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# Copyright (c) 2016 Red Hat, Inc.
#
# This file is part of libgfapi-python project which is a
# subproject of GlusterFS ( www.gluster.org)
#
# This file is licensed to you under your choice of the GNU Lesser
# General Public License, version 3 or any later version (LGPLv3 or
# later), or the GNU General Public License, version 2 (GPLv2), in all
# cases as published by the Free Software Foundation.
import os
import errno
from functools import wraps
from gluster.exceptions import VolumeNotMounted
def validate_mount(func):
"""
Decorator to assert that volume is initialized and mounted before any
further I/O calls are invoked by methods.
:param func: method to be decorated and checked.
"""
def _exception(volname):
raise VolumeNotMounted('Volume "%s" not mounted.' % (volname))
@wraps(func)
def wrapper(*args, **kwargs):
self = args[0]
if self.fs and self._mounted:
return func(*args, **kwargs)
else:
return _exception(self.volname)
wrapper.__wrapped__ = func
return wrapper
def validate_glfd(func):
"""
Decorator to assert that glfd is valid.
:param func: method to be decorated and checked.
"""
def _exception():
raise OSError(errno.EBADF, os.strerror(errno.EBADF))
@wraps(func)
def wrapper(*args, **kwargs):
self = args[0]
if self.fd:
return func(*args, **kwargs)
else:
return _exception()
wrapper.__wrapped__ = func
return wrapper
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