mirror of
https://github.com/Chia-Network/chia-blockchain.git
synced 2026-08-24 10:05:29 -05:00
Arvid NorbergandGitHub
a100dda37e
* new DBWrapper supporting concurrent readers * adress review comments * fixup default database version, when file doesn't exist * remove unused argument
60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
from typing import List, Tuple
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from chia.types.blockchain_format.sized_bytes import bytes32
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from chia.util.db_wrapper import DBWrapper2
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import logging
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log = logging.getLogger(__name__)
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class HintStore:
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db_wrapper: DBWrapper2
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@classmethod
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async def create(cls, db_wrapper: DBWrapper2):
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self = cls()
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self.db_wrapper = db_wrapper
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async with self.db_wrapper.write_db() as conn:
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if self.db_wrapper.db_version == 2:
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await conn.execute("CREATE TABLE IF NOT EXISTS hints(coin_id blob, hint blob, UNIQUE (coin_id, hint))")
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else:
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await conn.execute(
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"CREATE TABLE IF NOT EXISTS hints(id INTEGER PRIMARY KEY AUTOINCREMENT, coin_id blob, hint blob)"
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)
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await conn.execute("CREATE INDEX IF NOT EXISTS hint_index on hints(hint)")
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return self
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async def get_coin_ids(self, hint: bytes) -> List[bytes32]:
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async with self.db_wrapper.read_db() as conn:
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cursor = await conn.execute("SELECT coin_id from hints WHERE hint=?", (hint,))
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rows = await cursor.fetchall()
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await cursor.close()
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coin_ids = []
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for row in rows:
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coin_ids.append(row[0])
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return coin_ids
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async def add_hints(self, coin_hint_list: List[Tuple[bytes32, bytes]]) -> None:
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async with self.db_wrapper.write_db() as conn:
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if self.db_wrapper.db_version == 2:
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cursor = await conn.executemany(
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"INSERT OR IGNORE INTO hints VALUES(?, ?)",
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coin_hint_list,
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)
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else:
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cursor = await conn.executemany(
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"INSERT INTO hints VALUES(?, ?, ?)",
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[(None,) + record for record in coin_hint_list],
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)
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await cursor.close()
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async def count_hints(self) -> int:
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async with self.db_wrapper.read_db() as conn:
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async with conn.execute("select count(*) from hints") as cursor:
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row = await cursor.fetchone()
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assert row is not None
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[count] = row
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return int(count)
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