mirror of
https://github.com/Chia-Network/chia-blockchain.git
synced 2024-09-20 08:05:33 +03:00
121 lines
4.5 KiB
Python
121 lines
4.5 KiB
Python
from __future__ import annotations
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import logging
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from typing import List, Tuple
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from chia.types.coin_spend import CoinSpend
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from chia.util.db_wrapper import DBWrapper2
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from chia.util.ints import uint32
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log = logging.getLogger(__name__)
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class WalletPoolStore:
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db_wrapper: DBWrapper2
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@classmethod
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async def create(cls, wrapper: DBWrapper2):
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self = cls()
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self.db_wrapper = wrapper
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async with self.db_wrapper.writer_maybe_transaction() as conn:
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await conn.execute(
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"CREATE TABLE IF NOT EXISTS pool_state_transitions("
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" transition_index integer,"
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" wallet_id integer,"
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" height bigint,"
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" coin_spend blob,"
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" PRIMARY KEY(transition_index, wallet_id))"
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)
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return self
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async def add_spend(
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self,
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wallet_id: int,
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spend: CoinSpend,
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height: uint32,
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) -> None:
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"""
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Appends (or replaces) entries in the DB. The new list must be at least as long as the existing list, and the
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parent of the first spend must already be present in the DB. Note that this is not committed to the DB
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until db_wrapper.commit() is called. However it is written to the cache, so it can be fetched with
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get_all_state_transitions.
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"""
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async with self.db_wrapper.writer_maybe_transaction() as conn:
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# find the most recent transition in wallet_id
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rows = list(
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await conn.execute_fetchall(
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"SELECT transition_index, height, coin_spend "
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"FROM pool_state_transitions "
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"WHERE wallet_id=? "
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"ORDER BY transition_index DESC "
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"LIMIT 1",
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(wallet_id,),
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)
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)
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serialized_spend = bytes(spend)
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if len(rows) == 0:
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transition_index = 0
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else:
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existing = list(
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await conn.execute_fetchall(
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"SELECT COUNT(*) "
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"FROM pool_state_transitions "
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"WHERE wallet_id=? AND height=? AND coin_spend=?",
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(wallet_id, height, serialized_spend),
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)
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)
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if existing[0][0] != 0:
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# we already have this transition in the DB
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return
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row = rows[0]
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if height < row[1]:
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raise ValueError("Height cannot go down")
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prev = CoinSpend.from_bytes(row[2])
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if spend.coin.parent_coin_info != prev.coin.name():
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raise ValueError("New spend does not extend")
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transition_index = row[0]
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cursor = await conn.execute(
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"INSERT OR IGNORE INTO pool_state_transitions VALUES (?, ?, ?, ?)",
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(
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transition_index + 1,
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wallet_id,
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height,
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serialized_spend,
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),
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)
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await cursor.close()
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async def get_spends_for_wallet(self, wallet_id: int) -> List[Tuple[uint32, CoinSpend]]:
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"""
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Retrieves all entries for a wallet ID.
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"""
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async with self.db_wrapper.reader_no_transaction() as conn:
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rows = await conn.execute_fetchall(
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"SELECT height, coin_spend FROM pool_state_transitions WHERE wallet_id=? ORDER BY transition_index",
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(wallet_id,),
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)
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return [(uint32(row[0]), CoinSpend.from_bytes(row[1])) for row in rows]
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async def rollback(self, height: int, wallet_id_arg: int) -> None:
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"""
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Rollback removes all entries which have entry_height > height passed in. Note that this is not committed to the
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DB until db_wrapper.commit() is called. However it is written to the cache, so it can be fetched with
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get_all_state_transitions.
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"""
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async with self.db_wrapper.writer_maybe_transaction() as conn:
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cursor = await conn.execute(
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"DELETE FROM pool_state_transitions WHERE height>? AND wallet_id=?", (height, wallet_id_arg)
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)
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await cursor.close()
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async def delete_wallet(self, wallet_id: uint32) -> None:
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async with self.db_wrapper.writer_maybe_transaction() as conn:
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cursor = await conn.execute("DELETE FROM pool_state_transitions WHERE wallet_id=?", (wallet_id,))
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await cursor.close()
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