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#!/usr/bin/env python3
# Copyright (c) 2018-2022 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 random
import string
from test_framework.test_framework import BitcoinTestFramework
from test_framework.test_node import ErrorMatch
class FilelockTest(BitcoinTestFramework):
def add_options(self, parser):
self.add_wallet_options(parser)
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 = self.nodes[0].chain_path
self.log.info(f"Using datadir {datadir}")
self.log.info("Check that we can't start a second bitcoind instance using the same datadir")
expected_msg = f"Error: Cannot obtain a lock on data directory {datadir}. {self.config['environment']['PACKAGE_NAME']} is probably already running."
self.nodes[1].assert_start_raises_init_error(extra_args=[f'-datadir={self.nodes[0].datadir_path}', '-noserver'], expected_msg=expected_msg)
self.log.info("Check that cookie and PID file are not deleted when attempting to start a second bitcoind using the same datadir")
cookie_file = datadir / ".cookie"
assert cookie_file.exists() # should not be deleted during the second bitcoind instance shutdown
pid_file = datadir / "bitcoind.pid"
assert pid_file.exists()
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 = self.nodes[0].wallets_path
self.log.info("Check that we can't start a second bitcoind instance using the same wallet")
if descriptors:
expected_msg = f"Error: SQLiteDatabase: Unable to obtain an exclusive lock on the database, is it being used by another instance of {self.config['environment']['PACKAGE_NAME']}?"
else:
expected_msg = "Error: Error initializing wallet database environment"
self.nodes[1].assert_start_raises_init_error(extra_args=[f'-walletdir={wallet_dir}', f'-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(__file__).main()
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