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21 lines
729 B
Python
21 lines
729 B
Python
import dbutils
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import common
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import rlp as rlp
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from eth.rlp.headers import BlockHeader, BlockHeaderAPI
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def lastBlockNumber(env):
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b = env.open_db(dbutils.HeadHeaderKey, create=False)
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b1 = env.open_db(dbutils.HeaderNumberPrefix, create=False)
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with env.begin(write=False) as txn:
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blockHashData = txn.get(dbutils.HeadHeaderKey, db=b)
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assert len(blockHashData) == common.HashLength, "%d != %d" % (len(blockHashData), common.HashLength)
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blockNumberData = txn.get(blockHashData, db=b1)
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assert len(blockNumberData) == 8
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return common.bytesToUint64(blockNumberData)
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def decode_block_header(header_rlp: bytes) -> BlockHeaderAPI:
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return rlp.decode(header_rlp, sedes=BlockHeader)
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