// 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"})
}
log.Info("Copying chain files into the correct location")
if err := copyFiles(dst, filesToCopy); err != nil {
return err
}
// copy from host to container
log.WithFields(log.Fields{
"from": dst,
"to": containerDst,
}).Debug("Copying files into data container")
importDo := definitions.NowDo()
importDo.Name = do.Name
importDo.Operations = do.Operations
importDo.Destination = ErisContainerRoot
importDo.Source = filepath.Join(DataContainersPath, do.Name)
if err = data.ImportData(importDo); err != nil {
return err
}
chain := loaders.MockChainDefinition(do.Name, do.ChainID, false, do.Operations.ContainerNumber)
//set maintainer info
chain.Maintainer.Name, chain.Maintainer.Email, err = config.GitConfigUser()
if err != nil {
log.Debug(err.Error())
}
// write the chain definition file ...
fileName := filepath.Join(ChainsPath, do.Name) + ".toml"
if _, err = os.Stat(fileName); err != nil {
if err = WriteChainDefinitionFile(chain, fileName); err != nil {
return fmt.Errorf("error writing chain definition to file: %v", err)
}
}
chain, err = loaders.LoadChainDefinition(do.Name, false, do.Operations.ContainerNumber)
if err != nil {
return err
}
log.WithField("image", chain.Service.Image).Debug("Chain loaded")
chain.Operations.PublishAllPorts = do.Operations.PublishAllPorts // TODO: remove this and marshall into struct from cli directly
// cmd should be "new" or "install"
chain.Service.Command = cmd
// write the list of <key>:<value> config options as flags
buf := new(bytes.Buffer)
for _, cv := range do.ConfigOpts {
spl := strings.Split(cv, "=")
if len(spl) != 2 {
return fmt.Errorf("Config options should be <key>=<value> pairs. Got %s", cv)
}
buf.WriteString(fmt.Sprintf(" --%s=%s", spl[0], spl[1]))
}
configOpts := buf.String()
// set chainid and other vars
envVars := []string{
fmt.Sprintf("CHAIN_ID=%s", do.ChainID),
fmt.Sprintf("CONTAINER_NAME=%s", containerName),
fmt.Sprintf("CSV=%v", csvPaths), // for mintgen
fmt.Sprintf("CONFIG_OPTS=%s", configOpts), // for config.toml
fmt.Sprintf("NODE_ADDR=%s", do.Gateway), // etcb host
fmt.Sprintf("DOCKER_FIX=%s", " "), // https://github.com/docker/docker/issues/14203
}
envVars = append(envVars, do.Env...)
if do.Run {
// run erisdb instead of tendermint
envVars = append(envVars, "ERISDB_API=true")
}
log.WithFields(log.Fields{
"environment": envVars,
"links": do.Links,
}).Debug()
chain.Service.Environment = append(chain.Service.Environment, envVars...)
chain.Service.Links = append(chain.Service.Links, do.Links...)
// TODO: if do.N > 1 ...
chain.Operations.DataContainerName = util.DataContainersName(do.Name, do.Operations.ContainerNumber)
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")
err = perform.DockerRunService(chain.Service, chain.Operations)
// this err is caught in the defer above
return
}
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
}