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moby--moby/api/client/node/cmd.go
Stephen J Day 0aa4e1e689
cli: docker service|node|stack ps instead of tasks
Rather than conflict with the unexposed task model, change the names of
the object-oriented task display to `docker <object> ps`. The command
works identically to `docker service tasks`. This change is superficial.

This provides a more sensical docker experience while not trampling on
the task model that may be introduced as a top-level command at a later
date.

The following is an example of the display using `docker service ps`
with a service named `condescending_cori`:

```
$ docker service ps condescending_cori
ID                         NAME                  SERVICE             IMAGE   LAST STATE              DESIRED STATE  NODE
e2cd9vqb62qjk38lw65uoffd2  condescending_cori.1  condescending_cori  alpine  Running 13 minutes ago  Running        6c6d232a5d0e
```

The following shows the output for the node on which the command is
running:

```console
$ docker node ps self
ID                         NAME                  SERVICE             IMAGE   LAST STATE              DESIRED STATE  NODE
b1tpbi43k1ibevg2e94bmqo0s  mad_kalam.1           mad_kalam           apline  Accepted 2 seconds ago  Accepted       6c6d232a5d0e
e2cd9vqb62qjk38lw65uoffd2  condescending_cori.1  condescending_cori  alpine  Running 12 minutes ago  Running        6c6d232a5d0e
4x609m5o0qyn0kgpzvf0ad8x5  furious_davinci.1     furious_davinci     redis   Running 32 minutes ago  Running        6c6d232a5d0e
```

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2016-07-27 11:06:42 -07:00

49 lines
1.2 KiB
Go

package node
import (
"fmt"
"golang.org/x/net/context"
"github.com/spf13/cobra"
"github.com/docker/docker/api/client"
"github.com/docker/docker/cli"
apiclient "github.com/docker/engine-api/client"
)
// NewNodeCommand returns a cobra command for `node` subcommands
func NewNodeCommand(dockerCli *client.DockerCli) *cobra.Command {
cmd := &cobra.Command{
Use: "node",
Short: "Manage Docker Swarm nodes",
Args: cli.NoArgs,
Run: func(cmd *cobra.Command, args []string) {
fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
},
}
cmd.AddCommand(
newDemoteCommand(dockerCli),
newInspectCommand(dockerCli),
newListCommand(dockerCli),
newPromoteCommand(dockerCli),
newRemoveCommand(dockerCli),
newPSCommand(dockerCli),
newUpdateCommand(dockerCli),
)
return cmd
}
// Reference returns the reference of a node. The special value "self" for a node
// reference is mapped to the current node, hence the node ID is retrieved using
// the `/info` endpoint.
func Reference(client apiclient.APIClient, ctx context.Context, ref string) (string, error) {
if ref == "self" {
info, err := client.Info(ctx)
if err != nil {
return "", err
}
return info.Swarm.NodeID, nil
}
return ref, nil
}