spiegel_podman/cmd/podman/containers/exists.go
Jhon Honce 33944cefe7 [Techinal Debt] Cleanup ABI vs. Tunnel CLI commands
[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>
2021-05-27 11:40:43 -07:00

52 lines
1.5 KiB
Go

package containers
import (
"context"
"github.com/containers/podman/v3/cmd/podman/common"
"github.com/containers/podman/v3/cmd/podman/registry"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/spf13/cobra"
)
var (
containerExistsDescription = `If the named container exists in local storage, podman container exists exits with 0, otherwise the exit code will be 1.`
existsCommand = &cobra.Command{
Use: "exists [options] CONTAINER",
Short: "Check if a container exists in local storage",
Long: containerExistsDescription,
Example: `podman container exists --external containerID
podman container exists myctr || podman run --name myctr [etc...]`,
RunE: exists,
Args: cobra.ExactArgs(1),
ValidArgsFunction: common.AutocompleteContainers,
}
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: existsCommand,
Parent: containerCmd,
})
flags := existsCommand.Flags()
flags.Bool("external", false, "Check external storage containers as well as Podman containers")
}
func exists(cmd *cobra.Command, args []string) error {
external, err := cmd.Flags().GetBool("external")
if err != nil {
return err
}
options := entities.ContainerExistsOptions{
External: external,
}
response, err := registry.ContainerEngine().ContainerExists(context.Background(), args[0], options)
if err != nil {
return err
}
if !response.Value {
registry.SetExitCode(1)
}
return nil
}