mirror of https://github.com/docker/cli.git
129 lines
2.8 KiB
Go
129 lines
2.8 KiB
Go
package plugin
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import (
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"encoding/json"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"github.com/docker/cli/cli"
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"github.com/docker/cli/cli/command"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/pkg/archive"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"golang.org/x/net/context"
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)
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// validateTag checks if the given repoName can be resolved.
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func validateTag(rawRepo string) error {
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_, err := reference.ParseNormalizedNamed(rawRepo)
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return err
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}
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// validateConfig ensures that a valid config.json is available in the given path
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func validateConfig(path string) error {
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dt, err := os.Open(filepath.Join(path, "config.json"))
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if err != nil {
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return err
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}
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m := types.PluginConfig{}
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err = json.NewDecoder(dt).Decode(&m)
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dt.Close()
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return err
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}
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// validateContextDir validates the given dir and returns abs path on success.
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func validateContextDir(contextDir string) (string, error) {
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absContextDir, err := filepath.Abs(contextDir)
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if err != nil {
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return "", err
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}
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stat, err := os.Lstat(absContextDir)
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if err != nil {
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return "", err
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}
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if !stat.IsDir() {
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return "", errors.Errorf("context must be a directory")
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}
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return absContextDir, nil
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}
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type pluginCreateOptions struct {
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repoName string
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context string
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compress bool
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}
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func newCreateCommand(dockerCli *command.DockerCli) *cobra.Command {
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options := pluginCreateOptions{}
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cmd := &cobra.Command{
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Use: "create [OPTIONS] PLUGIN PLUGIN-DATA-DIR",
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Short: "Create a plugin from a rootfs and configuration. Plugin data directory must contain config.json and rootfs directory.",
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Args: cli.RequiresMinArgs(2),
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RunE: func(cmd *cobra.Command, args []string) error {
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options.repoName = args[0]
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options.context = args[1]
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return runCreate(dockerCli, options)
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},
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}
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flags := cmd.Flags()
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flags.BoolVar(&options.compress, "compress", false, "Compress the context using gzip")
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return cmd
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}
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func runCreate(dockerCli *command.DockerCli, options pluginCreateOptions) error {
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var (
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createCtx io.ReadCloser
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err error
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)
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if err := validateTag(options.repoName); err != nil {
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return err
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}
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absContextDir, err := validateContextDir(options.context)
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if err != nil {
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return err
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}
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if err := validateConfig(options.context); err != nil {
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return err
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}
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compression := archive.Uncompressed
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if options.compress {
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logrus.Debugf("compression enabled")
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compression = archive.Gzip
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}
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createCtx, err = archive.TarWithOptions(absContextDir, &archive.TarOptions{
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Compression: compression,
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})
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if err != nil {
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return err
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}
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ctx := context.Background()
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createOptions := types.PluginCreateOptions{RepoName: options.repoName}
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if err = dockerCli.Client().PluginCreate(ctx, createCtx, createOptions); err != nil {
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return err
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}
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fmt.Fprintln(dockerCli.Out(), options.repoName)
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return nil
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}
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