diff options
Diffstat (limited to 'test/functional/test_framework')
| -rwxr-xr-x | test/functional/test_framework/mininode.py | 6 | ||||
| -rwxr-xr-x | test/functional/test_framework/test_framework.py | 17 | ||||
| -rwxr-xr-x | test/functional/test_framework/test_node.py | 119 |
3 files changed, 131 insertions, 11 deletions
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py index ca5734d67d..ac7cc068bd 100755 --- a/test/functional/test_framework/mininode.py +++ b/test/functional/test_framework/mininode.py @@ -118,7 +118,7 @@ class P2PConnection(asyncio.Protocol): # The initial message to send after the connection was made: self.on_connection_send_msg = None self.recvbuf = b"" - self.network = net + self.magic_bytes = MAGIC_BYTES[net] logger.debug('Connecting to Bitcoin Node: %s:%d' % (self.dstaddr, self.dstport)) loop = NetworkThread.network_event_loop @@ -170,7 +170,7 @@ class P2PConnection(asyncio.Protocol): while True: if len(self.recvbuf) < 4: return - if self.recvbuf[:4] != MAGIC_BYTES[self.network]: + if self.recvbuf[:4] != self.magic_bytes: raise ValueError("got garbage %s" % repr(self.recvbuf)) if len(self.recvbuf) < 4 + 12 + 4 + 4: return @@ -232,7 +232,7 @@ class P2PConnection(asyncio.Protocol): """Build a serialized P2P message""" command = message.command data = message.serialize() - tmsg = MAGIC_BYTES[self.network] + tmsg = self.magic_bytes tmsg += command tmsg += b"\x00" * (12 - len(command)) tmsg += struct.pack("<I", len(data)) diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py index 352fa32b5b..8c4c0d7226 100755 --- a/test/functional/test_framework/test_framework.py +++ b/test/functional/test_framework/test_framework.py @@ -128,6 +128,8 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass): help="Attach a python debugger if test fails") parser.add_argument("--usecli", dest="usecli", default=False, action="store_true", help="use bitcoin-cli instead of RPC for all commands") + parser.add_argument("--perf", dest="perf", default=False, action="store_true", + help="profile running nodes with perf for the duration of the test") self.add_options(parser) self.options = parser.parse_args() @@ -139,6 +141,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass): config = configparser.ConfigParser() config.read_file(open(self.options.configfile)) + self.config = config self.options.bitcoind = os.getenv("BITCOIND", default=config["environment"]["BUILDDIR"] + '/src/bitcoind' + config["environment"]["EXEEXT"]) self.options.bitcoincli = os.getenv("BITCOINCLI", default=config["environment"]["BUILDDIR"] + '/src/bitcoin-cli' + config["environment"]["EXEEXT"]) @@ -201,11 +204,20 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass): node.cleanup_on_exit = False self.log.info("Note: bitcoinds were not stopped and may still be running") - if not self.options.nocleanup and not self.options.noshutdown and success != TestStatus.FAILED: + should_clean_up = ( + not self.options.nocleanup and + not self.options.noshutdown and + success != TestStatus.FAILED and + not self.options.perf + ) + if should_clean_up: self.log.info("Cleaning up {} on exit".format(self.options.tmpdir)) cleanup_tree_on_exit = True + elif self.options.perf: + self.log.warning("Not cleaning up dir {} due to perf data".format(self.options.tmpdir)) + cleanup_tree_on_exit = False else: - self.log.warning("Not cleaning up dir %s" % self.options.tmpdir) + self.log.warning("Not cleaning up dir {}".format(self.options.tmpdir)) cleanup_tree_on_exit = False if success == TestStatus.PASSED: @@ -309,6 +321,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass): extra_conf=extra_confs[i], extra_args=extra_args[i], use_cli=self.options.usecli, + start_perf=self.options.perf, )) def start_node(self, i, *args, **kwargs): diff --git a/test/functional/test_framework/test_node.py b/test/functional/test_framework/test_node.py index 031a8824b1..999ea68254 100755 --- a/test/functional/test_framework/test_node.py +++ b/test/functional/test_framework/test_node.py @@ -18,6 +18,8 @@ import tempfile import time import urllib.parse import collections +import shlex +import sys from .authproxy import JSONRPCException from .util import ( @@ -59,7 +61,13 @@ class TestNode(): To make things easier for the test writer, any unrecognised messages will be dispatched to the RPC connection.""" - def __init__(self, i, datadir, *, rpchost, timewait, bitcoind, bitcoin_cli, mocktime, coverage_dir, extra_conf=None, extra_args=None, use_cli=False): + def __init__(self, i, datadir, *, rpchost, timewait, bitcoind, bitcoin_cli, mocktime, coverage_dir, extra_conf=None, extra_args=None, use_cli=False, start_perf=False): + """ + Kwargs: + start_perf (bool): If True, begin profiling the node with `perf` as soon as + the node starts. + """ + self.index = i self.datadir = datadir self.stdout_dir = os.path.join(self.datadir, "stdout") @@ -87,6 +95,7 @@ class TestNode(): self.cli = TestNodeCLI(bitcoin_cli, self.datadir) self.use_cli = use_cli + self.start_perf = start_perf self.running = False self.process = None @@ -95,6 +104,8 @@ class TestNode(): self.url = None self.log = logging.getLogger('TestFramework.node%d' % i) self.cleanup_on_exit = True # Whether to kill the node when this object goes away + # Cache perf subprocesses here by their data output filename. + self.perf_subprocesses = {} self.p2ps = [] @@ -186,6 +197,9 @@ class TestNode(): self.running = True self.log.debug("bitcoind started, waiting for RPC to come up") + if self.start_perf: + self._start_perf() + def wait_for_rpc_connection(self): """Sets up an RPC connection to the bitcoind process. Returns False if unable to connect.""" # Poll at a rate of four times per second @@ -195,12 +209,15 @@ class TestNode(): raise FailedToStartError(self._node_msg( 'bitcoind exited with status {} during initialization'.format(self.process.returncode))) try: - self.rpc = get_rpc_proxy(rpc_url(self.datadir, self.index, self.rpchost), self.index, timeout=self.rpc_timeout, coveragedir=self.coverage_dir) - self.rpc.getblockcount() + rpc = get_rpc_proxy(rpc_url(self.datadir, self.index, self.rpchost), self.index, timeout=self.rpc_timeout, coveragedir=self.coverage_dir) + rpc.getblockcount() # If the call to getblockcount() succeeds then the RPC connection is up + self.log.debug("RPC successfully started") + if self.use_cli: + return + self.rpc = rpc self.rpc_connected = True self.url = self.rpc.url - self.log.debug("RPC successfully started") return except IOError as e: if e.errno != errno.ECONNREFUSED: # Port not yet open? @@ -238,6 +255,10 @@ class TestNode(): except http.client.CannotSendRequest: self.log.exception("Unable to stop node.") + # If there are any running perf processes, stop them. + for profile_name in tuple(self.perf_subprocesses.keys()): + self._stop_perf(profile_name) + # Check that stderr is as expected self.stderr.seek(0) stderr = self.stderr.read().decode('utf-8').strip() @@ -317,6 +338,84 @@ class TestNode(): increase_allowed * 100, before_memory_usage, after_memory_usage, perc_increase_memory_usage * 100)) + @contextlib.contextmanager + def profile_with_perf(self, profile_name): + """ + Context manager that allows easy profiling of node activity using `perf`. + + See `test/functional/README.md` for details on perf usage. + + Args: + profile_name (str): This string will be appended to the + profile data filename generated by perf. + """ + subp = self._start_perf(profile_name) + + yield + + if subp: + self._stop_perf(profile_name) + + def _start_perf(self, profile_name=None): + """Start a perf process to profile this node. + + Returns the subprocess running perf.""" + subp = None + + def test_success(cmd): + return subprocess.call( + # shell=True required for pipe use below + cmd, shell=True, + stderr=subprocess.DEVNULL, stdout=subprocess.DEVNULL) == 0 + + if not sys.platform.startswith('linux'): + self.log.warning("Can't profile with perf; only availabe on Linux platforms") + return None + + if not test_success('which perf'): + self.log.warning("Can't profile with perf; must install perf-tools") + return None + + if not test_success('readelf -S {} | grep .debug_str'.format(shlex.quote(self.binary))): + self.log.warning( + "perf output won't be very useful without debug symbols compiled into bitcoind") + + output_path = tempfile.NamedTemporaryFile( + dir=self.datadir, + prefix="{}.perf.data.".format(profile_name or 'test'), + delete=False, + ).name + + cmd = [ + 'perf', 'record', + '-g', # Record the callgraph. + '--call-graph', 'dwarf', # Compatibility for gcc's --fomit-frame-pointer. + '-F', '101', # Sampling frequency in Hz. + '-p', str(self.process.pid), + '-o', output_path, + ] + subp = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) + self.perf_subprocesses[profile_name] = subp + + return subp + + def _stop_perf(self, profile_name): + """Stop (and pop) a perf subprocess.""" + subp = self.perf_subprocesses.pop(profile_name) + output_path = subp.args[subp.args.index('-o') + 1] + + subp.terminate() + subp.wait(timeout=10) + + stderr = subp.stderr.read().decode() + if 'Consider tweaking /proc/sys/kernel/perf_event_paranoid' in stderr: + self.log.warning( + "perf couldn't collect data! Try " + "'sudo sysctl -w kernel.perf_event_paranoid=-1'") + else: + report_cmd = "perf report -i {}".format(output_path) + self.log.info("See perf output by running '{}'".format(report_cmd)) + def assert_start_raises_init_error(self, extra_args=None, expected_msg=None, match=ErrorMatch.FULL_TEXT, *args, **kwargs): """Attempt to start the node and expect it to raise an error. @@ -402,6 +501,14 @@ class TestNodeCLIAttr: def get_request(self, *args, **kwargs): return lambda: self(*args, **kwargs) +def arg_to_cli(arg): + if isinstance(arg, bool): + return str(arg).lower() + elif isinstance(arg, dict) or isinstance(arg, list): + return json.dumps(arg) + else: + return str(arg) + class TestNodeCLI(): """Interface to bitcoin-cli for an individual node""" @@ -433,8 +540,8 @@ class TestNodeCLI(): def send_cli(self, command=None, *args, **kwargs): """Run bitcoin-cli command. Deserializes returned string as python object.""" - pos_args = [str(arg).lower() if type(arg) is bool else str(arg) for arg in args] - named_args = [str(key) + "=" + str(value) for (key, value) in kwargs.items()] + pos_args = [arg_to_cli(arg) for arg in args] + named_args = [str(key) + "=" + arg_to_cli(value) for (key, value) in kwargs.items()] assert not (pos_args and named_args), "Cannot use positional arguments and named arguments in the same bitcoin-cli call" p_args = [self.binary, "-datadir=" + self.datadir] + self.options if named_args: |