const (
	// PodConfigNotificationUnknown is the default value for
	// PodConfigNotificationMode when uninitialized.
	PodConfigNotificationUnknown = iota
	// PodConfigNotificationSnapshot delivers the full configuration as a SET whenever
	// any change occurs.
	PodConfigNotificationSnapshot
	// PodConfigNotificationSnapshotAndUpdates delivers an UPDATE and DELETE message whenever pods are
	// changed, and a SET message if there are any additions or removals.
	PodConfigNotificationSnapshotAndUpdates
	// PodConfigNotificationIncremental delivers ADD, UPDATE, DELETE, REMOVE, RECONCILE to the update channel.
	PodConfigNotificationIncremental
)

const (
	DefaultKubeletPodsDirName                = "pods"
	DefaultKubeletVolumesDirName             = "volumes"
	DefaultKubeletVolumeSubpathsDirName      = "volume-subpaths"
	DefaultKubeletVolumeDevicesDirName       = "volumeDevices"
	DefaultKubeletPluginsDirName             = "plugins"
	DefaultKubeletPluginsRegistrationDirName = "plugins_registry"
	DefaultKubeletContainersDirName          = "containers"
	DefaultKubeletPluginContainersDirName    = "plugin-containers"
	DefaultKubeletPodResourcesDirName        = "pod-resources"
	KubeletPluginsDirSELinuxLabel            = "system_u:object_r:container_file_t:s0"
)

type ContainerRuntimeOptions struct {

	// ContainerRuntime is the container runtime to use.
	ContainerRuntime string
	// RuntimeCgroups that container runtime is expected to be isolated in.
	RuntimeCgroups string
	// RedirectContainerStreaming enables container streaming redirect.
	// When RedirectContainerStreaming is false, kubelet will proxy container streaming data
	// between apiserver and container runtime. This approach is more secure, but the proxy
	// introduces some overhead.
	// When RedirectContainerStreaming is true, kubelet will return an http redirect to apiserver,
	// and apiserver will access container runtime directly. This approach is more performant,
	// but less secure because the connection between apiserver and container runtime is not
	// authenticated.
	RedirectContainerStreaming bool

	// DockershimRootDirectory is the path to the dockershim root directory. Defaults to
	// /var/lib/dockershim if unset. Exposed for integration testing (e.g. in OpenShift).
	DockershimRootDirectory string
	// Enable dockershim only mode.
	ExperimentalDockershim bool
	// PodSandboxImage is the image whose network/ipc namespaces
	// containers in each pod will use.
	PodSandboxImage string
	// DockerEndpoint is the path to the docker endpoint to communicate with.
	DockerEndpoint string
	// If no pulling progress is made before the deadline imagePullProgressDeadline,
	// the image pulling will be cancelled. Defaults to 1m0s.
	// +optional
	ImagePullProgressDeadline metav1.Duration

	// networkPluginName is the name of the network plugin to be invoked for
	// various events in kubelet/pod lifecycle
	NetworkPluginName string
	// NetworkPluginMTU is the MTU to be passed to the network plugin,
	// and overrides the default MTU for cases where it cannot be automatically
	// computed (such as IPSEC).
	NetworkPluginMTU int32
	// CNIConfDir is the full path of the directory in which to search for
	// CNI config files
	CNIConfDir string
	// CNIBinDir is the full path of the directory in which to search for
	// CNI plugin binaries
	CNIBinDir string
	// CNICacheDir is the full path of the directory in which CNI should store
	// cache files
	CNICacheDir string
}

type PodConfig struct {
	// contains filtered or unexported fields
}

type PodConfigNotificationMode int

type SourcesReady interface {
	// AddSource adds the specified source to the set of sources managed.
	AddSource(source string)
	// AllReady returns true if the currently configured sources have all been seen.
	AllReady() bool
}

type SourcesReadyFn func(sourcesSeen sets.String) bool