| # Common utilities and Python wrappers for qemu-iotests |
| # |
| # Copyright (C) 2012 IBM Corp. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| # |
| |
| import argparse |
| import atexit |
| import bz2 |
| from collections import OrderedDict |
| import faulthandler |
| import json |
| import logging |
| import os |
| import re |
| import shutil |
| import signal |
| import struct |
| import subprocess |
| import sys |
| import time |
| from typing import (Any, Callable, Dict, Iterable, Iterator, |
| List, Optional, Sequence, TextIO, Tuple, Type, TypeVar) |
| import unittest |
| |
| from contextlib import contextmanager |
| |
| from qemu.machine import qtest |
| from qemu.qmp.legacy import QMPMessage, QMPReturnValue, QEMUMonitorProtocol |
| from qemu.utils import VerboseProcessError |
| |
| # Use this logger for logging messages directly from the iotests module |
| logger = logging.getLogger('qemu.iotests') |
| logger.addHandler(logging.NullHandler()) |
| |
| # Use this logger for messages that ought to be used for diff output. |
| test_logger = logging.getLogger('qemu.iotests.diff_io') |
| |
| |
| faulthandler.enable() |
| |
| # This will not work if arguments contain spaces but is necessary if we |
| # want to support the override options that ./check supports. |
| qemu_img_args = [os.environ.get('QEMU_IMG_PROG', 'qemu-img')] |
| if os.environ.get('QEMU_IMG_OPTIONS'): |
| qemu_img_args += os.environ['QEMU_IMG_OPTIONS'].strip().split(' ') |
| |
| qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')] |
| if os.environ.get('QEMU_IO_OPTIONS'): |
| qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ') |
| |
| qemu_io_args_no_fmt = [os.environ.get('QEMU_IO_PROG', 'qemu-io')] |
| if os.environ.get('QEMU_IO_OPTIONS_NO_FMT'): |
| qemu_io_args_no_fmt += \ |
| os.environ['QEMU_IO_OPTIONS_NO_FMT'].strip().split(' ') |
| |
| qemu_nbd_prog = os.environ.get('QEMU_NBD_PROG', 'qemu-nbd') |
| qemu_nbd_args = [qemu_nbd_prog] |
| if os.environ.get('QEMU_NBD_OPTIONS'): |
| qemu_nbd_args += os.environ['QEMU_NBD_OPTIONS'].strip().split(' ') |
| |
| qemu_prog = os.environ.get('QEMU_PROG', 'qemu') |
| qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ') |
| |
| qsd_prog = os.environ.get('QSD_PROG', 'qemu-storage-daemon') |
| |
| gdb_qemu_env = os.environ.get('GDB_OPTIONS') |
| qemu_gdb = [] |
| if gdb_qemu_env: |
| qemu_gdb = ['gdbserver'] + gdb_qemu_env.strip().split(' ') |
| |
| qemu_print = os.environ.get('PRINT_QEMU', False) |
| |
| imgfmt = os.environ.get('IMGFMT', 'raw') |
| imgproto = os.environ.get('IMGPROTO', 'file') |
| |
| try: |
| test_dir = os.environ['TEST_DIR'] |
| sock_dir = os.environ['SOCK_DIR'] |
| cachemode = os.environ['CACHEMODE'] |
| aiomode = os.environ['AIOMODE'] |
| qemu_default_machine = os.environ['QEMU_DEFAULT_MACHINE'] |
| except KeyError: |
| # We are using these variables as proxies to indicate that we're |
| # not being run via "check". There may be other things set up by |
| # "check" that individual test cases rely on. |
| sys.stderr.write('Please run this test via the "check" script\n') |
| sys.exit(os.EX_USAGE) |
| |
| qemu_valgrind = [] |
| if os.environ.get('VALGRIND_QEMU') == "y" and \ |
| os.environ.get('NO_VALGRIND') != "y": |
| valgrind_logfile = "--log-file=" + test_dir |
| # %p allows to put the valgrind process PID, since |
| # we don't know it a priori (subprocess.Popen is |
| # not yet invoked) |
| valgrind_logfile += "/%p.valgrind" |
| |
| qemu_valgrind = ['valgrind', valgrind_logfile, '--error-exitcode=99'] |
| |
| luks_default_secret_object = 'secret,id=keysec0,data=' + \ |
| os.environ.get('IMGKEYSECRET', '') |
| luks_default_key_secret_opt = 'key-secret=keysec0' |
| |
| sample_img_dir = os.environ['SAMPLE_IMG_DIR'] |
| |
| |
| @contextmanager |
| def change_log_level( |
| logger_name: str, level: int = logging.CRITICAL) -> Iterator[None]: |
| """ |
| Utility function for temporarily changing the log level of a logger. |
| |
| This can be used to silence errors that are expected or uninteresting. |
| """ |
| _logger = logging.getLogger(logger_name) |
| current_level = _logger.level |
| _logger.setLevel(level) |
| |
| try: |
| yield |
| finally: |
| _logger.setLevel(current_level) |
| |
| |
| def unarchive_sample_image(sample, fname): |
| sample_fname = os.path.join(sample_img_dir, sample + '.bz2') |
| with bz2.open(sample_fname) as f_in, open(fname, 'wb') as f_out: |
| shutil.copyfileobj(f_in, f_out) |
| |
| |
| def qemu_tool_popen(args: Sequence[str], |
| connect_stderr: bool = True) -> 'subprocess.Popen[str]': |
| stderr = subprocess.STDOUT if connect_stderr else None |
| # pylint: disable=consider-using-with |
| return subprocess.Popen(args, |
| stdout=subprocess.PIPE, |
| stderr=stderr, |
| universal_newlines=True) |
| |
| |
| def qemu_tool_pipe_and_status(tool: str, args: Sequence[str], |
| connect_stderr: bool = True, |
| drop_successful_output: bool = False) \ |
| -> Tuple[str, int]: |
| """ |
| Run a tool and return both its output and its exit code |
| """ |
| with qemu_tool_popen(args, connect_stderr) as subp: |
| output = subp.communicate()[0] |
| if subp.returncode < 0: |
| cmd = ' '.join(args) |
| sys.stderr.write(f'{tool} received signal \ |
| {-subp.returncode}: {cmd}\n') |
| if drop_successful_output and subp.returncode == 0: |
| output = '' |
| return (output, subp.returncode) |
| |
| def qemu_img_create_prepare_args(args: List[str]) -> List[str]: |
| if not args or args[0] != 'create': |
| return list(args) |
| args = args[1:] |
| |
| p = argparse.ArgumentParser(allow_abbrev=False) |
| # -o option may be specified several times |
| p.add_argument('-o', action='append', default=[]) |
| p.add_argument('-f') |
| parsed, remaining = p.parse_known_args(args) |
| |
| opts_list = parsed.o |
| |
| result = ['create'] |
| if parsed.f is not None: |
| result += ['-f', parsed.f] |
| |
| # IMGOPTS most probably contain options specific for the selected format, |
| # like extended_l2 or compression_type for qcow2. Test may want to create |
| # additional images in other formats that doesn't support these options. |
| # So, use IMGOPTS only for images created in imgfmt format. |
| imgopts = os.environ.get('IMGOPTS') |
| if imgopts and parsed.f == imgfmt: |
| opts_list.insert(0, imgopts) |
| |
| # default luks support |
| if parsed.f == 'luks' and \ |
| all('key-secret' not in opts for opts in opts_list): |
| result += ['--object', luks_default_secret_object] |
| opts_list.append(luks_default_key_secret_opt) |
| |
| for opts in opts_list: |
| result += ['-o', opts] |
| |
| result += remaining |
| |
| return result |
| |
| |
| def qemu_tool(*args: str, check: bool = True, combine_stdio: bool = True |
| ) -> 'subprocess.CompletedProcess[str]': |
| """ |
| Run a qemu tool and return its status code and console output. |
| |
| :param args: full command line to run. |
| :param check: Enforce a return code of zero. |
| :param combine_stdio: set to False to keep stdout/stderr separated. |
| |
| :raise VerboseProcessError: |
| When the return code is negative, or on any non-zero exit code |
| when 'check=True' was provided (the default). This exception has |
| 'stdout', 'stderr', and 'returncode' properties that may be |
| inspected to show greater detail. If this exception is not |
| handled, the command-line, return code, and all console output |
| will be included at the bottom of the stack trace. |
| |
| :return: |
| a CompletedProcess. This object has args, returncode, and stdout |
| properties. If streams are not combined, it will also have a |
| stderr property. |
| """ |
| subp = subprocess.run( |
| args, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT if combine_stdio else subprocess.PIPE, |
| universal_newlines=True, |
| check=False |
| ) |
| |
| if check and subp.returncode or (subp.returncode < 0): |
| raise VerboseProcessError( |
| subp.returncode, args, |
| output=subp.stdout, |
| stderr=subp.stderr, |
| ) |
| |
| return subp |
| |
| |
| def qemu_img(*args: str, check: bool = True, combine_stdio: bool = True |
| ) -> 'subprocess.CompletedProcess[str]': |
| """ |
| Run QEMU_IMG_PROG and return its status code and console output. |
| |
| This function always prepends QEMU_IMG_OPTIONS and may further alter |
| the args for 'create' commands. |
| |
| See `qemu_tool()` for greater detail. |
| """ |
| full_args = qemu_img_args + qemu_img_create_prepare_args(list(args)) |
| return qemu_tool(*full_args, check=check, combine_stdio=combine_stdio) |
| |
| |
| def ordered_qmp(qmsg, conv_keys=True): |
| # Dictionaries are not ordered prior to 3.6, therefore: |
| if isinstance(qmsg, list): |
| return [ordered_qmp(atom) for atom in qmsg] |
| if isinstance(qmsg, dict): |
| od = OrderedDict() |
| for k, v in sorted(qmsg.items()): |
| if conv_keys: |
| k = k.replace('_', '-') |
| od[k] = ordered_qmp(v, conv_keys=False) |
| return od |
| return qmsg |
| |
| def qemu_img_create(*args: str) -> 'subprocess.CompletedProcess[str]': |
| return qemu_img('create', *args) |
| |
| def qemu_img_json(*args: str) -> Any: |
| """ |
| Run qemu-img and return its output as deserialized JSON. |
| |
| :raise CalledProcessError: |
| When qemu-img crashes, or returns a non-zero exit code without |
| producing a valid JSON document to stdout. |
| :raise JSONDecoderError: |
| When qemu-img returns 0, but failed to produce a valid JSON document. |
| |
| :return: A deserialized JSON object; probably a dict[str, Any]. |
| """ |
| try: |
| res = qemu_img(*args, combine_stdio=False) |
| except subprocess.CalledProcessError as exc: |
| # Terminated due to signal. Don't bother. |
| if exc.returncode < 0: |
| raise |
| |
| # Commands like 'check' can return failure (exit codes 2 and 3) |
| # to indicate command completion, but with errors found. For |
| # multi-command flexibility, ignore the exact error codes and |
| # *try* to load JSON. |
| try: |
| return json.loads(exc.stdout) |
| except json.JSONDecodeError: |
| # Nope. This thing is toast. Raise the /process/ error. |
| pass |
| raise |
| |
| return json.loads(res.stdout) |
| |
| def qemu_img_measure(*args: str) -> Any: |
| return qemu_img_json("measure", "--output", "json", *args) |
| |
| def qemu_img_check(*args: str) -> Any: |
| return qemu_img_json("check", "--output", "json", *args) |
| |
| def qemu_img_info(*args: str) -> Any: |
| return qemu_img_json('info', "--output", "json", *args) |
| |
| def qemu_img_map(*args: str) -> Any: |
| return qemu_img_json('map', "--output", "json", *args) |
| |
| def qemu_img_log(*args: str, check: bool = True |
| ) -> 'subprocess.CompletedProcess[str]': |
| result = qemu_img(*args, check=check) |
| log(result.stdout, filters=[filter_testfiles]) |
| return result |
| |
| def img_info_log(filename: str, filter_path: Optional[str] = None, |
| use_image_opts: bool = False, extra_args: Sequence[str] = (), |
| check: bool = True, drop_child_info: bool = True, |
| ) -> None: |
| args = ['info'] |
| if use_image_opts: |
| args.append('--image-opts') |
| else: |
| args += ['-f', imgfmt] |
| args += extra_args |
| args.append(filename) |
| |
| output = qemu_img(*args, check=check).stdout |
| if not filter_path: |
| filter_path = filename |
| log(filter_img_info(output, filter_path, drop_child_info)) |
| |
| def qemu_io_wrap_args(args: Sequence[str]) -> List[str]: |
| if '-f' in args or '--image-opts' in args: |
| return qemu_io_args_no_fmt + list(args) |
| else: |
| return qemu_io_args + list(args) |
| |
| def qemu_io_popen(*args): |
| return qemu_tool_popen(qemu_io_wrap_args(args)) |
| |
| def qemu_io(*args: str, check: bool = True, combine_stdio: bool = True |
| ) -> 'subprocess.CompletedProcess[str]': |
| """ |
| Run QEMU_IO_PROG and return the status code and console output. |
| |
| This function always prepends either QEMU_IO_OPTIONS or |
| QEMU_IO_OPTIONS_NO_FMT. |
| """ |
| return qemu_tool(*qemu_io_wrap_args(args), |
| check=check, combine_stdio=combine_stdio) |
| |
| def qemu_io_log(*args: str, check: bool = True |
| ) -> 'subprocess.CompletedProcess[str]': |
| result = qemu_io(*args, check=check) |
| log(result.stdout, filters=[filter_testfiles, filter_qemu_io]) |
| return result |
| |
| class QemuIoInteractive: |
| def __init__(self, *args): |
| self.args = qemu_io_wrap_args(args) |
| # We need to keep the Popen objext around, and not |
| # close it immediately. Therefore, disable the pylint check: |
| # pylint: disable=consider-using-with |
| self._p = subprocess.Popen(self.args, stdin=subprocess.PIPE, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| universal_newlines=True) |
| out = self._p.stdout.read(9) |
| if out != 'qemu-io> ': |
| # Most probably qemu-io just failed to start. |
| # Let's collect the whole output and exit. |
| out += self._p.stdout.read() |
| self._p.wait(timeout=1) |
| raise ValueError(out) |
| |
| def close(self): |
| self._p.communicate('q\n') |
| |
| def _read_output(self): |
| pattern = 'qemu-io> ' |
| n = len(pattern) |
| pos = 0 |
| s = [] |
| while pos != n: |
| c = self._p.stdout.read(1) |
| # check unexpected EOF |
| assert c != '' |
| s.append(c) |
| if c == pattern[pos]: |
| pos += 1 |
| else: |
| pos = 0 |
| |
| return ''.join(s[:-n]) |
| |
| def cmd(self, cmd): |
| # quit command is in close(), '\n' is added automatically |
| assert '\n' not in cmd |
| cmd = cmd.strip() |
| assert cmd not in ('q', 'quit') |
| self._p.stdin.write(cmd + '\n') |
| self._p.stdin.flush() |
| return self._read_output() |
| |
| |
| class QemuStorageDaemon: |
| _qmp: Optional[QEMUMonitorProtocol] = None |
| _qmpsock: Optional[str] = None |
| # Python < 3.8 would complain if this type were not a string literal |
| # (importing `annotations` from `__future__` would work; but not on <= 3.6) |
| _p: 'Optional[subprocess.Popen[bytes]]' = None |
| |
| def __init__(self, *args: str, instance_id: str = 'a', qmp: bool = False): |
| assert '--pidfile' not in args |
| self.pidfile = os.path.join(test_dir, f'qsd-{instance_id}-pid') |
| all_args = [qsd_prog] + list(args) + ['--pidfile', self.pidfile] |
| |
| if qmp: |
| self._qmpsock = os.path.join(sock_dir, f'qsd-{instance_id}.sock') |
| all_args += ['--chardev', |
| f'socket,id=qmp-sock,path={self._qmpsock}', |
| '--monitor', 'qmp-sock'] |
| |
| self._qmp = QEMUMonitorProtocol(self._qmpsock, server=True) |
| |
| # Cannot use with here, we want the subprocess to stay around |
| # pylint: disable=consider-using-with |
| self._p = subprocess.Popen(all_args) |
| if self._qmp is not None: |
| self._qmp.accept() |
| while not os.path.exists(self.pidfile): |
| if self._p.poll() is not None: |
| cmd = ' '.join(all_args) |
| raise RuntimeError( |
| 'qemu-storage-daemon terminated with exit code ' + |
| f'{self._p.returncode}: {cmd}') |
| |
| time.sleep(0.01) |
| |
| with open(self.pidfile, encoding='utf-8') as f: |
| self._pid = int(f.read().strip()) |
| |
| assert self._pid == self._p.pid |
| |
| def qmp(self, cmd: str, args: Optional[Dict[str, object]] = None) \ |
| -> QMPMessage: |
| assert self._qmp is not None |
| return self._qmp.cmd_raw(cmd, args) |
| |
| def get_qmp(self) -> QEMUMonitorProtocol: |
| assert self._qmp is not None |
| return self._qmp |
| |
| def cmd(self, cmd: str, args: Optional[Dict[str, object]] = None) \ |
| -> QMPReturnValue: |
| assert self._qmp is not None |
| return self._qmp.cmd(cmd, **(args or {})) |
| |
| def stop(self, kill_signal=15): |
| self._p.send_signal(kill_signal) |
| self._p.wait() |
| self._p = None |
| |
| if self._qmp: |
| self._qmp.close() |
| |
| if self._qmpsock is not None: |
| try: |
| os.remove(self._qmpsock) |
| except OSError: |
| pass |
| try: |
| os.remove(self.pidfile) |
| except OSError: |
| pass |
| |
| def __del__(self): |
| if self._p is not None: |
| self.stop(kill_signal=9) |
| |
| |
| def qemu_nbd(*args): |
| '''Run qemu-nbd in daemon mode and return the parent's exit code''' |
| return subprocess.call(qemu_nbd_args + ['--fork'] + list(args)) |
| |
| def qemu_nbd_early_pipe(*args: str) -> Tuple[int, str]: |
| '''Run qemu-nbd in daemon mode and return both the parent's exit code |
| and its output in case of an error''' |
| full_args = qemu_nbd_args + ['--fork'] + list(args) |
| output, returncode = qemu_tool_pipe_and_status('qemu-nbd', full_args, |
| connect_stderr=False) |
| return returncode, output if returncode else '' |
| |
| def qemu_nbd_list_log(*args: str) -> str: |
| '''Run qemu-nbd to list remote exports''' |
| full_args = [qemu_nbd_prog, '-L'] + list(args) |
| output, _ = qemu_tool_pipe_and_status('qemu-nbd', full_args) |
| log(output, filters=[filter_testfiles, filter_nbd_exports]) |
| return output |
| |
| @contextmanager |
| def qemu_nbd_popen(*args): |
| '''Context manager running qemu-nbd within the context''' |
| pid_file = file_path("qemu_nbd_popen-nbd-pid-file") |
| |
| assert not os.path.exists(pid_file) |
| |
| cmd = list(qemu_nbd_args) |
| cmd.extend(('--persistent', '--pid-file', pid_file)) |
| cmd.extend(args) |
| |
| log('Start NBD server') |
| with subprocess.Popen(cmd) as p: |
| try: |
| while not os.path.exists(pid_file): |
| if p.poll() is not None: |
| raise RuntimeError( |
| "qemu-nbd terminated with exit code {}: {}" |
| .format(p.returncode, ' '.join(cmd))) |
| |
| time.sleep(0.01) |
| yield |
| finally: |
| if os.path.exists(pid_file): |
| os.remove(pid_file) |
| log('Kill NBD server') |
| p.kill() |
| p.wait() |
| |
| def compare_images(img1: str, img2: str, |
| fmt1: str = imgfmt, fmt2: str = imgfmt) -> bool: |
| """ |
| Compare two images with QEMU_IMG; return True if they are identical. |
| |
| :raise CalledProcessError: |
| when qemu-img crashes or returns a status code of anything other |
| than 0 (identical) or 1 (different). |
| """ |
| try: |
| qemu_img('compare', '-f', fmt1, '-F', fmt2, img1, img2) |
| return True |
| except subprocess.CalledProcessError as exc: |
| if exc.returncode == 1: |
| return False |
| raise |
| |
| def create_image(name, size): |
| '''Create a fully-allocated raw image with sector markers''' |
| with open(name, 'wb') as file: |
| i = 0 |
| while i < size: |
| sector = struct.pack('>l504xl', i // 512, i // 512) |
| file.write(sector) |
| i = i + 512 |
| |
| def image_size(img: str) -> int: |
| """Return image's virtual size""" |
| value = qemu_img_info('-f', imgfmt, img)['virtual-size'] |
| if not isinstance(value, int): |
| type_name = type(value).__name__ |
| raise TypeError("Expected 'int' for 'virtual-size', " |
| f"got '{value}' of type '{type_name}'") |
| return value |
| |
| def is_str(val): |
| return isinstance(val, str) |
| |
| test_dir_re = re.compile(r"%s" % test_dir) |
| def filter_test_dir(msg): |
| return test_dir_re.sub("TEST_DIR", msg) |
| |
| win32_re = re.compile(r"\r") |
| def filter_win32(msg): |
| return win32_re.sub("", msg) |
| |
| qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* " |
| r"\([0-9\/.inf]* [EPTGMKiBbytes]*\/sec " |
| r"and [0-9\/.inf]* ops\/sec\)") |
| def filter_qemu_io(msg): |
| msg = filter_win32(msg) |
| return qemu_io_re.sub("X ops; XX:XX:XX.X " |
| "(XXX YYY/sec and XXX ops/sec)", msg) |
| |
| chown_re = re.compile(r"chown [0-9]+:[0-9]+") |
| def filter_chown(msg): |
| return chown_re.sub("chown UID:GID", msg) |
| |
| def filter_qmp_event(event): |
| '''Filter a QMP event dict''' |
| event = dict(event) |
| if 'timestamp' in event: |
| event['timestamp']['seconds'] = 'SECS' |
| event['timestamp']['microseconds'] = 'USECS' |
| return event |
| |
| def filter_qmp(qmsg, filter_fn): |
| '''Given a string filter, filter a QMP object's values. |
| filter_fn takes a (key, value) pair.''' |
| # Iterate through either lists or dicts; |
| if isinstance(qmsg, list): |
| items = enumerate(qmsg) |
| elif isinstance(qmsg, dict): |
| items = qmsg.items() |
| else: |
| return filter_fn(None, qmsg) |
| |
| for k, v in items: |
| if isinstance(v, (dict, list)): |
| qmsg[k] = filter_qmp(v, filter_fn) |
| else: |
| qmsg[k] = filter_fn(k, v) |
| return qmsg |
| |
| def filter_testfiles(msg): |
| pref1 = os.path.join(test_dir, "%s-" % (os.getpid())) |
| pref2 = os.path.join(sock_dir, "%s-" % (os.getpid())) |
| return msg.replace(pref1, 'TEST_DIR/PID-').replace(pref2, 'SOCK_DIR/PID-') |
| |
| def filter_qmp_testfiles(qmsg): |
| def _filter(_key, value): |
| if is_str(value): |
| return filter_testfiles(value) |
| return value |
| return filter_qmp(qmsg, _filter) |
| |
| def filter_virtio_scsi(output: str) -> str: |
| return re.sub(r'(virtio-scsi)-(ccw|pci)', r'\1', output) |
| |
| def filter_qmp_virtio_scsi(qmsg): |
| def _filter(_key, value): |
| if is_str(value): |
| return filter_virtio_scsi(value) |
| return value |
| return filter_qmp(qmsg, _filter) |
| |
| def filter_generated_node_ids(msg): |
| return re.sub("#block[0-9]+", "NODE_NAME", msg) |
| |
| def filter_qmp_generated_node_ids(qmsg): |
| def _filter(_key, value): |
| if is_str(value): |
| return filter_generated_node_ids(value) |
| return value |
| return filter_qmp(qmsg, _filter) |
| |
| def filter_img_info(output: str, filename: str, |
| drop_child_info: bool = True) -> str: |
| lines = [] |
| drop_indented = False |
| for line in output.split('\n'): |
| if 'disk size' in line or 'actual-size' in line: |
| continue |
| |
| # Drop child node info |
| if drop_indented: |
| if line.startswith(' '): |
| continue |
| drop_indented = False |
| if drop_child_info and "Child node '/" in line: |
| drop_indented = True |
| continue |
| |
| line = line.replace(filename, 'TEST_IMG') |
| line = filter_testfiles(line) |
| line = line.replace(imgfmt, 'IMGFMT') |
| line = re.sub('iters: [0-9]+', 'iters: XXX', line) |
| line = re.sub('uuid: [-a-f0-9]+', |
| 'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', |
| line) |
| line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line) |
| line = re.sub('(compression type: )(zlib|zstd)', r'\1COMPRESSION_TYPE', |
| line) |
| lines.append(line) |
| return '\n'.join(lines) |
| |
| def filter_imgfmt(msg): |
| return msg.replace(imgfmt, 'IMGFMT') |
| |
| def filter_qmp_imgfmt(qmsg): |
| def _filter(_key, value): |
| if is_str(value): |
| return filter_imgfmt(value) |
| return value |
| return filter_qmp(qmsg, _filter) |
| |
| def filter_nbd_exports(output: str) -> str: |
| return re.sub(r'((min|opt|max) block): [0-9]+', r'\1: XXX', output) |
| |
| |
| Msg = TypeVar('Msg', Dict[str, Any], List[Any], str) |
| |
| def log(msg: Msg, |
| filters: Iterable[Callable[[Msg], Msg]] = (), |
| indent: Optional[int] = None) -> None: |
| """ |
| Logs either a string message or a JSON serializable message (like QMP). |
| If indent is provided, JSON serializable messages are pretty-printed. |
| """ |
| for flt in filters: |
| msg = flt(msg) |
| if isinstance(msg, (dict, list)): |
| # Don't sort if it's already sorted |
| do_sort = not isinstance(msg, OrderedDict) |
| test_logger.info(json.dumps(msg, sort_keys=do_sort, indent=indent)) |
| else: |
| test_logger.info(msg) |
| |
| class Timeout: |
| def __init__(self, seconds, errmsg="Timeout"): |
| self.seconds = seconds |
| self.errmsg = errmsg |
| def __enter__(self): |
| if qemu_gdb or qemu_valgrind: |
| return self |
| signal.signal(signal.SIGALRM, self.timeout) |
| signal.setitimer(signal.ITIMER_REAL, self.seconds) |
| return self |
| def __exit__(self, exc_type, value, traceback): |
| if qemu_gdb or qemu_valgrind: |
| return False |
| signal.setitimer(signal.ITIMER_REAL, 0) |
| return False |
| def timeout(self, signum, frame): |
| raise TimeoutError(self.errmsg) |
| |
| def file_pattern(name): |
| return "{0}-{1}".format(os.getpid(), name) |
| |
| class FilePath: |
| """ |
| Context manager generating multiple file names. The generated files are |
| removed when exiting the context. |
| |
| Example usage: |
| |
| with FilePath('a.img', 'b.img') as (img_a, img_b): |
| # Use img_a and img_b here... |
| |
| # a.img and b.img are automatically removed here. |
| |
| By default images are created in iotests.test_dir. To create sockets use |
| iotests.sock_dir: |
| |
| with FilePath('a.sock', base_dir=iotests.sock_dir) as sock: |
| |
| For convenience, calling with one argument yields a single file instead of |
| a tuple with one item. |
| |
| """ |
| def __init__(self, *names, base_dir=test_dir): |
| self.paths = [os.path.join(base_dir, file_pattern(name)) |
| for name in names] |
| |
| def __enter__(self): |
| if len(self.paths) == 1: |
| return self.paths[0] |
| else: |
| return self.paths |
| |
| def __exit__(self, exc_type, exc_val, exc_tb): |
| for path in self.paths: |
| try: |
| os.remove(path) |
| except OSError: |
| pass |
| return False |
| |
| |
| def try_remove(img): |
| try: |
| os.remove(img) |
| except OSError: |
| pass |
| |
| def file_path_remover(): |
| for path in reversed(file_path_remover.paths): |
| try_remove(path) |
| |
| |
| def file_path(*names, base_dir=test_dir): |
| ''' Another way to get auto-generated filename that cleans itself up. |
| |
| Use is as simple as: |
| |
| img_a, img_b = file_path('a.img', 'b.img') |
| sock = file_path('socket') |
| ''' |
| |
| if not hasattr(file_path_remover, 'paths'): |
| file_path_remover.paths = [] |
| atexit.register(file_path_remover) |
| |
| paths = [] |
| for name in names: |
| filename = file_pattern(name) |
| path = os.path.join(base_dir, filename) |
| file_path_remover.paths.append(path) |
| paths.append(path) |
| |
| return paths[0] if len(paths) == 1 else paths |
| |
| def remote_filename(path): |
| if imgproto == 'file': |
| return path |
| elif imgproto == 'ssh': |
| return "ssh://%s@127.0.0.1:22%s" % (os.environ.get('USER'), path) |
| else: |
| raise ValueError("Protocol %s not supported" % (imgproto)) |
| |
| class VM(qtest.QEMUQtestMachine): |
| '''A QEMU VM''' |
| |
| def __init__(self, path_suffix=''): |
| name = "qemu%s-%d" % (path_suffix, os.getpid()) |
| timer = 15.0 if not (qemu_gdb or qemu_valgrind) else None |
| if qemu_gdb and qemu_valgrind: |
| sys.stderr.write('gdb and valgrind are mutually exclusive\n') |
| sys.exit(1) |
| wrapper = qemu_gdb if qemu_gdb else qemu_valgrind |
| super().__init__(qemu_prog, qemu_opts, wrapper=wrapper, |
| name=name, |
| base_temp_dir=test_dir, |
| qmp_timer=timer) |
| self._num_drives = 0 |
| |
| def _post_shutdown(self) -> None: |
| super()._post_shutdown() |
| if not qemu_valgrind or not self._popen: |
| return |
| valgrind_filename = f"{test_dir}/{self._popen.pid}.valgrind" |
| if self.exitcode() == 99: |
| with open(valgrind_filename, encoding='utf-8') as f: |
| print(f.read()) |
| else: |
| os.remove(valgrind_filename) |
| |
| def _pre_launch(self) -> None: |
| super()._pre_launch() |
| if qemu_print: |
| # set QEMU binary output to stdout |
| self._close_qemu_log_file() |
| |
| def add_object(self, opts): |
| self._args.append('-object') |
| self._args.append(opts) |
| return self |
| |
| def add_device(self, opts): |
| self._args.append('-device') |
| self._args.append(opts) |
| return self |
| |
| def add_drive_raw(self, opts): |
| self._args.append('-drive') |
| self._args.append(opts) |
| return self |
| |
| def add_drive(self, path, opts='', interface='virtio', img_format=imgfmt): |
| '''Add a virtio-blk drive to the VM''' |
| options = ['if=%s' % interface, |
| 'id=drive%d' % self._num_drives] |
| |
| if path is not None: |
| options.append('file=%s' % path) |
| options.append('format=%s' % img_format) |
| options.append('cache=%s' % cachemode) |
| options.append('aio=%s' % aiomode) |
| |
| if opts: |
| options.append(opts) |
| |
| if img_format == 'luks' and 'key-secret' not in opts: |
| # default luks support |
| if luks_default_secret_object not in self._args: |
| self.add_object(luks_default_secret_object) |
| |
| options.append(luks_default_key_secret_opt) |
| |
| self._args.append('-drive') |
| self._args.append(','.join(options)) |
| self._num_drives += 1 |
| return self |
| |
| def add_blockdev(self, opts): |
| self._args.append('-blockdev') |
| if isinstance(opts, str): |
| self._args.append(opts) |
| else: |
| self._args.append(','.join(opts)) |
| return self |
| |
| def add_incoming(self, addr): |
| self._args.append('-incoming') |
| self._args.append(addr) |
| return self |
| |
| def hmp(self, command_line: str, use_log: bool = False) -> QMPMessage: |
| cmd = 'human-monitor-command' |
| kwargs: Dict[str, Any] = {'command-line': command_line} |
| if use_log: |
| return self.qmp_log(cmd, **kwargs) |
| else: |
| return self.qmp(cmd, **kwargs) |
| |
| def pause_drive(self, drive: str, event: Optional[str] = None) -> None: |
| """Pause drive r/w operations""" |
| if not event: |
| self.pause_drive(drive, "read_aio") |
| self.pause_drive(drive, "write_aio") |
| return |
| self.hmp(f'qemu-io {drive} "break {event} bp_{drive}"') |
| |
| def resume_drive(self, drive: str) -> None: |
| """Resume drive r/w operations""" |
| self.hmp(f'qemu-io {drive} "remove_break bp_{drive}"') |
| |
| def hmp_qemu_io(self, drive: str, cmd: str, |
| use_log: bool = False, qdev: bool = False) -> QMPMessage: |
| """Write to a given drive using an HMP command""" |
| d = '-d ' if qdev else '' |
| return self.hmp(f'qemu-io {d}{drive} "{cmd}"', use_log=use_log) |
| |
| def flatten_qmp_object(self, obj, output=None, basestr=''): |
| if output is None: |
| output = {} |
| if isinstance(obj, list): |
| for i, item in enumerate(obj): |
| self.flatten_qmp_object(item, output, basestr + str(i) + '.') |
| elif isinstance(obj, dict): |
| for key in obj: |
| self.flatten_qmp_object(obj[key], output, basestr + key + '.') |
| else: |
| output[basestr[:-1]] = obj # Strip trailing '.' |
| return output |
| |
| def qmp_to_opts(self, obj): |
| obj = self.flatten_qmp_object(obj) |
| output_list = [] |
| for key in obj: |
| output_list += [key + '=' + obj[key]] |
| return ','.join(output_list) |
| |
| def get_qmp_events_filtered(self, wait=60.0): |
| result = [] |
| for ev in self.get_qmp_events(wait=wait): |
| result.append(filter_qmp_event(ev)) |
| return result |
| |
| def qmp_log(self, cmd, filters=(), indent=None, **kwargs): |
| full_cmd = OrderedDict(( |
| ("execute", cmd), |
| ("arguments", ordered_qmp(kwargs)) |
| )) |
| log(full_cmd, filters, indent=indent) |
| result = self.qmp(cmd, **kwargs) |
| log(result, filters, indent=indent) |
| return result |
| |
| # Returns None on success, and an error string on failure |
| def run_job(self, job: str, auto_finalize: bool = True, |
| auto_dismiss: bool = False, |
| pre_finalize: Optional[Callable[[], None]] = None, |
| cancel: bool = False, wait: float = 60.0, |
| filters: Iterable[Callable[[Any], Any]] = (), |
| ) -> Optional[str]: |
| """ |
| run_job moves a job from creation through to dismissal. |
| |
| :param job: String. ID of recently-launched job |
| :param auto_finalize: Bool. True if the job was launched with |
| auto_finalize. Defaults to True. |
| :param auto_dismiss: Bool. True if the job was launched with |
| auto_dismiss=True. Defaults to False. |
| :param pre_finalize: Callback. A callable that takes no arguments to be |
| invoked prior to issuing job-finalize, if any. |
| :param cancel: Bool. When true, cancels the job after the pre_finalize |
| callback. |
| :param wait: Float. Timeout value specifying how long to wait for any |
| event, in seconds. Defaults to 60.0. |
| """ |
| match_device = {'data': {'device': job}} |
| match_id = {'data': {'id': job}} |
| events = [ |
| ('BLOCK_JOB_COMPLETED', match_device), |
| ('BLOCK_JOB_CANCELLED', match_device), |
| ('BLOCK_JOB_ERROR', match_device), |
| ('BLOCK_JOB_READY', match_device), |
| ('BLOCK_JOB_PENDING', match_id), |
| ('JOB_STATUS_CHANGE', match_id) |
| ] |
| error = None |
| while True: |
| ev = filter_qmp_event(self.events_wait(events, timeout=wait)) |
| if ev['event'] != 'JOB_STATUS_CHANGE': |
| log(ev, filters=filters) |
| continue |
| status = ev['data']['status'] |
| if status == 'aborting': |
| result = self.qmp('query-jobs') |
| for j in result['return']: |
| if j['id'] == job: |
| error = j['error'] |
| log('Job failed: %s' % (j['error']), filters=filters) |
| elif status == 'ready': |
| self.qmp_log('job-complete', id=job, filters=filters) |
| elif status == 'pending' and not auto_finalize: |
| if pre_finalize: |
| pre_finalize() |
| if cancel: |
| self.qmp_log('job-cancel', id=job, filters=filters) |
| else: |
| self.qmp_log('job-finalize', id=job, filters=filters) |
| elif status == 'concluded' and not auto_dismiss: |
| self.qmp_log('job-dismiss', id=job, filters=filters) |
| elif status == 'null': |
| return error |
| |
| # Returns None on success, and an error string on failure |
| def blockdev_create(self, options, job_id='job0', filters=None): |
| if filters is None: |
| filters = [filter_qmp_testfiles] |
| result = self.qmp_log('blockdev-create', filters=filters, |
| job_id=job_id, options=options) |
| |
| if 'return' in result: |
| assert result['return'] == {} |
| job_result = self.run_job(job_id, filters=filters) |
| else: |
| job_result = result['error'] |
| |
| log("") |
| return job_result |
| |
| def enable_migration_events(self, name): |
| log('Enabling migration QMP events on %s...' % name) |
| log(self.qmp('migrate-set-capabilities', capabilities=[ |
| { |
| 'capability': 'events', |
| 'state': True |
| } |
| ])) |
| |
| def wait_migration(self, expect_runstate: Optional[str]) -> bool: |
| while True: |
| event = self.event_wait('MIGRATION') |
| # We use the default timeout, and with a timeout, event_wait() |
| # never returns None |
| assert event |
| |
| log(event, filters=[filter_qmp_event]) |
| if event['data']['status'] in ('completed', 'failed'): |
| break |
| |
| if event['data']['status'] == 'completed': |
| # The event may occur in finish-migrate, so wait for the expected |
| # post-migration runstate |
| runstate = None |
| while runstate != expect_runstate: |
| runstate = self.qmp('query-status')['return']['status'] |
| return True |
| else: |
| return False |
| |
| def node_info(self, node_name): |
| nodes = self.qmp('query-named-block-nodes') |
| for x in nodes['return']: |
| if x['node-name'] == node_name: |
| return x |
| return None |
| |
| def query_bitmaps(self): |
| res = self.qmp("query-named-block-nodes") |
| return {device['node-name']: device['dirty-bitmaps'] |
| for device in res['return'] if 'dirty-bitmaps' in device} |
| |
| def get_bitmap(self, node_name, bitmap_name, recording=None, bitmaps=None): |
| """ |
| get a specific bitmap from the object returned by query_bitmaps. |
| :param recording: If specified, filter results by the specified value. |
| :param bitmaps: If specified, use it instead of call query_bitmaps() |
| """ |
| if bitmaps is None: |
| bitmaps = self.query_bitmaps() |
| |
| for bitmap in bitmaps[node_name]: |
| if bitmap.get('name', '') == bitmap_name: |
| if recording is None or bitmap.get('recording') == recording: |
| return bitmap |
| return None |
| |
| def check_bitmap_status(self, node_name, bitmap_name, fields): |
| ret = self.get_bitmap(node_name, bitmap_name) |
| |
| return fields.items() <= ret.items() |
| |
| def assert_block_path(self, root, path, expected_node, graph=None): |
| """ |
| Check whether the node under the given path in the block graph |
| is @expected_node. |
| |
| @root is the node name of the node where the @path is rooted. |
| |
| @path is a string that consists of child names separated by |
| slashes. It must begin with a slash. |
| |
| Examples for @root + @path: |
| - root="qcow2-node", path="/backing/file" |
| - root="quorum-node", path="/children.2/file" |
| |
| Hypothetically, @path could be empty, in which case it would |
| point to @root. However, in practice this case is not useful |
| and hence not allowed. |
| |
| @expected_node may be None. (All elements of the path but the |
| leaf must still exist.) |
| |
| @graph may be None or the result of an x-debug-query-block-graph |
| call that has already been performed. |
| """ |
| if graph is None: |
| graph = self.qmp('x-debug-query-block-graph')['return'] |
| |
| iter_path = iter(path.split('/')) |
| |
| # Must start with a / |
| assert next(iter_path) == '' |
| |
| node = next((node for node in graph['nodes'] if node['name'] == root), |
| None) |
| |
| # An empty @path is not allowed, so the root node must be present |
| assert node is not None, 'Root node %s not found' % root |
| |
| for child_name in iter_path: |
| assert node is not None, 'Cannot follow path %s%s' % (root, path) |
| |
| try: |
| node_id = next(edge['child'] for edge in graph['edges'] |
| if (edge['parent'] == node['id'] and |
| edge['name'] == child_name)) |
| |
| node = next(node for node in graph['nodes'] |
| if node['id'] == node_id) |
| |
| except StopIteration: |
| node = None |
| |
| if node is None: |
| assert expected_node is None, \ |
| 'No node found under %s (but expected %s)' % \ |
| (path, expected_node) |
| else: |
| assert node['name'] == expected_node, \ |
| 'Found node %s under %s (but expected %s)' % \ |
| (node['name'], path, expected_node) |
| |
| index_re = re.compile(r'([^\[]+)\[([^\]]+)\]') |
| |
| class QMPTestCase(unittest.TestCase): |
| '''Abstract base class for QMP test cases''' |
| |
| def __init__(self, *args, **kwargs): |
| super().__init__(*args, **kwargs) |
| # Many users of this class set a VM property we rely on heavily |
| # in the methods below. |
| self.vm = None |
| |
| def dictpath(self, d, path): |
| '''Traverse a path in a nested dict''' |
| for component in path.split('/'): |
| m = index_re.match(component) |
| if m: |
| component, idx = m.groups() |
| idx = int(idx) |
| |
| if not isinstance(d, dict) or component not in d: |
| self.fail(f'failed path traversal for "{path}" in "{d}"') |
| d = d[component] |
| |
| if m: |
| if not isinstance(d, list): |
| self.fail(f'path component "{component}" in "{path}" ' |
| f'is not a list in "{d}"') |
| try: |
| d = d[idx] |
| except IndexError: |
| self.fail(f'invalid index "{idx}" in path "{path}" ' |
| f'in "{d}"') |
| return d |
| |
| def assert_qmp_absent(self, d, path): |
| try: |
| result = self.dictpath(d, path) |
| except AssertionError: |
| return |
| self.fail('path "%s" has value "%s"' % (path, str(result))) |
| |
| def assert_qmp(self, d, path, value): |
| '''Assert that the value for a specific path in a QMP dict |
| matches. When given a list of values, assert that any of |
| them matches.''' |
| |
| result = self.dictpath(d, path) |
| |
| # [] makes no sense as a list of valid values, so treat it as |
| # an actual single value. |
| if isinstance(value, list) and value != []: |
| for v in value: |
| if result == v: |
| return |
| self.fail('no match for "%s" in %s' % (str(result), str(value))) |
| else: |
| self.assertEqual(result, value, |
| '"%s" is "%s", expected "%s"' |
| % (path, str(result), str(value))) |
| |
| def assert_no_active_block_jobs(self): |
| result = self.vm.qmp('query-block-jobs') |
| self.assert_qmp(result, 'return', []) |
| |
| def assert_has_block_node(self, node_name=None, file_name=None): |
| """Issue a query-named-block-nodes and assert node_name and/or |
| file_name is present in the result""" |
| def check_equal_or_none(a, b): |
| return a is None or b is None or a == b |
| assert node_name or file_name |
| result = self.vm.qmp('query-named-block-nodes') |
| for x in result["return"]: |
| if check_equal_or_none(x.get("node-name"), node_name) and \ |
| check_equal_or_none(x.get("file"), file_name): |
| return |
| self.fail("Cannot find %s %s in result:\n%s" % |
| (node_name, file_name, result)) |
| |
| def assert_json_filename_equal(self, json_filename, reference): |
| '''Asserts that the given filename is a json: filename and that its |
| content is equal to the given reference object''' |
| self.assertEqual(json_filename[:5], 'json:') |
| self.assertEqual( |
| self.vm.flatten_qmp_object(json.loads(json_filename[5:])), |
| self.vm.flatten_qmp_object(reference) |
| ) |
| |
| def cancel_and_wait(self, drive='drive0', force=False, |
| resume=False, wait=60.0): |
| '''Cancel a block job and wait for it to finish, returning the event''' |
| self.vm.cmd('block-job-cancel', device=drive, force=force) |
| |
| if resume: |
| self.vm.resume_drive(drive) |
| |
| cancelled = False |
| result = None |
| while not cancelled: |
| for event in self.vm.get_qmp_events(wait=wait): |
| if event['event'] == 'BLOCK_JOB_COMPLETED' or \ |
| event['event'] == 'BLOCK_JOB_CANCELLED': |
| self.assert_qmp(event, 'data/device', drive) |
| result = event |
| cancelled = True |
| elif event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', drive) |
| |
| |
| self.assert_no_active_block_jobs() |
| return result |
| |
| def wait_until_completed(self, drive='drive0', check_offset=True, |
| wait=60.0, error=None): |
| '''Wait for a block job to finish, returning the event''' |
| while True: |
| for event in self.vm.get_qmp_events(wait=wait): |
| if event['event'] == 'BLOCK_JOB_COMPLETED': |
| self.assert_qmp(event, 'data/device', drive) |
| if error is None: |
| self.assert_qmp_absent(event, 'data/error') |
| if check_offset: |
| self.assert_qmp(event, 'data/offset', |
| event['data']['len']) |
| else: |
| self.assert_qmp(event, 'data/error', error) |
| self.assert_no_active_block_jobs() |
| return event |
| if event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', drive) |
| |
| def wait_ready(self, drive='drive0'): |
| """Wait until a BLOCK_JOB_READY event, and return the event.""" |
| return self.vm.events_wait([ |
| ('BLOCK_JOB_READY', |
| {'data': {'type': 'mirror', 'device': drive}}), |
| ('BLOCK_JOB_READY', |
| {'data': {'type': 'commit', 'device': drive}}) |
| ]) |
| |
| def wait_ready_and_cancel(self, drive='drive0'): |
| self.wait_ready(drive=drive) |
| event = self.cancel_and_wait(drive=drive) |
| self.assertEqual(event['event'], 'BLOCK_JOB_COMPLETED') |
| self.assert_qmp(event, 'data/type', 'mirror') |
| self.assert_qmp(event, 'data/offset', event['data']['len']) |
| |
| def complete_and_wait(self, drive='drive0', wait_ready=True, |
| completion_error=None): |
| '''Complete a block job and wait for it to finish''' |
| if wait_ready: |
| self.wait_ready(drive=drive) |
| |
| self.vm.cmd('block-job-complete', device=drive) |
| |
| event = self.wait_until_completed(drive=drive, error=completion_error) |
| self.assertTrue(event['data']['type'] in ['mirror', 'commit']) |
| |
| def pause_wait(self, job_id='job0'): |
| with Timeout(3, "Timeout waiting for job to pause"): |
| while True: |
| result = self.vm.qmp('query-block-jobs') |
| found = False |
| for job in result['return']: |
| if job['device'] == job_id: |
| found = True |
| if job['paused'] and not job['busy']: |
| return job |
| break |
| assert found |
| |
| def pause_job(self, job_id='job0', wait=True): |
| self.vm.cmd('block-job-pause', device=job_id) |
| if wait: |
| self.pause_wait(job_id) |
| |
| def case_skip(self, reason): |
| '''Skip this test case''' |
| case_notrun(reason) |
| self.skipTest(reason) |
| |
| |
| def notrun(reason): |
| '''Skip this test suite''' |
| # Each test in qemu-iotests has a number ("seq") |
| seq = os.path.basename(sys.argv[0]) |
| |
| with open('%s/%s.notrun' % (test_dir, seq), 'w', encoding='utf-8') \ |
| as outfile: |
| outfile.write(reason + '\n') |
| logger.warning("%s not run: %s", seq, reason) |
| sys.exit(0) |
| |
| def case_notrun(reason): |
| '''Mark this test case as not having been run (without actually |
| skipping it, that is left to the caller). See |
| QMPTestCase.case_skip() for a variant that actually skips the |
| current test case.''' |
| |
| # Each test in qemu-iotests has a number ("seq") |
| seq = os.path.basename(sys.argv[0]) |
| |
| with open('%s/%s.casenotrun' % (test_dir, seq), 'a', encoding='utf-8') \ |
| as outfile: |
| outfile.write(' [case not run] ' + reason + '\n') |
| |
| def _verify_image_format(supported_fmts: Sequence[str] = (), |
| unsupported_fmts: Sequence[str] = ()) -> None: |
| if 'generic' in supported_fmts and \ |
| os.environ.get('IMGFMT_GENERIC', 'true') == 'true': |
| # similar to |
| # _supported_fmt generic |
| # for bash tests |
| supported_fmts = () |
| |
| not_sup = supported_fmts and (imgfmt not in supported_fmts) |
| if not_sup or (imgfmt in unsupported_fmts): |
| notrun('not suitable for this image format: %s' % imgfmt) |
| |
| if imgfmt == 'luks': |
| verify_working_luks() |
| |
| def _verify_protocol(supported: Sequence[str] = (), |
| unsupported: Sequence[str] = ()) -> None: |
| assert not (supported and unsupported) |
| |
| if 'generic' in supported: |
| return |
| |
| not_sup = supported and (imgproto not in supported) |
| if not_sup or (imgproto in unsupported): |
| notrun('not suitable for this protocol: %s' % imgproto) |
| |
| def _verify_platform(supported: Sequence[str] = (), |
| unsupported: Sequence[str] = ()) -> None: |
| if any((sys.platform.startswith(x) for x in unsupported)): |
| notrun('not suitable for this OS: %s' % sys.platform) |
| |
| if supported: |
| if not any((sys.platform.startswith(x) for x in supported)): |
| notrun('not suitable for this OS: %s' % sys.platform) |
| |
| def _verify_cache_mode(supported_cache_modes: Sequence[str] = ()) -> None: |
| if supported_cache_modes and (cachemode not in supported_cache_modes): |
| notrun('not suitable for this cache mode: %s' % cachemode) |
| |
| def _verify_aio_mode(supported_aio_modes: Sequence[str] = ()) -> None: |
| if supported_aio_modes and (aiomode not in supported_aio_modes): |
| notrun('not suitable for this aio mode: %s' % aiomode) |
| |
| def _verify_formats(required_formats: Sequence[str] = ()) -> None: |
| usf_list = list(set(required_formats) - set(supported_formats())) |
| if usf_list: |
| notrun(f'formats {usf_list} are not whitelisted') |
| |
| |
| def _verify_virtio_blk() -> None: |
| out = qemu_pipe('-M', 'none', '-device', 'help') |
| if 'virtio-blk' not in out: |
| notrun('Missing virtio-blk in QEMU binary') |
| |
| def verify_virtio_scsi_pci_or_ccw() -> None: |
| out = qemu_pipe('-M', 'none', '-device', 'help') |
| if 'virtio-scsi-pci' not in out and 'virtio-scsi-ccw' not in out: |
| notrun('Missing virtio-scsi-pci or virtio-scsi-ccw in QEMU binary') |
| |
| |
| def _verify_imgopts(unsupported: Sequence[str] = ()) -> None: |
| imgopts = os.environ.get('IMGOPTS') |
| # One of usage examples for IMGOPTS is "data_file=$TEST_IMG.ext_data_file" |
| # but it supported only for bash tests. We don't have a concept of global |
| # TEST_IMG in iotests.py, not saying about somehow parsing $variables. |
| # So, for simplicity let's just not support any IMGOPTS with '$' inside. |
| unsup = list(unsupported) + ['$'] |
| if imgopts and any(x in imgopts for x in unsup): |
| notrun(f'not suitable for this imgopts: {imgopts}') |
| |
| |
| def supports_quorum() -> bool: |
| return 'quorum' in qemu_img('--help').stdout |
| |
| def verify_quorum(): |
| '''Skip test suite if quorum support is not available''' |
| if not supports_quorum(): |
| notrun('quorum support missing') |
| |
| def has_working_luks() -> Tuple[bool, str]: |
| """ |
| Check whether our LUKS driver can actually create images |
| (this extends to LUKS encryption for qcow2). |
| |
| If not, return the reason why. |
| """ |
| |
| img_file = f'{test_dir}/luks-test.luks' |
| res = qemu_img('create', '-f', 'luks', |
| '--object', luks_default_secret_object, |
| '-o', luks_default_key_secret_opt, |
| '-o', 'iter-time=10', |
| img_file, '1G', |
| check=False) |
| try: |
| os.remove(img_file) |
| except OSError: |
| pass |
| |
| if res.returncode: |
| reason = res.stdout |
| for line in res.stdout.splitlines(): |
| if img_file + ':' in line: |
| reason = line.split(img_file + ':', 1)[1].strip() |
| break |
| |
| return (False, reason) |
| else: |
| return (True, '') |
| |
| def verify_working_luks(): |
| """ |
| Skip test suite if LUKS does not work |
| """ |
| (working, reason) = has_working_luks() |
| if not working: |
| notrun(reason) |
| |
| def supports_qcow2_zstd_compression() -> bool: |
| img_file = f'{test_dir}/qcow2-zstd-test.qcow2' |
| res = qemu_img('create', '-f', 'qcow2', '-o', 'compression_type=zstd', |
| img_file, '0', |
| check=False) |
| try: |
| os.remove(img_file) |
| except OSError: |
| pass |
| |
| if res.returncode == 1 and \ |
| "'compression-type' does not accept value 'zstd'" in res.stdout: |
| return False |
| else: |
| return True |
| |
| def verify_qcow2_zstd_compression(): |
| if not supports_qcow2_zstd_compression(): |
| notrun('zstd compression not supported') |
| |
| def qemu_pipe(*args: str) -> str: |
| """ |
| Run qemu with an option to print something and exit (e.g. a help option). |
| |
| :return: QEMU's stdout output. |
| """ |
| full_args = [qemu_prog] + qemu_opts + list(args) |
| output, _ = qemu_tool_pipe_and_status('qemu', full_args) |
| return output |
| |
| def supported_formats(read_only=False): |
| '''Set 'read_only' to True to check ro-whitelist |
| Otherwise, rw-whitelist is checked''' |
| |
| if not hasattr(supported_formats, "formats"): |
| supported_formats.formats = {} |
| |
| if read_only not in supported_formats.formats: |
| format_message = qemu_pipe("-drive", "format=help") |
| line = 1 if read_only else 0 |
| supported_formats.formats[read_only] = \ |
| format_message.splitlines()[line].split(":")[1].split() |
| |
| return supported_formats.formats[read_only] |
| |
| def skip_if_unsupported(required_formats=(), read_only=False): |
| '''Skip Test Decorator |
| Runs the test if all the required formats are whitelisted''' |
| def skip_test_decorator(func): |
| def func_wrapper(test_case: QMPTestCase, *args: List[Any], |
| **kwargs: Dict[str, Any]) -> None: |
| if callable(required_formats): |
| fmts = required_formats(test_case) |
| else: |
| fmts = required_formats |
| |
| usf_list = list(set(fmts) - set(supported_formats(read_only))) |
| if usf_list: |
| msg = f'{test_case}: formats {usf_list} are not whitelisted' |
| test_case.case_skip(msg) |
| else: |
| func(test_case, *args, **kwargs) |
| return func_wrapper |
| return skip_test_decorator |
| |
| def skip_for_formats(formats: Sequence[str] = ()) \ |
| -> Callable[[Callable[[QMPTestCase, List[Any], Dict[str, Any]], None]], |
| Callable[[QMPTestCase, List[Any], Dict[str, Any]], None]]: |
| '''Skip Test Decorator |
| Skips the test for the given formats''' |
| def skip_test_decorator(func): |
| def func_wrapper(test_case: QMPTestCase, *args: List[Any], |
| **kwargs: Dict[str, Any]) -> None: |
| if imgfmt in formats: |
| msg = f'{test_case}: Skipped for format {imgfmt}' |
| test_case.case_skip(msg) |
| else: |
| func(test_case, *args, **kwargs) |
| return func_wrapper |
| return skip_test_decorator |
| |
| def skip_if_user_is_root(func): |
| '''Skip Test Decorator |
| Runs the test only without root permissions''' |
| def func_wrapper(*args, **kwargs): |
| if os.getuid() == 0: |
| case_notrun('{}: cannot be run as root'.format(args[0])) |
| return None |
| else: |
| return func(*args, **kwargs) |
| return func_wrapper |
| |
| # We need to filter out the time taken from the output so that |
| # qemu-iotest can reliably diff the results against master output, |
| # and hide skipped tests from the reference output. |
| |
| class ReproducibleTestResult(unittest.TextTestResult): |
| def addSkip(self, test, reason): |
| # Same as TextTestResult, but print dot instead of "s" |
| unittest.TestResult.addSkip(self, test, reason) |
| if self.showAll: |
| self.stream.writeln("skipped {0!r}".format(reason)) |
| elif self.dots: |
| self.stream.write(".") |
| self.stream.flush() |
| |
| class ReproducibleStreamWrapper: |
| def __init__(self, stream: TextIO): |
| self.stream = stream |
| |
| def __getattr__(self, attr): |
| if attr in ('stream', '__getstate__'): |
| raise AttributeError(attr) |
| return getattr(self.stream, attr) |
| |
| def write(self, arg=None): |
| arg = re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', arg) |
| arg = re.sub(r' \(skipped=\d+\)', r'', arg) |
| self.stream.write(arg) |
| |
| class ReproducibleTestRunner(unittest.TextTestRunner): |
| def __init__(self, stream: Optional[TextIO] = None, |
| resultclass: Type[unittest.TestResult] = |
| ReproducibleTestResult, |
| **kwargs: Any) -> None: |
| rstream = ReproducibleStreamWrapper(stream or sys.stdout) |
| super().__init__(stream=rstream, # type: ignore |
| descriptions=True, |
| resultclass=resultclass, |
| **kwargs) |
| |
| def execute_unittest(argv: List[str], debug: bool = False) -> None: |
| """Executes unittests within the calling module.""" |
| |
| # Some tests have warnings, especially ResourceWarnings for unclosed |
| # files and sockets. Ignore them for now to ensure reproducibility of |
| # the test output. |
| unittest.main(argv=argv, |
| testRunner=ReproducibleTestRunner, |
| verbosity=2 if debug else 1, |
| warnings=None if sys.warnoptions else 'ignore') |
| |
| def execute_setup_common(supported_fmts: Sequence[str] = (), |
| supported_platforms: Sequence[str] = (), |
| supported_cache_modes: Sequence[str] = (), |
| supported_aio_modes: Sequence[str] = (), |
| unsupported_fmts: Sequence[str] = (), |
| supported_protocols: Sequence[str] = (), |
| unsupported_protocols: Sequence[str] = (), |
| required_fmts: Sequence[str] = (), |
| unsupported_imgopts: Sequence[str] = ()) -> bool: |
| """ |
| Perform necessary setup for either script-style or unittest-style tests. |
| |
| :return: Bool; Whether or not debug mode has been requested via the CLI. |
| """ |
| # Note: Python 3.6 and pylint do not like 'Collection' so use 'Sequence'. |
| |
| debug = '-d' in sys.argv |
| if debug: |
| sys.argv.remove('-d') |
| logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN)) |
| |
| _verify_image_format(supported_fmts, unsupported_fmts) |
| _verify_protocol(supported_protocols, unsupported_protocols) |
| _verify_platform(supported=supported_platforms) |
| _verify_cache_mode(supported_cache_modes) |
| _verify_aio_mode(supported_aio_modes) |
| _verify_formats(required_fmts) |
| _verify_virtio_blk() |
| _verify_imgopts(unsupported_imgopts) |
| |
| return debug |
| |
| def execute_test(*args, test_function=None, **kwargs): |
| """Run either unittest or script-style tests.""" |
| |
| debug = execute_setup_common(*args, **kwargs) |
| if not test_function: |
| execute_unittest(sys.argv, debug) |
| else: |
| test_function() |
| |
| def activate_logging(): |
| """Activate iotests.log() output to stdout for script-style tests.""" |
| handler = logging.StreamHandler(stream=sys.stdout) |
| formatter = logging.Formatter('%(message)s') |
| handler.setFormatter(formatter) |
| test_logger.addHandler(handler) |
| test_logger.setLevel(logging.INFO) |
| test_logger.propagate = False |
| |
| # This is called from script-style iotests without a single point of entry |
| def script_initialize(*args, **kwargs): |
| """Initialize script-style tests without running any tests.""" |
| activate_logging() |
| execute_setup_common(*args, **kwargs) |
| |
| # This is called from script-style iotests with a single point of entry |
| def script_main(test_function, *args, **kwargs): |
| """Run script-style tests outside of the unittest framework""" |
| activate_logging() |
| execute_test(*args, test_function=test_function, **kwargs) |
| |
| # This is called from unittest style iotests |
| def main(*args, **kwargs): |
| """Run tests using the unittest framework""" |
| execute_test(*args, **kwargs) |
