tracker

type Accepted interface {
	validators.SetCallbackListener

	// SetLastAccepted updates the latest accepted block for [nodeID] to
	// [blockID]. If [nodeID] is not currently a validator, this is a noop.
	SetLastAccepted(nodeID ids.NodeID, blockID ids.ID)
	// LastAccepted returns the latest known accepted block of [nodeID]. If
	// [nodeID]'s last accepted block was never unknown, false will be returned.
	LastAccepted(nodeID ids.NodeID) (ids.ID, bool)
}

type Peers interface {
	validators.SetCallbackListener
	validators.Connector

	// ConnectedWeight returns the currently connected stake weight
	ConnectedWeight() uint64
	// ConnectedPercent returns the currently connected stake percentage [0, 1]
	ConnectedPercent() float64
	// SampleValidator returns a randomly selected connected validator. If there
	// are no currently connected validators then it will return false.
	SampleValidator() (ids.NodeID, bool)
}

type Startup interface {
	Peers

	ShouldStart() bool
}