def from_dir(cls, res_dir, update_res_dir=True):
"""
Wrapper around :meth:`lisa.utils.Serializable.from_path`.
It uses :meth:`_filepath` to get the name of the serialized file to
reload.
"""
res_dir = ArtifactPath(root=res_dir, relative='')
bundle = super().from_path(cls._filepath(res_dir))
# We need to update the res_dir to the one we were given
if update_res_dir:
bundle.res_dir = res_dir
return bundle
def _get_res_dir(self, root, relative, name, append_time, symlink):
logger = self.get_logger()
while True:
time_str = datetime.now().strftime('%Y%m%d_%H%M%S.%f')
if not name:
name = time_str
elif append_time:
name = "{}-{}".format(name, time_str)
# If we were given an ArtifactPath with an existing root, we
# preserve that root so it can be relocated as the caller wants it
res_dir = ArtifactPath(root, os.path.join(relative,name))
# Compute base installation path
logger.info('Creating result directory: %s', str(res_dir))
# It will fail if the folder already exists. In that case,
# append_time should be used to ensure we get a unique name.
try:
os.makedirs(res_dir)
break
except FileExistsError:
# If the time is used in the name, there is some hope that the
# next time it will succeed
if append_time:
logger.info('Directory already exists, retrying ...')
continue
else:
raise
if symlink:
res_lnk = os.path.join(LISA_HOME, LATEST_LINK)
with contextlib.suppress(FileNotFoundError):
os.remove(res_lnk)
# There may be a race condition with another tool trying to create
# the link
with contextlib.suppress(FileExistsError):
os.symlink(res_dir, res_lnk)
return res_dir