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author | Brent Baude <bbaude@redhat.com> | 2020-04-16 12:25:26 -0500 |
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committer | Brent Baude <bbaude@redhat.com> | 2020-04-16 15:53:58 -0500 |
commit | 241326a9a8c20ad7f2bcf651416b836e7778e090 (patch) | |
tree | 4001e8e47a022bb1b9bfbf2332c42e1aeb802f9e /cmd/podman/pod_stats.go | |
parent | 88c6fd06cd54fb9a8826306dfdf1a77e400de5de (diff) | |
download | podman-241326a9a8c20ad7f2bcf651416b836e7778e090.tar.gz podman-241326a9a8c20ad7f2bcf651416b836e7778e090.tar.bz2 podman-241326a9a8c20ad7f2bcf651416b836e7778e090.zip |
Podman V2 birth
remote podman v1 and replace with podman v2.
Signed-off-by: Brent Baude <bbaude@redhat.com>
Diffstat (limited to 'cmd/podman/pod_stats.go')
-rw-r--r-- | cmd/podman/pod_stats.go | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/cmd/podman/pod_stats.go b/cmd/podman/pod_stats.go deleted file mode 100644 index 297603410..000000000 --- a/cmd/podman/pod_stats.go +++ /dev/null @@ -1,286 +0,0 @@ -package main - -import ( - "fmt" - "html/template" - "os" - "reflect" - "strings" - "text/tabwriter" - "time" - - tm "github.com/buger/goterm" - "github.com/containers/buildah/pkg/formats" - "github.com/containers/libpod/cmd/podman/cliconfig" - "github.com/containers/libpod/libpod" - "github.com/containers/libpod/libpod/define" - "github.com/containers/libpod/pkg/adapter" - "github.com/containers/libpod/pkg/cgroups" - "github.com/containers/libpod/pkg/rootless" - "github.com/pkg/errors" - "github.com/spf13/cobra" -) - -var ( - podStatsCommand cliconfig.PodStatsValues - podStatsDescription = `For each specified pod this command will display percentage of CPU, memory, network I/O, block I/O and PIDs for containers in one the pods.` - - _podStatsCommand = &cobra.Command{ - Use: "stats [flags] [POD...]", - Short: "Display a live stream of resource usage statistics for the containers in one or more pods", - Long: podStatsDescription, - RunE: func(cmd *cobra.Command, args []string) error { - podStatsCommand.InputArgs = args - podStatsCommand.GlobalFlags = MainGlobalOpts - podStatsCommand.Remote = remoteclient - return podStatsCmd(&podStatsCommand) - }, - Example: `podman stats -a --no-stream - podman stats --no-reset ctrID - podman stats --no-stream --format "table {{.ID}} {{.Name}} {{.MemUsage}}" ctrID`, - } -) - -func init() { - podStatsCommand.Command = _podStatsCommand - podStatsCommand.SetHelpTemplate(HelpTemplate()) - podStatsCommand.SetUsageTemplate(UsageTemplate()) - flags := podStatsCommand.Flags() - flags.BoolVarP(&podStatsCommand.All, "all", "a", false, "Provide stats for all running pods") - flags.StringVar(&podStatsCommand.Format, "format", "", "Pretty-print container statistics to JSON or using a Go template") - flags.BoolVarP(&podStatsCommand.Latest, "latest", "l", false, "Provide stats on the latest pod podman is aware of") - flags.BoolVar(&podStatsCommand.NoStream, "no-stream", false, "Disable streaming stats and only pull the first result, default setting is false") - flags.BoolVar(&podStatsCommand.NoReset, "no-reset", false, "Disable resetting the screen between intervals") - markFlagHiddenForRemoteClient("latest", flags) -} - -func podStatsCmd(c *cliconfig.PodStatsValues) error { - if rootless.IsRootless() { - unified, err := cgroups.IsCgroup2UnifiedMode() - if err != nil { - return err - } - if !unified { - return errors.New("stats is not supported in rootless mode without cgroups v2") - } - } - - format := c.Format - all := c.All - latest := c.Latest - ctr := 0 - if all { - ctr += 1 - } - if latest { - ctr += 1 - } - if len(c.InputArgs) > 0 { - ctr += 1 - } - - if ctr > 1 { - return errors.Errorf("--all, --latest and containers cannot be used together") - } - - runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand) - if err != nil { - return errors.Wrapf(err, "could not get runtime") - } - defer runtime.DeferredShutdown(false) - - times := -1 - if c.NoStream { - times = 1 - } - - pods, err := runtime.GetStatPods(c) - if err != nil { - return errors.Wrapf(err, "unable to get a list of pods") - } - - // Create empty container stat results for our first pass - var previousPodStats []*adapter.PodContainerStats - for _, p := range pods { - cs := make(map[string]*libpod.ContainerStats) - pcs := adapter.PodContainerStats{ - Pod: p, - ContainerStats: cs, - } - previousPodStats = append(previousPodStats, &pcs) - } - - step := 1 - if times == -1 { - times = 1 - step = 0 - } - - headerNames := make(map[string]string) - if c.Format != "" { - // Make a map of the field names for the headers - v := reflect.ValueOf(podStatOut{}) - t := v.Type() - for i := 0; i < t.NumField(); i++ { - value := strings.ToUpper(splitCamelCase(t.Field(i).Name)) - switch value { - case "CPU", "MEM": - value += " %" - case "MEM USAGE": - value = "MEM USAGE / LIMIT" - } - headerNames[t.Field(i).Name] = value - } - } - - for i := 0; i < times; i += step { - var newStats []*adapter.PodContainerStats - for _, p := range pods { - prevStat := getPreviousPodContainerStats(p.ID(), previousPodStats) - newPodStats, err := p.GetPodStats(prevStat) - if errors.Cause(err) == define.ErrNoSuchPod { - continue - } - if err != nil { - return err - } - newPod := adapter.PodContainerStats{ - Pod: p, - ContainerStats: newPodStats, - } - newStats = append(newStats, &newPod) - } - //Output - if strings.ToLower(format) != formats.JSONString && !c.NoReset { - tm.Clear() - tm.MoveCursor(1, 1) - tm.Flush() - } - if strings.ToLower(format) == formats.JSONString { - if err := outputJson(newStats); err != nil { - return err - } - - } else { - results := podContainerStatsToPodStatOut(newStats) - if len(format) == 0 { - outputToStdOut(results) - } else if err := printPSFormat(c.Format, results, headerNames); err != nil { - return err - } - } - time.Sleep(time.Second) - previousPodStats := new([]*libpod.PodContainerStats) - if err := libpod.JSONDeepCopy(newStats, previousPodStats); err != nil { - return err - } - pods, err = runtime.GetStatPods(c) - if err != nil { - return err - } - } - - return nil -} - -func podContainerStatsToPodStatOut(stats []*adapter.PodContainerStats) []*podStatOut { - var out []*podStatOut - for _, p := range stats { - for _, c := range p.ContainerStats { - o := podStatOut{ - CPU: floatToPercentString(c.CPU), - MemUsage: combineHumanValues(c.MemUsage, c.MemLimit), - Mem: floatToPercentString(c.MemPerc), - NetIO: combineHumanValues(c.NetInput, c.NetOutput), - BlockIO: combineHumanValues(c.BlockInput, c.BlockOutput), - PIDS: pidsToString(c.PIDs), - CID: c.ContainerID[:12], - Name: c.Name, - Pod: p.Pod.ID()[:12], - } - out = append(out, &o) - } - } - return out -} - -type podStatOut struct { - CPU string - MemUsage string - Mem string - NetIO string - BlockIO string - PIDS string - Pod string - CID string - Name string -} - -func printPSFormat(format string, stats []*podStatOut, headerNames map[string]string) error { - if len(stats) == 0 { - return nil - } - - // Use a tabwriter to align column format - w := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0) - // Spit out the header if "table" is present in the format - if strings.HasPrefix(format, "table") { - hformat := strings.Replace(strings.TrimSpace(format[5:]), " ", "\t", -1) - format = hformat - headerTmpl, err := template.New("header").Parse(hformat) - if err != nil { - return err - } - if err := headerTmpl.Execute(w, headerNames); err != nil { - return err - } - fmt.Fprintln(w, "") - } - - // Spit out the data rows now - dataTmpl, err := template.New("data").Parse(format) - if err != nil { - return err - } - for _, container := range stats { - if err := dataTmpl.Execute(w, container); err != nil { - return err - } - fmt.Fprintln(w, "") - } - // Flush the writer - return w.Flush() - -} - -func outputToStdOut(stats []*podStatOut) { - w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0) - outFormat := "%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n" - fmt.Fprintf(w, outFormat, "POD", "CID", "NAME", "CPU %", "MEM USAGE/ LIMIT", "MEM %", "NET IO", "BLOCK IO", "PIDS") - for _, i := range stats { - if len(stats) == 0 { - fmt.Fprintf(w, outFormat, i.Pod, "--", "--", "--", "--", "--", "--", "--", "--") - } else { - fmt.Fprintf(w, outFormat, i.Pod, i.CID, i.Name, i.CPU, i.MemUsage, i.Mem, i.NetIO, i.BlockIO, i.PIDS) - } - } - w.Flush() -} - -func getPreviousPodContainerStats(podID string, prev []*adapter.PodContainerStats) map[string]*libpod.ContainerStats { - for _, p := range prev { - if podID == p.Pod.ID() { - return p.ContainerStats - } - } - return map[string]*libpod.ContainerStats{} -} - -func outputJson(stats []*adapter.PodContainerStats) error { - b, err := json.MarshalIndent(&stats, "", " ") - if err != nil { - return err - } - fmt.Println(string(b)) - return nil -} |