| # 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 errno |
| import os |
| import re |
| import subprocess |
| import string |
| import unittest |
| import sys |
| import struct |
| import json |
| import signal |
| import logging |
| import atexit |
| import io |
| from collections import OrderedDict |
| |
| sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python')) |
| from qemu import qtest |
| |
| assert sys.version_info >= (3,6) |
| |
| # 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_args = [os.environ.get('QEMU_NBD_PROG', 'qemu-nbd')] |
| 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(' ') |
| |
| imgfmt = os.environ.get('IMGFMT', 'raw') |
| imgproto = os.environ.get('IMGPROTO', 'file') |
| test_dir = os.environ.get('TEST_DIR') |
| sock_dir = os.environ.get('SOCK_DIR') |
| output_dir = os.environ.get('OUTPUT_DIR', '.') |
| cachemode = os.environ.get('CACHEMODE') |
| aiomode = os.environ.get('AIOMODE') |
| qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE') |
| |
| socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper') |
| |
| luks_default_secret_object = 'secret,id=keysec0,data=' + \ |
| os.environ.get('IMGKEYSECRET', '') |
| luks_default_key_secret_opt = 'key-secret=keysec0' |
| |
| |
| def qemu_img(*args): |
| '''Run qemu-img and return the exit code''' |
| devnull = open('/dev/null', 'r+') |
| exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull) |
| if exitcode < 0: |
| sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args)))) |
| return exitcode |
| |
| 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): |
| args = list(args) |
| |
| # default luks support |
| if '-f' in args and args[args.index('-f') + 1] == 'luks': |
| if '-o' in args: |
| i = args.index('-o') |
| if 'key-secret' not in args[i + 1]: |
| args[i + 1].append(luks_default_key_secret_opt) |
| args.insert(i + 2, '--object') |
| args.insert(i + 3, luks_default_secret_object) |
| else: |
| args = ['-o', luks_default_key_secret_opt, |
| '--object', luks_default_secret_object] + args |
| |
| args.insert(0, 'create') |
| |
| return qemu_img(*args) |
| |
| def qemu_img_verbose(*args): |
| '''Run qemu-img without suppressing its output and return the exit code''' |
| exitcode = subprocess.call(qemu_img_args + list(args)) |
| if exitcode < 0: |
| sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args)))) |
| return exitcode |
| |
| def qemu_img_pipe(*args): |
| '''Run qemu-img and return its output''' |
| subp = subprocess.Popen(qemu_img_args + list(args), |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| universal_newlines=True) |
| exitcode = subp.wait() |
| if exitcode < 0: |
| sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args)))) |
| return subp.communicate()[0] |
| |
| def qemu_img_log(*args): |
| result = qemu_img_pipe(*args) |
| log(result, filters=[filter_testfiles]) |
| return result |
| |
| def img_info_log(filename, filter_path=None, imgopts=False, extra_args=[]): |
| args = [ 'info' ] |
| if imgopts: |
| args.append('--image-opts') |
| else: |
| args += [ '-f', imgfmt ] |
| args += extra_args |
| args.append(filename) |
| |
| output = qemu_img_pipe(*args) |
| if not filter_path: |
| filter_path = filename |
| log(filter_img_info(output, filter_path)) |
| |
| def qemu_io(*args): |
| '''Run qemu-io and return the stdout data''' |
| args = qemu_io_args + list(args) |
| subp = subprocess.Popen(args, stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| universal_newlines=True) |
| exitcode = subp.wait() |
| if exitcode < 0: |
| sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args))) |
| return subp.communicate()[0] |
| |
| def qemu_io_log(*args): |
| result = qemu_io(*args) |
| log(result, filters=[filter_testfiles, filter_qemu_io]) |
| return result |
| |
| def qemu_io_silent(*args): |
| '''Run qemu-io and return the exit code, suppressing stdout''' |
| args = qemu_io_args + list(args) |
| exitcode = subprocess.call(args, stdout=open('/dev/null', 'w')) |
| if exitcode < 0: |
| sys.stderr.write('qemu-io received signal %i: %s\n' % |
| (-exitcode, ' '.join(args))) |
| return exitcode |
| |
| def qemu_io_silent_check(*args): |
| '''Run qemu-io and return the true if subprocess returned 0''' |
| args = qemu_io_args + list(args) |
| exitcode = subprocess.call(args, stdout=open('/dev/null', 'w'), |
| stderr=subprocess.STDOUT) |
| return exitcode == 0 |
| |
| def get_virtio_scsi_device(): |
| if qemu_default_machine == 's390-ccw-virtio': |
| return 'virtio-scsi-ccw' |
| return 'virtio-scsi-pci' |
| |
| class QemuIoInteractive: |
| def __init__(self, *args): |
| self.args = qemu_io_args + list(args) |
| self._p = subprocess.Popen(self.args, stdin=subprocess.PIPE, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| universal_newlines=True) |
| assert self._p.stdout.read(9) == 'qemu-io> ' |
| |
| 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 != 'q' and cmd != 'quit' |
| self._p.stdin.write(cmd + '\n') |
| self._p.stdin.flush() |
| return self._read_output() |
| |
| |
| 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): |
| '''Run qemu-nbd in daemon mode and return both the parent's exit code |
| and its output in case of an error''' |
| subp = subprocess.Popen(qemu_nbd_args + ['--fork'] + list(args), |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| universal_newlines=True) |
| exitcode = subp.wait() |
| if exitcode < 0: |
| sys.stderr.write('qemu-nbd received signal %i: %s\n' % |
| (-exitcode, |
| ' '.join(qemu_nbd_args + ['--fork'] + list(args)))) |
| if exitcode == 0: |
| return exitcode, '' |
| else: |
| return exitcode, subp.communicate()[0] |
| |
| def qemu_nbd_popen(*args): |
| '''Run qemu-nbd in daemon mode and return the parent's exit code''' |
| return subprocess.Popen(qemu_nbd_args + ['--persistent'] + list(args)) |
| |
| def compare_images(img1, img2, fmt1=imgfmt, fmt2=imgfmt): |
| '''Return True if two image files are identical''' |
| return qemu_img('compare', '-f', fmt1, |
| '-F', fmt2, img1, img2) == 0 |
| |
| def create_image(name, size): |
| '''Create a fully-allocated raw image with sector markers''' |
| file = open(name, 'wb') |
| i = 0 |
| while i < size: |
| sector = struct.pack('>l504xl', i // 512, i // 512) |
| file.write(sector) |
| i = i + 512 |
| file.close() |
| |
| def image_size(img): |
| '''Return image's virtual size''' |
| r = qemu_img_pipe('info', '--output=json', '-f', imgfmt, img) |
| return json.loads(r)['virtual-size'] |
| |
| 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]* \([0-9\/.inf]* [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)") |
| 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) |
| else: |
| items = qmsg.items() |
| |
| for k, v in items: |
| if isinstance(v, list) or isinstance(v, dict): |
| qmsg[k] = filter_qmp(v, filter_fn) |
| else: |
| qmsg[k] = filter_fn(k, v) |
| return qmsg |
| |
| def filter_testfiles(msg): |
| prefix = os.path.join(test_dir, "%s-" % (os.getpid())) |
| return msg.replace(prefix, 'TEST_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_generated_node_ids(msg): |
| return re.sub("#block[0-9]+", "NODE_NAME", msg) |
| |
| def filter_img_info(output, filename): |
| lines = [] |
| for line in output.split('\n'): |
| if 'disk size' in line or 'actual-size' in line: |
| continue |
| line = line.replace(filename, 'TEST_IMG') \ |
| .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) |
| 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 log(msg, filters=[], indent=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) or isinstance(msg, list): |
| # Python < 3.4 needs to know not to add whitespace when pretty-printing: |
| separators = (', ', ': ') if indent is None else (',', ': ') |
| # Don't sort if it's already sorted |
| do_sort = not isinstance(msg, OrderedDict) |
| print(json.dumps(msg, sort_keys=do_sort, |
| indent=indent, separators=separators)) |
| else: |
| print(msg) |
| |
| class Timeout: |
| def __init__(self, seconds, errmsg = "Timeout"): |
| self.seconds = seconds |
| self.errmsg = errmsg |
| def __enter__(self): |
| signal.signal(signal.SIGALRM, self.timeout) |
| signal.setitimer(signal.ITIMER_REAL, self.seconds) |
| return self |
| def __exit__(self, type, value, traceback): |
| signal.setitimer(signal.ITIMER_REAL, 0) |
| return False |
| def timeout(self, signum, frame): |
| raise Exception(self.errmsg) |
| |
| def file_pattern(name): |
| return "{0}-{1}".format(os.getpid(), name) |
| |
| class FilePaths(object): |
| """ |
| FilePaths is an auto-generated filename that cleans itself up. |
| |
| Use this context manager to generate filenames and ensure that the file |
| gets deleted:: |
| |
| with FilePaths(['test.img']) as img_path: |
| qemu_img('create', img_path, '1G') |
| # migration_sock_path is automatically deleted |
| """ |
| def __init__(self, names, base_dir=test_dir): |
| self.paths = [] |
| for name in names: |
| self.paths.append(os.path.join(base_dir, file_pattern(name))) |
| |
| def __enter__(self): |
| return self.paths |
| |
| def __exit__(self, exc_type, exc_val, exc_tb): |
| try: |
| for path in self.paths: |
| os.remove(path) |
| except OSError: |
| pass |
| return False |
| |
| class FilePath(FilePaths): |
| """ |
| FilePath is a specialization of FilePaths that takes a single filename. |
| """ |
| def __init__(self, name, base_dir=test_dir): |
| super(FilePath, self).__init__([name], base_dir) |
| |
| def __enter__(self): |
| return self.paths[0] |
| |
| def file_path_remover(): |
| for path in reversed(file_path_remover.paths): |
| try: |
| os.remove(path) |
| except OSError: |
| pass |
| |
| |
| 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 Exception("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()) |
| super(VM, self).__init__(qemu_prog, qemu_opts, name=name, |
| test_dir=test_dir, |
| socket_scm_helper=socket_scm_helper, |
| sock_dir=sock_dir) |
| self._num_drives = 0 |
| |
| 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', 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' % format) |
| options.append('cache=%s' % cachemode) |
| options.append('aio=%s' % aiomode) |
| |
| if opts: |
| options.append(opts) |
| |
| if 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 pause_drive(self, drive, event=None): |
| '''Pause drive r/w operations''' |
| if not event: |
| self.pause_drive(drive, "read_aio") |
| self.pause_drive(drive, "write_aio") |
| return |
| self.qmp('human-monitor-command', |
| command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive)) |
| |
| def resume_drive(self, drive): |
| self.qmp('human-monitor-command', |
| command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive)) |
| |
| def hmp_qemu_io(self, drive, cmd): |
| '''Write to a given drive using an HMP command''' |
| return self.qmp('human-monitor-command', |
| command_line='qemu-io %s "%s"' % (drive, cmd)) |
| |
| def flatten_qmp_object(self, obj, output=None, basestr=''): |
| if output is None: |
| output = dict() |
| if isinstance(obj, list): |
| for i in range(len(obj)): |
| self.flatten_qmp_object(obj[i], 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 = 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, auto_finalize=True, auto_dismiss=False, |
| pre_finalize=None, cancel=False, use_log=True, wait=60.0): |
| """ |
| 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 use_log: Bool. When false, does not log QMP messages. |
| :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': |
| if use_log: |
| log(ev) |
| 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'] |
| if use_log: |
| log('Job failed: %s' % (j['error'])) |
| elif status == 'ready': |
| if use_log: |
| self.qmp_log('job-complete', id=job) |
| else: |
| self.qmp('job-complete', id=job) |
| elif status == 'pending' and not auto_finalize: |
| if pre_finalize: |
| pre_finalize() |
| if cancel and use_log: |
| self.qmp_log('job-cancel', id=job) |
| elif cancel: |
| self.qmp('job-cancel', id=job) |
| elif use_log: |
| self.qmp_log('job-finalize', id=job) |
| else: |
| self.qmp('job-finalize', id=job) |
| elif status == 'concluded' and not auto_dismiss: |
| if use_log: |
| self.qmp_log('job-dismiss', id=job) |
| else: |
| self.qmp('job-dismiss', id=job) |
| 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) |
| 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): |
| while True: |
| event = self.event_wait('MIGRATION') |
| log(event, filters=[filter_qmp_event]) |
| if event['data']['status'] == 'completed': |
| break |
| # The event may occur in finish-migrate, so wait for the expected |
| # post-migration runstate |
| while self.qmp('query-status')['return']['status'] != expect_runstate: |
| pass |
| |
| 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: |
| return bitmap |
| elif 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 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('failed path traversal for "%s" in "%s"' % (path, str(d))) |
| d = d[component] |
| |
| if m: |
| if not isinstance(d, list): |
| self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d))) |
| try: |
| d = d[idx] |
| except IndexError: |
| self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(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 == None or b == 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.assertTrue(False, "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''' |
| result = self.vm.qmp('block-job-cancel', device=drive, force=force) |
| self.assert_qmp(result, 'return', {}) |
| |
| 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 |
| elif event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', drive) |
| |
| def wait_ready(self, drive='drive0'): |
| '''Wait until a block job BLOCK_JOB_READY event''' |
| f = {'data': {'type': 'mirror', 'device': drive } } |
| event = self.vm.event_wait(name='BLOCK_JOB_READY', match=f) |
| |
| 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) |
| |
| result = self.vm.qmp('block-job-complete', device=drive) |
| self.assert_qmp(result, 'return', {}) |
| |
| event = self.wait_until_completed(drive=drive, error=completion_error) |
| self.assert_qmp(event, 'data/type', 'mirror') |
| |
| def pause_wait(self, job_id='job0'): |
| with Timeout(1, "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'] == True and job['busy'] == False: |
| return job |
| break |
| assert found |
| |
| def pause_job(self, job_id='job0', wait=True): |
| result = self.vm.qmp('block-job-pause', device=job_id) |
| self.assert_qmp(result, 'return', {}) |
| if wait: |
| return self.pause_wait(job_id) |
| return result |
| |
| 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]) |
| |
| open('%s/%s.notrun' % (output_dir, seq), 'w').write(reason + '\n') |
| print('%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]) |
| |
| open('%s/%s.casenotrun' % (output_dir, seq), 'a').write( |
| ' [case not run] ' + reason + '\n') |
| |
| def verify_image_format(supported_fmts=[], unsupported_fmts=[]): |
| assert not (supported_fmts and unsupported_fmts) |
| |
| if 'generic' in supported_fmts and \ |
| os.environ.get('IMGFMT_GENERIC', 'true') == 'true': |
| # similar to |
| # _supported_fmt generic |
| # for bash tests |
| return |
| |
| 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) |
| |
| def verify_protocol(supported=[], unsupported=[]): |
| 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=None, unsupported=None): |
| if unsupported is not None: |
| if any((sys.platform.startswith(x) for x in unsupported)): |
| notrun('not suitable for this OS: %s' % sys.platform) |
| |
| if supported is not None: |
| 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=[]): |
| 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=[]): |
| if supported_aio_modes and (aiomode not in supported_aio_modes): |
| notrun('not suitable for this aio mode: %s' % aiomode) |
| |
| def supports_quorum(): |
| return 'quorum' in qemu_img_pipe('--help') |
| |
| def verify_quorum(): |
| '''Skip test suite if quorum support is not available''' |
| if not supports_quorum(): |
| notrun('quorum support missing') |
| |
| def qemu_pipe(*args): |
| '''Run qemu with an option to print something and exit (e.g. a help option), |
| and return its output''' |
| args = [qemu_prog] + qemu_opts + list(args) |
| subp = subprocess.Popen(args, stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| universal_newlines=True) |
| exitcode = subp.wait() |
| if exitcode < 0: |
| sys.stderr.write('qemu received signal %i: %s\n' % (-exitcode, |
| ' '.join(args))) |
| return subp.communicate()[0] |
| |
| 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, **kwargs): |
| 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: |
| test_case.case_skip('{}: formats {} are not whitelisted'.format( |
| test_case, usf_list)) |
| else: |
| return 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])) |
| else: |
| return func(*args, **kwargs) |
| return func_wrapper |
| |
| def execute_unittest(output, verbosity, debug): |
| runner = unittest.TextTestRunner(stream=output, descriptions=True, |
| verbosity=verbosity) |
| try: |
| # unittest.main() will use sys.exit(); so expect a SystemExit |
| # exception |
| unittest.main(testRunner=runner) |
| finally: |
| if not debug: |
| out = output.getvalue() |
| out = re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', out) |
| |
| # Hide skipped tests from the reference output |
| out = re.sub(r'OK \(skipped=\d+\)', 'OK', out) |
| out_first_line, out_rest = out.split('\n', 1) |
| out = out_first_line.replace('s', '.') + '\n' + out_rest |
| |
| sys.stderr.write(out) |
| |
| def execute_test(test_function=None, |
| supported_fmts=[], |
| supported_platforms=None, |
| supported_cache_modes=[], supported_aio_modes={}, |
| unsupported_fmts=[], supported_protocols=[], |
| unsupported_protocols=[]): |
| """Run either unittest or script-style tests.""" |
| |
| # We are using TEST_DIR and QEMU_DEFAULT_MACHINE 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. |
| if test_dir is None or qemu_default_machine is None: |
| sys.stderr.write('Please run this test via the "check" script\n') |
| sys.exit(os.EX_USAGE) |
| |
| debug = '-d' in sys.argv |
| verbosity = 1 |
| 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) |
| |
| if debug: |
| output = sys.stdout |
| verbosity = 2 |
| sys.argv.remove('-d') |
| else: |
| # We need to filter out the time taken from the output so that |
| # qemu-iotest can reliably diff the results against master output. |
| output = io.StringIO() |
| |
| logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN)) |
| |
| if not test_function: |
| execute_unittest(output, verbosity, debug) |
| else: |
| test_function() |
| |
| def script_main(test_function, *args, **kwargs): |
| """Run script-style tests outside of the unittest framework""" |
| execute_test(test_function, *args, **kwargs) |
| |
| def main(*args, **kwargs): |
| """Run tests using the unittest framework""" |
| execute_test(None, *args, **kwargs) |
