b41739a63e
If there is some error during parsing template or env file, CSafeLoader errors doesn't contains snippet from template. So, we need to use SafeLoader for more informative error with snippet from parsed template. Change-Id: I79039164533c032db66c933c4e8882b8942961eb Related-bug: #1496361
66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
#
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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 yaml
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from heat.common.i18n import _
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from heat.common import template_format
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SECTIONS = (
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PARAMETERS, RESOURCE_REGISTRY, PARAMETER_DEFAULTS,
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ENCRYPTED_PARAM_NAMES
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) = (
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'parameters', 'resource_registry', 'parameter_defaults',
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'encrypted_param_names'
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)
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def parse(env_str):
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"""Takes a string and returns a dict containing the parsed structure."""
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if env_str is None:
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return {}
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try:
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env = template_format.yaml.load(env_str,
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Loader=template_format.yaml_loader)
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except yaml.YAMLError:
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# NOTE(prazumovsky): we need to return more informative error for
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# user, so use SafeLoader, which return error message with template
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# snippet where error has been occurred.
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try:
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env = yaml.load(env_str, Loader=yaml.SafeLoader)
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except yaml.YAMLError as yea:
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raise ValueError(yea)
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else:
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if env is None:
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env = {}
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if not isinstance(env, dict):
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raise ValueError(_('The environment is not a valid '
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'YAML mapping data type.'))
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for param in env:
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if param not in SECTIONS:
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raise ValueError(_('environment has wrong section "%s"') % param)
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return env
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def default_for_missing(env):
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"""Checks a parsed environment for missing sections."""
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for param in SECTIONS:
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if param not in env:
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if param == ENCRYPTED_PARAM_NAMES:
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env[param] = []
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else:
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env[param] = {}
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