549 lines
20 KiB
Python
549 lines
20 KiB
Python
import logging
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import asyncio
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from asyncio import wrap_future
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from concurrent.futures.thread import ThreadPoolExecutor
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from typing import Tuple, List, Union, Callable, Any, Awaitable, Iterable
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import sqlite3
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from torba.client.basetransaction import BaseTransaction
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from torba.client.baseaccount import BaseAccount
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log = logging.getLogger(__name__)
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class AIOSQLite:
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def __init__(self):
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# has to be single threaded as there is no mapping of thread:connection
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self.executor = ThreadPoolExecutor(max_workers=1)
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self.connection: sqlite3.Connection = None
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@classmethod
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async def connect(cls, path: Union[bytes, str], *args, **kwargs):
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db = cls()
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db.connection = await wrap_future(db.executor.submit(sqlite3.connect, path, *args, **kwargs))
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return db
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async def close(self):
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def __close(conn):
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self.executor.submit(conn.close)
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self.executor.shutdown(wait=True)
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conn = self.connection
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if not conn:
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return
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self.connection = None
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return asyncio.get_event_loop_policy().get_event_loop().call_later(0.01, __close, conn)
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def executemany(self, sql: str, params: Iterable):
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def __executemany_in_a_transaction(conn: sqlite3.Connection, *args, **kwargs):
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return conn.executemany(*args, **kwargs)
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return self.run(__executemany_in_a_transaction, sql, params)
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def executescript(self, script: str) -> Awaitable:
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return wrap_future(self.executor.submit(self.connection.executescript, script))
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def execute_fetchall(self, sql: str, parameters: Iterable = None) -> Awaitable[Iterable[sqlite3.Row]]:
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parameters = parameters if parameters is not None else []
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def __fetchall(conn: sqlite3.Connection, *args, **kwargs):
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return conn.execute(*args, **kwargs).fetchall()
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return wrap_future(self.executor.submit(__fetchall, self.connection, sql, parameters))
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def execute(self, sql: str, parameters: Iterable = None) -> Awaitable[sqlite3.Cursor]:
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parameters = parameters if parameters is not None else []
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return self.run(lambda conn, sql, parameters: conn.execute(sql, parameters), sql, parameters)
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def run(self, fun, *args, **kwargs) -> Awaitable:
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return wrap_future(self.executor.submit(self.__run_transaction, fun, *args, **kwargs))
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def __run_transaction(self, fun: Callable[[sqlite3.Connection, Any, Any], Any], *args, **kwargs):
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self.connection.execute('begin')
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try:
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result = fun(self.connection, *args, **kwargs) # type: ignore
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self.connection.commit()
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return result
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except (Exception, OSError): # as e:
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#log.exception('Error running transaction:', exc_info=e)
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self.connection.rollback()
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raise
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def run_with_foreign_keys_disabled(self, fun, *args, **kwargs) -> Awaitable:
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return wrap_future(
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self.executor.submit(self.__run_transaction_with_foreign_keys_disabled, fun, *args, **kwargs)
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)
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def __run_transaction_with_foreign_keys_disabled(self,
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fun: Callable[[sqlite3.Connection, Any, Any], Any],
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*args, **kwargs):
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foreign_keys_enabled, = self.connection.execute("pragma foreign_keys").fetchone()
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if not foreign_keys_enabled:
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raise sqlite3.IntegrityError("foreign keys are disabled, use `AIOSQLite.run` instead")
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try:
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self.connection.execute('pragma foreign_keys=off')
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return self.__run_transaction(fun, *args, **kwargs)
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finally:
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self.connection.execute('pragma foreign_keys=on')
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def constraints_to_sql(constraints, joiner=' AND ', prepend_key=''):
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sql, values = [], {}
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for key, constraint in constraints.items():
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tag = '0'
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if '#' in key:
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key, tag = key[:key.index('#')], key[key.index('#')+1:]
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col, op, key = key, '=', key.replace('.', '_')
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if key.startswith('$'):
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values[key] = constraint
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continue
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elif key.endswith('__not'):
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col, op = col[:-len('__not')], '!='
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elif key.endswith('__is_null'):
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col = col[:-len('__is_null')]
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sql.append(f'{col} IS NULL')
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continue
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elif key.endswith('__is_not_null'):
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col = col[:-len('__is_not_null')]
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sql.append(f'{col} IS NOT NULL')
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continue
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elif key.endswith('__lt'):
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col, op = col[:-len('__lt')], '<'
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elif key.endswith('__lte'):
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col, op = col[:-len('__lte')], '<='
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elif key.endswith('__gt'):
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col, op = col[:-len('__gt')], '>'
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elif key.endswith('__gte'):
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col, op = col[:-len('__gte')], '>='
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elif key.endswith('__like'):
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col, op = col[:-len('__like')], 'LIKE'
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elif key.endswith('__not_like'):
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col, op = col[:-len('__not_like')], 'NOT LIKE'
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elif key.endswith('__in') or key.endswith('__not_in'):
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if key.endswith('__in'):
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col, op = col[:-len('__in')], 'IN'
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else:
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col, op = col[:-len('__not_in')], 'NOT IN'
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if constraint:
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if isinstance(constraint, (list, set, tuple)):
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keys = []
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for i, val in enumerate(constraint):
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keys.append(f':{key}{tag}_{i}')
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values[f'{key}{tag}_{i}'] = val
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sql.append(f'{col} {op} ({", ".join(keys)})')
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elif isinstance(constraint, str):
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sql.append(f'{col} {op} ({constraint})')
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else:
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raise ValueError(f"{col} requires a list, set or string as constraint value.")
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continue
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elif key.endswith('__any') or key.endswith('__or'):
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where, subvalues = constraints_to_sql(constraint, ' OR ', key+tag+'_')
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sql.append(f'({where})')
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values.update(subvalues)
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continue
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elif key.endswith('__and'):
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where, subvalues = constraints_to_sql(constraint, ' AND ', key+tag+'_')
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sql.append(f'({where})')
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values.update(subvalues)
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continue
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sql.append(f'{col} {op} :{prepend_key}{key}{tag}')
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values[prepend_key+key+tag] = constraint
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return joiner.join(sql) if sql else '', values
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def query(select, **constraints):
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sql = [select]
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limit = constraints.pop('limit', None)
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offset = constraints.pop('offset', None)
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order_by = constraints.pop('order_by', None)
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constraints.pop('my_account', None)
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account = constraints.pop('account', None)
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if account is not None:
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if not isinstance(account, list):
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account = [account]
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constraints['account__in'] = [
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(a.public_key.address if isinstance(a, BaseAccount) else a) for a in account
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]
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where, values = constraints_to_sql(constraints)
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if where:
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sql.append('WHERE')
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sql.append(where)
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if order_by:
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sql.append('ORDER BY')
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if isinstance(order_by, str):
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sql.append(order_by)
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elif isinstance(order_by, list):
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sql.append(', '.join(order_by))
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else:
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raise ValueError("order_by must be string or list")
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if limit is not None:
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sql.append('LIMIT {}'.format(limit))
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if offset is not None:
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sql.append('OFFSET {}'.format(offset))
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return ' '.join(sql), values
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def rows_to_dict(rows, fields):
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if rows:
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return [dict(zip(fields, r)) for r in rows]
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else:
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return []
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class SQLiteMixin:
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CREATE_TABLES_QUERY: str
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def __init__(self, path):
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self._db_path = path
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self.db: AIOSQLite = None
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self.ledger = None
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async def open(self):
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log.info("connecting to database: %s", self._db_path)
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self.db = await AIOSQLite.connect(self._db_path)
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await self.db.executescript(self.CREATE_TABLES_QUERY)
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async def close(self):
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await self.db.close()
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@staticmethod
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def _insert_sql(table: str, data: dict, ignore_duplicate: bool = False) -> Tuple[str, List]:
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columns, values = [], []
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for column, value in data.items():
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columns.append(column)
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values.append(value)
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or_ignore = ""
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if ignore_duplicate:
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or_ignore = " OR IGNORE"
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sql = "INSERT{} INTO {} ({}) VALUES ({})".format(
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or_ignore, table, ', '.join(columns), ', '.join(['?'] * len(values))
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)
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return sql, values
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@staticmethod
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def _update_sql(table: str, data: dict, where: str,
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constraints: Union[list, tuple]) -> Tuple[str, list]:
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columns, values = [], []
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for column, value in data.items():
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columns.append("{} = ?".format(column))
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values.append(value)
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values.extend(constraints)
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sql = "UPDATE {} SET {} WHERE {}".format(
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table, ', '.join(columns), where
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)
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return sql, values
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class BaseDatabase(SQLiteMixin):
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PRAGMAS = """
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pragma journal_mode=WAL;
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"""
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CREATE_PUBKEY_ADDRESS_TABLE = """
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create table if not exists pubkey_address (
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address text primary key,
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account text not null,
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chain integer not null,
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position integer not null,
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pubkey blob not null,
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history text,
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used_times integer not null default 0
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);
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"""
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CREATE_PUBKEY_ADDRESS_INDEX = """
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create index if not exists pubkey_address_account_idx on pubkey_address (account);
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"""
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CREATE_TX_TABLE = """
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create table if not exists tx (
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txid text primary key,
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raw blob not null,
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height integer not null,
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position integer not null,
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is_verified boolean not null default 0
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);
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"""
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CREATE_TXO_TABLE = """
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create table if not exists txo (
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txid text references tx,
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txoid text primary key,
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address text references pubkey_address,
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position integer not null,
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amount integer not null,
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script blob not null,
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is_reserved boolean not null default 0
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);
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"""
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CREATE_TXO_INDEX = """
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create index if not exists txo_address_idx on txo (address);
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"""
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CREATE_TXI_TABLE = """
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create table if not exists txi (
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txid text references tx,
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txoid text references txo,
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address text references pubkey_address
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);
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"""
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CREATE_TXI_INDEX = """
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create index if not exists txi_address_idx on txi (address);
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create index if not exists txi_txoid_idx on txi (txoid);
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"""
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CREATE_TABLES_QUERY = (
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PRAGMAS +
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CREATE_TX_TABLE +
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CREATE_PUBKEY_ADDRESS_TABLE +
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CREATE_PUBKEY_ADDRESS_INDEX +
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CREATE_TXO_TABLE +
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CREATE_TXO_INDEX +
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CREATE_TXI_TABLE +
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CREATE_TXI_INDEX
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)
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@staticmethod
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def txo_to_row(tx, address, txo):
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return {
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'txid': tx.id,
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'txoid': txo.id,
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'address': address,
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'position': txo.position,
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'amount': txo.amount,
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'script': sqlite3.Binary(txo.script.source)
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}
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async def insert_transaction(self, tx):
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await self.db.execute(*self._insert_sql('tx', {
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'txid': tx.id,
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'raw': sqlite3.Binary(tx.raw),
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'height': tx.height,
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'position': tx.position,
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'is_verified': tx.is_verified
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}))
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async def update_transaction(self, tx):
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await self.db.execute(*self._update_sql("tx", {
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'height': tx.height, 'position': tx.position, 'is_verified': tx.is_verified
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}, 'txid = ?', (tx.id,)))
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def save_transaction_io(self, tx: BaseTransaction, address, txhash, history):
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def _transaction(conn: sqlite3.Connection, tx: BaseTransaction, address, txhash, history):
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for txo in tx.outputs:
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if txo.script.is_pay_pubkey_hash and txo.script.values['pubkey_hash'] == txhash:
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conn.execute(*self._insert_sql(
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"txo", self.txo_to_row(tx, address, txo), ignore_duplicate=True
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))
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elif txo.script.is_pay_script_hash:
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# TODO: implement script hash payments
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log.warning('Database.save_transaction_io: pay script hash is not implemented!')
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for txi in tx.inputs:
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if txi.txo_ref.txo is not None:
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txo = txi.txo_ref.txo
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if txo.get_address(self.ledger) == address:
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conn.execute(*self._insert_sql("txi", {
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'txid': tx.id,
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'txoid': txo.id,
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'address': address,
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}, ignore_duplicate=True))
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conn.execute(
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"UPDATE pubkey_address SET history = ?, used_times = ? WHERE address = ?",
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(history, history.count(':')//2, address)
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)
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return self.db.run(_transaction, tx, address, txhash, history)
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async def reserve_outputs(self, txos, is_reserved=True):
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txoids = ((is_reserved, txo.id) for txo in txos)
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await self.db.executemany("UPDATE txo SET is_reserved = ? WHERE txoid = ?", txoids)
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async def release_outputs(self, txos):
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await self.reserve_outputs(txos, is_reserved=False)
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async def rewind_blockchain(self, above_height): # pylint: disable=no-self-use
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# TODO:
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# 1. delete transactions above_height
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# 2. update address histories removing deleted TXs
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return True
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async def select_transactions(self, cols, account=None, **constraints):
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if 'txid' not in constraints and account is not None:
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constraints['$account'] = account.public_key.address
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constraints['txid__in'] = """
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SELECT txo.txid FROM txo
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JOIN pubkey_address USING (address) WHERE pubkey_address.account = :$account
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UNION
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SELECT txi.txid FROM txi
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JOIN pubkey_address USING (address) WHERE pubkey_address.account = :$account
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"""
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return await self.db.execute_fetchall(
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*query("SELECT {} FROM tx".format(cols), **constraints)
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)
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async def get_transactions(self, my_account=None, **constraints):
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my_account = my_account or constraints.get('account', None)
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tx_rows = await self.select_transactions(
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'txid, raw, height, position, is_verified',
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order_by=["height=0 DESC", "height DESC", "position DESC"],
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**constraints
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)
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if not tx_rows:
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return []
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txids, txs, txi_txoids = [], [], []
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for row in tx_rows:
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txids.append(row[0])
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txs.append(self.ledger.transaction_class(
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raw=row[1], height=row[2], position=row[3], is_verified=bool(row[4])
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))
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for txi in txs[-1].inputs:
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txi_txoids.append(txi.txo_ref.id)
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annotated_txos = {
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txo.id: txo for txo in
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(await self.get_txos(
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my_account=my_account,
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txid__in=txids
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))
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}
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referenced_txos = {
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txo.id: txo for txo in
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(await self.get_txos(
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my_account=my_account,
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txoid__in=txi_txoids
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))
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}
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for tx in txs:
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for txi in tx.inputs:
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txo = referenced_txos.get(txi.txo_ref.id)
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if txo:
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txi.txo_ref = txo.ref
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for txo in tx.outputs:
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_txo = annotated_txos.get(txo.id)
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if _txo:
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txo.update_annotations(_txo)
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else:
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txo.update_annotations(None)
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return txs
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async def get_transaction_count(self, **constraints):
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constraints.pop('offset', None)
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constraints.pop('limit', None)
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constraints.pop('order_by', None)
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count = await self.select_transactions('count(*)', **constraints)
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return count[0][0]
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async def get_transaction(self, **constraints):
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txs = await self.get_transactions(limit=1, **constraints)
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if txs:
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return txs[0]
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async def select_txos(self, cols, **constraints):
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return await self.db.execute_fetchall(*query(
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"SELECT {} FROM txo"
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" JOIN pubkey_address USING (address)"
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" JOIN tx USING (txid)".format(cols), **constraints
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))
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async def get_txos(self, my_account=None, **constraints):
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my_account = my_account or constraints.get('account', None)
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if isinstance(my_account, BaseAccount):
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my_account = my_account.public_key.address
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if 'order_by' not in constraints:
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constraints['order_by'] = ["tx.height=0 DESC", "tx.height DESC", "tx.position DESC"]
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rows = await self.select_txos(
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"tx.txid, raw, tx.height, tx.position, tx.is_verified, txo.position, chain, account",
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**constraints
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)
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txos = []
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txs = {}
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for row in rows:
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if row[0] not in txs:
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txs[row[0]] = self.ledger.transaction_class(
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row[1], height=row[2], position=row[3], is_verified=row[4]
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)
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txo = txs[row[0]].outputs[row[5]]
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txo.is_change = row[6] == 1
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txo.is_my_account = row[7] == my_account
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txos.append(txo)
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return txos
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async def get_txo_count(self, **constraints):
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constraints.pop('offset', None)
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constraints.pop('limit', None)
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constraints.pop('order_by', None)
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count = await self.select_txos('count(*)', **constraints)
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return count[0][0]
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@staticmethod
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def constrain_utxo(constraints):
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constraints['is_reserved'] = False
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constraints['txoid__not_in'] = "SELECT txoid FROM txi"
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def get_utxos(self, **constraints):
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self.constrain_utxo(constraints)
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return self.get_txos(**constraints)
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def get_utxo_count(self, **constraints):
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self.constrain_utxo(constraints)
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return self.get_txo_count(**constraints)
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async def get_balance(self, **constraints):
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self.constrain_utxo(constraints)
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balance = await self.select_txos('SUM(amount)', **constraints)
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return balance[0][0] or 0
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async def select_addresses(self, cols, **constraints):
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return await self.db.execute_fetchall(*query(
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"SELECT {} FROM pubkey_address".format(cols), **constraints
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))
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async def get_addresses(self, cols=('address', 'account', 'chain', 'position', 'used_times'),
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**constraints):
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addresses = await self.select_addresses(', '.join(cols), **constraints)
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return rows_to_dict(addresses, cols)
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async def get_address_count(self, **constraints):
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count = await self.select_addresses('count(*)', **constraints)
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return count[0][0]
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async def get_address(self, **constraints):
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addresses = await self.get_addresses(
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cols=('address', 'account', 'chain', 'position', 'pubkey', 'history', 'used_times'),
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limit=1, **constraints
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)
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if addresses:
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return addresses[0]
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async def add_keys(self, account, chain, keys):
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await self.db.executemany(
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"insert into pubkey_address (address, account, chain, position, pubkey) values (?, ?, ?, ?, ?)",
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((pubkey.address, account.public_key.address, chain,
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position, sqlite3.Binary(pubkey.pubkey_bytes))
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for position, pubkey in keys)
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)
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async def _set_address_history(self, address, history):
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await self.db.execute(
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"UPDATE pubkey_address SET history = ?, used_times = ? WHERE address = ?",
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(history, history.count(':')//2, address)
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)
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async def set_address_history(self, address, history):
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await self._set_address_history(address, history)
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