示例#1
0
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
}
示例#2
0
文件: operate.go 项目: mxjxn/eris-cli
//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
}
示例#3
0
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"
	return nil
}