mirror of
https://github.com/podman-container-tools/podman.git
synced 2026-08-11 03:15:44 +00:00
33944cefe7
[NO TESTS NEEDED] This commit cleans up two issues: * Most commands support all EngineModes so default to that. Let outlayers declare their intent. * Use cobra.Annotations to set supported EngineMode. This simplies instantiating commands as there is now one method to communicate a commands requirements rather than two. * Combined aliased commands into one file * Fixed aliased commands where Args field did not match * Updated examples in README.md for writing commands * Remove redundant flag DisableFlagsInUseLine in cobra.Command initialization. Signed-off-by: Jhon Honce <jhonce@redhat.com>
80 lines
2.4 KiB
Go
80 lines
2.4 KiB
Go
package containers
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import (
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"context"
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"os"
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"github.com/containers/common/pkg/completion"
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"github.com/containers/podman/v3/cmd/podman/common"
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"github.com/containers/podman/v3/cmd/podman/parse"
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"github.com/containers/podman/v3/cmd/podman/registry"
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"github.com/containers/podman/v3/pkg/domain/entities"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"golang.org/x/crypto/ssh/terminal"
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)
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var (
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exportDescription = "Exports container's filesystem contents as a tar archive" +
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" and saves it on the local machine."
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exportCommand = &cobra.Command{
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Use: "export [options] CONTAINER",
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Short: "Export container's filesystem contents as a tar archive",
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Long: exportDescription,
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RunE: export,
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Args: cobra.ExactArgs(1),
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ValidArgsFunction: common.AutocompleteContainers,
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Example: `podman export ctrID > myCtr.tar
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podman export --output="myCtr.tar" ctrID`,
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}
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containerExportCommand = &cobra.Command{
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Args: cobra.ExactArgs(1),
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Use: exportCommand.Use,
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Short: exportCommand.Short,
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Long: exportCommand.Long,
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RunE: exportCommand.RunE,
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ValidArgsFunction: exportCommand.ValidArgsFunction,
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Example: `podman container export ctrID > myCtr.tar
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podman container export --output="myCtr.tar" ctrID`,
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}
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)
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var (
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exportOpts entities.ContainerExportOptions
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)
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func exportFlags(cmd *cobra.Command) {
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flags := cmd.Flags()
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outputFlagName := "output"
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flags.StringVarP(&exportOpts.Output, outputFlagName, "o", "", "Write to a specified file (default: stdout, which must be redirected)")
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_ = cmd.RegisterFlagCompletionFunc(outputFlagName, completion.AutocompleteDefault)
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}
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: exportCommand,
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})
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exportFlags(exportCommand)
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: containerExportCommand,
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Parent: containerCmd,
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})
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exportFlags(containerExportCommand)
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}
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func export(cmd *cobra.Command, args []string) error {
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if len(exportOpts.Output) == 0 {
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file := os.Stdout
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if terminal.IsTerminal(int(file.Fd())) {
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return errors.Errorf("refusing to export to terminal. Use -o flag or redirect")
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}
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exportOpts.Output = "/dev/stdout"
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} else if err := parse.ValidateFileName(exportOpts.Output); err != nil {
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return err
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}
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return registry.ContainerEngine().ContainerExport(context.Background(), args[0], exportOpts)
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}
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