summaryrefslogtreecommitdiff
path: root/cmd/podman/ps.go
blob: a5f862f8f8576f25deb2b541fa9101fc9bcad605 (plain)
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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
package main

import (
	"fmt"
	"reflect"
	"sort"
	"strconv"
	"strings"
	"time"

	"github.com/cri-o/ocicni/pkg/ocicni"
	"github.com/docker/go-units"
	"github.com/pkg/errors"
	"github.com/projectatomic/libpod/cmd/podman/batchcontainer"
	"github.com/projectatomic/libpod/cmd/podman/formats"
	"github.com/projectatomic/libpod/cmd/podman/libpodruntime"
	"github.com/projectatomic/libpod/libpod"
	"github.com/projectatomic/libpod/pkg/util"
	"github.com/sirupsen/logrus"
	"github.com/urfave/cli"
	"k8s.io/apimachinery/pkg/fields"
)

const mountTruncLength = 12

type psTemplateParams struct {
	ID            string
	Image         string
	Command       string
	CreatedAtTime time.Time
	Created       string
	Status        string
	Ports         string
	Size          string
	Names         string
	Labels        string
	Mounts        string
	PID           int
	Cgroup        string
	IPC           string
	MNT           string
	NET           string
	PIDNS         string
	User          string
	UTS           string
	Pod           string
}

// psJSONParams is used as a base structure for the psParams
// If template output is requested, psJSONParams will be converted to
// psTemplateParams.
// psJSONParams will be populated by data from libpod.Container,
// the members of the struct are the sama data types as their sources.
type psJSONParams struct {
	ID               string                        `json:"id"`
	Image            string                        `json:"image"`
	ImageID          string                        `json:"image_id"`
	Command          []string                      `json:"command"`
	ExitCode         int32                         `json:"exitCode"`
	Exited           bool                          `json:"exited"`
	CreatedAt        time.Time                     `json:"createdAt"`
	StartedAt        time.Time                     `json:"startedAt"`
	ExitedAt         time.Time                     `json:"exitedAt"`
	Status           string                        `json:"status"`
	PID              int                           `json:"PID"`
	Ports            []ocicni.PortMapping          `json:"ports"`
	Size             *batchcontainer.ContainerSize `json:"size,omitempty"`
	Names            string                        `json:"names"`
	Labels           fields.Set                    `json:"labels"`
	Mounts           []string                      `json:"mounts"`
	ContainerRunning bool                          `json:"ctrRunning"`
	Namespaces       *batchcontainer.Namespace     `json:"namespace,omitempty"`
	Pod              string                        `json:"pod,omitempty"`
}

// Type declaration and functions for sorting the PS output
type psSorted []psJSONParams

func (a psSorted) Len() int      { return len(a) }
func (a psSorted) Swap(i, j int) { a[i], a[j] = a[j], a[i] }

type psSortedCommand struct{ psSorted }

func (a psSortedCommand) Less(i, j int) bool {
	return strings.Join(a.psSorted[i].Command, " ") < strings.Join(a.psSorted[j].Command, " ")
}

type psSortedCreated struct{ psSorted }

func (a psSortedCreated) Less(i, j int) bool {
	return a.psSorted[i].CreatedAt.After(a.psSorted[j].CreatedAt)
}

type psSortedId struct{ psSorted }

func (a psSortedId) Less(i, j int) bool { return a.psSorted[i].ID < a.psSorted[j].ID }

type psSortedImage struct{ psSorted }

func (a psSortedImage) Less(i, j int) bool { return a.psSorted[i].Image < a.psSorted[j].Image }

type psSortedNames struct{ psSorted }

func (a psSortedNames) Less(i, j int) bool { return a.psSorted[i].Names < a.psSorted[j].Names }

type psSortedPod struct{ psSorted }

func (a psSortedPod) Less(i, j int) bool { return a.psSorted[i].Pod < a.psSorted[j].Pod }

type psSortedRunningFor struct{ psSorted }

func (a psSortedRunningFor) Less(i, j int) bool {
	return a.psSorted[j].StartedAt.After(a.psSorted[i].StartedAt)
}

type psSortedStatus struct{ psSorted }

func (a psSortedStatus) Less(i, j int) bool { return a.psSorted[i].Status < a.psSorted[j].Status }

type psSortedSize struct{ psSorted }

func (a psSortedSize) Less(i, j int) bool {
	if a.psSorted[i].Size == nil || a.psSorted[j].Size == nil {
		return false
	}
	return a.psSorted[i].Size.RootFsSize < a.psSorted[j].Size.RootFsSize
}

var (
	psFlags = []cli.Flag{
		cli.BoolFlag{
			Name:  "all, a",
			Usage: "Show all the containers, default is only running containers",
		},
		cli.StringFlag{
			Name:  "filter, f",
			Usage: "Filter output based on conditions given",
		},
		cli.StringFlag{
			Name:  "format",
			Usage: "Pretty-print containers to JSON or using a Go template",
		},
		cli.IntFlag{
			Name:  "last, n",
			Usage: "Print the n last created containers (all states)",
			Value: -1,
		},
		cli.BoolFlag{
			Name:  "latest, l",
			Usage: "Show the latest container created (all states)",
		},
		cli.BoolFlag{
			Name:  "namespace, ns",
			Usage: "Display namespace information",
		},
		cli.BoolFlag{
			Name:  "no-trunc",
			Usage: "Display the extended information",
		},
		cli.BoolFlag{
			Name:  "pod",
			Usage: "Print the ID and name of the pod the containers are associated with",
		},
		cli.BoolFlag{
			Name:  "quiet, q",
			Usage: "Print the numeric IDs of the containers only",
		},
		cli.BoolFlag{
			Name:  "size, s",
			Usage: "Display the total file sizes",
		},
		cli.StringFlag{
			Name:  "sort",
			Usage: "Sort output by command, created, id, image, names, runningfor, size, or status",
			Value: "created",
		},
	}
	psDescription = "Prints out information about the containers"
	psCommand     = cli.Command{
		Name:                   "ps",
		Usage:                  "List containers",
		Description:            psDescription,
		Flags:                  psFlags,
		Action:                 psCmd,
		ArgsUsage:              "",
		UseShortOptionHandling: true,
	}
	lsCommand = cli.Command{
		Name:                   "ls",
		Usage:                  "List containers",
		Description:            psDescription,
		Flags:                  psFlags,
		Action:                 psCmd,
		ArgsUsage:              "",
		UseShortOptionHandling: true,
	}
)

func psCmd(c *cli.Context) error {
	if err := validateFlags(c, psFlags); err != nil {
		return err
	}

	if err := checkFlagsPassed(c); err != nil {
		return errors.Wrapf(err, "error with flags passed")
	}

	runtime, err := libpodruntime.GetRuntime(c)
	if err != nil {
		return errors.Wrapf(err, "error creating libpod runtime")
	}

	defer runtime.Shutdown(false)

	if len(c.Args()) > 0 {
		return errors.Errorf("too many arguments, ps takes no arguments")
	}

	format := genPsFormat(c.String("format"), c.Bool("quiet"), c.Bool("size"), c.Bool("namespace"), c.Bool("pod"))

	opts := batchcontainer.PsOptions{
		All:       c.Bool("all"),
		Filter:    c.String("filter"),
		Format:    format,
		Last:      c.Int("last"),
		Latest:    c.Bool("latest"),
		NoTrunc:   c.Bool("no-trunc"),
		Pod:       c.Bool("pod"),
		Quiet:     c.Bool("quiet"),
		Size:      c.Bool("size"),
		Namespace: c.Bool("namespace"),
		Sort:      c.String("sort"),
	}

	var filterFuncs []libpod.ContainerFilter
	// When we are dealing with latest or last=n, we need to
	// get all containers.
	if !opts.All && !opts.Latest && opts.Last < 1 {
		// only get running containers
		filterFuncs = append(filterFuncs, func(c *libpod.Container) bool {
			state, _ := c.State()
			return state == libpod.ContainerStateRunning
		})
	}

	if opts.Filter != "" {
		filters := strings.Split(opts.Filter, ",")
		for _, f := range filters {
			filterSplit := strings.SplitN(f, "=", 2)
			if len(filterSplit) < 2 {
				return errors.Errorf("filter input must be in the form of filter=value: %s is invalid", f)
			}
			generatedFunc, err := generateContainerFilterFuncs(filterSplit[0], filterSplit[1], runtime)
			if err != nil {
				return errors.Wrapf(err, "invalid filter")
			}
			filterFuncs = append(filterFuncs, generatedFunc)
		}
	}

	var outputContainers []*libpod.Container

	if !opts.Latest {
		// Get all containers
		containers, err := runtime.GetContainers(filterFuncs...)
		if err != nil {
			return err
		}

		// We only want the last few containers
		if opts.Last > 0 && opts.Last <= len(containers) {
			return errors.Errorf("--last not yet supported")
		} else {
			outputContainers = containers
		}
	} else {
		// Get just the latest container
		// Ignore filters
		latestCtr, err := runtime.GetLatestContainer()
		if err != nil {
			return err
		}

		outputContainers = []*libpod.Container{latestCtr}
	}

	return generatePsOutput(outputContainers, opts)
}

// checkFlagsPassed checks if mutually exclusive flags are passed together
func checkFlagsPassed(c *cli.Context) error {
	// latest, and last are mutually exclusive.
	if c.Int("last") >= 0 && c.Bool("latest") {
		return errors.Errorf("last and latest are mutually exclusive")
	}
	// Quiet conflicts with size, namespace, and format with a Go template
	if c.Bool("quiet") {
		if c.Bool("size") || c.Bool("namespace") || (c.IsSet("format") &&
			c.String("format") != formats.JSONString) {
			return errors.Errorf("quiet conflicts with size, namespace, and format with go template")
		}
	}
	// Size and namespace conflict with each other
	if c.Bool("size") && c.Bool("namespace") {
		return errors.Errorf("size and namespace options conflict")
	}
	return nil
}

func generateContainerFilterFuncs(filter, filterValue string, runtime *libpod.Runtime) (func(container *libpod.Container) bool, error) {
	switch filter {
	case "id":
		return func(c *libpod.Container) bool {
			return strings.Contains(c.ID(), filterValue)
		}, nil
	case "label":
		var filterArray []string = strings.Split(filterValue, "=")
		var filterKey string = filterArray[0]
		if len(filterArray) > 1 {
			filterValue = filterArray[1]
		} else {
			filterValue = ""
		}
		return func(c *libpod.Container) bool {
			for labelKey, labelValue := range c.Labels() {
				if labelKey == filterKey && ("" == filterValue || labelValue == filterValue) {
					return true
				}
			}
			return false
		}, nil
	case "name":
		return func(c *libpod.Container) bool {
			return strings.Contains(c.Name(), filterValue)
		}, nil
	case "exited":
		exitCode, err := strconv.ParseInt(filterValue, 10, 32)
		if err != nil {
			return nil, errors.Wrapf(err, "exited code out of range %q", filterValue)
		}
		return func(c *libpod.Container) bool {
			ec, exited, err := c.ExitCode()
			if ec == int32(exitCode) && err == nil && exited == true {
				return true
			}
			return false
		}, nil
	case "status":
		if !util.StringInSlice(filterValue, []string{"created", "restarting", "running", "paused", "exited", "unknown"}) {
			return nil, errors.Errorf("%s is not a valid status", filterValue)
		}
		return func(c *libpod.Container) bool {
			status, err := c.State()
			if err != nil {
				return false
			}
			state := status.String()
			if status == libpod.ContainerStateConfigured {
				state = "created"
			}
			return state == filterValue
		}, nil
	case "ancestor":
		// This needs to refine to match docker
		// - ancestor=(<image-name>[:tag]|<image-id>| ⟨image@digest⟩) - containers created from an image or a descendant.
		return func(c *libpod.Container) bool {
			containerConfig := c.Config()
			if strings.Contains(containerConfig.RootfsImageID, filterValue) || strings.Contains(containerConfig.RootfsImageName, filterValue) {
				return true
			}
			return false
		}, nil
	case "before":
		ctr, err := runtime.LookupContainer(filterValue)
		if err != nil {
			return nil, errors.Errorf("unable to find container by name or id of %s", filterValue)
		}
		containerConfig := ctr.Config()
		createTime := containerConfig.CreatedTime
		return func(c *libpod.Container) bool {
			cc := c.Config()
			return createTime.After(cc.CreatedTime)
		}, nil
	case "since":
		ctr, err := runtime.LookupContainer(filterValue)
		if err != nil {
			return nil, errors.Errorf("unable to find container by name or id of %s", filterValue)
		}
		containerConfig := ctr.Config()
		createTime := containerConfig.CreatedTime
		return func(c *libpod.Container) bool {
			cc := c.Config()
			return createTime.Before(cc.CreatedTime)
		}, nil
	case "volume":
		//- volume=(<volume-name>|<mount-point-destination>)
		return func(c *libpod.Container) bool {
			containerConfig := c.Config()
			var dest string
			arr := strings.Split(filterValue, ":")
			source := arr[0]
			if len(arr) == 2 {
				dest = arr[1]
			}
			for _, mount := range containerConfig.Spec.Mounts {
				if dest != "" && (mount.Source == source && mount.Destination == dest) {
					return true
				}
				if dest == "" && mount.Source == source {
					return true
				}
			}
			return false
		}, nil
	}
	return nil, errors.Errorf("%s is an invalid filter", filter)
}

// generate the template based on conditions given
func genPsFormat(format string, quiet, size, namespace, pod bool) string {
	if format != "" {
		// "\t" from the command line is not being recognized as a tab
		// replacing the string "\t" to a tab character if the user passes in "\t"
		return strings.Replace(format, `\t`, "\t", -1)
	}
	if quiet {
		return formats.IDString
	}
	podappend := ""
	if pod {
		podappend = "{{.Pod}}\t"
	}
	if namespace {
		return fmt.Sprintf("table {{.ID}}\t{{.Names}}\t%s{{.PID}}\t{{.Cgroup}}\t{{.IPC}}\t{{.MNT}}\t{{.NET}}\t{{.PIDNS}}\t{{.User}}\t{{.UTS}}\t", podappend)
	}
	format = "table {{.ID}}\t{{.Image}}\t{{.Command}}\t{{.Created}}\t{{.Status}}\t{{.Ports}}\t{{.Names}}\t"
	format += podappend
	if size {
		format += "{{.Size}}\t"
	}
	return format
}

func psToGeneric(templParams []psTemplateParams, JSONParams []psJSONParams) (genericParams []interface{}) {
	if len(templParams) > 0 {
		for _, v := range templParams {
			genericParams = append(genericParams, interface{}(v))
		}
		return
	}
	for _, v := range JSONParams {
		genericParams = append(genericParams, interface{}(v))
	}
	return
}

// generate the accurate header based on template given
func (p *psTemplateParams) headerMap() map[string]string {
	v := reflect.Indirect(reflect.ValueOf(p))
	values := make(map[string]string)

	for i := 0; i < v.NumField(); i++ {
		key := v.Type().Field(i).Name
		value := key
		if value == "ID" {
			value = "Container" + value
		}
		values[key] = strings.ToUpper(splitCamelCase(value))
	}
	return values
}

func sortPsOutput(sortBy string, psOutput psSorted) (psSorted, error) {
	switch sortBy {
	case "id":
		sort.Sort(psSortedId{psOutput})
	case "image":
		sort.Sort(psSortedImage{psOutput})
	case "command":
		sort.Sort(psSortedCommand{psOutput})
	case "runningfor":
		sort.Sort(psSortedRunningFor{psOutput})
	case "status":
		sort.Sort(psSortedStatus{psOutput})
	case "size":
		sort.Sort(psSortedSize{psOutput})
	case "names":
		sort.Sort(psSortedNames{psOutput})
	case "created":
		sort.Sort(psSortedCreated{psOutput})
	case "pod":
		sort.Sort(psSortedPod{psOutput})
	default:
		return nil, errors.Errorf("invalid option for --sort, options are: command, created, id, image, names, runningfor, size, or status")
	}
	return psOutput, nil
}

// getTemplateOutput returns the modified container information
func getTemplateOutput(psParams []psJSONParams, opts batchcontainer.PsOptions) ([]psTemplateParams, error) {
	var (
		psOutput          []psTemplateParams
		pod, status, size string
		ns                *batchcontainer.Namespace
	)
	// If the user is trying to filter based on size, or opted to sort on size
	// the size bool must be set.
	if strings.Contains(opts.Format, ".Size") || opts.Sort == "size" {
		opts.Size = true
	}
	if strings.Contains(opts.Format, ".Pod") || opts.Sort == "pod" {
		opts.Pod = true
	}

	for _, psParam := range psParams {
		// do we need this?
		imageName := psParam.Image
		ctrID := psParam.ID

		if opts.Namespace {
			ns = psParam.Namespaces
		}
		if opts.Size {
			if psParam.Size == nil {
				return nil, errors.Errorf("Container %s does not have a size struct", psParam.ID)
			}
			size = units.HumanSizeWithPrecision(float64(psParam.Size.RwSize), 3) + " (virtual " + units.HumanSizeWithPrecision(float64(psParam.Size.RootFsSize), 3) + ")"
		}
		if opts.Pod {
			pod = psParam.Pod
		}

		command := strings.Join(psParam.Command, " ")
		if !opts.NoTrunc {
			if len(command) > 20 {
				command = command[:19] + "..."
			}
		}
		ports := portsToString(psParam.Ports)
		labels := formatLabels(psParam.Labels)

		switch psParam.Status {
		case libpod.ContainerStateStopped.String():
			exitedSince := units.HumanDuration(time.Since(psParam.ExitedAt))
			status = fmt.Sprintf("Exited (%d) %s ago", psParam.ExitCode, exitedSince)
		case libpod.ContainerStateRunning.String():
			status = "Up " + units.HumanDuration(time.Since(psParam.StartedAt)) + " ago"
		case libpod.ContainerStatePaused.String():
			status = "Paused"
		case libpod.ContainerStateCreated.String(), libpod.ContainerStateConfigured.String():
			status = "Created"
		default:
			status = "Error"
		}

		if !opts.NoTrunc {
			ctrID = shortID(psParam.ID)
			pod = shortID(psParam.Pod)
		}
		params := psTemplateParams{
			ID:            ctrID,
			Image:         imageName,
			Command:       command,
			CreatedAtTime: psParam.CreatedAt,
			Created:       units.HumanDuration(time.Since(psParam.CreatedAt)) + " ago",
			Status:        status,
			Ports:         ports,
			Size:          size,
			Names:         psParam.Names,
			Labels:        labels,
			Mounts:        getMounts(psParam.Mounts, opts.NoTrunc),
			PID:           psParam.PID,
			Pod:           pod,
		}

		if opts.Namespace {
			params.Cgroup = ns.Cgroup
			params.IPC = ns.IPC
			params.MNT = ns.MNT
			params.NET = ns.NET
			params.PIDNS = ns.PIDNS
			params.User = ns.User
			params.UTS = ns.UTS
		}
		psOutput = append(psOutput, params)
	}

	return psOutput, nil
}

// getAndSortJSONOutput returns the container info in its raw, sorted form
func getAndSortJSONParams(containers []*libpod.Container, opts batchcontainer.PsOptions) ([]psJSONParams, error) {
	var (
		psOutput psSorted
		ns       *batchcontainer.Namespace
	)
	for _, ctr := range containers {
		batchInfo, err := batchcontainer.BatchContainerOp(ctr, opts)
		if err != nil {
			if errors.Cause(err) == libpod.ErrNoSuchCtr {
				logrus.Warn(err)
				continue
			}
			return nil, err
		}

		if opts.Namespace {
			ns = batchcontainer.GetNamespaces(batchInfo.Pid)
		}
		params := psJSONParams{
			ID:               ctr.ID(),
			Image:            batchInfo.ConConfig.RootfsImageName,
			ImageID:          batchInfo.ConConfig.RootfsImageID,
			Command:          batchInfo.ConConfig.Spec.Process.Args,
			ExitCode:         batchInfo.ExitCode,
			Exited:           batchInfo.Exited,
			CreatedAt:        batchInfo.ConConfig.CreatedTime,
			StartedAt:        batchInfo.StartedTime,
			ExitedAt:         batchInfo.ExitedTime,
			Status:           batchInfo.ConState.String(),
			PID:              batchInfo.Pid,
			Ports:            batchInfo.ConConfig.PortMappings,
			Size:             batchInfo.Size,
			Names:            batchInfo.ConConfig.Name,
			Labels:           batchInfo.ConConfig.Labels,
			Mounts:           batchInfo.ConConfig.UserVolumes,
			ContainerRunning: batchInfo.ConState == libpod.ContainerStateRunning,
			Namespaces:       ns,
			Pod:              ctr.PodID(),
		}

		psOutput = append(psOutput, params)
	}
	return sortPsOutput(opts.Sort, psOutput)
}

func generatePsOutput(containers []*libpod.Container, opts batchcontainer.PsOptions) error {
	if len(containers) == 0 && opts.Format != formats.JSONString {
		return nil
	}
	psOutput, err := getAndSortJSONParams(containers, opts)
	if err != nil {
		return err
	}
	var out formats.Writer

	switch opts.Format {
	case formats.JSONString:
		if err != nil {
			return errors.Wrapf(err, "unable to create JSON for output")
		}
		out = formats.JSONStructArray{Output: psToGeneric([]psTemplateParams{}, psOutput)}
	default:
		psOutput, err := getTemplateOutput(psOutput, opts)
		if err != nil {
			return errors.Wrapf(err, "unable to create output")
		}
		out = formats.StdoutTemplateArray{Output: psToGeneric(psOutput, []psJSONParams{}), Template: opts.Format, Fields: psOutput[0].headerMap()}
	}

	return formats.Writer(out).Out()
}

// getLabels converts the labels to a string of the form "key=value, key2=value2"
func formatLabels(labels map[string]string) string {
	var arr []string
	if len(labels) > 0 {
		for key, val := range labels {
			temp := key + "=" + val
			arr = append(arr, temp)
		}
		return strings.Join(arr, ",")
	}
	return ""
}

// getMounts converts the volumes mounted to a string of the form "mount1, mount2"
// it truncates it if noTrunc is false
func getMounts(mounts []string, noTrunc bool) string {
	return strings.Join(getMountsArray(mounts, noTrunc), ",")
}

func getMountsArray(mounts []string, noTrunc bool) []string {
	var arr []string
	if len(mounts) == 0 {
		return mounts
	}
	for _, mount := range mounts {
		splitArr := strings.Split(mount, ":")
		if len(splitArr[0]) > mountTruncLength && !noTrunc {
			arr = append(arr, splitArr[0][:mountTruncLength]+"...")
			continue
		}
		arr = append(arr, splitArr[0])
	}
	return arr
}

// portsToString converts the ports used to a string of the from "port1, port2"
func portsToString(ports []ocicni.PortMapping) string {
	var portDisplay []string
	if len(ports) == 0 {
		return ""
	}
	for _, v := range ports {
		hostIP := v.HostIP
		if hostIP == "" {
			hostIP = "0.0.0.0"
		}
		portDisplay = append(portDisplay, fmt.Sprintf("%s:%d->%d/%s", hostIP, v.HostPort, v.ContainerPort, v.Protocol))
	}
	return strings.Join(portDisplay, ", ")
}