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130 lines
4.7 KiB
130 lines
4.7 KiB
#!/usr/bin/env python3
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# Copyright (c) 2021 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Stress tests related to node initialization."""
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import os
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from pathlib import Path
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from test_framework.test_framework import BitcoinTestFramework, SkipTest
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from test_framework.test_node import ErrorMatch
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from test_framework.util import assert_equal
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class InitStressTest(BitcoinTestFramework):
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"""
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Ensure that initialization can be interrupted at a number of points and not impair
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subsequent starts.
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"""
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def set_test_params(self):
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self.setup_clean_chain = False
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self.num_nodes = 1
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def run_test(self):
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"""
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- test terminating initialization after seeing a certain log line.
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- test removing certain essential files to test startup error paths.
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"""
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# TODO: skip Windows for now since it isn't clear how to SIGTERM.
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#
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# Windows doesn't support `process.terminate()`.
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# and other approaches (like below) don't work:
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#
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# os.kill(node.process.pid, signal.CTRL_C_EVENT)
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if os.name == 'nt':
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raise SkipTest("can't SIGTERM on Windows")
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self.stop_node(0)
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node = self.nodes[0]
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def sigterm_node():
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node.process.terminate()
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node.process.wait()
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def check_clean_start():
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"""Ensure that node restarts successfully after various interrupts."""
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node.start()
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node.wait_for_rpc_connection()
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assert_equal(200, node.getblockcount())
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lines_to_terminate_after = [
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'Validating signatures for all blocks',
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'scheduler thread start',
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'Starting HTTP server',
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'Loading P2P addresses',
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'Loading banlist',
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'Loading block index',
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'Switching active chainstate',
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'Checking all blk files are present',
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'Loaded best chain:',
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'init message: Verifying blocks',
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'init message: Starting network threads',
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'net thread start',
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'addcon thread start',
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'loadblk thread start',
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'txindex thread start',
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'block filter index thread start',
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'coinstatsindex thread start',
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'msghand thread start',
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'net thread start',
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'addcon thread start',
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]
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if self.is_wallet_compiled():
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lines_to_terminate_after.append('Verifying wallet')
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for terminate_line in lines_to_terminate_after:
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self.log.info(f"Starting node and will exit after line '{terminate_line}'")
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with node.wait_for_debug_log([terminate_line], ignore_case=True):
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node.start(extra_args=['-txindex=1', '-blockfilterindex=1', '-coinstatsindex=1'])
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self.log.debug("Terminating node after terminate line was found")
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sigterm_node()
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check_clean_start()
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self.stop_node(0)
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self.log.info("Test startup errors after removing certain essential files")
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files_to_disturb = {
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'blocks/index/*.ldb': 'Error opening block database.',
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'chainstate/*.ldb': 'Error opening block database.',
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'blocks/blk*.dat': 'Error loading block database.',
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}
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for file_patt, err_fragment in files_to_disturb.items():
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target_files = list(node.chain_path.glob(file_patt))
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for target_file in target_files:
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self.log.info(f"Tweaking file to ensure failure {target_file}")
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bak_path = str(target_file) + ".bak"
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target_file.rename(bak_path)
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# TODO: at some point, we should test perturbing the files instead of removing
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# them, e.g.
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#
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# contents = target_file.read_bytes()
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# tweaked_contents = bytearray(contents)
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# tweaked_contents[50:250] = b'1' * 200
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# target_file.write_bytes(bytes(tweaked_contents))
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#
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# At the moment I can't get this to work (bitcoind loads successfully?) so
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# investigate doing this later.
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node.assert_start_raises_init_error(
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extra_args=['-txindex=1', '-blockfilterindex=1', '-coinstatsindex=1'],
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expected_msg=err_fragment,
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match=ErrorMatch.PARTIAL_REGEX,
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)
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for target_file in target_files:
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bak_path = str(target_file) + ".bak"
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self.log.debug(f"Restoring file from {bak_path} and restarting")
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Path(bak_path).rename(target_file)
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check_clean_start()
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self.stop_node(0)
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if __name__ == '__main__':
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InitStressTest().main()
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