100 lines
3.5 KiB
Python
100 lines
3.5 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"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import os
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import sys
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import yaml
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import murano.packages.application_package
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from murano.packages import exceptions
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class MuranoPlPackage(murano.packages.application_package.ApplicationPackage):
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def __init__(self, source_directory, manifest, loader):
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super(MuranoPlPackage, self).__init__(
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source_directory, manifest, loader)
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self._classes = None
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self._ui = None
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self._ui_cache = None
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self._raw_ui_cache = None
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self._classes_cache = {}
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@property
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def classes(self):
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return tuple(self._classes.keys())
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@property
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def ui(self):
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if not self._ui_cache:
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self._load_ui(True)
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return self._ui_cache
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@property
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def raw_ui(self):
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if not self._raw_ui_cache:
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self._load_ui(False)
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return self._raw_ui_cache
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def get_class(self, name):
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if name not in self._classes_cache:
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self._load_class(name)
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return self._classes_cache[name]
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# Private methods
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def _load_ui(self, load_yaml=False):
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if self._raw_ui_cache and load_yaml:
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self._ui_cache = yaml.load(self._raw_ui_cache, self.yaml_loader)
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else:
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ui_file = self._ui
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full_path = os.path.join(self._source_directory, 'UI', ui_file)
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if not os.path.isfile(full_path):
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self._raw_ui_cache = None
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self._ui_cache = None
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return
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try:
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with open(full_path) as stream:
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self._raw_ui_cache = stream.read()
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if load_yaml:
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self._ui_cache = yaml.load(self._raw_ui_cache,
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self.yaml_loader)
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except Exception as ex:
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trace = sys.exc_info()[2]
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raise exceptions.PackageUILoadError(str(ex)), None, trace
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def _load_class(self, name):
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if name not in self._classes:
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raise exceptions.PackageClassLoadError(
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name, 'Class not defined in this package')
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def_file = self._classes[name]
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full_path = os.path.join(self._source_directory, 'Classes', def_file)
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if not os.path.isfile(full_path):
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raise exceptions.PackageClassLoadError(
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name, 'File with class definition not found')
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try:
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with open(full_path) as stream:
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self._classes_cache[name] = yaml.load(stream, self.yaml_loader)
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except Exception as ex:
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trace = sys.exc_info()[2]
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msg = 'Unable to load class definition due to "{0}"'.format(
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str(ex))
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raise exceptions.PackageClassLoadError(name, msg), None, trace
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def validate(self):
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self._classes_cache.clear()
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for class_name in self._classes:
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self.get_class(class_name)
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self._load_ui(True)
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super(MuranoPlPackage, self).validate()
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