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
}
//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) {
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
}