# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
System-level utilities and helper functions.
"""
from heat_cfnclient.openstack.common import log as logging
LOG = logging.getLogger(__name__)
def chunkreadable(iter, chunk_size=65536):
"""
Wrap a readable iterator with a reader yielding chunks of
a preferred size, otherwise leave iterator unchanged.
:param iter: an iter which may also be readable
:param chunk_size: maximum size of chunk
"""
return chunkiter(iter, chunk_size) if hasattr(iter, 'read') else iter
def chunkiter(fp, chunk_size=65536):
"""
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import functools
from heat_cfnclient.common import exception
from heat_cfnclient.openstack.common import log as logging
LOG = logging.getLogger(__name__)
SUCCESS = 0
FAILURE = 1
def catch_error(action):
"""Decorator to provide sensible default error handling for CLI actions."""
def wrap(func):
@functools.wraps(func)
def wrapper(*arguments, **kwargs):
try:
ret = func(*arguments, **kwargs)
return SUCCESS if ret is None else ret
except exception.NotAuthorized:
LOG.error("Not authorized to make this request. Check " +