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# Licensed to the StackStorm, Inc ('StackStorm') under one or more |
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# contributor license agreements. See the NOTICE file distributed with |
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# this work for additional information regarding copyright ownership. |
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# The ASF licenses this file to You under the Apache License, Version 2.0 |
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# (the "License"); you may not use this file except in compliance with |
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# the License. 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 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 os |
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import re |
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import jsonschema |
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from st2common.util import schema as util_schema |
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from st2common.constants.pack import MANIFEST_FILE_NAME |
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from st2common.constants.pack import PACK_REF_WHITELIST_REGEX |
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from st2common.content.loader import MetaLoader |
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__all__ = [ |
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'get_pack_ref_from_metadata', |
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'get_pack_metadata', |
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'validate_config_against_schema', |
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'normalize_pack_version' |
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] |
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def get_pack_ref_from_metadata(metadata, pack_directory_name=None): |
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""" |
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Utility function which retrieves pack "ref" attribute from the pack metadata file. |
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If this attribute is not provided, an attempt is made to infer "ref" from the "name" attribute. |
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:rtype: ``str`` |
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""" |
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pack_ref = None |
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# The rules for the pack ref are as follows: |
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# 1. If ref attribute is available, we used that |
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# 2. If pack_directory_name is available we use that (this only applies to packs |
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# which are in sub-directories) |
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# 2. If attribute is not available, but pack name is and pack name meets the valid name |
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# criteria, we use that |
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if metadata.get('ref', None): |
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pack_ref = metadata['ref'] |
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elif pack_directory_name and re.match(PACK_REF_WHITELIST_REGEX, pack_directory_name): |
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pack_ref = pack_directory_name |
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else: |
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if re.match(PACK_REF_WHITELIST_REGEX, metadata['name']): |
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pack_ref = metadata['name'] |
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else: |
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raise ValueError('Pack name "%s" contains invalid characters and "ref" ' |
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'attribute is not available' % (metadata['name'])) |
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return pack_ref |
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def get_pack_metadata(pack_dir): |
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""" |
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Return parsed metadata for a particular pack directory. |
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:rtype: ``dict`` |
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""" |
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manifest_path = os.path.join(pack_dir, MANIFEST_FILE_NAME) |
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if not os.path.isfile(manifest_path): |
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raise ValueError('Pack "%s" is missing %s file' % (pack_dir, MANIFEST_FILE_NAME)) |
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meta_loader = MetaLoader() |
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content = meta_loader.load(manifest_path) |
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if not content: |
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raise ValueError('Pack "%s" metadata file is empty' % (pack_dir)) |
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return content |
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def validate_config_against_schema(config_schema, config_object, config_path, |
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pack_name=None): |
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""" |
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Validate provided config dictionary against the provided config schema |
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dictionary. |
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""" |
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pack_name = pack_name or 'unknown' |
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schema = util_schema.get_schema_for_resource_parameters(parameters_schema=config_schema, |
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allow_additional_properties=True) |
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instance = config_object |
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try: |
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cleaned = util_schema.validate(instance=instance, schema=schema, |
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cls=util_schema.CustomValidator, use_default=True, |
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allow_default_none=True) |
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except jsonschema.ValidationError as e: |
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attribute = getattr(e, 'path', []) |
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attribute = '.'.join(attribute) |
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msg = ('Failed validating attribute "%s" in config for pack "%s" (%s): %s' % |
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(attribute, pack_name, config_path, str(e))) |
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raise jsonschema.ValidationError(msg) |
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return cleaned |
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def normalize_pack_version(version): |
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""" |
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Normalize old, pre StackStorm v2.1 non valid semver version string (e.g. 0.2) to a valid |
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semver version string (0.2.0). |
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:rtype: ``str`` |
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""" |
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version = str(version) |
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version_seperator_count = version.count('.') |
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if version_seperator_count == 1: |
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version = version + '.0' |
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return version |
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Plexxi /
st2
