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Move image pull throttling logic to kubelet/images

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This allows runtimes in different packages (dockertools, rkt, kuberuntime) to
share the same logic. Before this change, only dockertools support this
feature. Now all three packages support image pull throttling.
This commit is contained in:
Yu-Ju Hong
2016-09-21 14:26:17 -07:00
parent 313ef63993
commit ee5b6a2550
12 changed files with 111 additions and 65 deletions
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27
pkg/kubelet/container/runtime.go
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@@ -93,17 +93,6 @@ type Runtime interface {
// GetPodStatus retrieves the status of the pod, including the
// information of all containers in the pod that are visble in Runtime.
GetPodStatus(uid types.UID, name, namespace string) (*PodStatus, error)
// PullImage pulls an image from the network to local storage using the supplied
// secrets if necessary.
PullImage(image ImageSpec, pullSecrets []api.Secret) error
// IsImagePresent checks whether the container image is already in the local storage.
IsImagePresent(image ImageSpec) (bool, error)
// Gets all images currently on the machine.
ListImages() ([]Image, error)
// Removes the specified image.
RemoveImage(image ImageSpec) error
// Returns Image statistics.
ImageStats() (*ImageStats, error)
// Returns the filesystem path of the pod's network namespace; if the
// runtime does not handle namespace creation itself, or cannot return
// the network namespace path, it should return an error.
@@ -127,6 +116,22 @@ type Runtime interface {
ContainerCommandRunner
// ContainerAttach encapsulates the attaching to containers for testability
ContainerAttacher
// ImageService provides methods to image-related methods.
ImageService
}
type ImageService interface {
// PullImage pulls an image from the network to local storage using the supplied
// secrets if necessary.
PullImage(image ImageSpec, pullSecrets []api.Secret) error
// IsImagePresent checks whether the container image is already in the local storage.
IsImagePresent(image ImageSpec) (bool, error)
// Gets all images currently on the machine.
ListImages() ([]Image, error)
// Removes the specified image.
RemoveImage(image ImageSpec) error
// Returns Image statistics.
ImageStats() (*ImageStats, error)
}
type ContainerAttacher interface {