101 lines
2.6 KiB
Go
101 lines
2.6 KiB
Go
package server
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/containers/storage"
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pkgstorage "github.com/kubernetes-incubator/cri-o/pkg/storage"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"golang.org/x/net/context"
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pb "k8s.io/kubernetes/pkg/kubelet/apis/cri/runtime/v1alpha2"
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)
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// ImageStatus returns the status of the image.
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func (s *Server) ImageStatus(ctx context.Context, req *pb.ImageStatusRequest) (resp *pb.ImageStatusResponse, err error) {
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const operation = "image_status"
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defer func() {
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recordOperation(operation, time.Now())
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recordError(operation, err)
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}()
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logrus.Debugf("ImageStatusRequest: %+v", req)
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image := ""
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img := req.GetImage()
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if img != nil {
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image = img.Image
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}
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if image == "" {
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return nil, fmt.Errorf("no image specified")
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}
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images, err := s.StorageImageServer().ResolveNames(image)
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if err != nil {
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if err == pkgstorage.ErrCannotParseImageID {
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images = append(images, image)
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} else {
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return nil, err
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}
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}
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var (
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notfound bool
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lastErr error
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)
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for _, image := range images {
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status, err := s.StorageImageServer().ImageStatus(s.ImageContext(), image)
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if err != nil {
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if errors.Cause(err) == storage.ErrImageUnknown {
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logrus.Warnf("imageStatus: can't find %s", image)
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notfound = true
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continue
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}
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logrus.Warnf("imageStatus: error getting status from %s: %v", image, err)
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lastErr = err
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continue
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}
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resp = &pb.ImageStatusResponse{
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Image: &pb.Image{
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Id: status.ID,
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RepoTags: status.RepoTags,
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RepoDigests: status.RepoDigests,
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Size_: *status.Size,
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},
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}
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uid, username := getUserFromImage(status.User)
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if uid != nil {
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resp.Image.Uid = &pb.Int64Value{Value: *uid}
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}
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resp.Image.Username = username
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break
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}
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if lastErr != nil && resp == nil {
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return nil, lastErr
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}
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if notfound && resp == nil {
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return &pb.ImageStatusResponse{}, nil
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}
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logrus.Debugf("ImageStatusResponse: %+v", resp)
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return resp, nil
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}
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// getUserFromImage gets uid or user name of the image user.
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// If user is numeric, it will be treated as uid; or else, it is treated as user name.
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func getUserFromImage(user string) (*int64, string) {
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// return both empty if user is not specified in the image.
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if user == "" {
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return nil, ""
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}
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// split instances where the id may contain user:group
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user = strings.Split(user, ":")[0]
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// user could be either uid or user name. Try to interpret as numeric uid.
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uid, err := strconv.ParseInt(user, 10, 64)
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if err != nil {
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// If user is non numeric, assume it's user name.
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return nil, user
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}
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// If user is a numeric uid.
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return &uid, ""
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}
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