87 lines
3.0 KiB
Python
87 lines
3.0 KiB
Python
# Copyright (c) 2014 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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import os.path
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import sys
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from oslo_config import cfg
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import yaml
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from murano.dsl import class_loader
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from murano.dsl import exceptions
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from murano.dsl import murano_package
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from murano.engine.system import yaql_functions
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from murano.openstack.common import log as logging
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from murano.packages import exceptions as pkg_exceptions
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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class PackageClassLoader(class_loader.MuranoClassLoader):
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def __init__(self, package_loader):
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self.package_loader = package_loader
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self._class_packages = {}
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super(PackageClassLoader, self).__init__()
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def _get_package_for(self, class_name):
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package = self._class_packages.get(class_name, None)
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if package is None:
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package = self.package_loader.get_package_by_class(class_name)
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if package is not None:
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for cn in package.classes:
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self._class_packages[cn] = package
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return package
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def load_definition(self, name):
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try:
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package = self._get_package_for(name)
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if package is None:
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raise exceptions.NoPackageForClassFound(name)
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return package.get_class(name)
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# (sjmc7) This is used as a control condition for system classes;
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# do not delete (although I think it needs a better solution)
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except exceptions.NoPackageForClassFound:
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raise
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except Exception as e:
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msg = "Error loading {0}: {1}".format(name, str(e))
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raise pkg_exceptions.PackageLoadError(msg), None, sys.exc_info()[2]
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def load_package(self, name):
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package = murano_package.MuranoPackage()
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package.name = name
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return package
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def find_package_name(self, class_name):
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app_pkg = self._get_package_for(class_name)
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return None if app_pkg is None else app_pkg.full_name
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def create_root_context(self):
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context = super(PackageClassLoader, self).create_root_context()
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yaql_functions.register(context)
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return context
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def get_class_config(self, name):
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json_config = os.path.join(CONF.engine.class_configs, name + '.json')
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if os.path.exists(json_config):
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with open(json_config) as f:
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return json.load(f)
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yaml_config = os.path.join(CONF.engine.class_configs, name + '.yaml')
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if os.path.exists(yaml_config):
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with open(yaml_config) as f:
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return yaml.safe_load(f)
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return {}
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