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DBError

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This commit is contained in:
Jack Robison 2021-05-20 13:32:52 -04:00
parent d27c2cc1e9
commit e77f9981df
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1 changed files with 8 additions and 14 deletions
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24
lbry/wallet/server/leveldb.py
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@ -128,18 +128,13 @@ class DBState(typing.NamedTuple):
return cls(*DB_STATE_STRUCT.unpack(packed[:DB_STATE_STRUCT_SIZE])) return cls(*DB_STATE_STRUCT.unpack(packed[:DB_STATE_STRUCT_SIZE]))
class LevelDB: class DBError(Exception):
"""Simple wrapper of the backend database for querying.
Performs no DB update, though the DB will be cleaned on opening if
it was shutdown uncleanly.
"""
DB_VERSIONS = HIST_DB_VERSIONS = [7]
class DBError(Exception):
"""Raised on general DB errors generally indicating corruption.""" """Raised on general DB errors generally indicating corruption."""
class LevelDB:
DB_VERSIONS = HIST_DB_VERSIONS = [7]
def __init__(self, env): def __init__(self, env):
self.logger = util.class_logger(__name__, self.__class__.__name__) self.logger = util.class_logger(__name__, self.__class__.__name__)
self.env = env self.env = env
@ -951,8 +946,7 @@ class LevelDB:
""" """
if start_height < 0 or count < 0: if start_height < 0 or count < 0:
raise self.DBError(f'{count:,d} headers starting at ' raise DBError(f'{count:,d} headers starting at {start_height:,d} not on disk')
f'{start_height:,d} not on disk')
disk_count = max(0, min(count, self.db_height + 1 - start_height)) disk_count = max(0, min(count, self.db_height + 1 - start_height))
if disk_count: if disk_count:
@ -1023,7 +1017,7 @@ class LevelDB:
async def fs_block_hashes(self, height, count): async def fs_block_hashes(self, height, count):
if height + count > len(self.headers): if height + count > len(self.headers):
raise self.DBError(f'only got {len(self.headers) - height:,d} headers starting at {height:,d}, not {count:,d}') raise DBError(f'only got {len(self.headers) - height:,d} headers starting at {height:,d}, not {count:,d}')
return [self.coin.header_hash(header) for header in self.headers[height:height + count]] return [self.coin.header_hash(header) for header in self.headers[height:height + count]]
async def limited_history(self, hashX, *, limit=1000): async def limited_history(self, hashX, *, limit=1000):
@ -1164,12 +1158,12 @@ class LevelDB:
state = DBState.unpack(state) state = DBState.unpack(state)
self.db_version = state.db_version self.db_version = state.db_version
if self.db_version not in self.DB_VERSIONS: if self.db_version not in self.DB_VERSIONS:
raise self.DBError(f'your DB version is {self.db_version} but this ' raise DBError(f'your DB version is {self.db_version} but this '
f'software only handles versions {self.DB_VERSIONS}') f'software only handles versions {self.DB_VERSIONS}')
# backwards compat # backwards compat
genesis_hash = state.genesis genesis_hash = state.genesis
if genesis_hash.hex() != self.coin.GENESIS_HASH: if genesis_hash.hex() != self.coin.GENESIS_HASH:
raise self.DBError(f'DB genesis hash {genesis_hash} does not ' raise DBError(f'DB genesis hash {genesis_hash} does not '
f'match coin {self.coin.GENESIS_HASH}') f'match coin {self.coin.GENESIS_HASH}')
self.db_height = state.height self.db_height = state.height
self.db_tx_count = state.tx_count self.db_tx_count = state.tx_count