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cli/command/node/cmd.go
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Kir Kolyshkin
Switch from x/net/context to context
12 май 2018, 02:49
12 май 2018, 02:49
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package node import ( "context" "errors" "github.com/docker/cli/cli" "github.com/docker/cli/cli/command" "github.com/docker/docker/api/types" apiclient "github.com/docker/docker/client" "github.com/spf13/cobra" ) // NewNodeCommand returns a cobra command for `node` subcommands func NewNodeCommand(dockerCli command.Cli) *cobra.Command { cmd := &cobra.Command{ Use: "node", Short: "Manage Swarm nodes", Args: cli.NoArgs, RunE: command.ShowHelp(dockerCli.Err()), Annotations: map[string]string{ "version": "1.24", "swarm": "", }, } 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(ctx context.Context, client apiclient.APIClient, ref string) (string, error) { if ref == "self" { info, err := client.Info(ctx) if err != nil { return "", err } if info.Swarm.NodeID == "" { // If there's no node ID in /info, the node probably // isn't a manager. Call a swarm-specific endpoint to // get a more specific error message. _, err = client.NodeList(ctx, types.NodeListOptions{}) if err != nil { return "", err } return "", errors.New("node ID not found in /info") } return info.Swarm.NodeID, nil } return ref, nil }