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#!/usr/bin/env python3
# Copyright (c) 2018-2020 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Check that it's not possible to start a second bitcoind instance using the same datadir or wallet."""
import os
import random
import string
from test_framework.test_framework import BitcoinTestFramework
from test_framework.test_node import ErrorMatch
class FilelockTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 2
def setup_network(self):
self.add_nodes(self.num_nodes, extra_args=None)
self.nodes[0].start()
self.nodes[0].wait_for_rpc_connection()
def run_test(self):
datadir = os.path.join(self.nodes[0].datadir, self.chain)
self.log.info("Using datadir {}".format(datadir))
self.log.info("Check that we can't start a second bitcoind instance using the same datadir")
expected_msg = "Error: Cannot obtain a lock on data directory {0}. {1} is probably already running.".format(datadir, self.config['environment']['PACKAGE_NAME'])
self.nodes[1].assert_start_raises_init_error(extra_args=['-datadir={}'.format(self.nodes[0].datadir), '-noserver'], expected_msg=expected_msg)
if self.is_wallet_compiled():
def check_wallet_filelock(descriptors):
wallet_name = ''.join([random.choice(string.ascii_lowercase) for _ in range(6)])
self.nodes[0].createwallet(wallet_name=wallet_name, descriptors=descriptors)
wallet_dir = os.path.join(datadir, 'wallets')
self.log.info("Check that we can't start a second bitcoind instance using the same wallet")
if descriptors:
expected_msg = "Error: SQLiteDatabase: Unable to obtain an exclusive lock on the database, is it being used by another bitcoind?"
else:
expected_msg = "Error: Error initializing wallet database environment"
self.nodes[1].assert_start_raises_init_error(extra_args=['-walletdir={}'.format(wallet_dir), '-wallet=' + wallet_name, '-noserver'], expected_msg=expected_msg, match=ErrorMatch.PARTIAL_REGEX)
if self.is_bdb_compiled():
check_wallet_filelock(False)
if self.is_sqlite_compiled():
check_wallet_filelock(True)
if __name__ == '__main__':
FilelockTest().main()