diff options
Diffstat (limited to 'test/functional/test_framework/test_node.py')
| -rwxr-xr-x | test/functional/test_framework/test_node.py | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/test/functional/test_framework/test_node.py b/test/functional/test_framework/test_node.py index c05988c661..ebae3faffc 100755 --- a/test/functional/test_framework/test_node.py +++ b/test/functional/test_framework/test_node.py @@ -115,6 +115,25 @@ class TestNode(): ] return PRIV_KEYS[self.index] + def get_mem_rss_kilobytes(self): + """Get the memory usage (RSS) per `ps`. + + Returns None if `ps` is unavailable. + """ + assert self.running + + try: + return int(subprocess.check_output( + ["ps", "h", "-o", "rss", "{}".format(self.process.pid)], + stderr=subprocess.DEVNULL).split()[-1]) + + # Avoid failing on platforms where ps isn't installed. + # + # We could later use something like `psutils` to work across platforms. + except (FileNotFoundError, subprocess.SubprocessError): + self.log.exception("Unable to get memory usage") + return None + def _node_msg(self, msg: str) -> str: """Return a modified msg that identifies this node by its index as a debugging aid.""" return "[node %d] %s" % (self.index, msg) @@ -197,6 +216,10 @@ class TestNode(): time.sleep(1.0 / poll_per_s) self._raise_assertion_error("Unable to connect to bitcoind") + def generate(self, nblocks, maxtries=1000000): + self.log.debug("TestNode.generate() dispatches `generate` call to `generatetoaddress`") + return self.generatetoaddress(nblocks=nblocks, address=self.get_deterministic_priv_key().address, maxtries=maxtries) + def get_wallet_rpc(self, wallet_name): if self.use_cli: return self.cli("-rpcwallet={}".format(wallet_name)) @@ -205,13 +228,13 @@ class TestNode(): wallet_path = "wallet/{}".format(urllib.parse.quote(wallet_name)) return self.rpc / wallet_path - def stop_node(self, expected_stderr=''): + def stop_node(self, expected_stderr='', wait=0): """Stop the node.""" if not self.running: return self.log.debug("Stopping node") try: - self.stop() + self.stop(wait=wait) except http.client.CannotSendRequest: self.log.exception("Unable to stop node.") @@ -267,6 +290,33 @@ class TestNode(): if re.search(re.escape(expected_msg), log, flags=re.MULTILINE) is None: self._raise_assertion_error('Expected message "{}" does not partially match log:\n\n{}\n\n'.format(expected_msg, print_log)) + @contextlib.contextmanager + def assert_memory_usage_stable(self, *, increase_allowed=0.03): + """Context manager that allows the user to assert that a node's memory usage (RSS) + hasn't increased beyond some threshold percentage. + + Args: + increase_allowed (float): the fractional increase in memory allowed until failure; + e.g. `0.12` for up to 12% increase allowed. + """ + before_memory_usage = self.get_mem_rss_kilobytes() + + yield + + after_memory_usage = self.get_mem_rss_kilobytes() + + if not (before_memory_usage and after_memory_usage): + self.log.warning("Unable to detect memory usage (RSS) - skipping memory check.") + return + + perc_increase_memory_usage = (after_memory_usage / before_memory_usage) - 1 + + if perc_increase_memory_usage > increase_allowed: + self._raise_assertion_error( + "Memory usage increased over threshold of {:.3f}% from {} to {} ({:.3f}%)".format( + increase_allowed * 100, before_memory_usage, after_memory_usage, + perc_increase_memory_usage * 100)) + 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. |