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485 lines
20 KiB
485 lines
20 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2014-2016 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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"""Base class for RPC testing.""" |
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|
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from collections import deque |
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from enum import Enum |
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import logging |
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import optparse |
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import os |
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import pdb |
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import shutil |
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import sys |
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import tempfile |
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import time |
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import traceback |
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|
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from .authproxy import JSONRPCException |
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from . import coverage |
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from .test_node import TestNode |
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from .util import ( |
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MAX_NODES, |
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PortSeed, |
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assert_equal, |
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check_json_precision, |
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connect_nodes_bi, |
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disconnect_nodes, |
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initialize_datadir, |
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log_filename, |
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p2p_port, |
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set_node_times, |
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sync_blocks, |
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sync_mempools, |
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) |
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class TestStatus(Enum): |
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PASSED = 1 |
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FAILED = 2 |
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SKIPPED = 3 |
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TEST_EXIT_PASSED = 0 |
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TEST_EXIT_FAILED = 1 |
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TEST_EXIT_SKIPPED = 77 |
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class BitcoinTestFramework(object): |
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"""Base class for a bitcoin test script. |
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|
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Individual bitcoin test scripts should subclass this class and override the set_test_params() and run_test() methods. |
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Individual tests can also override the following methods to customize the test setup: |
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- add_options() |
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- setup_chain() |
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- setup_network() |
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- setup_nodes() |
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The __init__() and main() methods should not be overridden. |
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This class also contains various public and private helper methods.""" |
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def __init__(self): |
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"""Sets test framework defaults. Do not override this method. Instead, override the set_test_params() method""" |
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self.setup_clean_chain = False |
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self.nodes = [] |
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self.mocktime = 0 |
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self.set_test_params() |
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assert hasattr(self, "num_nodes"), "Test must set self.num_nodes in set_test_params()" |
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def main(self): |
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"""Main function. This should not be overridden by the subclass test scripts.""" |
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parser = optparse.OptionParser(usage="%prog [options]") |
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parser.add_option("--nocleanup", dest="nocleanup", default=False, action="store_true", |
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help="Leave bitcoinds and test.* datadir on exit or error") |
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parser.add_option("--noshutdown", dest="noshutdown", default=False, action="store_true", |
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help="Don't stop bitcoinds after the test execution") |
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parser.add_option("--srcdir", dest="srcdir", default=os.path.normpath(os.path.dirname(os.path.realpath(__file__)) + "/../../../src"), |
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help="Source directory containing bitcoind/bitcoin-cli (default: %default)") |
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parser.add_option("--cachedir", dest="cachedir", default=os.path.normpath(os.path.dirname(os.path.realpath(__file__)) + "/../../cache"), |
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help="Directory for caching pregenerated datadirs") |
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parser.add_option("--tmpdir", dest="tmpdir", help="Root directory for datadirs") |
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parser.add_option("-l", "--loglevel", dest="loglevel", default="INFO", |
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help="log events at this level and higher to the console. Can be set to DEBUG, INFO, WARNING, ERROR or CRITICAL. Passing --loglevel DEBUG will output all logs to console. Note that logs at all levels are always written to the test_framework.log file in the temporary test directory.") |
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parser.add_option("--tracerpc", dest="trace_rpc", default=False, action="store_true", |
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help="Print out all RPC calls as they are made") |
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parser.add_option("--portseed", dest="port_seed", default=os.getpid(), type='int', |
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help="The seed to use for assigning port numbers (default: current process id)") |
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parser.add_option("--coveragedir", dest="coveragedir", |
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help="Write tested RPC commands into this directory") |
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parser.add_option("--configfile", dest="configfile", |
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help="Location of the test framework config file") |
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parser.add_option("--pdbonfailure", dest="pdbonfailure", default=False, action="store_true", |
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help="Attach a python debugger if test fails") |
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self.add_options(parser) |
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(self.options, self.args) = parser.parse_args() |
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PortSeed.n = self.options.port_seed |
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os.environ['PATH'] = self.options.srcdir + ":" + self.options.srcdir + "/qt:" + os.environ['PATH'] |
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check_json_precision() |
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self.options.cachedir = os.path.abspath(self.options.cachedir) |
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# Set up temp directory and start logging |
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if self.options.tmpdir: |
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self.options.tmpdir = os.path.abspath(self.options.tmpdir) |
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os.makedirs(self.options.tmpdir, exist_ok=False) |
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else: |
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self.options.tmpdir = tempfile.mkdtemp(prefix="test") |
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self._start_logging() |
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success = TestStatus.FAILED |
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try: |
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self.setup_chain() |
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self.setup_network() |
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self.run_test() |
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success = TestStatus.PASSED |
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except JSONRPCException as e: |
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self.log.exception("JSONRPC error") |
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except SkipTest as e: |
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self.log.warning("Test Skipped: %s" % e.message) |
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success = TestStatus.SKIPPED |
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except AssertionError as e: |
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self.log.exception("Assertion failed") |
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except KeyError as e: |
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self.log.exception("Key error") |
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except Exception as e: |
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self.log.exception("Unexpected exception caught during testing") |
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except KeyboardInterrupt as e: |
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self.log.warning("Exiting after keyboard interrupt") |
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if success == TestStatus.FAILED and self.options.pdbonfailure: |
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print("Testcase failed. Attaching python debugger. Enter ? for help") |
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pdb.set_trace() |
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if not self.options.noshutdown: |
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self.log.info("Stopping nodes") |
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if self.nodes: |
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self.stop_nodes() |
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else: |
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self.log.info("Note: bitcoinds were not stopped and may still be running") |
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if not self.options.nocleanup and not self.options.noshutdown and success != TestStatus.FAILED: |
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self.log.info("Cleaning up") |
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shutil.rmtree(self.options.tmpdir) |
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else: |
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self.log.warning("Not cleaning up dir %s" % self.options.tmpdir) |
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if os.getenv("PYTHON_DEBUG", ""): |
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# Dump the end of the debug logs, to aid in debugging rare |
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# travis failures. |
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import glob |
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filenames = [self.options.tmpdir + "/test_framework.log"] |
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filenames += glob.glob(self.options.tmpdir + "/node*/regtest/debug.log") |
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MAX_LINES_TO_PRINT = 1000 |
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for fn in filenames: |
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try: |
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with open(fn, 'r') as f: |
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print("From", fn, ":") |
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print("".join(deque(f, MAX_LINES_TO_PRINT))) |
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except OSError: |
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print("Opening file %s failed." % fn) |
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traceback.print_exc() |
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if success == TestStatus.PASSED: |
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self.log.info("Tests successful") |
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sys.exit(TEST_EXIT_PASSED) |
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elif success == TestStatus.SKIPPED: |
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self.log.info("Test skipped") |
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sys.exit(TEST_EXIT_SKIPPED) |
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else: |
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self.log.error("Test failed. Test logging available at %s/test_framework.log", self.options.tmpdir) |
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logging.shutdown() |
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sys.exit(TEST_EXIT_FAILED) |
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# Methods to override in subclass test scripts. |
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def set_test_params(self): |
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"""Tests must this method to change default values for number of nodes, topology, etc""" |
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raise NotImplementedError |
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def add_options(self, parser): |
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"""Override this method to add command-line options to the test""" |
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pass |
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def setup_chain(self): |
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"""Override this method to customize blockchain setup""" |
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self.log.info("Initializing test directory " + self.options.tmpdir) |
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if self.setup_clean_chain: |
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self._initialize_chain_clean() |
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else: |
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self._initialize_chain() |
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def setup_network(self): |
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"""Override this method to customize test network topology""" |
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self.setup_nodes() |
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# Connect the nodes as a "chain". This allows us |
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# to split the network between nodes 1 and 2 to get |
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# two halves that can work on competing chains. |
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for i in range(self.num_nodes - 1): |
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connect_nodes_bi(self.nodes, i, i + 1) |
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self.sync_all() |
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def setup_nodes(self): |
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"""Override this method to customize test node setup""" |
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extra_args = None |
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if hasattr(self, "extra_args"): |
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extra_args = self.extra_args |
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self.add_nodes(self.num_nodes, extra_args) |
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self.start_nodes() |
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def run_test(self): |
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"""Tests must override this method to define test logic""" |
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raise NotImplementedError |
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# Public helper methods. These can be accessed by the subclass test scripts. |
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def add_nodes(self, num_nodes, extra_args=None, rpchost=None, timewait=None, binary=None): |
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"""Instantiate TestNode objects""" |
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if extra_args is None: |
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extra_args = [[]] * num_nodes |
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if binary is None: |
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binary = [None] * num_nodes |
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assert_equal(len(extra_args), num_nodes) |
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assert_equal(len(binary), num_nodes) |
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for i in range(num_nodes): |
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self.nodes.append(TestNode(i, self.options.tmpdir, extra_args[i], rpchost, timewait=timewait, binary=binary[i], stderr=None, mocktime=self.mocktime, coverage_dir=self.options.coveragedir)) |
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def start_node(self, i, extra_args=None, stderr=None): |
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"""Start a bitcoind""" |
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node = self.nodes[i] |
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node.start(extra_args, stderr) |
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node.wait_for_rpc_connection() |
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if self.options.coveragedir is not None: |
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coverage.write_all_rpc_commands(self.options.coveragedir, node.rpc) |
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def start_nodes(self, extra_args=None): |
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"""Start multiple bitcoinds""" |
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if extra_args is None: |
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extra_args = [None] * self.num_nodes |
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assert_equal(len(extra_args), self.num_nodes) |
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try: |
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for i, node in enumerate(self.nodes): |
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node.start(extra_args[i]) |
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for node in self.nodes: |
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node.wait_for_rpc_connection() |
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except: |
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# If one node failed to start, stop the others |
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self.stop_nodes() |
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raise |
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if self.options.coveragedir is not None: |
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for node in self.nodes: |
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coverage.write_all_rpc_commands(self.options.coveragedir, node.rpc) |
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def stop_node(self, i): |
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"""Stop a bitcoind test node""" |
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self.nodes[i].stop_node() |
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self.nodes[i].wait_until_stopped() |
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def stop_nodes(self): |
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"""Stop multiple bitcoind test nodes""" |
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for node in self.nodes: |
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# Issue RPC to stop nodes |
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node.stop_node() |
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for node in self.nodes: |
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# Wait for nodes to stop |
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node.wait_until_stopped() |
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def restart_node(self, i, extra_args=None): |
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"""Stop and start a test node""" |
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self.stop_node(i) |
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self.start_node(i, extra_args) |
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def assert_start_raises_init_error(self, i, extra_args=None, expected_msg=None): |
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with tempfile.SpooledTemporaryFile(max_size=2**16) as log_stderr: |
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try: |
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self.start_node(i, extra_args, stderr=log_stderr) |
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self.stop_node(i) |
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except Exception as e: |
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assert 'bitcoind exited' in str(e) # node must have shutdown |
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self.nodes[i].running = False |
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self.nodes[i].process = None |
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if expected_msg is not None: |
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log_stderr.seek(0) |
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stderr = log_stderr.read().decode('utf-8') |
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if expected_msg not in stderr: |
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raise AssertionError("Expected error \"" + expected_msg + "\" not found in:\n" + stderr) |
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else: |
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if expected_msg is None: |
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assert_msg = "bitcoind should have exited with an error" |
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else: |
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assert_msg = "bitcoind should have exited with expected error " + expected_msg |
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raise AssertionError(assert_msg) |
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def wait_for_node_exit(self, i, timeout): |
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self.nodes[i].process.wait(timeout) |
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def split_network(self): |
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""" |
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Split the network of four nodes into nodes 0/1 and 2/3. |
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""" |
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disconnect_nodes(self.nodes[1], 2) |
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disconnect_nodes(self.nodes[2], 1) |
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self.sync_all([self.nodes[:2], self.nodes[2:]]) |
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def join_network(self): |
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""" |
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Join the (previously split) network halves together. |
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""" |
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connect_nodes_bi(self.nodes, 1, 2) |
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self.sync_all() |
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def sync_all(self, node_groups=None): |
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if not node_groups: |
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node_groups = [self.nodes] |
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for group in node_groups: |
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sync_blocks(group) |
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sync_mempools(group) |
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def enable_mocktime(self): |
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"""Enable mocktime for the script. |
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mocktime may be needed for scripts that use the cached version of the |
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blockchain. If the cached version of the blockchain is used without |
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mocktime then the mempools will not sync due to IBD. |
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For backwared compatibility of the python scripts with previous |
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versions of the cache, this helper function sets mocktime to Jan 1, |
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2014 + (201 * 10 * 60)""" |
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self.mocktime = 1388534400 + (201 * 10 * 60) |
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def disable_mocktime(self): |
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self.mocktime = 0 |
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# Private helper methods. These should not be accessed by the subclass test scripts. |
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def _start_logging(self): |
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# Add logger and logging handlers |
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self.log = logging.getLogger('TestFramework') |
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self.log.setLevel(logging.DEBUG) |
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# Create file handler to log all messages |
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fh = logging.FileHandler(self.options.tmpdir + '/test_framework.log') |
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fh.setLevel(logging.DEBUG) |
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# Create console handler to log messages to stderr. By default this logs only error messages, but can be configured with --loglevel. |
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ch = logging.StreamHandler(sys.stdout) |
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# User can provide log level as a number or string (eg DEBUG). loglevel was caught as a string, so try to convert it to an int |
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ll = int(self.options.loglevel) if self.options.loglevel.isdigit() else self.options.loglevel.upper() |
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ch.setLevel(ll) |
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# Format logs the same as bitcoind's debug.log with microprecision (so log files can be concatenated and sorted) |
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formatter = logging.Formatter(fmt='%(asctime)s.%(msecs)03d000 %(name)s (%(levelname)s): %(message)s', datefmt='%Y-%m-%d %H:%M:%S') |
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formatter.converter = time.gmtime |
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fh.setFormatter(formatter) |
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ch.setFormatter(formatter) |
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# add the handlers to the logger |
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self.log.addHandler(fh) |
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self.log.addHandler(ch) |
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if self.options.trace_rpc: |
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rpc_logger = logging.getLogger("BitcoinRPC") |
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rpc_logger.setLevel(logging.DEBUG) |
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rpc_handler = logging.StreamHandler(sys.stdout) |
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rpc_handler.setLevel(logging.DEBUG) |
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rpc_logger.addHandler(rpc_handler) |
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def _initialize_chain(self): |
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"""Initialize a pre-mined blockchain for use by the test. |
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Create a cache of a 200-block-long chain (with wallet) for MAX_NODES |
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Afterward, create num_nodes copies from the cache.""" |
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assert self.num_nodes <= MAX_NODES |
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create_cache = False |
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for i in range(MAX_NODES): |
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if not os.path.isdir(os.path.join(self.options.cachedir, 'node' + str(i))): |
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create_cache = True |
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break |
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if create_cache: |
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self.log.debug("Creating data directories from cached datadir") |
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# find and delete old cache directories if any exist |
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for i in range(MAX_NODES): |
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if os.path.isdir(os.path.join(self.options.cachedir, "node" + str(i))): |
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shutil.rmtree(os.path.join(self.options.cachedir, "node" + str(i))) |
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# Create cache directories, run bitcoinds: |
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for i in range(MAX_NODES): |
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datadir = initialize_datadir(self.options.cachedir, i) |
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args = [os.getenv("BITCOIND", "bitcoind"), "-server", "-keypool=1", "-datadir=" + datadir, "-discover=0"] |
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if i > 0: |
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args.append("-connect=127.0.0.1:" + str(p2p_port(0))) |
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self.nodes.append(TestNode(i, self.options.cachedir, extra_args=[], rpchost=None, timewait=None, binary=None, stderr=None, mocktime=self.mocktime, coverage_dir=None)) |
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self.nodes[i].args = args |
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self.start_node(i) |
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# Wait for RPC connections to be ready |
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for node in self.nodes: |
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node.wait_for_rpc_connection() |
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# Create a 200-block-long chain; each of the 4 first nodes |
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# gets 25 mature blocks and 25 immature. |
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# Note: To preserve compatibility with older versions of |
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# initialize_chain, only 4 nodes will generate coins. |
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# |
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# blocks are created with timestamps 10 minutes apart |
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# starting from 2010 minutes in the past |
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self.enable_mocktime() |
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block_time = self.mocktime - (201 * 10 * 60) |
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for i in range(2): |
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for peer in range(4): |
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for j in range(25): |
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set_node_times(self.nodes, block_time) |
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self.nodes[peer].generate(1) |
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block_time += 10 * 60 |
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# Must sync before next peer starts generating blocks |
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sync_blocks(self.nodes) |
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# Shut them down, and clean up cache directories: |
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self.stop_nodes() |
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self.nodes = [] |
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self.disable_mocktime() |
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for i in range(MAX_NODES): |
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os.remove(log_filename(self.options.cachedir, i, "debug.log")) |
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os.remove(log_filename(self.options.cachedir, i, "db.log")) |
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os.remove(log_filename(self.options.cachedir, i, "peers.dat")) |
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os.remove(log_filename(self.options.cachedir, i, "fee_estimates.dat")) |
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for i in range(self.num_nodes): |
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from_dir = os.path.join(self.options.cachedir, "node" + str(i)) |
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to_dir = os.path.join(self.options.tmpdir, "node" + str(i)) |
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shutil.copytree(from_dir, to_dir) |
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initialize_datadir(self.options.tmpdir, i) # Overwrite port/rpcport in bitcoin.conf |
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def _initialize_chain_clean(self): |
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"""Initialize empty blockchain for use by the test. |
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Create an empty blockchain and num_nodes wallets. |
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Useful if a test case wants complete control over initialization.""" |
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for i in range(self.num_nodes): |
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initialize_datadir(self.options.tmpdir, i) |
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class ComparisonTestFramework(BitcoinTestFramework): |
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"""Test framework for doing p2p comparison testing |
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Sets up some bitcoind binaries: |
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- 1 binary: test binary |
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- 2 binaries: 1 test binary, 1 ref binary |
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- n>2 binaries: 1 test binary, n-1 ref binaries""" |
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def set_test_params(self): |
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self.num_nodes = 2 |
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self.setup_clean_chain = True |
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def add_options(self, parser): |
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parser.add_option("--testbinary", dest="testbinary", |
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default=os.getenv("BITCOIND", "bitcoind"), |
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help="bitcoind binary to test") |
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parser.add_option("--refbinary", dest="refbinary", |
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default=os.getenv("BITCOIND", "bitcoind"), |
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help="bitcoind binary to use for reference nodes (if any)") |
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def setup_network(self): |
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extra_args = [['-whitelist=127.0.0.1']] * self.num_nodes |
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if hasattr(self, "extra_args"): |
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extra_args = self.extra_args |
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self.add_nodes(self.num_nodes, extra_args, |
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binary=[self.options.testbinary] + |
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[self.options.refbinary] * (self.num_nodes - 1)) |
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self.start_nodes() |
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class SkipTest(Exception): |
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"""This exception is raised to skip a test""" |
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def __init__(self, message): |
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self.message = message
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