/
diff.go
74 lines (64 loc) · 2.24 KB
/
diff.go
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package containers
import (
"github.com/containers/common/pkg/report"
"github.com/containers/podman/v2/cmd/podman/common"
"github.com/containers/podman/v2/cmd/podman/registry"
"github.com/containers/podman/v2/cmd/podman/validate"
"github.com/containers/podman/v2/pkg/domain/entities"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
var (
// podman container _diff_
diffCmd = &cobra.Command{
Use: "diff [options] CONTAINER",
Args: validate.IDOrLatestArgs,
Short: "Inspect changes to the container's file systems",
Long: `Displays changes to the container filesystem's'. The container will be compared to its parent layer.`,
RunE: diff,
ValidArgsFunction: common.AutocompleteContainers,
Example: `podman container diff myCtr
podman container diff -l --format json myCtr`,
}
diffOpts *entities.DiffOptions
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: diffCmd,
Parent: containerCmd,
})
diffOpts = &entities.DiffOptions{}
flags := diffCmd.Flags()
flags.BoolVar(&diffOpts.Archive, "archive", true, "Save the diff as a tar archive")
_ = flags.MarkHidden("archive")
formatFlagName := "format"
flags.StringVar(&diffOpts.Format, formatFlagName, "", "Change the output format")
_ = diffCmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteJSONFormat)
validate.AddLatestFlag(diffCmd, &diffOpts.Latest)
}
func diff(cmd *cobra.Command, args []string) error {
if len(args) == 0 && !diffOpts.Latest {
return errors.New("container must be specified: podman container diff [options [...]] ID-NAME")
}
var id string
if len(args) > 0 {
id = args[0]
}
results, err := registry.ContainerEngine().ContainerDiff(registry.GetContext(), id, *diffOpts)
if err != nil {
return err
}
switch {
case report.IsJSON(diffOpts.Format):
return common.ChangesToJSON(results)
case diffOpts.Format == "":
return common.ChangesToTable(results)
default:
return errors.New("only supported value for '--format' is 'json'")
}
}
func Diff(cmd *cobra.Command, args []string, options entities.DiffOptions) error {
diffOpts = &options
return diff(cmd, args)
}