9a9f3436e1
* Refactoring of "packages" Python package * Now MuranoPL YAML classes can be parsed by different engines depending on Format string in package manifest With this change MuranoPL classes will no longer be read and parsed (including YAQL expressions parsing) upon package load but only on first class access and with ability to peak different parsers depending on format version specified in manifest. As a consequence it is now possible to use different YAQL engines for different package format versions. Also startup time was greatly improved as unneeded classes are no more parsed and logos and UI forms are not loaded. Partially implements: blueprint murano-versioning Change-Id: I23fc5da1a43b405d526438329dc04aed589dee13
128 lines
3.1 KiB
Python
128 lines
3.1 KiB
Python
# Copyright (c) 2015 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 abc
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import io
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import os
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import zipfile
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import six
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class PackageType(object):
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Library = 'Library'
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Application = 'Application'
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ALL = [Library, Application]
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@six.add_metaclass(abc.ABCMeta)
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class Package(object):
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def __init__(self, source_directory, package_format, runtime_version):
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self._source_directory = source_directory
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self._format = package_format
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self._runtime_version = runtime_version
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self._blob_cache = None
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@property
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def format(self):
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return self._format
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@abc.abstractproperty
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def full_name(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def version(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def classes(self):
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raise NotImplementedError()
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@property
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def runtime_version(self):
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return self._runtime_version
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@abc.abstractproperty
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def requirements(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def package_type(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def display_name(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def description(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def author(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def supplier(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def tags(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def logo(self):
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raise NotImplementedError()
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@abc.abstractproperty
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def supplier_logo(self):
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raise NotImplementedError()
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@property
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def blob(self):
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if not self._blob_cache:
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self._blob_cache = _pack_dir(self._source_directory)
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return self._blob_cache
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@abc.abstractmethod
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def get_class(self, name):
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raise NotImplementedError()
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@abc.abstractmethod
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def get_resource(self, name):
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raise NotImplementedError()
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@abc.abstractproperty
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def ui(self):
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raise NotImplementedError()
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def _zip_dir(path, zip_file):
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for root, dirs, files in os.walk(path):
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for f in files:
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abs_path = os.path.join(root, f)
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relative_path = os.path.relpath(abs_path, path)
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zip_file.write(abs_path, relative_path)
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def _pack_dir(source_directory):
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blob = io.BytesIO()
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zip_file = zipfile.ZipFile(blob, mode='w')
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_zip_dir(source_directory, zip_file)
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zip_file.close()
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return blob.getvalue()
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