async def _open_dbs(self, for_sync, compacting):
assert self.utxo_db is None
# First UTXO DB
self.utxo_db = self.db_class('utxo', for_sync)
if self.utxo_db.is_new:
self.logger.info('created new database')
self.logger.info('creating metadata directory')
os.mkdir(os.path.join(self.env.db_dir, 'meta'))
coin_path = os.path.join(self.env.db_dir, 'meta', 'COIN')
with util.open_file(coin_path, create=True) as f:
f.write(f'ElectrumX databases and metadata for '
f'{self.coin.NAME} {self.coin.NET}'.encode())
if not self.coin.STATIC_BLOCK_HEADERS:
self.headers_offsets_file.write(0, bytes(8))
else:
self.logger.info(f'opened UTXO DB (for sync: {for_sync})')
self.read_utxo_state()
# Then history DB
self.utxo_flush_count = self.history.open_db(self.db_class, for_sync,
self.utxo_flush_count,
compacting)
self.clear_excess_undo_info()
# Read TX counts (requires meta directory)
await self._read_tx_counts()
async def _open_dbs(self, for_sync, compacting):
if self.executor is None:
self.executor = ThreadPoolExecutor(max(1, os.cpu_count() - 1))
coin_path = os.path.join(self.env.db_dir, 'COIN')
if not os.path.isfile(coin_path):
with util.open_file(coin_path, create=True) as f:
f.write(f'ElectrumX databases and metadata for '
f'{self.coin.NAME} {self.coin.NET}'.encode())
assert self.headers_db is None
self.headers_db = self.db_class('headers', for_sync)
if self.headers_db.is_new:
self.logger.info('created new headers db')
self.logger.info(f'opened headers DB (for sync: {for_sync})')
assert self.tx_count_db is None
self.tx_count_db = self.db_class('tx_count', for_sync)
if self.tx_count_db.is_new:
self.logger.info('created new tx count db')
self.logger.info(f'opened tx count DB (for sync: {for_sync})')
assert self.hashes_db is None
self.hashes_db = self.db_class('hashes', for_sync)
if self.hashes_db.is_new:
self.logger.info('created new tx hashes db')
self.logger.info(f'opened tx hashes DB (for sync: {for_sync})')
assert self.utxo_db is None
# First UTXO DB
self.utxo_db = self.db_class('utxo', for_sync)
if self.utxo_db.is_new:
self.logger.info('created new utxo db')
self.logger.info(f'opened utxo db (for sync: {for_sync})')
self.read_utxo_state()
# Then history DB
self.utxo_flush_count = self.history.open_db(self.db_class, for_sync,
self.utxo_flush_count,
compacting)
self.clear_excess_undo_info()
# Read TX counts (requires meta directory)
await self._read_tx_counts()
def read():
with util.open_file(self.raw_block_path(height)) as f:
return f.read(-1)
def read_raw_block(self, height):
"""Returns a raw block read from disk. Raises FileNotFoundError
if the block isn't on-disk."""
with util.open_file(self.raw_block_path(height)) as f:
return f.read(-1)
