Merge pull request #5770 from baude/v2events

podmanv2 events

cmd/podmanV2/system/events.go

@@ -0,0 +1,104 @@
+package system
+
+import (
+	"bufio"
+	"context"
+	"html/template"
+	"os"
+
+	"github.com/containers/buildah/pkg/formats"
+	"github.com/containers/libpod/cmd/podmanV2/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,
+		PersistentPreRunE: preRunE,
+		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
+}

pkg/api/handlers/types.go

@@ -180,6 +180,31 @@ type ExecCreateResponse struct {
 	docker.IDResponse
 }
 
+func (e *Event) ToLibpodEvent() *events.Event {
+	exitCode, err := strconv.Atoi(e.Actor.Attributes["containerExitCode"])
+	if err != nil {
+		return nil
+	}
+	status, err := events.StringToStatus(e.Action)
+	if err != nil {
+		return nil
+	}
+	t, err := events.StringToType(e.Type)
+	if err != nil {
+		return nil
+	}
+	lp := events.Event{
+		ContainerExitCode: exitCode,
+		ID:                e.Actor.ID,
+		Image:             e.Actor.Attributes["image"],
+		Name:              e.Actor.Attributes["name"],
+		Status:            status,
+		Time:              time.Unix(e.Time, e.TimeNano),
+		Type:              t,
+	}
+	return &lp
+}
+
 func EventToApiEvent(e *events.Event) *Event {
 	return &Event{dockerEvents.Message{
 		Type:   e.Type.String(),

pkg/domain/entities/engine_container.go

@@ -36,6 +36,7 @@ type ContainerEngine interface {
 	ContainerUnmount(ctx context.Context, nameOrIds []string, options ContainerUnmountOptions) ([]*ContainerUnmountReport, error)
 	ContainerUnpause(ctx context.Context, namesOrIds []string, options PauseUnPauseOptions) ([]*PauseUnpauseReport, error)
 	ContainerWait(ctx context.Context, namesOrIds []string, options WaitOptions) ([]WaitReport, error)
+	Events(ctx context.Context, opts EventsOptions) error
 	HealthCheckRun(ctx context.Context, nameOrId string, options HealthCheckOptions) (*define.HealthCheckResults, error)
 	Info(ctx context.Context) (*define.Info, error)
 	PodCreate(ctx context.Context, opts PodCreateOptions) (*PodCreateReport, error)

pkg/domain/entities/types.go

@@ -3,6 +3,7 @@ package entities
 import (
 	"net"
 
+	"github.com/containers/libpod/libpod/events"
 	"github.com/containers/libpod/pkg/specgen"
 	"github.com/containers/storage/pkg/archive"
 	"github.com/cri-o/ocicni/pkg/ocicni"
@@ -62,3 +63,12 @@ type DiffOptions struct {
 type DiffReport struct {
 	Changes []archive.Change
 }
+
+type EventsOptions struct {
+	FromStart bool
+	EventChan chan *events.Event
+	Filter    []string
+	Stream    bool
+	Since     string
+	Until     string
+}

pkg/domain/infra/abi/events.go

@@ -0,0 +1,18 @@
+//+build ABISupport
+
+package abi
+
+import (
+	"context"
+
+	"github.com/containers/libpod/libpod/events"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/sirupsen/logrus"
+)
+
+func (ic *ContainerEngine) Events(ctx context.Context, opts entities.EventsOptions) error {
+	readOpts := events.ReadOptions{FromStart: opts.FromStart, Stream: opts.Stream, Filters: opts.Filter, EventChannel: opts.EventChan, Since: opts.Since, Until: opts.Until}
+	err := ic.Libpod.Events(readOpts)
+	logrus.Error(err)
+	return err
+}

pkg/domain/infra/tunnel/events.go

@@ -0,0 +1,31 @@
+package tunnel
+
+import (
+	"context"
+	"strings"
+
+	"github.com/containers/libpod/pkg/api/handlers"
+	"github.com/containers/libpod/pkg/bindings/system"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
+)
+
+func (ic *ContainerEngine) Events(ctx context.Context, opts entities.EventsOptions) error {
+	filters := make(map[string][]string)
+	if len(opts.Filter) > 0 {
+		for _, filter := range opts.Filter {
+			split := strings.Split(filter, "=")
+			if len(split) < 2 {
+				return errors.Errorf("invalid filter %q", filter)
+			}
+			filters[split[0]] = append(filters[split[0]], strings.Join(split[1:], "="))
+		}
+	}
+	binChan := make(chan handlers.Event)
+	go func() {
+		for e := range binChan {
+			opts.EventChan <- e.ToLibpodEvent()
+		}
+	}()
+	return system.Events(ic.ClientCxt, binChan, nil, &opts.Since, &opts.Until, filters)
+}