90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
#
|
|
# 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.
|
|
|
|
import collections
|
|
import importlib
|
|
import logging
|
|
import os
|
|
|
|
from toscaparser.common.exception import ToscaExtAttributeError
|
|
from toscaparser.common.exception import ToscaExtImportError
|
|
|
|
log = logging.getLogger("tosca.model")
|
|
|
|
REQUIRED_ATTRIBUTES = ['VERSION', 'DEFS_FILE']
|
|
|
|
|
|
class ExtTools(object):
|
|
def __init__(self):
|
|
self.EXTENSION_INFO = self._load_extensions()
|
|
|
|
def _load_extensions(self):
|
|
'''Dynamically load all the extensions .'''
|
|
extensions = collections.OrderedDict()
|
|
|
|
# Use the absolute path of the class path
|
|
abs_path = os.path.dirname(os.path.abspath(__file__))
|
|
|
|
extdirs = [e for e in os.listdir(abs_path) if
|
|
not e.startswith('tests') and
|
|
os.path.isdir(os.path.join(abs_path, e))]
|
|
|
|
for e in extdirs:
|
|
log.info(e)
|
|
extpath = abs_path + '/' + e
|
|
# Grab all the extension files in the given path
|
|
ext_files = [f for f in os.listdir(extpath) if f.endswith('.py')
|
|
and not f.startswith('__init__')]
|
|
|
|
# For each module, pick out the target translation class
|
|
for f in ext_files:
|
|
log.info(f)
|
|
ext_name = 'toscaparser/extensions/' + e + '/' + f.strip('.py')
|
|
ext_name = ext_name.replace('/', '.')
|
|
try:
|
|
extinfo = importlib.import_module(ext_name)
|
|
version = getattr(extinfo, 'VERSION')
|
|
defs_file = extpath + '/' + getattr(extinfo, 'DEFS_FILE')
|
|
|
|
# Sections is an optional attribute
|
|
sections = getattr(extinfo, 'SECTIONS', ())
|
|
|
|
extensions[version] = {'sections': sections,
|
|
'defs_file': defs_file}
|
|
except ImportError:
|
|
raise ToscaExtImportError(ext_name=ext_name)
|
|
except AttributeError:
|
|
attrs = ', '.join(REQUIRED_ATTRIBUTES)
|
|
raise ToscaExtAttributeError(ext_name=ext_name,
|
|
attrs=attrs)
|
|
|
|
return extensions
|
|
|
|
def get_versions(self):
|
|
return sorted(self.EXTENSION_INFO.keys())
|
|
|
|
def get_sections(self):
|
|
sections = {}
|
|
for version in self.EXTENSION_INFO.keys():
|
|
sections[version] = self.EXTENSION_INFO[version]['sections']
|
|
|
|
return sections
|
|
|
|
def get_defs_file(self, version):
|
|
versiondata = self.EXTENSION_INFO.get(version)
|
|
|
|
if versiondata:
|
|
return versiondata.get('defs_file')
|
|
else:
|
|
return None
|