def _atomic_copytree(srcpath, dstpath, remove_src=False):
"""
Copy srcpath to dstpatch in an atomic manner.
It applies atomic directory copy by using the atomicity of overwriting a
link (rename syscall).
In case the remove_src flag argument is True, the srcpath is deleted.
Note: In case of an interruption, it is assured that the destination is
intact, pointing to the previous data or the new one. Intermediate
temporary files or the srcpath may still exists on the filesystem.
"""
rand_suffix = random_iface_name(max_length=8)
rand_dstpath = dstpath + '.' + rand_suffix
rand_dstpath_symlink = rand_dstpath + '.ln'
shutil.copytree(srcpath, rand_dstpath)
os.symlink(rand_dstpath, rand_dstpath_symlink)
old_realdstpath = os.path.realpath(dstpath)
old_realdstpath_existed = old_realdstpath != dstpath
_fsynctree(rand_dstpath)
os.rename(rand_dstpath_symlink, dstpath)
if old_realdstpath_existed:
fileutils.rm_tree(old_realdstpath)
if remove_src:
fileutils.rm_tree(srcpath)
def _atomic_copytree(srcpath, dstpath, remove_src=False):
"""
Copy srcpath to dstpatch in an atomic manner.
It applies atomic directory copy by using the atomicity of overwriting a
link (rename syscall).
In case the remove_src flag argument is True, the srcpath is deleted.
Note: In case of an interruption, it is assured that the destination is
intact, pointing to the previous data or the new one. Intermediate
temporary files or the srcpath may still exists on the filesystem.
"""
rand_suffix = random_iface_name(max_length=8)
rand_dstpath = dstpath + '.' + rand_suffix
rand_dstpath_symlink = rand_dstpath + '.ln'
shutil.copytree(srcpath, rand_dstpath)
os.symlink(rand_dstpath, rand_dstpath_symlink)
old_realdstpath = os.path.realpath(dstpath)
old_realdstpath_existed = old_realdstpath != dstpath
_fsynctree(rand_dstpath)
os.rename(rand_dstpath_symlink, dstpath)
if old_realdstpath_existed:
fileutils.rm_tree(old_realdstpath)
if remove_src:
fileutils.rm_tree(srcpath)
def netconf_dir():
tempdir = tempfile.mkdtemp()
try:
os.mkdir(os.path.join(tempdir, NETCONF_NETS))
os.mkdir(os.path.join(tempdir, NETCONF_BONDS))
os.mkdir(os.path.join(tempdir, NETCONF_DEVS))
yield tempdir
finally:
fileutils.rm_tree(tempdir)
def _clear_config(confpath):
try:
real_confpath = os.path.realpath(confpath)
fileutils.rm_file(confpath)
fileutils.rm_tree(real_confpath)
except OSError as e:
# Support the "old" non-symlink config path.
if e.errno == errno.EISDIR:
fileutils.rm_tree(confpath)
else:
raise
def _create_hook_dir(dir_name):
dir_path = os.path.join(constants.P_VDSM_HOOKS, dir_name)
dir_existed = os.path.isdir(dir_path)
if not dir_existed:
os.mkdir(dir_path)
yield dir_path
if not dir_existed:
fileutils.rm_tree(dir_path)
def _clear_config(confpath):
try:
real_confpath = os.path.realpath(confpath)
fileutils.rm_file(confpath)
fileutils.rm_tree(real_confpath)
except OSError as e:
# Support the "old" non-symlink config path.
if e.errno == errno.EISDIR:
fileutils.rm_tree(confpath)
else:
raise
def create_hooks_dir():
created_root_dir = None
dir_path = constants.P_VDSM_HOOKS
while not os.path.isdir(dir_path):
created_root_dir = dir_path
dir_path, _ = os.path.split(dir_path)
if created_root_dir:
os.makedirs(constants.P_VDSM_HOOKS)
yield
if created_root_dir:
fileutils.rm_tree(created_root_dir)
def _store_net_config():
"""
Declare the current running config as 'safe' and persist this safe config.
It is implemented by copying the running config to the persistent (safe)
config in an atomic manner.
It applies atomic directory copy by using the atomicity of overwriting a
link (rename syscall).
"""
safeconf_dir = CONF_PERSIST_DIR[:-1]
rand_suffix = random_iface_name(max_length=8)
new_safeconf_dir = safeconf_dir + '.' + rand_suffix
new_safeconf_symlink = new_safeconf_dir + '.ln'
shutil.copytree(CONF_RUN_DIR[:-1], new_safeconf_dir)
os.symlink(new_safeconf_dir, new_safeconf_symlink)
real_old_safeconf_dir = os.path.realpath(safeconf_dir)
os.rename(new_safeconf_symlink, safeconf_dir)
real_old_safeconf_dir_existed = real_old_safeconf_dir != safeconf_dir
if real_old_safeconf_dir_existed:
fileutils.rm_tree(real_old_safeconf_dir)
def _store_net_config():
"""
Declare the current running config as 'safe' and persist this safe config.
It is implemented by copying the running config to the persistent (safe)
config in an atomic manner.
It applies atomic directory copy by using the atomicity of overwriting a
link (rename syscall).
"""
safeconf_dir = CONF_PERSIST_DIR[:-1]
rand_suffix = random_iface_name(max_length=8)
new_safeconf_dir = safeconf_dir + '.' + rand_suffix
new_safeconf_symlink = new_safeconf_dir + '.ln'
shutil.copytree(CONF_RUN_DIR[:-1], new_safeconf_dir)
os.symlink(new_safeconf_dir, new_safeconf_symlink)
real_old_safeconf_dir = os.path.realpath(safeconf_dir)
os.rename(new_safeconf_symlink, safeconf_dir)
real_old_safeconf_dir_existed = real_old_safeconf_dir != safeconf_dir
if real_old_safeconf_dir_existed:
fileutils.rm_tree(real_old_safeconf_dir)
def wrapper(*args, **kwargs):
directory_existed = False
if not functional:
old_vdsm_hooks = constants.P_VDSM_HOOKS
constants.P_VDSM_HOOKS = tempfile.mkdtemp()
hook_path = constants.P_VDSM_HOOKS + '/' + hook_dir
try:
os.mkdir(hook_path)
except OSError as mkdir_error:
if mkdir_error.errno == errno.EEXIST:
directory_existed = True
else:
raise
cookie_file = _createHookScript(hook_path, hook_name, hook_script)
output = None
try:
kwargs['hook_cookiefile'] = cookie_file
output = test_function(*args, **kwargs)
finally:
if directory_existed:
fileutils.rm_file(hook_path + '/' + hook_name)
else:
fileutils.rm_tree(hook_path)
fileutils.rm_file(cookie_file)
if not functional:
constants.P_VDSM_HOOKS = old_vdsm_hooks
return output
def tearDown(self):
self.patch.revert()
fileutils.rm_tree(self._test_dir)
def tearDown(self):
fileutils.rm_tree(self.tempdir)
def _clearDisk(self):
logging.info('Clearing %s and %s', self.networksPath,
self.bondingsPath)
fileutils.rm_tree(self.networksPath)
fileutils.rm_tree(self.bondingsPath)
def tearDown(self):
fileutils.rm_tree(self.tempdir)
def tearDown(self):
self.patch.revert()
fileutils.rm_tree(self._test_dir)
def _clearDisk(self):
logging.info('Clearing %s and %s',
self.networksPath, self.bondingsPath)
fileutils.rm_tree(self.networksPath)
fileutils.rm_tree(self.bondingsPath)
