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charset="utf-8" Add TestEnv class, which will handle test environment in a new python iotests running framework. Difference with current ./check interface: - -v (verbose) option dropped, as it is unused - -xdiff option is dropped, until somebody complains that it is needed - same for -n option - same for looking for binaries in $build_iotests directory. Signed-off-by: Vladimir Sementsov-Ogievskiy Tested-by: Eric Blake --- tests/qemu-iotests/testenv.py | 255 ++++++++++++++++++++++++++++++++++ 1 file changed, 255 insertions(+) create mode 100644 tests/qemu-iotests/testenv.py diff --git a/tests/qemu-iotests/testenv.py b/tests/qemu-iotests/testenv.py new file mode 100644 index 0000000000..0fe5076088 --- /dev/null +++ b/tests/qemu-iotests/testenv.py @@ -0,0 +1,255 @@ +# TestEnv class to manage test environment variables. +# +# Copyright (c) 2020-2021 Virtuozzo International GmbH +# +# 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 sys +import tempfile +from pathlib import Path +import shutil +import collections +import subprocess +from contextlib import AbstractContextManager +from typing import Dict, Any, Optional + + +def get_default_machine(qemu_prog: str) -> str: + outp =3D subprocess.run([qemu_prog, '-machine', 'help'], check=3DTrue, + text=3DTrue, stdout=3Dsubprocess.PIPE).stdout + + machines =3D outp.split('\n') + default_machine =3D next(m for m in machines if m.endswith(' (default)= ')) + default_machine =3D default_machine.split(' ', 1)[0] + + alias_suf =3D ' (alias of {})'.format(default_machine) + alias =3D next((m for m in machines if m.endswith(alias_suf)), None) + if alias is not None: + default_machine =3D alias.split(' ', 1)[0] + + return default_machine + + +class TestEnv(AbstractContextManager['TestEnv']): + """ + Manage system environment for running tests + + The following variables are supported/provided. They are represented by + lower-cased TestEnv attributes. + """ + + # We store environment variables as instance attributes, and there are= a + # lot of them. Silence pylint: + # pylint: disable=3Dtoo-many-instance-attributes + + env_variables =3D ['PYTHONPATH', 'TEST_DIR', 'SOCK_DIR', 'SAMPLE_IMG_D= IR', + 'OUTPUT_DIR', 'PYTHON', 'QEMU_PROG', 'QEMU_IMG_PROG', + 'QEMU_IO_PROG', 'QEMU_NBD_PROG', 'QSD_PROG', + 'SOCKET_SCM_HELPER', 'QEMU_OPTIONS', 'QEMU_IMG_OPTION= S', + 'QEMU_IO_OPTIONS', 'QEMU_NBD_OPTIONS', 'IMGOPTS', + 'IMGFMT', 'IMGPROTO', 'AIOMODE', 'CACHEMODE', + 'VALGRIND_QEMU', 'CACHEMODE_IS_DEFAULT', 'IMGFMT_GENE= RIC', + 'IMGOPTSSYNTAX', 'IMGKEYSECRET', 'QEMU_DEFAULT_MACHIN= E'] + + def get_env(self) -> Dict[str, str]: + env =3D {} + for v in self.env_variables: + val =3D getattr(self, v.lower(), None) + if val is not None: + env[v] =3D val + + return env + + def init_directories(self): + """Init directory variables: + PYTHONPATH + TEST_DIR + SOCK_DIR + SAMPLE_IMG_DIR + OUTPUT_DIR + """ + self.pythonpath =3D os.getenv('PYTHONPATH') + if self.pythonpath: + self.pythonpath =3D self.source_iotests + os.pathsep + \ + self.pythonpath + else: + self.pythonpath =3D self.source_iotests + + self.test_dir =3D os.getenv('TEST_DIR', + os.path.join(os.getcwd(), 'scratch')) + Path(self.test_dir).mkdir(parents=3DTrue, exist_ok=3DTrue) + + self.sock_dir =3D os.getenv('SOCK_DIR') + self.tmp_sock_dir =3D False + if self.sock_dir: + Path(self.test_dir).mkdir(parents=3DTrue, exist_ok=3DTrue) + else: + self.sock_dir =3D tempfile.mkdtemp() + self.tmp_sock_dir =3D True + + self.sample_img_dir =3D os.getenv('SAMPLE_IMG_DIR', + os.path.join(self.source_iotests, + 'sample_images')) + + self.output_dir =3D os.getcwd() # OUTPUT_DIR + + def init_binaries(self): + """Init binary path variables: + PYTHON (for bash tests) + QEMU_PROG, QEMU_IMG_PROG, QEMU_IO_PROG, QEMU_NBD_PROG, QSD_PR= OG + SOCKET_SCM_HELPER + """ + self.python =3D sys.executable + + def root(*names): + return os.path.join(self.build_root, *names) + + arch =3D os.uname().machine + if 'ppc64' in arch: + arch =3D 'ppc64' + + self.qemu_prog =3D os.getenv('QEMU_PROG', root(f'qemu-system-{arch= }')) + self.qemu_img_prog =3D os.getenv('QEMU_IMG_PROG', root('qemu-img')) + self.qemu_io_prog =3D os.getenv('QEMU_IO_PROG', root('qemu-io')) + self.qemu_nbd_prog =3D os.getenv('QEMU_NBD_PROG', root('qemu-nbd')) + self.qsd_prog =3D os.getenv('QSD_PROG', root('storage-daemon', + 'qemu-storage-daemon')) + + for b in [self.qemu_img_prog, self.qemu_io_prog, self.qemu_nbd_pro= g, + self.qemu_prog, self.qsd_prog]: + if not os.path.exists(b): + sys.exit('Not such file: ' + b) + if not os.access(b, os.X_OK): + sys.exit('Not executable: ' + b) + + helper_path =3D os.path.join(self.build_iotests, 'socket_scm_helpe= r') + if os.access(helper_path, os.X_OK): + self.socket_scm_helper =3D helper_path # SOCKET_SCM_HELPER + + def __init__(self, imgfmt: str, imgproto: str, aiomode: str, + cachemode: Optional[str] =3D None, + imgopts: Optional[str] =3D None, + misalign: bool =3D False, + debug: bool =3D False) -> None: + self.imgfmt =3D imgfmt + self.imgproto =3D imgproto + self.aiomode =3D aiomode + self.imgopts =3D imgopts + self.misalign =3D misalign + self.debug =3D debug + + if cachemode is None: + self.cachemode_is_default =3D 'true' + self.cachemode =3D 'writeback' + else: + self.cachemode_is_default =3D 'false' + self.cachemode =3D cachemode + + # Initialize generic paths: build_root, build_iotests, source_iote= sts, + # which are needed to initialize some environment variables. They = are + # used by init_*() functions as well. + + if os.path.islink(sys.argv[0]): + # called from the build tree + self.source_iotests =3D os.path.dirname(os.readlink(sys.argv[0= ])) + self.build_iotests =3D os.path.dirname(os.path.abspath(sys.arg= v[0])) + else: + # called from the source tree + self.source_iotests =3D os.getcwd() + self.build_iotests =3D self.source_iotests + + self.build_root =3D os.path.join(self.build_iotests, '..', '..') + + self.init_directories() + self.init_binaries() + + # QEMU_OPTIONS + self.qemu_options =3D '-nodefaults -display none -accel qtest' + machine_map =3D ( + ('arm', 'virt'), + ('aarch64', 'virt'), + ('avr', 'mega2560'), + ('rx', 'gdbsim-r5f562n8'), + ('tricore', 'tricore_testboard') + ) + for suffix, machine in machine_map: + if self.qemu_prog.endswith(f'qemu-system-{suffix}'): + self.qemu_options +=3D f' -machine {machine}' + + # QEMU_DEFAULT_MACHINE + self.qemu_default_machine =3D get_default_machine(self.qemu_prog) + + self.qemu_img_options =3D os.getenv('QEMU_IMG_OPTIONS') + self.qemu_nbd_options =3D os.getenv('QEMU_NBD_OPTIONS') + + is_generic =3D self.imgfmt not in ['bochs', 'cloop', 'dmg'] + self.imgfmt_generic =3D 'true' if is_generic else 'false' + + self.qemu_io_options =3D f'--cache {self.cachemode} --aio {self.ai= omode}' + if self.misalign: + self.qemu_io_options +=3D ' --misalign' + + self.qemu_io_options_no_fmt =3D self.qemu_io_options + + if self.imgfmt =3D=3D 'luks': + self.imgoptssyntax =3D 'true' + self.imgkeysecret =3D '123456' + if not self.imgopts: + self.imgopts =3D 'iter-time=3D10' + elif 'iter-time=3D' not in self.imgopts: + self.imgopts +=3D ',iter-time=3D10' + else: + self.imgoptssyntax =3D 'false' + self.qemu_io_options +=3D ' -f ' + self.imgfmt + + if self.imgfmt =3D=3D 'vmkd': + if not self.imgopts: + self.imgopts =3D 'zeroed_grain=3Don' + elif 'zeroed_grain=3D' not in self.imgopts: + self.imgopts +=3D ',zeroed_grain=3Don' + + def close(self) -> None: + if self.tmp_sock_dir: + shutil.rmtree(self.sock_dir) + + def __enter__(self) -> 'TestEnv': + return self + + def __exit__(self, exc_type: Any, exc_value: Any, traceback: Any) -> N= one: + self.close() + + def print_env(self) -> None: + template =3D """\ +QEMU -- "{QEMU_PROG}" {QEMU_OPTIONS} +QEMU_IMG -- "{QEMU_IMG_PROG}" {QEMU_IMG_OPTIONS} +QEMU_IO -- "{QEMU_IO_PROG}" {QEMU_IO_OPTIONS} +QEMU_NBD -- "{QEMU_NBD_PROG}" {QEMU_NBD_OPTIONS} +IMGFMT -- {IMGFMT}{imgopts} +IMGPROTO -- {IMGPROTO} +PLATFORM -- {platform} +TEST_DIR -- {TEST_DIR} +SOCK_DIR -- {SOCK_DIR} +SOCKET_SCM_HELPER -- {SOCKET_SCM_HELPER}""" + + args =3D collections.defaultdict(str, self.get_env()) + + if 'IMGOPTS' in args: + args['imgopts'] =3D f" ({args['IMGOPTS']})" + + u =3D os.uname() + args['platform'] =3D f'{u.sysname}/{u.machine} {u.nodename} {u.rel= ease}' + + print(template.format_map(args)) --=20 2.29.2