summaryrefslogtreecommitdiff
path: root/pkg/adapter/runtime_remote.go
blob: 97e28e9015a007357ecd036290681af8a6bc6292 (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
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
// +build remoteclient

package adapter

import (
	"bufio"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"io/ioutil"
	"os"
	"strings"
	"text/template"
	"time"

	v1 "k8s.io/api/core/v1"

	"github.com/containers/buildah/imagebuildah"
	"github.com/containers/image/docker/reference"
	"github.com/containers/image/types"
	"github.com/containers/libpod/cmd/podman/cliconfig"
	"github.com/containers/libpod/cmd/podman/remoteclientconfig"
	"github.com/containers/libpod/cmd/podman/varlink"
	"github.com/containers/libpod/libpod"
	"github.com/containers/libpod/libpod/define"
	"github.com/containers/libpod/libpod/events"
	"github.com/containers/libpod/libpod/image"
	"github.com/containers/libpod/utils"
	"github.com/containers/storage/pkg/archive"
	"github.com/opencontainers/go-digest"
	"github.com/pkg/errors"
	"github.com/sirupsen/logrus"
	"github.com/varlink/go/varlink"
)

// ImageRuntime is wrapper for image runtime
type RemoteImageRuntime struct{}

// RemoteRuntime describes a wrapper runtime struct
type RemoteRuntime struct {
	Conn   *varlink.Connection
	Remote bool
	cmd    cliconfig.MainFlags
	config io.Reader
}

// LocalRuntime describes a typical libpod runtime
type LocalRuntime struct {
	*RemoteRuntime
}

// GetRuntime returns a LocalRuntime struct with the actual runtime embedded in it
func GetRuntime(ctx context.Context, c *cliconfig.PodmanCommand) (*LocalRuntime, error) {
	var (
		customConfig bool
		err          error
		f            *os.File
	)
	runtime := RemoteRuntime{
		Remote: true,
		cmd:    c.GlobalFlags,
	}
	configPath := remoteclientconfig.GetConfigFilePath()
	if len(c.GlobalFlags.RemoteConfigFilePath) > 0 {
		configPath = c.GlobalFlags.RemoteConfigFilePath
		customConfig = true
	}

	f, err = os.Open(configPath)
	if err != nil {
		// If user does not explicitly provide a configuration file path and we cannot
		// find a default, no error should occur.
		if os.IsNotExist(err) && !customConfig {
			logrus.Debugf("unable to load configuration file at %s", configPath)
			runtime.config = nil
		} else {
			return nil, errors.Wrapf(err, "unable to load configuration file at %s", configPath)
		}
	} else {
		// create the io reader for the remote client
		runtime.config = bufio.NewReader(f)
	}
	conn, err := runtime.Connect()
	if err != nil {
		return nil, err
	}
	runtime.Conn = conn
	return &LocalRuntime{
		&runtime,
	}, nil
}

// Shutdown is a bogus wrapper for compat with the libpod runtime
func (r RemoteRuntime) Shutdown(force bool) error {
	return nil
}

// ContainerImage
type ContainerImage struct {
	remoteImage
}

type remoteImage struct {
	ID          string
	Labels      map[string]string
	RepoTags    []string
	RepoDigests []string
	Parent      string
	Size        int64
	Created     time.Time
	InputName   string
	Names       []string
	Digest      digest.Digest
	isParent    bool
	Runtime     *LocalRuntime
	TopLayer    string
}

// Container ...
type Container struct {
	remoteContainer
}

// remoteContainer ....
type remoteContainer struct {
	Runtime *LocalRuntime
	config  *libpod.ContainerConfig
	state   *libpod.ContainerState
}

// Pod ...
type Pod struct {
	remotepod
}

type remotepod struct {
	config     *libpod.PodConfig
	state      *libpod.PodInspectState
	containers []libpod.PodContainerInfo
	Runtime    *LocalRuntime
}

type VolumeFilter func(*Volume) bool

// Volume is embed for libpod volumes
type Volume struct {
	remoteVolume
}

type remoteVolume struct {
	Runtime *LocalRuntime
	config  *libpod.VolumeConfig
}

// GetImages returns a slice of containerimages over a varlink connection
func (r *LocalRuntime) GetImages() ([]*ContainerImage, error) {
	var newImages []*ContainerImage
	images, err := iopodman.ListImages().Call(r.Conn)
	if err != nil {
		return nil, err
	}
	for _, i := range images {
		name := i.Id
		if len(i.RepoTags) > 1 {
			name = i.RepoTags[0]
		}
		newImage, err := imageInListToContainerImage(i, name, r)
		if err != nil {
			return nil, err
		}
		newImages = append(newImages, newImage)
	}
	return newImages, nil
}

func imageInListToContainerImage(i iopodman.Image, name string, runtime *LocalRuntime) (*ContainerImage, error) {
	created, err := time.ParseInLocation(time.RFC3339, i.Created, time.UTC)
	if err != nil {
		return nil, err
	}
	ri := remoteImage{
		InputName:   name,
		ID:          i.Id,
		Digest:      digest.Digest(i.Digest),
		Labels:      i.Labels,
		RepoTags:    i.RepoTags,
		RepoDigests: i.RepoTags,
		Parent:      i.ParentId,
		Size:        i.Size,
		Created:     created,
		Names:       i.RepoTags,
		isParent:    i.IsParent,
		Runtime:     runtime,
		TopLayer:    i.TopLayer,
	}
	return &ContainerImage{ri}, nil
}

// NewImageFromLocal returns a container image representation of a image over varlink
func (r *LocalRuntime) NewImageFromLocal(name string) (*ContainerImage, error) {
	img, err := iopodman.GetImage().Call(r.Conn, name)
	if err != nil {
		return nil, err
	}
	return imageInListToContainerImage(img, name, r)

}

// LoadFromArchiveReference creates an image from a local archive
func (r *LocalRuntime) LoadFromArchiveReference(ctx context.Context, srcRef types.ImageReference, signaturePolicyPath string, writer io.Writer) ([]*ContainerImage, error) {
	var iid string
	reply, err := iopodman.PullImage().Send(r.Conn, varlink.More, srcRef.DockerReference().String())
	if err != nil {
		return nil, err
	}

	for {
		responses, flags, err := reply()
		if err != nil {
			return nil, err
		}
		for _, line := range responses.Logs {
			fmt.Print(line)
		}
		iid = responses.Id
		if flags&varlink.Continues == 0 {
			break
		}
	}

	newImage, err := r.NewImageFromLocal(iid)
	if err != nil {
		return nil, err
	}
	return []*ContainerImage{newImage}, nil
}

// New calls into local storage to look for an image in local storage or to pull it
func (r *LocalRuntime) New(ctx context.Context, name, signaturePolicyPath, authfile string, writer io.Writer, dockeroptions *image.DockerRegistryOptions, signingoptions image.SigningOptions, forcePull bool, label *string) (*ContainerImage, error) {
	var iid string
	if label != nil {
		return nil, errors.New("the remote client function does not support checking a remote image for a label")
	}
	reply, err := iopodman.PullImage().Send(r.Conn, varlink.More, name)
	if err != nil {
		return nil, err
	}
	for {
		responses, flags, err := reply()
		if err != nil {
			return nil, err
		}
		for _, line := range responses.Logs {
			fmt.Print(line)
		}
		iid = responses.Id
		if flags&varlink.Continues == 0 {
			break
		}
	}
	newImage, err := r.NewImageFromLocal(iid)
	if err != nil {
		return nil, err
	}
	return newImage, nil
}

// IsParent goes through the layers in the store and checks if i.TopLayer is
// the parent of any other layer in store. Double check that image with that
// layer exists as well.
func (ci *ContainerImage) IsParent(context.Context) (bool, error) {
	return ci.remoteImage.isParent, nil
}

// ID returns the image ID as a string
func (ci *ContainerImage) ID() string {
	return ci.remoteImage.ID
}

// Names returns a string array of names associated with the image
func (ci *ContainerImage) Names() []string {
	return ci.remoteImage.Names
}

// Created returns the time the image was created
func (ci *ContainerImage) Created() time.Time {
	return ci.remoteImage.Created
}

// Size returns the size of the image
func (ci *ContainerImage) Size(ctx context.Context) (*uint64, error) {
	usize := uint64(ci.remoteImage.Size)
	return &usize, nil
}

// Digest returns the image's digest
func (ci *ContainerImage) Digest() digest.Digest {
	return ci.remoteImage.Digest
}

// Labels returns a map of the image's labels
func (ci *ContainerImage) Labels(ctx context.Context) (map[string]string, error) {
	return ci.remoteImage.Labels, nil
}

// Dangling returns a bool if the image is "dangling"
func (ci *ContainerImage) Dangling() bool {
	return len(ci.Names()) == 0
}

// TopLayer returns an images top layer as a string
func (ci *ContainerImage) TopLayer() string {
	return ci.remoteImage.TopLayer
}

// TagImage ...
func (ci *ContainerImage) TagImage(tag string) error {
	_, err := iopodman.TagImage().Call(ci.Runtime.Conn, ci.ID(), tag)
	return err
}

// RemoveImage calls varlink to remove an image
func (r *LocalRuntime) RemoveImage(ctx context.Context, img *ContainerImage, force bool) (string, error) {
	return iopodman.RemoveImage().Call(r.Conn, img.InputName, force)
}

// History returns the history of an image and its layers
func (ci *ContainerImage) History(ctx context.Context) ([]*image.History, error) {
	var imageHistories []*image.History

	reply, err := iopodman.HistoryImage().Call(ci.Runtime.Conn, ci.InputName)
	if err != nil {
		return nil, err
	}
	for _, h := range reply {
		created, err := time.ParseInLocation(time.RFC3339, h.Created, time.UTC)
		if err != nil {
			return nil, err
		}
		ih := image.History{
			ID:        h.Id,
			Created:   &created,
			CreatedBy: h.CreatedBy,
			Size:      h.Size,
			Comment:   h.Comment,
		}
		imageHistories = append(imageHistories, &ih)
	}
	return imageHistories, nil
}

// PruneImages is the wrapper call for a remote-client to prune images
func (r *LocalRuntime) PruneImages(ctx context.Context, all bool) ([]string, error) {
	return iopodman.ImagesPrune().Call(r.Conn, all)
}

// Export is a wrapper to container export to a tarfile
func (r *LocalRuntime) Export(name string, path string) error {
	tempPath, err := iopodman.ExportContainer().Call(r.Conn, name, "")
	if err != nil {
		return err
	}
	return r.GetFileFromRemoteHost(tempPath, path, true)
}

func (r *LocalRuntime) GetFileFromRemoteHost(remoteFilePath, outputPath string, delete bool) error {
	outputFile, err := os.Create(outputPath)
	if err != nil {
		return err
	}
	defer outputFile.Close()

	writer := bufio.NewWriter(outputFile)
	defer writer.Flush()

	reply, err := iopodman.ReceiveFile().Send(r.Conn, varlink.Upgrade, remoteFilePath, delete)
	if err != nil {
		return err
	}

	length, _, err := reply()
	if err != nil {
		return errors.Wrap(err, "unable to get file length for transfer")
	}

	reader := r.Conn.Reader
	if _, err := io.CopyN(writer, reader, length); err != nil {
		return errors.Wrap(err, "file transer failed")
	}
	return nil
}

// Import implements the remote calls required to import a container image to the store
func (r *LocalRuntime) Import(ctx context.Context, source, reference string, changes []string, history string, quiet bool) (string, error) {
	// First we send the file to the host
	tempFile, err := r.SendFileOverVarlink(source)
	if err != nil {
		return "", err
	}
	return iopodman.ImportImage().Call(r.Conn, strings.TrimRight(tempFile, ":"), reference, history, changes, true)
}

func (r *LocalRuntime) Build(ctx context.Context, c *cliconfig.BuildValues, options imagebuildah.BuildOptions, dockerfiles []string) error {
	buildOptions := iopodman.BuildOptions{
		AddHosts:     options.CommonBuildOpts.AddHost,
		CgroupParent: options.CommonBuildOpts.CgroupParent,
		CpuPeriod:    int64(options.CommonBuildOpts.CPUPeriod),
		CpuQuota:     options.CommonBuildOpts.CPUQuota,
		CpuShares:    int64(options.CommonBuildOpts.CPUShares),
		CpusetCpus:   options.CommonBuildOpts.CPUSetMems,
		CpusetMems:   options.CommonBuildOpts.CPUSetMems,
		Memory:       options.CommonBuildOpts.Memory,
		MemorySwap:   options.CommonBuildOpts.MemorySwap,
		ShmSize:      options.CommonBuildOpts.ShmSize,
		Ulimit:       options.CommonBuildOpts.Ulimit,
		Volume:       options.CommonBuildOpts.Volumes,
	}

	buildinfo := iopodman.BuildInfo{
		AdditionalTags:        options.AdditionalTags,
		Annotations:           options.Annotations,
		BuildArgs:             options.Args,
		BuildOptions:          buildOptions,
		CniConfigDir:          options.CNIConfigDir,
		CniPluginDir:          options.CNIPluginPath,
		Compression:           string(options.Compression),
		DefaultsMountFilePath: options.DefaultMountsFilePath,
		Dockerfiles:           dockerfiles,
		// Err: string(options.Err),
		ForceRmIntermediateCtrs: options.ForceRmIntermediateCtrs,
		Iidfile:                 options.IIDFile,
		Label:                   options.Labels,
		Layers:                  options.Layers,
		Nocache:                 options.NoCache,
		// Out:
		Output:                 options.Output,
		OutputFormat:           options.OutputFormat,
		PullPolicy:             options.PullPolicy.String(),
		Quiet:                  options.Quiet,
		RemoteIntermediateCtrs: options.RemoveIntermediateCtrs,
		// ReportWriter:
		RuntimeArgs: options.RuntimeArgs,
		Squash:      options.Squash,
	}
	// tar the file
	outputFile, err := ioutil.TempFile("", "varlink_tar_send")
	if err != nil {
		return err
	}
	defer outputFile.Close()
	defer os.Remove(outputFile.Name())

	// Create the tarball of the context dir to a tempfile
	if err := utils.TarToFilesystem(options.ContextDirectory, outputFile); err != nil {
		return err
	}
	// Send the context dir tarball over varlink.
	tempFile, err := r.SendFileOverVarlink(outputFile.Name())
	if err != nil {
		return err
	}
	buildinfo.ContextDir = tempFile

	reply, err := iopodman.BuildImage().Send(r.Conn, varlink.More, buildinfo)
	if err != nil {
		return err
	}

	for {
		responses, flags, err := reply()
		if err != nil {
			return err
		}
		for _, line := range responses.Logs {
			fmt.Print(line)
		}
		if flags&varlink.Continues == 0 {
			break
		}
	}
	return err
}

// SendFileOverVarlink sends a file over varlink in an upgraded connection
func (r *LocalRuntime) SendFileOverVarlink(source string) (string, error) {
	fs, err := os.Open(source)
	if err != nil {
		return "", err
	}

	fileInfo, err := fs.Stat()
	if err != nil {
		return "", err
	}
	logrus.Debugf("sending %s over varlink connection", source)
	reply, err := iopodman.SendFile().Send(r.Conn, varlink.Upgrade, "", int64(fileInfo.Size()))
	if err != nil {
		return "", err
	}
	_, _, err = reply()
	if err != nil {
		return "", err
	}

	reader := bufio.NewReader(fs)
	_, err = reader.WriteTo(r.Conn.Writer)
	if err != nil {
		return "", err
	}
	logrus.Debugf("file transfer complete for %s", source)
	r.Conn.Writer.Flush()

	// All was sent, wait for the ACK from the server
	tempFile, err := r.Conn.Reader.ReadString(':')
	if err != nil {
		return "", err
	}

	// r.Conn is kaput at this point due to the upgrade
	if err := r.RemoteRuntime.RefreshConnection(); err != nil {
		return "", err

	}

	return strings.Replace(tempFile, ":", "", -1), nil
}

// GetAllVolumes retrieves all the volumes
func (r *LocalRuntime) GetAllVolumes() ([]*libpod.Volume, error) {
	return nil, define.ErrNotImplemented
}

// RemoveVolume removes a volumes
func (r *LocalRuntime) RemoveVolume(ctx context.Context, v *libpod.Volume, force, prune bool) error {
	return define.ErrNotImplemented
}

// GetContainers retrieves all containers from the state
// Filters can be provided which will determine what containers are included in
// the output. Multiple filters are handled by ANDing their output, so only
// containers matching all filters are returned
func (r *LocalRuntime) GetContainers(filters ...libpod.ContainerFilter) ([]*libpod.Container, error) {
	return nil, define.ErrNotImplemented
}

// RemoveContainer removes the given container
// If force is specified, the container will be stopped first
// Otherwise, RemoveContainer will return an error if the container is running
func (r *LocalRuntime) RemoveContainer(ctx context.Context, c *libpod.Container, force, volumes bool) error {
	return define.ErrNotImplemented
}

// CreateVolume creates a volume over a varlink connection for the remote client
func (r *LocalRuntime) CreateVolume(ctx context.Context, c *cliconfig.VolumeCreateValues, labels, opts map[string]string) (string, error) {
	cvOpts := iopodman.VolumeCreateOpts{
		Options: opts,
		Labels:  labels,
	}
	if len(c.InputArgs) > 0 {
		cvOpts.VolumeName = c.InputArgs[0]
	}

	if c.Flag("driver").Changed {
		cvOpts.Driver = c.Driver
	}

	return iopodman.VolumeCreate().Call(r.Conn, cvOpts)
}

// RemoveVolumes removes volumes over a varlink connection for the remote client
func (r *LocalRuntime) RemoveVolumes(ctx context.Context, c *cliconfig.VolumeRmValues) ([]string, error) {
	rmOpts := iopodman.VolumeRemoveOpts{
		All:     c.All,
		Force:   c.Force,
		Volumes: c.InputArgs,
	}
	return iopodman.VolumeRemove().Call(r.Conn, rmOpts)
}

func (r *LocalRuntime) Push(ctx context.Context, srcName, destination, manifestMIMEType, authfile, signaturePolicyPath string, writer io.Writer, forceCompress bool, signingOptions image.SigningOptions, dockerRegistryOptions *image.DockerRegistryOptions, additionalDockerArchiveTags []reference.NamedTagged) error {

	reply, err := iopodman.PushImage().Send(r.Conn, varlink.More, srcName, destination, forceCompress, manifestMIMEType, signingOptions.RemoveSignatures, signingOptions.SignBy)
	if err != nil {
		return err
	}
	for {
		responses, flags, err := reply()
		if err != nil {
			return err
		}
		for _, line := range responses.Logs {
			fmt.Print(line)
		}
		if flags&varlink.Continues == 0 {
			break
		}
	}

	return err
}

// InspectVolumes returns a slice of volumes based on an arg list or --all
func (r *LocalRuntime) InspectVolumes(ctx context.Context, c *cliconfig.VolumeInspectValues) ([]*Volume, error) {
	reply, err := iopodman.GetVolumes().Call(r.Conn, c.InputArgs, c.All)
	if err != nil {
		return nil, err
	}
	return varlinkVolumeToVolume(r, reply), nil
}

// Volumes returns a slice of adapter.volumes based on information about libpod
// volumes over a varlink connection
func (r *LocalRuntime) Volumes(ctx context.Context) ([]*Volume, error) {
	reply, err := iopodman.GetVolumes().Call(r.Conn, []string{}, true)
	if err != nil {
		return nil, err
	}
	return varlinkVolumeToVolume(r, reply), nil
}

func varlinkVolumeToVolume(r *LocalRuntime, volumes []iopodman.Volume) []*Volume {
	var vols []*Volume
	for _, v := range volumes {
		volumeConfig := libpod.VolumeConfig{
			Name:       v.Name,
			Labels:     v.Labels,
			MountPoint: v.MountPoint,
			Driver:     v.Driver,
			Options:    v.Options,
			Scope:      v.Scope,
		}
		n := remoteVolume{
			Runtime: r,
			config:  &volumeConfig,
		}
		newVol := Volume{
			n,
		}
		vols = append(vols, &newVol)
	}
	return vols
}

// PruneVolumes removes all unused volumes from the remote system
func (r *LocalRuntime) PruneVolumes(ctx context.Context) ([]string, []error) {
	var errs []error
	prunedNames, prunedErrors, err := iopodman.VolumesPrune().Call(r.Conn)
	if err != nil {
		return []string{}, []error{err}
	}
	// We need to transform the string results of the error into actual error types
	for _, e := range prunedErrors {
		errs = append(errs, errors.New(e))
	}
	return prunedNames, errs
}

// SaveImage is a wrapper function for saving an image to the local filesystem
func (r *LocalRuntime) SaveImage(ctx context.Context, c *cliconfig.SaveValues) error {
	source := c.InputArgs[0]
	additionalTags := c.InputArgs[1:]

	options := iopodman.ImageSaveOptions{
		Name:     source,
		Format:   c.Format,
		Output:   c.Output,
		MoreTags: additionalTags,
		Quiet:    c.Quiet,
		Compress: c.Compress,
	}
	reply, err := iopodman.ImageSave().Send(r.Conn, varlink.More, options)
	if err != nil {
		return err
	}

	var fetchfile string
	for {
		responses, flags, err := reply()
		if err != nil {
			return err
		}
		if len(responses.Id) > 0 {
			fetchfile = responses.Id
		}
		for _, line := range responses.Logs {
			fmt.Print(line)
		}
		if flags&varlink.Continues == 0 {
			break
		}

	}
	if err != nil {
		return err
	}

	outputToDir := false
	outfile := c.Output
	var outputFile *os.File
	// If the result is supposed to be a dir, then we need to put the tarfile
	// from the host in a temporary file
	if options.Format != "oci-archive" && options.Format != "docker-archive" {
		outputToDir = true
		outputFile, err = ioutil.TempFile("", "saveimage_tempfile")
		if err != nil {
			return err
		}
		outfile = outputFile.Name()
		defer outputFile.Close()
		defer os.Remove(outputFile.Name())
	}
	// We now need to fetch the tarball result back to the more system
	if err := r.GetFileFromRemoteHost(fetchfile, outfile, true); err != nil {
		return err
	}

	// If the result is a tarball, we're done
	// If it is a dir, we need to untar the temporary file into the dir
	if outputToDir {
		if err := utils.UntarToFileSystem(c.Output, outputFile, &archive.TarOptions{}); err != nil {
			return err
		}
	}
	return nil
}

// LoadImage loads a container image from a remote client's filesystem
func (r *LocalRuntime) LoadImage(ctx context.Context, name string, cli *cliconfig.LoadValues) (string, error) {
	var names string
	remoteTempFile, err := r.SendFileOverVarlink(cli.Input)
	if err != nil {
		return "", nil
	}
	more := varlink.More
	if cli.Quiet {
		more = 0
	}
	reply, err := iopodman.LoadImage().Send(r.Conn, uint64(more), name, remoteTempFile, cli.Quiet, true)
	if err != nil {
		return "", err
	}

	for {
		responses, flags, err := reply()
		if err != nil {
			logrus.Error(err)
			return "", err
		}
		for _, line := range responses.Logs {
			fmt.Print(line)
		}
		names = responses.Id
		if flags&varlink.Continues == 0 {
			break
		}
	}
	return names, nil
}

// IsImageNotFound checks if the error indicates that no image was found.
func IsImageNotFound(err error) bool {
	if errors.Cause(err) == image.ErrNoSuchImage {
		return true
	}
	switch err.(type) {
	case *iopodman.ImageNotFound:
		return true
	}
	return false
}

// HealthCheck executes a container's healthcheck over a varlink connection
func (r *LocalRuntime) HealthCheck(c *cliconfig.HealthCheckValues) (libpod.HealthCheckStatus, error) {
	return -1, define.ErrNotImplemented
}

// Events monitors libpod/podman events over a varlink connection
func (r *LocalRuntime) Events(c *cliconfig.EventValues) error {
	var more uint64
	if c.Stream {
		more = uint64(varlink.More)
	}
	reply, err := iopodman.GetEvents().Send(r.Conn, more, c.Filter, c.Since, c.Until)
	if err != nil {
		return errors.Wrapf(err, "unable to obtain events")
	}

	w := bufio.NewWriter(os.Stdout)
	tmpl, err := template.New("events").Parse(c.Format)
	if err != nil {
		return err
	}

	for {
		returnedEvent, flags, err := reply()
		if err != nil {
			// When the error handling is back into podman, we can flip this to a better way to check
			// for problems. For now, this works.
			return err
		}
		if returnedEvent.Time == "" && returnedEvent.Status == "" && returnedEvent.Type == "" {
			// We got a blank event return, signals end of stream in certain cases
			break
		}
		eTime, err := time.Parse(time.RFC3339Nano, returnedEvent.Time)
		if err != nil {
			return errors.Wrapf(err, "unable to parse time of event %s", returnedEvent.Time)
		}
		eType, err := events.StringToType(returnedEvent.Type)
		if err != nil {
			return err
		}
		eStatus, err := events.StringToStatus(returnedEvent.Status)
		if err != nil {
			return err
		}
		event := events.Event{
			ID:     returnedEvent.Id,
			Image:  returnedEvent.Image,
			Name:   returnedEvent.Name,
			Status: eStatus,
			Time:   eTime,
			Type:   eType,
		}
		if len(c.Format) > 0 {
			if err := tmpl.Execute(w, event); err != nil {
				return err
			}
		} else {
			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
		}
		if flags&varlink.Continues == 0 {
			break
		}
	}
	return nil
}

// Diff ...
func (r *LocalRuntime) Diff(c *cliconfig.DiffValues, to string) ([]archive.Change, error) {
	var changes []archive.Change
	reply, err := iopodman.Diff().Call(r.Conn, to)
	if err != nil {
		return nil, err
	}
	for _, change := range reply {
		changes = append(changes, archive.Change{Path: change.Path, Kind: stringToChangeType(change.ChangeType)})
	}
	return changes, nil
}

func stringToChangeType(change string) archive.ChangeType {
	switch change {
	case "A":
		return archive.ChangeAdd
	case "D":
		return archive.ChangeDelete
	default:
		logrus.Errorf("'%s' is unknown archive type", change)
		fallthrough
	case "C":
		return archive.ChangeModify
	}
}

// GenerateKube creates kubernetes email from containers and pods
func (r *LocalRuntime) GenerateKube(c *cliconfig.GenerateKubeValues) (*v1.Pod, *v1.Service, error) {
	var (
		pod     v1.Pod
		service v1.Service
	)
	reply, err := iopodman.GenerateKube().Call(r.Conn, c.InputArgs[0], c.Service)
	if err != nil {
		return nil, nil, errors.Wrap(err, "unable to create kubernetes YAML")
	}
	if err := json.Unmarshal([]byte(reply.Pod), &pod); err != nil {
		return nil, nil, err
	}
	err = json.Unmarshal([]byte(reply.Service), &service)
	return &pod, &service, err
}

// GetContainersByContext looks up containers based on the cli input of all, latest, or a list
func (r *LocalRuntime) GetContainersByContext(all bool, latest bool, namesOrIDs []string) ([]*Container, error) {
	var containers []*Container
	cids, err := iopodman.GetContainersByContext().Call(r.Conn, all, latest, namesOrIDs)
	if err != nil {
		return nil, err
	}
	for _, cid := range cids {
		ctr, err := r.LookupContainer(cid)
		if err != nil {
			return nil, err
		}
		containers = append(containers, ctr)
	}
	return containers, nil
}

// GetVersion returns version information from service
func (r *LocalRuntime) GetVersion() (libpod.Version, error) {
	version, goVersion, gitCommit, built, osArch, apiVersion, err := iopodman.GetVersion().Call(r.Conn)
	if err != nil {
		return libpod.Version{}, errors.Wrapf(err, "Unable to obtain server version information")
	}

	var buildTime int64
	if built != "" {
		t, err := time.Parse(time.RFC3339, built)
		if err != nil {
			return libpod.Version{}, nil
		}
		buildTime = t.Unix()
	}

	return libpod.Version{
		RemoteAPIVersion: apiVersion,
		Version:          version,
		GoVersion:        goVersion,
		GitCommit:        gitCommit,
		Built:            buildTime,
		OsArch:           osArch,
	}, nil
}