podman-remote pod top|stats

this is the final enablement for the pod subcommand.  it includes the
ability to run podman-remote pod top and stats.

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

6 files changed, 27 insertions, 74 deletions

diff --git a/cmd/podman/commands.go b/cmd/podman/commands.go
index c261e54e2..483ada332 100644
--- a/cmd/podman/commands.go
+++ b/cmd/podman/commands.go
@@ -85,14 +85,6 @@ func getContainerSubCommands() []*cobra.Command {
 	}
 }
 
-// Commands that the local client implements
-func getPodSubCommands() []*cobra.Command {
-	return []*cobra.Command{
-		_podStatsCommand,
-		_podTopCommand,
-	}
-}
-
 func getGenerateSubCommands() []*cobra.Command {
 	return []*cobra.Command{
 		_containerKubeCommand,
diff --git a/cmd/podman/commands_remoteclient.go b/cmd/podman/commands_remoteclient.go
index 081043b25..a278761c1 100644
--- a/cmd/podman/commands_remoteclient.go
+++ b/cmd/podman/commands_remoteclient.go
@@ -29,11 +29,6 @@ func getContainerSubCommands() []*cobra.Command {
 }
 
 // commands that only the remoteclient implements
-func getPodSubCommands() []*cobra.Command {
-	return []*cobra.Command{}
-}
-
-// commands that only the remoteclient implements
 func getGenerateSubCommands() []*cobra.Command {
 	return []*cobra.Command{}
 }
diff --git a/cmd/podman/pod.go b/cmd/podman/pod.go
index c1350bd4d..7067f2429 100644
--- a/cmd/podman/pod.go
+++ b/cmd/podman/pod.go
@@ -29,12 +29,13 @@ var podSubCommands = []*cobra.Command{
 	_podRestartCommand,
 	_podRmCommand,
 	_podStartCommand,
+	_podStatsCommand,
 	_podStopCommand,
+	_podTopCommand,
 	_podUnpauseCommand,
 }
 
 func init() {
 	podCommand.AddCommand(podSubCommands...)
-	podCommand.AddCommand(getPodSubCommands()...)
 	podCommand.SetUsageTemplate(UsageTemplate())
 }
diff --git a/cmd/podman/pod_stats.go b/cmd/podman/pod_stats.go
index f5edd21f8..2761ce9cc 100644
--- a/cmd/podman/pod_stats.go
+++ b/cmd/podman/pod_stats.go
@@ -13,8 +13,8 @@ import (
 	tm "github.com/buger/goterm"
 	"github.com/containers/libpod/cmd/podman/cliconfig"
 	"github.com/containers/libpod/cmd/podman/formats"
-	"github.com/containers/libpod/cmd/podman/libpodruntime"
 	"github.com/containers/libpod/libpod"
+	"github.com/containers/libpod/pkg/adapter"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/ulule/deepcopier"
@@ -51,10 +51,6 @@ func init() {
 }
 
 func podStatsCmd(c *cliconfig.PodStatsValues) error {
-	var (
-		podFunc func() ([]*libpod.Pod, error)
-	)
-
 	format := c.Format
 	all := c.All
 	latest := c.Latest
@@ -76,7 +72,7 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 		all = true
 	}
 
-	runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
+	runtime, err := adapter.GetRuntime(&c.PodmanCommand)
 	if err != nil {
 		return errors.Wrapf(err, "could not get runtime")
 	}
@@ -87,29 +83,12 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 		times = 1
 	}
 
-	if len(c.InputArgs) > 0 {
-		podFunc = func() ([]*libpod.Pod, error) { return getPodsByList(c.InputArgs, runtime) }
-	} else if latest {
-		podFunc = func() ([]*libpod.Pod, error) {
-			latestPod, err := runtime.GetLatestPod()
-			if err != nil {
-				return nil, err
-			}
-			return []*libpod.Pod{latestPod}, err
-		}
-	} else if all {
-		podFunc = runtime.GetAllPods
-	} else {
-		podFunc = runtime.GetRunningPods
-	}
-
-	pods, err := podFunc()
+	pods, err := runtime.GetStatPods(c)
 	if err != nil {
 		return errors.Wrapf(err, "unable to get a list of pods")
 	}
-
 	// First we need to get an initial pass of pod/ctr stats (these are not printed)
-	var podStats []*libpod.PodContainerStats
+	var podStats []*adapter.PodContainerStats
 	for _, p := range pods {
 		cons, err := p.AllContainersByID()
 		if err != nil {
@@ -120,7 +99,7 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 		for _, c := range cons {
 			emptyStats[c] = &libpod.ContainerStats{}
 		}
-		ps := libpod.PodContainerStats{
+		ps := adapter.PodContainerStats{
 			Pod:            p,
 			ContainerStats: emptyStats,
 		}
@@ -128,10 +107,10 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 	}
 
 	// Create empty container stat results for our first pass
-	var previousPodStats []*libpod.PodContainerStats
+	var previousPodStats []*adapter.PodContainerStats
 	for _, p := range pods {
 		cs := make(map[string]*libpod.ContainerStats)
-		pcs := libpod.PodContainerStats{
+		pcs := adapter.PodContainerStats{
 			Pod:            p,
 			ContainerStats: cs,
 		}
@@ -164,7 +143,7 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 	}
 
 	for i := 0; i < times; i += step {
-		var newStats []*libpod.PodContainerStats
+		var newStats []*adapter.PodContainerStats
 		for _, p := range pods {
 			prevStat := getPreviousPodContainerStats(p.ID(), previousPodStats)
 			newPodStats, err := p.GetPodStats(prevStat)
@@ -174,7 +153,7 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 			if err != nil {
 				return err
 			}
-			newPod := libpod.PodContainerStats{
+			newPod := adapter.PodContainerStats{
 				Pod:            p,
 				ContainerStats: newPodStats,
 			}
@@ -202,7 +181,7 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 		time.Sleep(time.Second)
 		previousPodStats := new([]*libpod.PodContainerStats)
 		deepcopier.Copy(newStats).To(previousPodStats)
-		pods, err = podFunc()
+		pods, err = runtime.GetStatPods(c)
 		if err != nil {
 			return err
 		}
@@ -211,7 +190,7 @@ func podStatsCmd(c *cliconfig.PodStatsValues) error {
 	return nil
 }
 
-func podContainerStatsToPodStatOut(stats []*libpod.PodContainerStats) []*podStatOut {
+func podContainerStatsToPodStatOut(stats []*adapter.PodContainerStats) []*podStatOut {
 	var out []*podStatOut
 	for _, p := range stats {
 		for _, c := range p.ContainerStats {
@@ -295,7 +274,7 @@ func outputToStdOut(stats []*podStatOut) {
 	w.Flush()
 }
 
-func getPreviousPodContainerStats(podID string, prev []*libpod.PodContainerStats) map[string]*libpod.ContainerStats {
+func getPreviousPodContainerStats(podID string, prev []*adapter.PodContainerStats) map[string]*libpod.ContainerStats {
 	for _, p := range prev {
 		if podID == p.Pod.ID() {
 			return p.ContainerStats
@@ -304,7 +283,7 @@ func getPreviousPodContainerStats(podID string, prev []*libpod.PodContainerStats
 	return map[string]*libpod.ContainerStats{}
 }
 
-func outputJson(stats []*libpod.PodContainerStats) error {
+func outputJson(stats []*adapter.PodContainerStats) error {
 	b, err := json.MarshalIndent(&stats, "", "     ")
 	if err != nil {
 		return err
diff --git a/cmd/podman/pod_top.go b/cmd/podman/pod_top.go
index 6a26e3dff..c5383d376 100644
--- a/cmd/podman/pod_top.go
+++ b/cmd/podman/pod_top.go
@@ -2,13 +2,12 @@ package main
 
 import (
 	"fmt"
+	"github.com/containers/libpod/pkg/adapter"
 	"os"
 	"strings"
 	"text/tabwriter"
 
 	"github.com/containers/libpod/cmd/podman/cliconfig"
-	"github.com/containers/libpod/cmd/podman/libpodruntime"
-	"github.com/containers/libpod/cmd/podman/shared"
 	"github.com/containers/libpod/libpod"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -50,8 +49,9 @@ func init() {
 }
 
 func podTopCmd(c *cliconfig.PodTopValues) error {
-	var pod *libpod.Pod
-	var err error
+	var (
+		descriptors []string
+	)
 	args := c.InputArgs
 
 	if c.ListDescriptors {
@@ -67,39 +67,22 @@ func podTopCmd(c *cliconfig.PodTopValues) error {
 		return errors.Errorf("you must provide the name or id of a running pod")
 	}
 
-	runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
+	runtime, err := adapter.GetRuntime(&c.PodmanCommand)
 	if err != nil {
 		return errors.Wrapf(err, "error creating libpod runtime")
 	}
 	defer runtime.Shutdown(false)
 
-	var descriptors []string
 	if c.Latest {
 		descriptors = args
-		pod, err = runtime.GetLatestPod()
 	} else {
 		descriptors = args[1:]
-		pod, err = runtime.LookupPod(args[0])
 	}
-
-	if err != nil {
-		return errors.Wrapf(err, "unable to lookup requested container")
-	}
-
-	podStatus, err := shared.GetPodStatus(pod)
-	if err != nil {
-		return err
-	}
-	if podStatus != "Running" {
-		return errors.Errorf("pod top can only be used on pods with at least one running container")
-	}
-
-	psOutput, err := pod.GetPodPidInformation(descriptors)
+	w := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0)
+	psOutput, err := runtime.PodTop(c, descriptors)
 	if err != nil {
 		return err
 	}
-
-	w := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0)
 	for _, proc := range psOutput {
 		fmt.Fprintln(w, proc)
 	}
diff --git a/cmd/podman/varlink/io.podman.varlink b/cmd/podman/varlink/io.podman.varlink
index 73e6c15f9..a50b7dd13 100644
--- a/cmd/podman/varlink/io.podman.varlink
+++ b/cmd/podman/varlink/io.podman.varlink
@@ -549,6 +549,10 @@ method ExportContainer(name: string, path: string) -> (tarfile: string)
 # ~~~
 method GetContainerStats(name: string) -> (container: ContainerStats)
 
+# GetContainerStatsWithHistory takes a previous set of container statistics and uses libpod functions
+# to calculate the containers statistics based on current and previous measurements.
+method GetContainerStatsWithHistory(previousStats: ContainerStats) -> (container: ContainerStats)
+
 # This method has not be implemented yet.
 # method ResizeContainerTty() -> (notimplemented: NotImplemented)
 
@@ -952,8 +956,7 @@ method RemovePod(name: string, force: bool) -> (pod: string)
 # This method has not be implemented yet.
 # method WaitPod() -> (notimplemented: NotImplemented)
 
-# This method has not been implemented yet.
-# method TopPod() -> (notimplemented: NotImplemented)
+method TopPod(pod: string, latest: bool, descriptors: []string) -> (stats: []string)
 
 # GetPodStats takes the name or ID of a pod and returns a pod name and slice of ContainerStats structure which
 # contains attributes like memory and cpu usage.  If the pod cannot be found, a [PodNotFound](#PodNotFound)