api

type Scheduler interface {
	// Name is the scheduler algorithm name.
	Name() string

	// QueueTx queues a transaction for scheduling.
	QueueTx(tx *transaction.CheckedTransaction) error

	// RemoveTxBatch removes a transaction batch.
	RemoveTxBatch(tx []hash.Hash) error

	// GetBatch returns a batch of scheduled transactions (if any is available).
	GetBatch(force bool) []*transaction.CheckedTransaction

	// GetPrioritizedBatch returns a batch of transactions ordered by priority but without taking
	// any weight limits into account.
	//
	// Offset specifies the transaction hash that should serve as an offset when returning
	// transactions from the pool. Transactions will be skipped until the given hash is encountered
	// and only following transactions will be returned.
	GetPrioritizedBatch(offset *hash.Hash, limit uint32) []*transaction.CheckedTransaction

	// UnscheduledSize returns number of unscheduled items.
	UnscheduledSize() uint64

	// IsQueued returns if a transaction is queued.
	IsQueued(hash.Hash) bool

	// UpdateParameters updates the scheduling parameters.
	UpdateParameters(algo string, weightLimits map[transaction.Weight]uint64) error

	// Clear clears the transaction queue.
	Clear()
}