syncer

type BlockValidator interface {
	// ValidateHeaderSemantic validates conditions on a block header that can be
	// checked with the parent header but not parent state.
	ValidateHeaderSemantic(context.Context, *block.Block, *block.TipSet) error
	// ValidateMessagesSemantic validates a block's messages against parent state without applying the messages
	ValidateMessagesSemantic(context.Context, *block.Block, *block.TipSet) error
}

type ChainReaderWriter interface {
	GetHead() *block.TipSet
	GetTipSet(block.TipSetKey) (*block.TipSet, error)
	GetTipSetStateRoot(*block.TipSet) (cid.Cid, error)
	GetTipSetReceiptsRoot(*block.TipSet) (cid.Cid, error)
	HasTipSetAndState(context.Context, *block.TipSet) bool
	PutTipSetMetadata(context.Context, *chain.TipSetMetadata) error
	SetHead(context.Context, *block.TipSet) error
	HasSiblingState(*block.TipSet) bool
	GetSiblingState(*block.TipSet) ([]*chain.TipSetMetadata, error)
	GetLatestBeaconEntry(*block.TipSet) (*block.BeaconEntry, error)
	GetGenesisBlock(context.Context) (*block.Block, error)
}

type ChainSelector interface {
	// IsHeavier returns true if tipset a is heavier than tipset b and false if
	// tipset b is heavier than tipset a.
	IsHeavier(ctx context.Context, a, b *block.TipSet) (bool, error)
	// Weight returns the weight of a tipset after the upgrade to version 1
	Weight(ctx context.Context, ts *block.TipSet) (big.Int, error)
}

type Fetcher interface {
	// FetchTipSets will only fetch TipSets that evaluate to `false` when passed to `done`,
	// this includes the provided `ts`. The TipSet that evaluates to true when
	// passed to `done` will be in the returned slice. The returns slice of TipSets is in Traversal order.
	FetchTipSets(context.Context, block.TipSetKey, peer.ID, func(*block.TipSet) (bool, error)) ([]*block.TipSet, error)

	// FetchTipSetHeaders will fetch only the headers of tipset blocks.
	// Returned slice in reversal order
	FetchTipSetHeaders(context.Context, block.TipSetKey, peer.ID, func(*block.TipSet) (bool, error)) ([]*block.TipSet, error)
}

type FullBlockValidator interface {
	// RunStateTransition returns the state root CID resulting from applying the input ts to the
	// prior `stateRoot`.  It returns an error if the transition is invalid.
	RunStateTransition(ctx context.Context, ts *block.TipSet, parentStateRoot cid.Cid) (root cid.Cid, receipts []types.MessageReceipt, err error)
	// Todo add by force
	ValidateMining(ctx context.Context, parent, ts *block.TipSet, parentWeight big.Int, parentReceiptRoot cid.Cid) error
}

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