150aed4910
Adds support for package type classes in plugins. As a result additional package types may be introduced without changes to Murano source code Implements-Blueprint: pluggable-package-types Change-Id: I61c400b7be4c8836825c00ce7ca7d1b8501d0bd4
106 lines
3.7 KiB
Python
106 lines
3.7 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 contextlib
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import os
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import shutil
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import sys
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import tempfile
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import zipfile
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import yaml
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from murano.common.plugins import package_types_loader
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import murano.packages.exceptions as e
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import murano.packages.hot_package
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import murano.packages.mpl_package
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PLUGIN_LOADER = None
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def get_plugin_loader():
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global PLUGIN_LOADER
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if PLUGIN_LOADER is None:
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PLUGIN_LOADER = package_types_loader.PluginLoader()
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for runtime_version in ('1.0', '1.1', '1.2'):
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format_string = 'MuranoPL/' + runtime_version
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PLUGIN_LOADER.register_format(
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format_string, murano.packages.mpl_package.MuranoPlPackage)
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PLUGIN_LOADER.register_format(
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'Heat.HOT/1.0', murano.packages.hot_package.HotPackage)
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return PLUGIN_LOADER
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@contextlib.contextmanager
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def load_from_file(archive_path, target_dir=None, drop_dir=False):
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if not os.path.isfile(archive_path):
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raise e.PackageLoadError('Unable to find package file')
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created = False
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if not target_dir:
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target_dir = tempfile.mkdtemp()
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created = True
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elif not os.path.exists(target_dir):
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os.mkdir(target_dir)
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created = True
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else:
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if os.listdir(target_dir):
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raise e.PackageLoadError('Target directory is not empty')
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try:
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if not zipfile.is_zipfile(archive_path):
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raise e.PackageFormatError("Uploaded file {0} is not a "
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"zip archive".format(archive_path))
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package = zipfile.ZipFile(archive_path)
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package.extractall(path=target_dir)
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yield load_from_dir(target_dir)
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except ValueError as err:
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raise e.PackageLoadError("Couldn't load package from file: "
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"{0}".format(err))
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finally:
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if drop_dir:
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if created:
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shutil.rmtree(target_dir)
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else:
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for f in os.listdir(target_dir):
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os.unlink(os.path.join(target_dir, f))
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def load_from_dir(source_directory, filename='manifest.yaml'):
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if not os.path.isdir(source_directory) or not os.path.exists(
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source_directory):
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raise e.PackageLoadError('Invalid package directory')
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full_path = os.path.join(source_directory, filename)
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if not os.path.isfile(full_path):
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raise e.PackageLoadError('Unable to find package manifest')
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try:
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with open(full_path) as stream:
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content = yaml.safe_load(stream)
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except Exception as ex:
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trace = sys.exc_info()[2]
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raise e.PackageLoadError(
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"Unable to load due to '{0}'".format(str(ex))), None, trace
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if content:
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format_spec = str(content.get('Format') or 'MuranoPL/1.0')
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if format_spec[0].isdigit():
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format_spec = 'MuranoPL/' + format_spec
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plugin_loader = get_plugin_loader()
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handler = plugin_loader.get_package_handler(format_spec)
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if handler is None:
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raise e.PackageFormatError(
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'Unsupported format {0}'.format(format_spec))
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return handler(source_directory, content)
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