const (
	// Socket is the name of the podresources server socket
	Socket = "kubelet"

	// DefaultQPS is determined by empirically reviewing known consumers of the API.
	// It's at least unlikely that there is a legitimate need to query podresources
	// more than 100 times per second, the other subsystems are not guaranteed to react
	// so fast in the first place.
	DefaultQPS = 100

	// DefaultBurstTokens is determined by empirically reviewing known consumers of the API.
	// See the documentation of DefaultQPS, same caveats apply.
	DefaultBurstTokens = 10
)

type CPUsProvider interface {
	// GetCPUs returns information about the cpus assigned to pods and containers
	GetCPUs(podUID, containerName string) []int64
	// GetAllocatableCPUs returns the allocatable (not allocated) CPUs
	GetAllocatableCPUs() []int64
}

type DevicesProvider interface {
	// UpdateAllocatedDevices frees any Devices that are bound to terminated pods.
	UpdateAllocatedDevices()
	// GetDevices returns information about the devices assigned to pods and containers
	GetDevices(podUID, containerName string) []*podresourcesapi.ContainerDevices
	// GetAllocatableDevices returns information about all the devices known to the manager
	GetAllocatableDevices() []*podresourcesapi.ContainerDevices
}

type DynamicResourcesProvider interface {
	// GetDynamicResources returns information about dynamic resources assigned to pods and containers
	GetDynamicResources(pod *v1.Pod, container *v1.Container) []*podresourcesapi.DynamicResource
}

type MemoryProvider interface {
	// GetMemory returns information about the memory assigned to containers
	GetMemory(podUID, containerName string) []*podresourcesapi.ContainerMemory
	// GetAllocatableMemory returns the allocatable memory from the node
	GetAllocatableMemory() []*podresourcesapi.ContainerMemory
}

type PodResourcesProviders struct {
	Pods             PodsProvider
	Devices          DevicesProvider
	Cpus             CPUsProvider
	Memory           MemoryProvider
	DynamicResources DynamicResourcesProvider
}

type PodsProvider interface {
	GetPods() []*v1.Pod
	GetPodByName(namespace, name string) (*v1.Pod, bool)
}