Introduce .zip import for docker context

Adds capabilities to import a .zip file with importZip.
Detects the content type of source by checking bytes & DetectContentType.
Adds LimitedReader reader, a fork of io.LimitedReader,
was needed for better error messaging instead of just getting back EOF.
We are using limited reader to avoid very big files causing memory issues.
Adds a new file size limit for context imports,
this limit is used for the main file for .zip & .tar and individual compressed
files for .zip.
Added TestImportZip that will check the import content type
Then will assert no err on Importing .zip file

Signed-off-by: Goksu Toprak <goksu.toprak@docker.com>
This commit is contained in:
Goksu Toprak
2019-05-14 13:14:39 -07:00
parent 0f337f1dfe
commit 291e86289b
5 changed files with 252 additions and 17 deletions

View File

@ -14,7 +14,7 @@ import (
func newImportCommand(dockerCli command.Cli) *cobra.Command {
cmd := &cobra.Command{
Use: "import CONTEXT FILE|-",
Short: "Import a context from a tar file",
Short: "Import a context from a tar or zip file",
Args: cli.ExactArgs(2),
RunE: func(cmd *cobra.Command, args []string) error {
return RunImport(dockerCli, args[0], args[1])
@ -28,6 +28,7 @@ func RunImport(dockerCli command.Cli, name string, source string) error {
if err := checkContextNameForCreation(dockerCli.ContextStore(), name); err != nil {
return err
}
var reader io.Reader
if source == "-" {
reader = dockerCli.In()
@ -43,6 +44,7 @@ func RunImport(dockerCli command.Cli, name string, source string) error {
if err := store.Import(name, dockerCli.ContextStore(), reader); err != nil {
return err
}
fmt.Fprintln(dockerCli.Out(), name)
fmt.Fprintf(dockerCli.Err(), "Successfully imported context %q\n", name)
return nil