deb-murano/muranoapi/dsl/namespace_resolver.py
Serg Melikyan 5958cced52 Resolve issues with circular dependency
* Resolved issues with circular dependencies
 * Updated objects namespaces to the new io.murano.* namespace
 * Resolved a few issues related to not included code from PoC
 * Renamed objects to more pythonic name (back to original actually)

Closes-bug: #1297146
Change-Id: I34641eca33c70908bd44b50f0956abda9d8dbfa7
2014-03-31 15:18:56 +04:00

38 lines
1.5 KiB
Python

# Copyright (c) 2014 Mirantis, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# 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.
class NamespaceResolver(object):
def __init__(self, namespaces):
self._namespaces = namespaces
self._namespaces[''] = ''
def resolve_name(self, name, relative=None):
if name is None:
raise ValueError()
if name and name.startswith(':'):
return name[1:]
if ':' in name:
parts = name.split(':')
if len(parts) != 2 or not parts[1]:
raise NameError('Incorrectly formatted name ' + name)
if parts[0] not in self._namespaces:
raise KeyError('Unknown namespace prefix ' + parts[0])
return '.'.join((self._namespaces[parts[0]], parts[1]))
if not relative and '=' in self._namespaces and '.' not in name:
return '.'.join((self._namespaces['='], name))
if relative and '.' not in name:
return '.'.join((relative, name))
return name