chainstore

Documentation

Index

• type Store
  • func New(ds datastore.TxnDatastore, fr TipsetOrderer) (*Store, error)
  • func (s *Store) GetLastCheckpoint(v interface{}) (*types.TipSetKey, error)
  • func (s *Store) LoadAndPrune(ctx context.Context, currHead types.TipSetKey, value interface{}) (*types.TipSetKey, error)
  • func (s *Store) Save(ctx context.Context, ts types.TipSetKey, state interface{}) error
• type TipsetOrderer

Types

type Store

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

Store allows to save snapshoted state.

func New

func New(ds datastore.TxnDatastore, fr TipsetOrderer) (*Store, error)

New returns a new Store.

func (*Store) GetLastCheckpoint

func (s *Store) GetLastCheckpoint(v interface{}) (*types.TipSetKey, error)

GetLastCheckpoint returns the most recent saved state, and its TipSetKey. In case none exist, it will return a nil TipSetKey.

func (*Store) LoadAndPrune

func (s *Store) LoadAndPrune(ctx context.Context, currHead types.TipSetKey, value interface{}) (*types.TipSetKey, error)

LoadAndPrune loads into value the last saved state before the currHead tipset branch, and returns the TipSetKey of that state. If currHead invalidates saved checkpoints those will be deleted (auto-pruning).

func (*Store) Save

func (s *Store) Save(ctx context.Context, ts types.TipSetKey, state interface{}) error

Save saves a new current state which should be a child of the last known checkpoint.

type TipsetOrderer

type TipsetOrderer interface {
	Precedes(ctx context.Context, from, to types.TipSetKey) (bool, error)
}

TipsetOrderer resolves ordering information between TipSets.