"k8s.io/kubernetes/pkg/scheduler/framework/plugins/feature"
	"k8s.io/kubernetes/pkg/scheduler/framework/plugins/helper"
	"k8s.io/kubernetes/pkg/scheduler/framework/plugins/names"
)

const (
	stateKey framework.StateKey = Name

	maxUtilization = 100
)

// the state is initialized in PreFilter phase. because we save the pointer in
// framework.CycleState, in the later phases we don't need to call Write method

var _ framework.EnqueueExtensions = &VolumeZone{}

const (
	// Name is the name of the plugin used in the plugin registry and configurations.
	Name = names.VolumeZone

	preFilterStateKey framework.StateKey = "PreFilter" + Name

	// ErrReasonConflict is used for NoVolumeZoneConflict predicate error.
	ErrReasonConflict = "node(s) had no available volume zone"
)

// pvTopology holds the value of a pv's topologyLabel

	"k8s.io/kubernetes/pkg/scheduler/util/assumecache"
	"k8s.io/utils/ptr"
)

const (
	// Name is the name of the plugin used in Registry and configurations.
	Name = names.DynamicResources

	stateKey framework.StateKey = Name

	// generatedFromIndex is the lookup name for the index function
	// which indexes by other resource which generated the parameters object.
	generatedFromIndex = "generated-from-index"
)

// activated (i.e., moved to activeQ) in two phases:
// - end of a scheduling cycle if it succeeds (will be cleared from `PodsToActivate` if activated)
// - end of a binding cycle if it succeeds
var PodsToActivateKey StateKey = "kubernetes.io/pods-to-activate"

// PodsToActivate stores pods to be activated.
type PodsToActivate struct {
	sync.Mutex
	// Map is keyed with namespaced pod name, and valued with the pod.