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package libpod
// State is a storage backend for libpod's current state
type State interface {
// Close performs any pre-exit cleanup (e.g. closing database
// connections) that may be required
Close() error
// Accepts full ID of container
Container(id string) (*Container, error)
// Accepts full or partial IDs (as long as they are unique) and names
LookupContainer(idOrName string) (*Container, error)
// Checks if a container with the given ID is present in the state
HasContainer(id string) (bool, error)
// Adds container to state
// If the container belongs to a pod, that pod must already be present
// in the state when the container is added, and the container must be
// present in the pod
AddContainer(ctr *Container) error
// Removes container from state
// The container will only be removed from the state, not from the pod
// which the container belongs to
RemoveContainer(ctr *Container) error
// UpdateContainer updates a container's state from the backing store
UpdateContainer(ctr *Container) error
// SaveContainer saves a container's current state to the backing store
SaveContainer(ctr *Container) error
// Retrieves all containers presently in state
AllContainers() ([]*Container, error)
// Accepts full ID of pod
Pod(id string) (*Pod, error)
// Accepts full or partial IDs (as long as they are unique) and names
LookupPod(idOrName string) (*Pod, error)
// Checks if a pod with the given ID is present in the state
HasPod(id string) (bool, error)
// Adds pod to state
// Only empty pods can be added to the state
AddPod(pod *Pod) error
// Removes pod from state
// Containers within a pod will not be removed from the state, and will
// not be changed to remove them from the now-removed pod
RemovePod(pod *Pod) error
// Retrieves all pods presently in state
AllPods() ([]*Pod, error)
}
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