# 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 . # import os import re import subprocess import unittest import sys import struct import json import signal import logging import atexit import io from collections import OrderedDict import faulthandler sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python')) from qemu import qtest assert sys.version_info >= (3, 6) 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_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 not in ('q', '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)))) return exitcode, subp.communicate()[0] if exitcode else '' 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, (dict, list)): 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') 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) 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, 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, exc_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: """ 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, 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 = 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 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('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 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''' 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 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.""" f = {'data': {'type': 'mirror', 'device': drive}} return 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(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): 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)) return None 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])) return None 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)