468 lines
16 KiB
Python
468 lines
16 KiB
Python
import logging
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from typing import Tuple, List, Union
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import sqlite3
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import aiosqlite
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from torba.hash import TXRefImmutable
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from torba.basetransaction import BaseTransaction
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from torba.baseaccount import BaseAccount
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log = logging.getLogger(__name__)
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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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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('__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('__like'):
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col, op = col[:-len('__like')], '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 isinstance(constraint, (list, set)):
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items = ', '.join(
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"'{}'".format(item) if isinstance(item, str) else str(item)
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for item in constraint
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)
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elif isinstance(constraint, str):
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items = constraint
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else:
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raise ValueError("{} requires a list, set or string as constraint value.".format(col))
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sql.append('{} {} ({})'.format(col, op, items))
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continue
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elif key.endswith('__any'):
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where, subvalues = constraints_to_sql(constraint, ' OR ', key+'_')
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sql.append('({})'.format(where))
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values.update(subvalues)
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continue
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sql.append('{} {} :{}'.format(col, op, prepend_key+key))
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values[prepend_key+key] = 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 is not None:
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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.Connection = 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 = aiosqlite.connect(self._db_path)
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await self.db.__aenter__()
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await self.db.executescript(self.CREATE_TABLES_QUERY)
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await self.db.commit()
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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) -> 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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sql = "INSERT INTO {} ({}) VALUES ({})".format(
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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 save_transaction_io(self, save_tx, tx: BaseTransaction, address, txhash, history):
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if save_tx == 'insert':
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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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elif save_tx == 'update':
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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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existing_txos = [r[0] for r in await self.db.execute_fetchall(*query(
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"SELECT position FROM txo", txid=tx.id
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))]
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for txo in tx.outputs:
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if txo.position in existing_txos:
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continue
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if txo.script.is_pay_pubkey_hash and txo.script.values['pubkey_hash'] == txhash:
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await self.db.execute(*self._insert_sql("txo", self.txo_to_row(tx, address, txo)))
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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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# lookup the address associated with each TXI (via its TXO)
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txoid_to_address = {r[0]: r[1] for r in await self.db.execute_fetchall(*query(
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"SELECT txoid, address FROM txo", txoid__in=[txi.txo_ref.id for txi in tx.inputs]
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))}
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# list of TXIs that have already been added
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existing_txis = [r[0] for r in await self.db.execute_fetchall(*query(
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"SELECT txoid FROM txi", txid=tx.id
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))]
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for txi in tx.inputs:
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txoid = txi.txo_ref.id
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new_txi = txoid not in existing_txis
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address_matches = txoid_to_address.get(txoid) == address
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if new_txi and address_matches:
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await self.db.execute(*self._insert_sql("txi", {
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'txid': tx.id,
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'txoid': txoid,
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'address': address,
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}))
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await self._set_address_history(address, history)
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await self.db.commit()
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async def reserve_outputs(self, txos, is_reserved=True):
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txoids = [txo.id for txo in txos]
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await self.db.execute(
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"UPDATE txo SET is_reserved = ? WHERE txoid IN ({})".format(
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', '.join(['?']*len(txoids))
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), [is_reserved]+txoids
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)
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await self.db.commit()
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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 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 = [], []
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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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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=query("SELECT txoid FROM txi", **{'txid__in': txids})[0]
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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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rows = await self.select_txos(
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"amount, script, txid, tx.height, txo.position, chain, account", **constraints
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)
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output_class = self.ledger.transaction_class.output_class
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return [
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output_class(
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amount=row[0],
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script=output_class.script_class(row[1]),
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tx_ref=TXRefImmutable.from_id(row[2], row[3]),
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position=row[4],
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is_change=row[5] == 1,
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is_my_account=row[6] == my_account
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) for row in rows
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]
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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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sql = (
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"insert into pubkey_address "
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"(address, account, chain, position, pubkey) "
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"values "
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) + ', '.join(['(?, ?, ?, ?, ?)'] * len(keys))
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values = []
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for position, pubkey in keys:
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values.extend((
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pubkey.address, account.public_key.address, chain, position,
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sqlite3.Binary(pubkey.pubkey_bytes)
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))
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await self.db.execute(sql, values)
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await self.db.commit()
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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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await self.db.commit()
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