def from_header(cls, header: BlockHeaderAPI,
chaindb: ChainDatabaseAPI) -> "FrontierBlock":
"""
Returns the block denoted by the given block header.
:raise eth.exceptions.BlockNotFound: if transactions or uncle headers are missing
"""
if header.uncles_hash == EMPTY_UNCLE_HASH:
uncles: Tuple[BlockHeader, ...] = ()
else:
try:
uncles = chaindb.get_block_uncles(header.uncles_hash)
except HeaderNotFound as exc:
raise BlockNotFound(
f"Uncles not found in database for {header}: {exc}"
) from exc
try:
transactions = chaindb.get_block_transactions(
header, cls.get_transaction_class())
except MissingTrieNode as exc:
raise BlockNotFound(
f"Transactions not found in database for {header}: {exc}"
) from exc
return cls(
header=header,
transactions=transactions,
uncles=uncles,
)
def from_header(cls, header: BlockHeaderAPI, chaindb: ChainDatabaseAPI) -> "FrontierBlock":
"""
Returns the block denoted by the given block header.
"""
if header.uncles_hash == EMPTY_UNCLE_HASH:
uncles: Tuple[BlockHeader, ...] = ()
else:
uncles = chaindb.get_block_uncles(header.uncles_hash)
transactions = chaindb.get_block_transactions(header, cls.get_transaction_class())
return cls(
header=header,
transactions=transactions,
uncles=uncles,
)