def _PrepareFileBasedStorage(enabled_disk_templates,
file_storage_dir,
default_dir,
file_disk_template,
_storage_path_acceptance_fn,
init_fn=_InitFileStorageDir,
acceptance_fn=None):
"""Checks if a file-base storage type is enabled and inits the dir.
@type enabled_disk_templates: list of string
@param enabled_disk_templates: list of enabled disk templates
@type file_storage_dir: string
@param file_storage_dir: the file storage directory
@type default_dir: string
@param default_dir: default file storage directory when C{file_storage_dir}
is 'None'
@type file_disk_template: string
@param file_disk_template: a disk template whose storage type is 'ST_FILE',
'ST_SHARED_FILE' or 'ST_GLUSTER'
@type _storage_path_acceptance_fn: function
@param _storage_path_acceptance_fn: checks whether the given file-based
storage directory is acceptable
@see: C{cluster.CheckFileBasedStoragePathVsEnabledDiskTemplates} for details
@rtype: string
@returns: the name of the actual file storage directory
"""
assert (file_disk_template in utils.storage.GetDiskTemplatesOfStorageTypes(
constants.ST_FILE, constants.ST_SHARED_FILE, constants.ST_GLUSTER))
file_storage_enabled = file_disk_template in enabled_disk_templates
if file_storage_dir is None:
if file_storage_enabled:
file_storage_dir = default_dir
else:
file_storage_dir = ""
if not acceptance_fn:
acceptance_fn = \
lambda path: filestorage.CheckFileStoragePathAcceptance(
path, exact_match_ok=True)
_storage_path_acceptance_fn(logging.warning, file_storage_dir,
enabled_disk_templates)
if file_storage_enabled:
try:
acceptance_fn(file_storage_dir)
except errors.FileStoragePathError as e:
raise errors.OpPrereqError(str(e))
result_file_storage_dir = init_fn(file_storage_dir)
else:
result_file_storage_dir = file_storage_dir
return result_file_storage_dir
def testAllowedPath(self):
tmpfile = self._CreateTempFile()
utils.WriteFile(tmpfile, data="""
/srv/storage
""")
filestorage.CheckFileStoragePathAcceptance(
"/srv/storage/inst1", _filename=tmpfile)
# No additional path component
self.assertRaises(errors.FileStoragePathError,
filestorage.CheckFileStoragePathAcceptance,
"/srv/storage", _filename=tmpfile)
# Forbidden path
self.assertRaises(errors.FileStoragePathError,
filestorage.CheckFileStoragePathAcceptance,
"/usr/lib64/xyz", _filename=tmpfile)