From 3508bd22fe355630453d497d905e480974a84b96 Mon Sep 17 00:00:00 2001 From: Daniel J Walsh Date: Fri, 9 Sep 2022 09:06:18 -0400 Subject: Add support for podman context as alias to podman system connection Alias podman --context -> podman --connection podman context use -> podman system connection default podman context rm -> podman system connection rm podman context create -> podman system connection add podman context ls ->podman system connection ls podman context inspect ->podman system connection ls --json (For specified connections) Podman context is a hidden command, but can be used for existing scripts that assume Docker under the covers. Signed-off-by: Daniel J Walsh --- cmd/podman/system/connection/add.go | 84 ++++++++++++++++++++++++++++++++- cmd/podman/system/connection/default.go | 14 ++++++ cmd/podman/system/connection/list.go | 56 ++++++++++++++++++++-- cmd/podman/system/connection/remove.go | 8 ++++ cmd/podman/system/context.go | 28 +++++++++++ 5 files changed, 184 insertions(+), 6 deletions(-) create mode 100644 cmd/podman/system/context.go (limited to 'cmd/podman/system') diff --git a/cmd/podman/system/connection/add.go b/cmd/podman/system/connection/add.go index f3b61b254..2730ebfb7 100644 --- a/cmd/podman/system/connection/add.go +++ b/cmd/podman/system/connection/add.go @@ -6,6 +6,7 @@ import ( "net/url" "os" "regexp" + "strings" "github.com/containers/common/pkg/completion" "github.com/containers/common/pkg/config" @@ -37,6 +38,17 @@ var ( `, } + createCmd = &cobra.Command{ + Use: "create [options] NAME DESTINATION", + Args: cobra.ExactArgs(1), + Short: addCmd.Short, + Long: addCmd.Long, + RunE: create, + ValidArgsFunction: completion.AutocompleteNone, + } + + dockerPath string + cOpts = struct { Identity string Port int @@ -50,7 +62,6 @@ func init() { Command: addCmd, Parent: system.ConnectionCmd, }) - flags := addCmd.Flags() portFlagName := "port" @@ -66,6 +77,21 @@ func init() { _ = addCmd.RegisterFlagCompletionFunc(socketPathFlagName, completion.AutocompleteDefault) flags.BoolVarP(&cOpts.Default, "default", "d", false, "Set connection to be default") + + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: createCmd, + Parent: system.ContextCmd, + }) + + flags = createCmd.Flags() + dockerFlagName := "docker" + flags.StringVar(&dockerPath, dockerFlagName, "", "Description of the context") + + _ = createCmd.RegisterFlagCompletionFunc(dockerFlagName, completion.AutocompleteNone) + flags.String("description", "", "Ignored. Just for script compatibility") + flags.String("from", "", "Ignored. Just for script compatibility") + flags.String("kubernetes", "", "Ignored. Just for script compatibility") + flags.String("default-stack-orchestrator", "", "Ignored. Just for script compatibility") } func add(cmd *cobra.Command, args []string) error { @@ -171,3 +197,59 @@ func add(cmd *cobra.Command, args []string) error { } return cfg.Write() } + +func create(cmd *cobra.Command, args []string) error { + dest, err := translateDest(dockerPath) + if err != nil { + return err + } + if match, err := regexp.Match("^[A-Za-z][A-Za-z0-9+.-]*://", []byte(dest)); err != nil { + return fmt.Errorf("invalid destination: %w", err) + } else if !match { + dest = "ssh://" + dest + } + + uri, err := url.Parse(dest) + if err != nil { + return err + } + + cfg, err := config.ReadCustomConfig() + if err != nil { + return err + } + + dst := config.Destination{ + URI: uri.String(), + } + + if cfg.Engine.ServiceDestinations == nil { + cfg.Engine.ServiceDestinations = map[string]config.Destination{ + args[0]: dst, + } + cfg.Engine.ActiveService = args[0] + } else { + cfg.Engine.ServiceDestinations[args[0]] = dst + } + return cfg.Write() +} + +func translateDest(path string) (string, error) { + if path == "" { + return "", nil + } + split := strings.SplitN(path, "=", 2) + if len(split) == 1 { + return split[0], nil + } + if split[0] != "host" { + return "", fmt.Errorf("\"host\" is requited for --docker option") + } + // "host=tcp://myserver:2376,ca=~/ca-file,cert=~/cert-file,key=~/key-file" + vals := strings.Split(split[1], ",") + if len(vals) > 1 { + return "", fmt.Errorf("--docker additional options %q not supported", strings.Join(vals[1:], ",")) + } + // for now we ignore other fields specified on command line + return vals[0], nil +} diff --git a/cmd/podman/system/connection/default.go b/cmd/podman/system/connection/default.go index 81866df55..8d1709e9f 100644 --- a/cmd/podman/system/connection/default.go +++ b/cmd/podman/system/connection/default.go @@ -21,9 +21,23 @@ var ( RunE: defaultRunE, Example: `podman system connection default testing`, } + + useCmd = &cobra.Command{ + Use: "use NAME", + Args: cobra.ExactArgs(1), + Short: dfltCmd.Short, + Long: dfltCmd.Long, + ValidArgsFunction: dfltCmd.ValidArgsFunction, + RunE: dfltCmd.RunE, + Example: `podman context use testing`, + } ) func init() { + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: useCmd, + Parent: system.ContextCmd, + }) registry.Commands = append(registry.Commands, registry.CliCommand{ Command: dfltCmd, Parent: system.ConnectionCmd, diff --git a/cmd/podman/system/connection/list.go b/cmd/podman/system/connection/list.go index 2c5f6a310..190a68d52 100644 --- a/cmd/podman/system/connection/list.go +++ b/cmd/podman/system/connection/list.go @@ -8,6 +8,7 @@ import ( "github.com/containers/common/pkg/completion" "github.com/containers/common/pkg/config" "github.com/containers/common/pkg/report" + "github.com/containers/common/pkg/util" "github.com/containers/podman/v4/cmd/podman/common" "github.com/containers/podman/v4/cmd/podman/registry" "github.com/containers/podman/v4/cmd/podman/system" @@ -29,16 +30,36 @@ var ( RunE: list, TraverseChildren: false, } + inspectCmd = &cobra.Command{ + Use: "inspect [options] [CONTEXT] [CONTEXT...]", + Short: "Inspect destination for a Podman service(s)", + ValidArgsFunction: completion.AutocompleteNone, + RunE: inspect, + } ) func init() { + initFlags := func(cmd *cobra.Command) { + cmd.Flags().StringP("format", "f", "", "Custom Go template for printing connections") + _ = cmd.RegisterFlagCompletionFunc("format", common.AutocompleteFormat(&namedDestination{})) + cmd.Flags().BoolP("quiet", "q", false, "Custom Go template for printing connections") + } + + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: listCmd, + Parent: system.ContextCmd, + }) registry.Commands = append(registry.Commands, registry.CliCommand{ Command: listCmd, Parent: system.ConnectionCmd, }) + initFlags(listCmd) - listCmd.Flags().String("format", "", "Custom Go template for printing connections") - _ = listCmd.RegisterFlagCompletionFunc("format", common.AutocompleteFormat(&namedDestination{})) + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: inspectCmd, + Parent: system.ContextCmd, + }) + initFlags(inspectCmd) } type namedDestination struct { @@ -48,13 +69,34 @@ type namedDestination struct { } func list(cmd *cobra.Command, _ []string) error { + return inspect(cmd, nil) +} + +func inspect(cmd *cobra.Command, args []string) error { cfg, err := config.ReadCustomConfig() if err != nil { return err } + format := cmd.Flag("format").Value.String() + if format == "" && args != nil { + format = "json" + } + + quiet, err := cmd.Flags().GetBool("quiet") + if err != nil { + return err + } rows := make([]namedDestination, 0) for k, v := range cfg.Engine.ServiceDestinations { + if args != nil && !util.StringInSlice(k, args) { + continue + } + + if quiet { + fmt.Println(k) + continue + } def := false if k == cfg.Engine.ActiveService { def = true @@ -71,6 +113,10 @@ func list(cmd *cobra.Command, _ []string) error { rows = append(rows, r) } + if quiet { + return nil + } + sort.Slice(rows, func(i, j int) bool { return rows[i].Name < rows[j].Name }) @@ -78,7 +124,7 @@ func list(cmd *cobra.Command, _ []string) error { rpt := report.New(os.Stdout, cmd.Name()) defer rpt.Flush() - if report.IsJSON(cmd.Flag("format").Value.String()) { + if report.IsJSON(format) { buf, err := registry.JSONLibrary().MarshalIndent(rows, "", " ") if err == nil { fmt.Println(string(buf)) @@ -86,8 +132,8 @@ func list(cmd *cobra.Command, _ []string) error { return err } - if cmd.Flag("format").Changed { - rpt, err = rpt.Parse(report.OriginUser, cmd.Flag("format").Value.String()) + if format != "" { + rpt, err = rpt.Parse(report.OriginUser, format) } else { rpt, err = rpt.Parse(report.OriginPodman, "{{range .}}{{.Name}}\t{{.URI}}\t{{.Identity}}\t{{.Default}}\n{{end -}}") diff --git a/cmd/podman/system/connection/remove.go b/cmd/podman/system/connection/remove.go index 29bf98c43..5ff0000d6 100644 --- a/cmd/podman/system/connection/remove.go +++ b/cmd/podman/system/connection/remove.go @@ -29,6 +29,11 @@ var ( ) func init() { + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: rmCmd, + Parent: system.ContextCmd, + }) + registry.Commands = append(registry.Commands, registry.CliCommand{ Command: rmCmd, Parent: system.ConnectionCmd, @@ -36,6 +41,9 @@ func init() { flags := rmCmd.Flags() flags.BoolVarP(&rmOpts.All, "all", "a", false, "Remove all connections") + + flags.BoolP("force", "f", false, "Ignored: for Docker compatibility") + _ = flags.MarkHidden("force") } func rm(cmd *cobra.Command, args []string) error { diff --git a/cmd/podman/system/context.go b/cmd/podman/system/context.go new file mode 100644 index 000000000..926e4a443 --- /dev/null +++ b/cmd/podman/system/context.go @@ -0,0 +1,28 @@ +package system + +import ( + "github.com/containers/podman/v4/cmd/podman/registry" + "github.com/containers/podman/v4/cmd/podman/validate" + "github.com/spf13/cobra" +) + +var ( + // ContextCmd skips creating engines (PersistentPreRunE/PersistentPostRunE are No-Op's) since + // sub-commands will obtain connection information to said engines + ContextCmd = &cobra.Command{ + Use: "context", + Short: "Manage remote API service destinations", + Long: `Manage remote API service destination information in podman configuration`, + PersistentPreRunE: validate.NoOp, + RunE: validate.SubCommandExists, + PersistentPostRunE: validate.NoOp, + Hidden: true, + TraverseChildren: false, + } +) + +func init() { + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: ContextCmd, + }) +} -- cgit v1.2.3-54-g00ecf