Enable more podman-remote pod commands

enable pod start, stop, and kill subcommands for the remote-client.

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

1 files changed, 335 insertions, 0 deletions

diff --git a/pkg/adapter/runtime.go b/pkg/adapter/runtime.go
new file mode 100644
index 000000000..4f5b98dbb
--- /dev/null
+++ b/pkg/adapter/runtime.go
@@ -0,0 +1,335 @@
+// +build !remoteclient
+
+package adapter
+
+import (
+	"context"
+	"io"
+	"io/ioutil"
+	"os"
+	"strconv"
+
+	"github.com/containers/buildah"
+	"github.com/containers/buildah/imagebuildah"
+	"github.com/containers/buildah/pkg/parse"
+	"github.com/containers/image/docker/reference"
+	"github.com/containers/image/types"
+	"github.com/containers/libpod/cmd/podman/cliconfig"
+	"github.com/containers/libpod/cmd/podman/libpodruntime"
+	"github.com/containers/libpod/libpod"
+	"github.com/containers/libpod/libpod/image"
+	"github.com/containers/libpod/pkg/rootless"
+	"github.com/pkg/errors"
+)
+
+// LocalRuntime describes a typical libpod runtime
+type LocalRuntime struct {
+	*libpod.Runtime
+	Remote bool
+}
+
+// ContainerImage ...
+type ContainerImage struct {
+	*image.Image
+}
+
+// Container ...
+type Container struct {
+	*libpod.Container
+}
+
+// Volume ...
+type Volume struct {
+	*libpod.Volume
+}
+
+// VolumeFilter is for filtering volumes on the client
+type VolumeFilter func(*Volume) bool
+
+// GetRuntime returns a LocalRuntime struct with the actual runtime embedded in it
+func GetRuntime(c *cliconfig.PodmanCommand) (*LocalRuntime, error) {
+	runtime, err := libpodruntime.GetRuntime(c)
+	if err != nil {
+		return nil, err
+	}
+	return &LocalRuntime{
+		Runtime: runtime,
+	}, nil
+}
+
+// GetImages returns a slice of images in containerimages
+func (r *LocalRuntime) GetImages() ([]*ContainerImage, error) {
+	var containerImages []*ContainerImage
+	images, err := r.Runtime.ImageRuntime().GetImages()
+	if err != nil {
+		return nil, err
+	}
+	for _, i := range images {
+		containerImages = append(containerImages, &ContainerImage{i})
+	}
+	return containerImages, nil
+
+}
+
+// NewImageFromLocal returns a containerimage representation of a image from local storage
+func (r *LocalRuntime) NewImageFromLocal(name string) (*ContainerImage, error) {
+	img, err := r.Runtime.ImageRuntime().NewFromLocal(name)
+	if err != nil {
+		return nil, err
+	}
+	return &ContainerImage{img}, nil
+}
+
+// LoadFromArchiveReference calls into local storage to load an image from an archive
+func (r *LocalRuntime) LoadFromArchiveReference(ctx context.Context, srcRef types.ImageReference, signaturePolicyPath string, writer io.Writer) ([]*ContainerImage, error) {
+	var containerImages []*ContainerImage
+	imgs, err := r.Runtime.ImageRuntime().LoadFromArchiveReference(ctx, srcRef, signaturePolicyPath, writer)
+	if err != nil {
+		return nil, err
+	}
+	for _, i := range imgs {
+		ci := ContainerImage{i}
+		containerImages = append(containerImages, &ci)
+	}
+	return containerImages, 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) {
+	img, err := r.Runtime.ImageRuntime().New(ctx, name, signaturePolicyPath, authfile, writer, dockeroptions, signingoptions, forcePull, label)
+	if err != nil {
+		return nil, err
+	}
+	return &ContainerImage{img}, nil
+}
+
+// RemoveImage calls into local storage and removes an image
+func (r *LocalRuntime) RemoveImage(ctx context.Context, img *ContainerImage, force bool) (string, error) {
+	return r.Runtime.RemoveImage(ctx, img.Image, force)
+}
+
+// LookupContainer ...
+func (r *LocalRuntime) LookupContainer(idOrName string) (*Container, error) {
+	ctr, err := r.Runtime.LookupContainer(idOrName)
+	if err != nil {
+		return nil, err
+	}
+	return &Container{ctr}, nil
+}
+
+// PruneImages is wrapper into PruneImages within the image pkg
+func (r *LocalRuntime) PruneImages(all bool) ([]string, error) {
+	return r.ImageRuntime().PruneImages(all)
+}
+
+// Export is a wrapper to container export to a tarfile
+func (r *LocalRuntime) Export(name string, path string) error {
+	ctr, err := r.Runtime.LookupContainer(name)
+	if err != nil {
+		return errors.Wrapf(err, "error looking up container %q", name)
+	}
+	if os.Geteuid() != 0 {
+		state, err := ctr.State()
+		if err != nil {
+			return errors.Wrapf(err, "cannot read container state %q", ctr.ID())
+		}
+		if state == libpod.ContainerStateRunning || state == libpod.ContainerStatePaused {
+			data, err := ioutil.ReadFile(ctr.Config().ConmonPidFile)
+			if err != nil {
+				return errors.Wrapf(err, "cannot read conmon PID file %q", ctr.Config().ConmonPidFile)
+			}
+			conmonPid, err := strconv.Atoi(string(data))
+			if err != nil {
+				return errors.Wrapf(err, "cannot parse PID %q", data)
+			}
+			became, ret, err := rootless.JoinDirectUserAndMountNS(uint(conmonPid))
+			if err != nil {
+				return err
+			}
+			if became {
+				os.Exit(ret)
+			}
+		} else {
+			became, ret, err := rootless.BecomeRootInUserNS()
+			if err != nil {
+				return err
+			}
+			if became {
+				os.Exit(ret)
+			}
+		}
+	}
+
+	return ctr.Export(path)
+}
+
+// Import is a wrapper to import a container image
+func (r *LocalRuntime) Import(ctx context.Context, source, reference string, changes []string, history string, quiet bool) (string, error) {
+	return r.Runtime.Import(ctx, source, reference, changes, history, quiet)
+}
+
+// CreateVolume is a wrapper to create volumes
+func (r *LocalRuntime) CreateVolume(ctx context.Context, c *cliconfig.VolumeCreateValues, labels, opts map[string]string) (string, error) {
+	var (
+		options []libpod.VolumeCreateOption
+		volName string
+	)
+
+	if len(c.InputArgs) > 0 {
+		volName = c.InputArgs[0]
+		options = append(options, libpod.WithVolumeName(volName))
+	}
+
+	if c.Flag("driver").Changed {
+		options = append(options, libpod.WithVolumeDriver(c.Driver))
+	}
+
+	if len(labels) != 0 {
+		options = append(options, libpod.WithVolumeLabels(labels))
+	}
+
+	if len(options) != 0 {
+		options = append(options, libpod.WithVolumeOptions(opts))
+	}
+	newVolume, err := r.NewVolume(ctx, options...)
+	if err != nil {
+		return "", err
+	}
+	return newVolume.Name(), nil
+}
+
+// RemoveVolumes is a wrapper to remove volumes
+func (r *LocalRuntime) RemoveVolumes(ctx context.Context, c *cliconfig.VolumeRmValues) ([]string, error) {
+	return r.Runtime.RemoveVolumes(ctx, c.InputArgs, c.All, c.Force)
+}
+
+// Push is a wrapper to push an image to a registry
+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 {
+	newImage, err := r.ImageRuntime().NewFromLocal(srcName)
+	if err != nil {
+		return err
+	}
+	return newImage.PushImageToHeuristicDestination(ctx, destination, manifestMIMEType, authfile, signaturePolicyPath, writer, forceCompress, signingOptions, dockerRegistryOptions, nil)
+}
+
+// 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) {
+	var (
+		volumes []*libpod.Volume
+		err     error
+	)
+
+	if c.All {
+		volumes, err = r.GetAllVolumes()
+	} else {
+		for _, v := range c.InputArgs {
+			vol, err := r.GetVolume(v)
+			if err != nil {
+				return nil, err
+			}
+			volumes = append(volumes, vol)
+		}
+	}
+	if err != nil {
+		return nil, err
+	}
+	return libpodVolumeToVolume(volumes), nil
+}
+
+// Volumes returns a slice of localruntime volumes
+func (r *LocalRuntime) Volumes(ctx context.Context) ([]*Volume, error) {
+	vols, err := r.GetAllVolumes()
+	if err != nil {
+		return nil, err
+	}
+	return libpodVolumeToVolume(vols), nil
+}
+
+// libpodVolumeToVolume converts a slice of libpod volumes to a slice
+// of localruntime volumes (same as libpod)
+func libpodVolumeToVolume(volumes []*libpod.Volume) []*Volume {
+	var vols []*Volume
+	for _, v := range volumes {
+		newVol := Volume{
+			v,
+		}
+		vols = append(vols, &newVol)
+	}
+	return vols
+}
+
+// Build is the wrapper to build images
+func (r *LocalRuntime) Build(ctx context.Context, c *cliconfig.BuildValues, options imagebuildah.BuildOptions, dockerfiles []string) error {
+	namespaceOptions, networkPolicy, err := parse.NamespaceOptions(c.PodmanCommand.Command)
+	if err != nil {
+		return errors.Wrapf(err, "error parsing namespace-related options")
+	}
+	usernsOption, idmappingOptions, err := parse.IDMappingOptions(c.PodmanCommand.Command)
+	if err != nil {
+		return errors.Wrapf(err, "error parsing ID mapping options")
+	}
+	namespaceOptions.AddOrReplace(usernsOption...)
+
+	systemContext, err := parse.SystemContextFromOptions(c.PodmanCommand.Command)
+	if err != nil {
+		return errors.Wrapf(err, "error building system context")
+	}
+
+	authfile := c.Authfile
+	if len(c.Authfile) == 0 {
+		authfile = os.Getenv("REGISTRY_AUTH_FILE")
+	}
+
+	systemContext.AuthFilePath = authfile
+	commonOpts, err := parse.CommonBuildOptions(c.PodmanCommand.Command)
+	if err != nil {
+		return err
+	}
+
+	options.NamespaceOptions = namespaceOptions
+	options.ConfigureNetwork = networkPolicy
+	options.IDMappingOptions = idmappingOptions
+	options.CommonBuildOpts = commonOpts
+	options.SystemContext = systemContext
+
+	if c.Flag("runtime").Changed {
+		options.Runtime = r.GetOCIRuntimePath()
+	}
+	if c.Quiet {
+		options.ReportWriter = ioutil.Discard
+	}
+
+	if rootless.IsRootless() {
+		options.Isolation = buildah.IsolationOCIRootless
+	}
+
+	return r.Runtime.Build(ctx, options, dockerfiles...)
+}
+
+// PruneVolumes is a wrapper function for libpod PruneVolumes
+func (r *LocalRuntime) PruneVolumes(ctx context.Context) ([]string, []error) {
+	return r.Runtime.PruneVolumes(ctx)
+}
+
+// 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:]
+
+	newImage, err := r.Runtime.ImageRuntime().NewFromLocal(source)
+	if err != nil {
+		return err
+	}
+	return newImage.Save(ctx, source, c.Format, c.Output, additionalTags, c.Quiet, c.Compress)
+}
+
+// LoadImage is a wrapper function for libpod PruneVolumes
+func (r *LocalRuntime) LoadImage(ctx context.Context, name string, cli *cliconfig.LoadValues) (string, error) {
+	var (
+		writer io.Writer
+	)
+	if !cli.Quiet {
+		writer = os.Stderr
+	}
+	return r.Runtime.LoadImage(ctx, name, cli.Input, writer, cli.SignaturePolicy)
+}