Podman V2 birth

remote podman v1 and replace with podman v2.

Signed-off-by: Brent Baude <bbaude@redhat.com>

6 files changed, 498 insertions, 0 deletions

diff --git a/cmd/podman/system/events.go b/cmd/podman/system/events.go
new file mode 100644
index 000000000..3c1943b55
--- /dev/null
+++ b/cmd/podman/system/events.go
@@ -0,0 +1,103 @@
+package system
+
+import (
+	"bufio"
+	"context"
+	"html/template"
+	"os"
+
+	"github.com/containers/buildah/pkg/formats"
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/libpod/events"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+var (
+	eventsDescription = "Monitor podman events"
+	eventsCommand     = &cobra.Command{
+		Use:   "events",
+		Args:  cobra.NoArgs,
+		Short: "Show podman events",
+		Long:  eventsDescription,
+		RunE:  eventsCmd,
+		Example: `podman events
+  podman events --filter event=create
+  podman events --since 1h30s`,
+	}
+)
+
+var (
+	eventOptions entities.EventsOptions
+	eventFormat  string
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: eventsCommand,
+	})
+	flags := eventsCommand.Flags()
+	flags.StringArrayVar(&eventOptions.Filter, "filter", []string{}, "filter output")
+	flags.StringVar(&eventFormat, "format", "", "format the output using a Go template")
+	flags.BoolVar(&eventOptions.Stream, "stream", true, "stream new events; for testing only")
+	flags.StringVar(&eventOptions.Since, "since", "", "show all events created since timestamp")
+	flags.StringVar(&eventOptions.Until, "until", "", "show all events until timestamp")
+	_ = flags.MarkHidden("stream")
+}
+
+func eventsCmd(cmd *cobra.Command, args []string) error {
+	var (
+		err         error
+		eventsError error
+		tmpl        *template.Template
+	)
+	if eventFormat != formats.JSONString {
+		tmpl, err = template.New("events").Parse(eventFormat)
+		if err != nil {
+			return err
+		}
+	}
+	if len(eventOptions.Since) > 0 || len(eventOptions.Until) > 0 {
+		eventOptions.FromStart = true
+	}
+	eventChannel := make(chan *events.Event)
+	eventOptions.EventChan = eventChannel
+
+	go func() {
+		eventsError = registry.ContainerEngine().Events(context.Background(), eventOptions)
+	}()
+	if eventsError != nil {
+		return eventsError
+	}
+
+	w := bufio.NewWriter(os.Stdout)
+	for event := range eventChannel {
+		switch {
+		case eventFormat == formats.JSONString:
+			jsonStr, err := event.ToJSONString()
+			if err != nil {
+				return errors.Wrapf(err, "unable to format json")
+			}
+			if _, err := w.Write([]byte(jsonStr)); err != nil {
+				return err
+			}
+		case len(eventFormat) > 0:
+			if err := tmpl.Execute(w, event); err != nil {
+				return err
+			}
+		default:
+			if _, err := w.Write([]byte(event.ToHumanReadable())); err != nil {
+				return err
+			}
+		}
+		if _, err := w.Write([]byte("\n")); err != nil {
+			return err
+		}
+		if err := w.Flush(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
diff --git a/cmd/podman/system/info.go b/cmd/podman/system/info.go
new file mode 100644
index 000000000..aa0a66ffc
--- /dev/null
+++ b/cmd/podman/system/info.go
@@ -0,0 +1,73 @@
+package system
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"text/template"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/spf13/cobra"
+	"gopkg.in/yaml.v2"
+)
+
+var (
+	infoDescription = `Display information pertaining to the host, current storage stats, and build of podman.
+
+  Useful for the user and when reporting issues.
+`
+	infoCommand = &cobra.Command{
+		Use:     "info",
+		Args:    cobra.NoArgs,
+		Long:    infoDescription,
+		Short:   "Display podman system information",
+		RunE:    info,
+		Example: `podman info`,
+	}
+)
+
+var (
+	inFormat string
+	debug    bool
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: infoCommand,
+	})
+	flags := infoCommand.Flags()
+	flags.BoolVarP(&debug, "debug", "D", false, "Display additional debug information")
+	flags.StringVarP(&inFormat, "format", "f", "", "Change the output format to JSON or a Go template")
+}
+
+func info(cmd *cobra.Command, args []string) error {
+	info, err := registry.ContainerEngine().Info(registry.GetContext())
+	if err != nil {
+		return err
+	}
+
+	if inFormat == "json" {
+		b, err := json.MarshalIndent(info, "", "  ")
+		if err != nil {
+			return err
+		}
+		fmt.Println(string(b))
+		return nil
+	}
+	if !cmd.Flag("format").Changed {
+		b, err := yaml.Marshal(info)
+		if err != nil {
+			return err
+		}
+		fmt.Println(string(b))
+		return nil
+	}
+	tmpl, err := template.New("info").Parse(inFormat)
+	if err != nil {
+		return err
+	}
+	err = tmpl.Execute(os.Stdout, info)
+	return err
+}
diff --git a/cmd/podman/system/service.go b/cmd/podman/system/service.go
new file mode 100644
index 000000000..fa1a33faa
--- /dev/null
+++ b/cmd/podman/system/service.go
@@ -0,0 +1,124 @@
+package system
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/containers/libpod/pkg/rootless"
+	"github.com/containers/libpod/pkg/systemd"
+	"github.com/containers/libpod/pkg/util"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var (
+	srvDescription = `Run an API service
+
+Enable a listening service for API access to Podman commands.
+`
+
+	srvCmd = &cobra.Command{
+		Use:   "service [flags] [URI]",
+		Args:  cobra.MaximumNArgs(1),
+		Short: "Run API service",
+		Long:  srvDescription,
+		RunE:  service,
+		Example: `podman system service --time=0 unix:///tmp/podman.sock
+  podman system service --varlink --time=0 unix:///tmp/podman.sock`,
+	}
+
+	srvArgs = struct {
+		Timeout int64
+		Varlink bool
+	}{}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode},
+		Command: srvCmd,
+		Parent:  systemCmd,
+	})
+
+	flags := srvCmd.Flags()
+	flags.Int64VarP(&srvArgs.Timeout, "time", "t", 5, "Time until the service session expires in seconds.  Use 0 to disable the timeout")
+	flags.Int64Var(&srvArgs.Timeout, "timeout", 5, "Time until the service session expires in seconds.  Use 0 to disable the timeout")
+	flags.BoolVar(&srvArgs.Varlink, "varlink", false, "Use legacy varlink service instead of REST")
+
+	_ = flags.MarkDeprecated("varlink", "valink API is deprecated.")
+}
+
+func service(cmd *cobra.Command, args []string) error {
+	apiURI, err := resolveApiURI(args)
+	if err != nil {
+		return err
+	}
+	logrus.Infof("using API endpoint: \"%s\"", apiURI)
+
+	opts := entities.ServiceOptions{
+		URI:     apiURI,
+		Timeout: time.Duration(srvArgs.Timeout) * time.Second,
+		Command: cmd,
+	}
+
+	if srvArgs.Varlink {
+		return registry.ContainerEngine().VarlinkService(registry.GetContext(), opts)
+	}
+
+	logrus.Warn("This function is EXPERIMENTAL")
+	fmt.Fprintf(os.Stderr, "This function is EXPERIMENTAL.\n")
+	return registry.ContainerEngine().RestService(registry.GetContext(), opts)
+}
+
+func resolveApiURI(_url []string) (string, error) {
+
+	// When determining _*THE*_ listening endpoint --
+	// 1) User input wins always
+	// 2) systemd socket activation
+	// 3) rootless honors XDG_RUNTIME_DIR
+	// 4) if varlink -- adapter.DefaultVarlinkAddress
+	// 5) lastly adapter.DefaultAPIAddress
+
+	if _url == nil {
+		if v, found := os.LookupEnv("PODMAN_SOCKET"); found {
+			_url = []string{v}
+		}
+	}
+
+	switch {
+	case len(_url) > 0:
+		return _url[0], nil
+	case systemd.SocketActivated():
+		logrus.Info("using systemd socket activation to determine API endpoint")
+		return "", nil
+	case rootless.IsRootless():
+		xdg, err := util.GetRuntimeDir()
+		if err != nil {
+			return "", err
+		}
+
+		socketName := "podman.sock"
+		if srvArgs.Varlink {
+			socketName = "io.podman"
+		}
+		socketDir := filepath.Join(xdg, "podman", socketName)
+		if _, err := os.Stat(filepath.Dir(socketDir)); err != nil {
+			if os.IsNotExist(err) {
+				if err := os.Mkdir(filepath.Dir(socketDir), 0755); err != nil {
+					return "", err
+				}
+			} else {
+				return "", err
+			}
+		}
+		return "unix:" + socketDir, nil
+	case srvArgs.Varlink:
+		return registry.DefaultVarlinkAddress, nil
+	default:
+		return registry.DefaultAPIAddress, nil
+	}
+}
diff --git a/cmd/podman/system/system.go b/cmd/podman/system/system.go
new file mode 100644
index 000000000..6d8c9ebc5
--- /dev/null
+++ b/cmd/podman/system/system.go
@@ -0,0 +1,25 @@
+package system
+
+import (
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/spf13/cobra"
+)
+
+var (
+	// Command: podman _system_
+	systemCmd = &cobra.Command{
+		Use:              "system",
+		Short:            "Manage podman",
+		Long:             "Manage podman",
+		TraverseChildren: true,
+		RunE:             registry.SubCommandExists,
+	}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: systemCmd,
+	})
+}
diff --git a/cmd/podman/system/varlink.go b/cmd/podman/system/varlink.go
new file mode 100644
index 000000000..c83f5ff76
--- /dev/null
+++ b/cmd/podman/system/varlink.go
@@ -0,0 +1,52 @@
+package system
+
+import (
+	"time"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/spf13/cobra"
+)
+
+var (
+	varlinkDescription = `Run varlink interface.  Podman varlink listens on the specified unix domain socket for incoming connects.
+
+  Tools speaking varlink protocol can remotely manage pods, containers and images.
+`
+	varlinkCmd = &cobra.Command{
+		Use:   "varlink [flags] [URI]",
+		Args:  cobra.MinimumNArgs(1),
+		Short: "Run varlink interface",
+		Long:  varlinkDescription,
+		RunE:  varlinkE,
+		Example: `podman varlink unix:/run/podman/io.podman
+  podman varlink --timeout 5000 unix:/run/podman/io.podman`,
+	}
+	varlinkArgs = struct {
+		Timeout int64
+	}{}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: varlinkCmd,
+	})
+	flags := varlinkCmd.Flags()
+	flags.Int64VarP(&varlinkArgs.Timeout, "time", "t", 1000, "Time until the varlink session expires in milliseconds.  Use 0 to disable the timeout")
+	flags.Int64Var(&varlinkArgs.Timeout, "timeout", 1000, "Time until the varlink session expires in milliseconds.  Use 0 to disable the timeout")
+
+}
+
+func varlinkE(cmd *cobra.Command, args []string) error {
+	uri := registry.DefaultVarlinkAddress
+	if len(args) > 0 {
+		uri = args[0]
+	}
+	opts := entities.ServiceOptions{
+		URI:     uri,
+		Timeout: time.Duration(varlinkArgs.Timeout) * time.Second,
+		Command: cmd,
+	}
+	return registry.ContainerEngine().VarlinkService(registry.GetContext(), opts)
+}
diff --git a/cmd/podman/system/version.go b/cmd/podman/system/version.go
new file mode 100644
index 000000000..5d3874de3
--- /dev/null
+++ b/cmd/podman/system/version.go
@@ -0,0 +1,121 @@
+package system
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"text/tabwriter"
+	"time"
+
+	"github.com/containers/buildah/pkg/formats"
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/libpod/define"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+var (
+	versionCommand = &cobra.Command{
+		Use:   "version",
+		Args:  cobra.NoArgs,
+		Short: "Display the Podman Version Information",
+		RunE:  version,
+		Annotations: map[string]string{
+			registry.ParentNSRequired: "",
+		},
+	}
+	versionFormat string
+)
+
+type versionStruct struct {
+	Client define.Version
+	Server define.Version
+}
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: versionCommand,
+	})
+	flags := versionCommand.Flags()
+	flags.StringVarP(&versionFormat, "format", "f", "", "Change the output format to JSON or a Go template")
+}
+
+func version(cmd *cobra.Command, args []string) error {
+	var (
+		v   versionStruct
+		err error
+	)
+	v.Client, err = define.GetVersion()
+	if err != nil {
+		return errors.Wrapf(err, "unable to determine version")
+	}
+	// TODO we need to discuss how to implement
+	// this more. current endpoints dont have a
+	// version endpoint.  maybe we use info?
+	//if remote {
+	//	v.Server, err = getRemoteVersion(c)
+	//	if err != nil {
+	//		return err
+	//	}
+	//} else {
+	v.Server = v.Client
+	//}
+
+	versionOutputFormat := versionFormat
+	if versionOutputFormat != "" {
+		if strings.Join(strings.Fields(versionOutputFormat), "") == "{{json.}}" {
+			versionOutputFormat = formats.JSONString
+		}
+		var out formats.Writer
+		switch versionOutputFormat {
+		case formats.JSONString:
+			out = formats.JSONStruct{Output: v}
+			return out.Out()
+		default:
+			out = formats.StdoutTemplate{Output: v, Template: versionOutputFormat}
+			err := out.Out()
+			if err != nil {
+				// On Failure, assume user is using older version of podman version --format and check client
+				out = formats.StdoutTemplate{Output: v.Client, Template: versionOutputFormat}
+				if err1 := out.Out(); err1 != nil {
+					return err
+				}
+			}
+		}
+		return nil
+	}
+	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
+	defer w.Flush()
+
+	if registry.IsRemote() {
+		if _, err := fmt.Fprintf(w, "Client:\n"); err != nil {
+			return err
+		}
+		formatVersion(w, v.Client)
+		if _, err := fmt.Fprintf(w, "\nServer:\n"); err != nil {
+			return err
+		}
+		formatVersion(w, v.Server)
+	} else {
+		formatVersion(w, v.Client)
+	}
+	return nil
+}
+
+func formatVersion(writer io.Writer, version define.Version) {
+	fmt.Fprintf(writer, "Version:\t%s\n", version.Version)
+	fmt.Fprintf(writer, "RemoteAPI Version:\t%d\n", version.RemoteAPIVersion)
+	fmt.Fprintf(writer, "Go Version:\t%s\n", version.GoVersion)
+	if version.GitCommit != "" {
+		fmt.Fprintf(writer, "Git Commit:\t%s\n", version.GitCommit)
+	}
+	// Prints out the build time in readable format
+	if version.Built != 0 {
+		fmt.Fprintf(writer, "Built:\t%s\n", time.Unix(version.Built, 0).Format(time.ANSIC))
+	}
+
+	fmt.Fprintf(writer, "OS/Arch:\t%s\n", version.OsArch)
+}