Merge pull request #5848 from thaJeztah/improve_swarm_completion

completion: fix / add completion for service names and node-names

cli/command/node/completion.go

@@ -0,0 +1,37 @@
+package node
+
+import (
+	"os"
+
+	"github.com/docker/cli/cli/command/completion"
+	"github.com/docker/docker/api/types"
+	"github.com/spf13/cobra"
+)
+
+// completeNodeNames offers completion for swarm node (host)names and optional IDs.
+// By default, only names are returned.
+// Set DOCKER_COMPLETION_SHOW_NODE_IDS=yes to also complete IDs.
+//
+// TODO(thaJeztah): add support for filters.
+func completeNodeNames(dockerCLI completion.APIClientProvider) completion.ValidArgsFn {
+	// https://github.com/docker/cli/blob/f9ced58158d5e0b358052432244b483774a1983d/contrib/completion/bash/docker#L41-L43
+	showIDs := os.Getenv("DOCKER_COMPLETION_SHOW_NODE_IDS") == "yes"
+	return func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		list, err := dockerCLI.Client().NodeList(cmd.Context(), types.NodeListOptions{})
+		if err != nil {
+			return nil, cobra.ShellCompDirectiveError
+		}
+
+		names := make([]string, 0, len(list)+1)
+		for _, node := range list {
+			if showIDs {
+				names = append(names, node.Description.Hostname, node.ID)
+			} else {
+				names = append(names, node.Description.Hostname)
+			}
+		}
+		// Nodes allow "self" as magic word for the current node.
+		names = append(names, "self")
+		return names, cobra.ShellCompDirectiveNoFileComp
+	}
+}

cli/command/node/demote.go

@@ -18,6 +18,7 @@ func newDemoteCommand(dockerCli command.Cli) *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runDemote(cmd.Context(), dockerCli, args)
 		},
+		ValidArgsFunction: completeNodeNames(dockerCli),
 	}
 }
 

cli/command/node/inspect.go

@@ -32,6 +32,7 @@ func newInspectCommand(dockerCli command.Cli) *cobra.Command {
 			opts.nodeIds = args
 			return runInspect(cmd.Context(), dockerCli, opts)
 		},
+		ValidArgsFunction: completeNodeNames(dockerCli),
 	}
 
 	flags := cmd.Flags()

cli/command/node/list.go

@@ -14,6 +14,7 @@ import (
 	"github.com/docker/docker/api/types/system"
 	"github.com/fvbommel/sortorder"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 type listOptions struct {
@@ -40,6 +41,12 @@ func newListCommand(dockerCli command.Cli) *cobra.Command {
 	flags.StringVar(&options.format, "format", "", flagsHelper.FormatHelp)
 	flags.VarP(&options.filter, "filter", "f", "Filter output based on conditions provided")
 
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/node/promote.go

@@ -18,6 +18,7 @@ func newPromoteCommand(dockerCli command.Cli) *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runPromote(cmd.Context(), dockerCli, args)
 		},
+		ValidArgsFunction: completeNodeNames(dockerCli),
 	}
 }
 

cli/command/node/ps.go

@@ -14,6 +14,7 @@ import (
 	"github.com/docker/docker/api/types/swarm"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 type psOptions struct {
@@ -41,7 +42,7 @@ func newPsCommand(dockerCli command.Cli) *cobra.Command {
 
 			return runPs(cmd.Context(), dockerCli, options)
 		},
-		ValidArgsFunction: completion.NoComplete,
+		ValidArgsFunction: completeNodeNames(dockerCli),
 	}
 	flags := cmd.Flags()
 	flags.BoolVar(&options.noTrunc, "no-trunc", false, "Do not truncate output")
@@ -50,6 +51,12 @@ func newPsCommand(dockerCli command.Cli) *cobra.Command {
 	flags.StringVar(&options.format, "format", "", "Pretty-print tasks using a Go template")
 	flags.BoolVarP(&options.quiet, "quiet", "q", false, "Only display task IDs")
 
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/node/remove.go

@@ -26,6 +26,7 @@ func newRemoveCommand(dockerCli command.Cli) *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runRemove(cmd.Context(), dockerCli, args, opts)
 		},
+		ValidArgsFunction: completeNodeNames(dockerCli),
 	}
 	flags := cmd.Flags()
 	flags.BoolVarP(&opts.force, "force", "f", false, "Force remove a node from the swarm")

cli/command/node/update.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/completion"
 	"github.com/docker/cli/opts"
 	"github.com/docker/docker/api/types/swarm"
 	"github.com/pkg/errors"
@@ -25,6 +26,7 @@ func newUpdateCommand(dockerCli command.Cli) *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runUpdate(cmd.Context(), dockerCli, cmd.Flags(), args[0])
 		},
+		ValidArgsFunction: completeNodeNames(dockerCli),
 	}
 
 	flags := cmd.Flags()
@@ -33,6 +35,15 @@ func newUpdateCommand(dockerCli command.Cli) *cobra.Command {
 	flags.Var(&options.annotations.labels, flagLabelAdd, `Add or update a node label ("key=value")`)
 	labelKeys := opts.NewListOpts(nil)
 	flags.Var(&labelKeys, flagLabelRemove, "Remove a node label if exists")
+
+	_ = cmd.RegisterFlagCompletionFunc(flagRole, completion.FromList("worker", "manager"))
+	_ = cmd.RegisterFlagCompletionFunc(flagAvailability, completion.FromList("active", "pause", "drain"))
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/service/cmd.go

@@ -1,6 +1,8 @@
 package service
 
 import (
+	"os"
+
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
 	"github.com/docker/cli/cli/command/completion"
@@ -34,16 +36,25 @@ func NewServiceCommand(dockerCli command.Cli) *cobra.Command {
 	return cmd
 }
 
-// CompletionFn offers completion for swarm services
+// CompletionFn offers completion for swarm service names and optional IDs.
+// By default, only names are returned.
+// Set DOCKER_COMPLETION_SHOW_SERVICE_IDS=yes to also complete IDs.
 func CompletionFn(dockerCLI completion.APIClientProvider) completion.ValidArgsFn {
+	// https://github.com/docker/cli/blob/f9ced58158d5e0b358052432244b483774a1983d/contrib/completion/bash/docker#L41-L43
+	showIDs := os.Getenv("DOCKER_COMPLETION_SHOW_SERVICE_IDS") == "yes"
 	return func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 		list, err := dockerCLI.Client().ServiceList(cmd.Context(), types.ServiceListOptions{})
 		if err != nil {
 			return nil, cobra.ShellCompDirectiveError
 		}
-		var names []string
+
+		names := make([]string, 0, len(list))
 		for _, service := range list {
-			names = append(names, service.ID)
+			if showIDs {
+				names = append(names, service.Spec.Name, service.ID)
+			} else {
+				names = append(names, service.Spec.Name)
+			}
 		}
 		return names, cobra.ShellCompDirectiveNoFileComp
 	}

cli/command/service/create.go

@@ -16,7 +16,7 @@ import (
 	"github.com/spf13/pflag"
 )
 
-func newCreateCommand(dockerCli command.Cli) *cobra.Command {
+func newCreateCommand(dockerCLI command.Cli) *cobra.Command {
 	opts := newServiceOptions()
 
 	cmd := &cobra.Command{
@@ -28,7 +28,7 @@ func newCreateCommand(dockerCli command.Cli) *cobra.Command {
 			if len(args) > 1 {
 				opts.args = args[1:]
 			}
-			return runCreate(cmd.Context(), dockerCli, cmd.Flags(), opts)
+			return runCreate(cmd.Context(), dockerCLI, cmd.Flags(), opts)
 		},
 		ValidArgsFunction: completion.NoComplete,
 	}
@@ -75,6 +75,28 @@ func newCreateCommand(dockerCli command.Cli) *cobra.Command {
 	flags.SetAnnotation(flagHostAdd, "version", []string{"1.32"})
 
 	flags.SetInterspersed(false)
+
+	// TODO(thaJeztah): add completion for capabilities, stop-signal (currently non-exported in container package)
+	// _ = cmd.RegisterFlagCompletionFunc(flagCapAdd, completeLinuxCapabilityNames)
+	// _ = cmd.RegisterFlagCompletionFunc(flagCapDrop, completeLinuxCapabilityNames)
+	// _ = cmd.RegisterFlagCompletionFunc(flagStopSignal, completeSignals)
+
+	_ = cmd.RegisterFlagCompletionFunc(flagMode, completion.FromList("replicated", "global", "replicated-job", "global-job"))
+	_ = cmd.RegisterFlagCompletionFunc(flagEnv, completion.EnvVarNames) // TODO(thaJeztah): flagEnvRemove (needs to read current env-vars on the service)
+	_ = cmd.RegisterFlagCompletionFunc(flagEnvFile, completion.FileNames)
+	_ = cmd.RegisterFlagCompletionFunc(flagNetwork, completion.NetworkNames(dockerCLI))
+	_ = cmd.RegisterFlagCompletionFunc(flagRestartCondition, completion.FromList("none", "on-failure", "any"))
+	_ = cmd.RegisterFlagCompletionFunc(flagRollbackOrder, completion.FromList("start-first", "stop-first"))
+	_ = cmd.RegisterFlagCompletionFunc(flagRollbackFailureAction, completion.FromList("pause", "continue"))
+	_ = cmd.RegisterFlagCompletionFunc(flagUpdateOrder, completion.FromList("start-first", "stop-first"))
+	_ = cmd.RegisterFlagCompletionFunc(flagUpdateFailureAction, completion.FromList("pause", "continue", "rollback"))
+
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/service/inspect.go

@@ -9,13 +9,15 @@ import (
 
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/completion"
 	"github.com/docker/cli/cli/command/formatter"
 	flagsHelper "github.com/docker/cli/cli/flags"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/network"
 	"github.com/docker/docker/errdefs"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 type inspectOptions struct {
@@ -47,6 +49,13 @@ func newInspectCommand(dockerCli command.Cli) *cobra.Command {
 	flags := cmd.Flags()
 	flags.StringVarP(&opts.format, "format", "f", "", flagsHelper.InspectFormatHelp)
 	flags.BoolVar(&opts.pretty, "pretty", false, "Print the information in a human friendly format")
+
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/service/list.go

@@ -14,6 +14,7 @@ import (
 	"github.com/docker/docker/api/types/swarm"
 	"github.com/docker/docker/client"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 type listOptions struct {
@@ -41,6 +42,12 @@ func newListCommand(dockerCLI command.Cli) *cobra.Command {
 	flags.StringVar(&options.format, "format", "", flagsHelper.FormatHelp)
 	flags.VarP(&options.filter, "filter", "f", "Filter output based on conditions provided")
 
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/service/logs.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/completion"
 	"github.com/docker/cli/cli/command/idresolver"
 	"github.com/docker/cli/service/logs"
 	"github.com/docker/docker/api/types"
@@ -22,6 +23,7 @@ import (
 	"github.com/docker/docker/pkg/stringid"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 type logsOptions struct {
@@ -69,6 +71,13 @@ func newLogsCommand(dockerCli command.Cli) *cobra.Command {
 	flags.BoolVar(&opts.details, "details", false, "Show extra details provided to logs")
 	flags.SetAnnotation("details", "version", []string{"1.30"})
 	flags.StringVarP(&opts.tail, "tail", "n", "all", "Number of lines to show from the end of the logs")
+
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/service/ps.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/completion"
 	"github.com/docker/cli/cli/command/idresolver"
 	"github.com/docker/cli/cli/command/node"
 	"github.com/docker/cli/cli/command/task"
@@ -15,6 +16,7 @@ import (
 	"github.com/docker/docker/client"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 type psOptions struct {
@@ -48,6 +50,12 @@ func newPsCommand(dockerCli command.Cli) *cobra.Command {
 	flags.StringVar(&options.format, "format", "", "Pretty-print tasks using a Go template")
 	flags.VarP(&options.filter, "filter", "f", "Filter output based on conditions provided")
 
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }
 

cli/command/service/rollback.go

@@ -6,9 +6,11 @@ import (
 
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/completion"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/versions"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 func newRollbackCommand(dockerCli command.Cli) *cobra.Command {
@@ -31,6 +33,12 @@ func newRollbackCommand(dockerCli command.Cli) *cobra.Command {
 	flags.BoolVarP(&options.quiet, flagQuiet, "q", false, "Suppress progress output")
 	addDetachFlag(flags, &options.detach)
 
+	flags.VisitAll(func(flag *pflag.Flag) {
+		// Set a default completion function if none was set. We don't look
+		// up if it does already have one set, because Cobra does this for
+		// us, and returns an error (which we ignore for this reason).
+		_ = cmd.RegisterFlagCompletionFunc(flag.Name, completion.NoComplete)
+	})
 	return cmd
 }