fork

type GenesisSource interface {
	// Description returns a human-readable source type label.
	Description() string

	// FetchGenesis returns the source chain's genesis document.
	FetchGenesis(ctx context.Context) (*bft.GenesisDoc, error)

	// Close releases any resources held by the source.
	Close() error
}

type TxsSource interface {
	// Description returns a human-readable source type label.
	Description() string

	// LatestHeight returns the latest committed block height known to
	// this source. Used to auto-detect halt height when --halt-height
	// is not specified.
	LatestHeight(ctx context.Context) (int64, error)

	// FetchTxs fetches all transactions in [fromHeight, toHeight] with
	// metadata (BlockHeight, Timestamp, ChainID populated). chainID is
	// supplied by the caller (sourced from the GenesisSource) so that
	// TxsSource implementations do not need to read genesis themselves.
	// Progress is reported via io.
	FetchTxs(ctx context.Context, chainID string, fromHeight, toHeight int64, io commands.IO) ([]gnoland.TxWithMetadata, error)

	// Close releases any resources held by the source.
	Close() error
}