		exportPath, err := ioutil.TempDir(os.TempDir(), do.Name) // TODO: do.Operations.ContainerNumber ?
		defer os.Remove(exportPath)
		if err != nil {
			return err
		}

		containerName := util.DataContainersName(do.Name, do.Operations.ContainerNumber)
		srv := PretendToBeAService(do.Name, do.Operations.ContainerNumber)
		service, exists := perform.ContainerExists(srv.Operations)

		if !exists {
			return fmt.Errorf("There is no data container for that service.")
		}

		reader, writer := io.Pipe()
		defer reader.Close()

		if err := checkErisContainerRoot(do, "export"); err != nil {
			return err
		}
		opts := docker.DownloadFromContainerOptions{
			OutputStream: writer,
			Path:         do.Source,
		}

		go func() {
			log.WithField("=>", containerName).Info("Copying out of container")
			log.WithField("path", do.Source).Debug()
			IfExit(util.DockerClient.DownloadFromContainer(service.ID, opts)) // TODO: be smarter about catching this error
			writer.Close()
		}()

		log.WithField("=>", exportPath).Debug("Untarring package from container")
		if err = util.Untar(reader, do.Name, exportPath); err != nil {
			return err
		}

		// now if docker dumps to exportPath/.eris we should remove
		// move everything from .eris to exportPath
		if err := moveOutOfDirAndRmDir(filepath.Join(exportPath, ".eris"), exportPath); err != nil {
			return err
		}

		// finally remove everything in the data directory and move
		// the temp contents there
		if _, err := os.Stat(do.Destination); os.IsNotExist(err) {
			if e2 := os.MkdirAll(do.Destination, 0755); e2 != nil {
				return fmt.Errorf("Error:\tThe marmots could neither find, nor had access to make the directory: (%s)\n", do.Destination)
			}
		}
		if err := moveOutOfDirAndRmDir(exportPath, do.Destination); err != nil {
			return err
		}
	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}

	do.Result = "success"
	return nil
}

func ExportData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		logger.Infoln("Exporting data container", do.Name)

		exportPath := filepath.Join(DataContainersPath, do.Name) // TODO: do.Operations.ContainerNumber ?
		srv := PretendToBeAService(do.Name, do.Operations.ContainerNumber)

		service, exists := perform.ContainerExists(srv.Operations)

		if !exists {
			return fmt.Errorf("There is no data container for that service.")
		}
		logger.Infoln("Service ID: " + service.ID)

		cont, err := util.DockerClient.InspectContainer(service.ID)
		if err != nil {
			return err
		}

		reader, writer := io.Pipe()

		if do.Path != "" {
			do.Path = do.Path
		} else {
			do.Path = "/home/eris/.eris"
		}
		opts := docker.CopyFromContainerOptions{
			OutputStream: writer,
			Container:    service.ID,
			Resource:     do.Path,
		}

		go func() {
			IfExit(util.DockerClient.CopyFromContainer(opts))
			writer.Close()
		}()

		err = util.Untar(reader, do.Name, exportPath)
		if err != nil {
			return err
		}

		// docker actually exports to a `_data` folder for volumes
		//   this section of the function moves whatever docker dumps
		//   into exportPath/_data into export. ranging through the
		//   volumes is probably overkill as we could just assume
		//   that it *was* `_data` but in case docker changes later
		//   we'll just keep it for now.
		os.Chdir(exportPath)
		var unTarDestination string
		for k, v := range cont.Volumes {
			if k == "/home/eris/.eris" {
				unTarDestination = filepath.Base(v)
			}
		}
		if err := moveOutOfDirAndRmDir(filepath.Join(exportPath, unTarDestination), exportPath); err != nil {
			return err
		}

		// now if docker dumps to exportPath/.eris we should remove
		//   move everything from .eris to exportPath
		if err := moveOutOfDirAndRmDir(filepath.Join(exportPath, ".eris"), exportPath); err != nil {
			return err
		}

	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}

	do.Result = "success"
	return nil
}

// the main function for setting up a chain container
// handles both "new" and "fetch" - most of the differentiating logic is in the container
func setupChain(do *definitions.Do, cmd string) (err error) {
	// XXX: if do.Name is unique, we can safely assume (and we probably should) that do.Operations.ContainerNumber = 1

	// do.Name is mandatory
	if do.Name == "" {
		return fmt.Errorf("setupChain requires a chainame")
	}
	containerName := util.ChainContainersName(do.Name, do.Operations.ContainerNumber)
	if do.ChainID == "" {
		do.ChainID = do.Name
	}

	//if given path does not exist, see if its a reference to something in ~/.eris/chains/chainName
	if do.Path != "" {
		src, err := os.Stat(do.Path)
		if err != nil || !src.IsDir() {
			log.WithField("path", do.Path).Info("Path does not exist or not a directory")
			log.WithField("path", "$HOME/.eris/chains/"+do.Path).Info("Trying")
			do.Path, err = util.ChainsPathChecker(do.Path)
			if err != nil {
				return err
			}
		}
	} else if do.GenesisFile == "" && do.CSV == "" && len(do.ConfigOpts) == 0 {
		// NOTE: this expects you to have ~/.eris/chains/default/ (ie. to have run `eris init`)
		do.Path, err = util.ChainsPathChecker("default")
		if err != nil {
			return err
		}
	}

	// ensure/create data container
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		log.WithField("=>", do.Name).Debug("Chain data container already exists")
	} else {
		ops := loaders.LoadDataDefinition(do.Name, do.Operations.ContainerNumber)
		if err := perform.DockerCreateData(ops); err != nil {
			return fmt.Errorf("Error creating data container =>\t%v", err)
		}
	}

	log.WithField("=>", do.Name).Debug("Chain data container built")

	// if something goes wrong, cleanup
	defer func() {
		if err != nil {
			log.Infof("Error on setting up chain: %v", err)
			log.Info("Cleaning up")
			if err2 := RmChain(do); err2 != nil {
				// maybe be less dramatic
				err = fmt.Errorf("Tragic! Our marmots encountered an error during setupChain for %s.\nThey also failed to cleanup after themselves (remove containers) due to another error.\nFirst error =>\t\t\t%v\nCleanup error =>\t\t%v\n", containerName, err, err2)
			}
		}
	}()

	// copy do.Path, do.GenesisFile, do.ConfigFile, do.Priv, do.CSV into container
	containerDst := filepath.Join("chains", do.Name)                // path in container
	dst := filepath.Join(DataContainersPath, do.Name, containerDst) // path on host
	// TODO: deal with do.Operations.ContainerNumbers ....!
	// we probably need to update Import

	log.WithFields(log.Fields{
		"container path": containerDst,
		"local path":     dst,
	}).Debug()

	if err = os.MkdirAll(dst, 0700); err != nil {
		return fmt.Errorf("Error making data directory: %v", err)
	}

	// we accept two csvs: one for validators, one for accounts
	// if there's only one, its for validators and accounts
	var csvFiles []string
	var csvPaths string
	if do.CSV != "" {
		csvFiles = strings.Split(do.CSV, ",")
		if len(csvFiles) > 1 {
			csvPath1 := fmt.Sprintf("%s/%s/%s/%s", ErisContainerRoot, "chains", do.ChainID, "validators.csv")
			csvPath2 := fmt.Sprintf("%s/%s/%s/%s", ErisContainerRoot, "chains", do.ChainID, "accounts.csv")
			csvPaths = fmt.Sprintf("%s,%s", csvPath1, csvPath2)
		} else {
			csvPaths = fmt.Sprintf("%s/%s/%s/%s", ErisContainerRoot, "chains", do.ChainID, "genesis.csv")
		}
	}

	filesToCopy := []stringPair{
		{do.Path, ""},
		{do.GenesisFile, "genesis.json"},
		{do.ConfigFile, "config.toml"},
		{do.Priv, "priv_validator.json"},
	}

	if len(csvFiles) == 1 {
		filesToCopy = append(filesToCopy, stringPair{csvFiles[0], "genesis.csv"})
	} else if len(csvFiles) > 1 {
		filesToCopy = append(filesToCopy, stringPair{csvFiles[0], "validators.csv"})
		filesToCopy = append(filesToCopy, stringPair{csvFiles[1], "accounts.csv"})
	}
//.........这里部分代码省略.........

func ExportData(do *definitions.Do) error {
	if util.IsDataContainer(do.Name, do.Operations.ContainerNumber) {
		dVer, err := util.DockerClientVersion()
		if err != nil {
			return err
		}

		logger.Infoln("Exporting data container", do.Name)

		// we want to export to a temp directory.
		exportPath, err := ioutil.TempDir(os.TempDir(), do.Name) // TODO: do.Operations.ContainerNumber ?
		defer os.Remove(exportPath)
		if err != nil {
			return err
		}

		srv := PretendToBeAService(do.Name, do.Operations.ContainerNumber)
		service, exists := perform.ContainerExists(srv.Operations)

		if !exists {
			return fmt.Errorf("There is no data container for that service.")
		}

		cont, err := util.DockerClient.InspectContainer(service.ID)
		if err != nil {
			return err
		}

		reader, writer := io.Pipe()
		defer reader.Close()

		if do.Path != "" {
			do.Path = do.Path
		} else {
			do.Path = "/home/eris/.eris"
		}
		opts := docker.CopyFromContainerOptions{
			OutputStream: writer,
			Container:    service.ID,
			Resource:     do.Path,
		}

		go func() {
			logger.Infof("Copying out of Cont. ID =>\t%s\n", service.ID)
			logger.Debugf("\tPath =>\t\t\t%s\n", do.Path)
			IfExit(util.DockerClient.CopyFromContainer(opts))
			writer.Close()
		}()

		logger.Debugf("Untarring Package from Cont =>\t%s\n", exportPath)
		if err = util.Untar(reader, do.Name, exportPath); err != nil {
			return err
		}

		// docker actually exports to a `_data` folder for volumes
		//   this section of the function moves whatever docker dumps
		//   into exportPath/_data into export. ranging through the
		//   volumes is probably overkill as we could just assume
		//   that it *was* `_data` but in case docker changes later
		//   we'll just keep it for now. this is specific to 1.7 and
		//   below. For 1.8 we do not need to do this.
		os.Chdir(exportPath)
		var unTarDestination string
		for k, v := range cont.Volumes {
			if k == do.Path {
				unTarDestination = filepath.Base(v)
			}
		}
		logger.Debugf("Untarring to =>\t\t\t%s:%s\n", exportPath, unTarDestination)

		if dVer <= 1.7 {
			if err := moveOutOfDirAndRmDir(filepath.Join(exportPath, unTarDestination), exportPath); err != nil {
				return err
			}
		}

		// now if docker dumps to exportPath/.eris we should remove
		//   move everything from .eris to exportPath
		if err := moveOutOfDirAndRmDir(filepath.Join(exportPath, ".eris"), exportPath); err != nil {
			return err
		}

		// finally remove everything in the data directory and move
		//   the temp contents there
		prevDir := filepath.Join(DataContainersPath, do.Name)
		if _, err := os.Stat(prevDir); os.IsNotExist(err) {
			if e2 := os.MkdirAll(prevDir, 0666); e2 != nil {
				return fmt.Errorf("Error:\tThe marmots could neither find, nor had access to make the directory: (%s)\n", prevDir)
			}
		}
		ClearDir(prevDir)
		if err := moveOutOfDirAndRmDir(exportPath, prevDir); err != nil {
			return err
		}

	} else {
		return fmt.Errorf("I cannot find that data container. Please check the data container name you sent me.")
	}

	do.Result = "success"
//.........这里部分代码省略.........