1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
package pods
import (
"context"
"fmt"
"os"
"time"
"github.com/buger/goterm"
"github.com/containers/common/pkg/report"
"github.com/containers/podman/v3/cmd/podman/common"
"github.com/containers/podman/v3/cmd/podman/registry"
"github.com/containers/podman/v3/cmd/podman/validate"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/spf13/cobra"
)
type podStatsOptionsWrapper struct {
entities.PodStatsOptions
// Format - pretty-print to JSON or a go template.
Format string
// NoReset - do not reset the screen when streaming.
NoReset bool
// NoStream - do not stream stats but write them once.
NoStream bool
}
var (
statsOptions = podStatsOptionsWrapper{}
statsDescription = `Display the containers' resource-usage statistics of one or more running pod`
// Command: podman pod _pod_
statsCmd = &cobra.Command{
Use: "stats [options] [POD...]",
Short: "Display a live stream of resource usage statistics for the containers in one or more pods",
Long: statsDescription,
RunE: stats,
ValidArgsFunction: common.AutocompletePodsRunning,
Example: `podman pod stats
podman pod stats a69b23034235 named-pod
podman pod stats --latest
podman pod stats --all`,
}
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: statsCmd,
Parent: podCmd,
})
flags := statsCmd.Flags()
flags.BoolVarP(&statsOptions.All, "all", "a", false, "Provide stats for all pods")
formatFlagName := "format"
flags.StringVar(&statsOptions.Format, formatFlagName, "", "Pretty-print container statistics to JSON or using a Go template")
_ = statsCmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteFormat(entities.PodStatsReport{}))
flags.BoolVar(&statsOptions.NoReset, "no-reset", false, "Disable resetting the screen when streaming")
flags.BoolVar(&statsOptions.NoStream, "no-stream", false, "Disable streaming stats and only pull the first result")
validate.AddLatestFlag(statsCmd, &statsOptions.Latest)
}
func stats(cmd *cobra.Command, args []string) error {
// Validate input.
if err := entities.ValidatePodStatsOptions(args, &statsOptions.PodStatsOptions); err != nil {
return err
}
rpt := report.New(os.Stdout, cmd.Name())
defer rpt.Flush()
var err error
doJSON := report.IsJSON(statsOptions.Format)
if !doJSON {
if cmd.Flags().Changed("format") {
rpt, err = rpt.Parse(report.OriginUser, statsOptions.Format)
if err != nil {
return err
}
} else {
rpt = rpt.Init(os.Stdout, 12, 2, 2, ' ', 0)
rpt.Origin = report.OriginPodman
}
}
for ; ; time.Sleep(time.Second) {
reports, err := registry.ContainerEngine().PodStats(context.Background(), args, statsOptions.PodStatsOptions)
if err != nil {
return err
}
// Print the stats in the requested format and configuration.
if doJSON {
err = printJSONPodStats(reports)
} else {
if !statsOptions.NoReset {
goterm.Clear()
goterm.MoveCursor(1, 1)
goterm.Flush()
}
if report.OriginUser == rpt.Origin {
err = userTemplate(rpt, reports)
} else {
err = defaultTemplate(rpt, reports)
}
}
if err != nil {
return err
}
if statsOptions.NoStream {
break
}
}
return nil
}
func printJSONPodStats(stats []*entities.PodStatsReport) error {
b, err := json.MarshalIndent(&stats, "", " ")
if err != nil {
return err
}
fmt.Fprintf(os.Stdout, "%s\n", string(b))
return nil
}
func defaultTemplate(rpt *report.Formatter, stats []*entities.PodStatsReport) error {
outFormat := "%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n"
fmt.Fprintf(rpt.Writer(), outFormat, "POD", "CID", "NAME", "CPU %", "MEM USAGE/ LIMIT", "MEM %", "NET IO", "BLOCK IO", "PIDS")
if len(stats) == 0 {
fmt.Fprintf(rpt.Writer(), outFormat, "--", "--", "--", "--", "--", "--", "--", "--", "--")
} else {
for _, i := range stats {
fmt.Fprintf(rpt.Writer(), outFormat, i.Pod, i.CID, i.Name, i.CPU, i.MemUsage, i.Mem, i.NetIO, i.BlockIO, i.PIDS)
}
}
return rpt.Flush()
}
func userTemplate(rpt *report.Formatter, stats []*entities.PodStatsReport) error {
if len(stats) == 0 {
return nil
}
headers := report.Headers(entities.PodStatsReport{}, map[string]string{
"CPU": "CPU %",
"MemUsage": "MEM USAGE/ LIMIT",
"MemUsageBytes": "MEM USAGE/ LIMIT",
"MEM": "MEM %",
"NET IO": "NET IO",
"BlockIO": "BLOCK IO",
})
if err := rpt.Execute(headers); err != nil {
return err
}
if err := rpt.Execute(stats); err != nil {
return err
}
return rpt.Flush()
}
|
