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# -*- coding: utf8 -*-
# ============LICENSE_START=======================================================
# org.onap.vvp/validation-scripts
# ===================================================================
# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
# ===================================================================
#
# Unless otherwise specified, all software contained herein is licensed
# under the Apache License, Version 2.0 (the "License");
# you may not use this software except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
#
# Unless otherwise specified, all documentation contained herein is licensed
# under the Creative Commons License, Attribution 4.0 Intl. (the "License");
# you may not use this documentation except in compliance with the License.
# You may obtain a copy of the License at
#
# https://creativecommons.org/licenses/by/4.0/
#
# Unless required by applicable law or agreed to in writing, documentation
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# ============LICENSE_END============================================
#
#
from yaml.constructor import ConstructorError
from yaml.nodes import MappingNode
try:
from yaml import CLoader as SafeLoader
except ImportError:
from yaml import SafeLoader
class UniqueKeyLoader(SafeLoader):
def construct_mapping(self, node, deep=False):
if not isinstance(node, MappingNode):
raise ConstructorError(
None,
None,
"expected a mapping node, but found %s" % node.id,
node.start_mark,
)
mapping = {}
for key_node, value_node in node.value:
key = self.construct_object(key_node, deep=deep)
try:
hash(key)
except TypeError as exc:
raise ConstructorError(
"while constructing a mapping",
node.start_mark,
"found unacceptable key (%s)" % exc,
key_node.start_mark,
)
# check for duplicate keys
if key in mapping:
raise ConstructorError(
"while constructing a mapping",
node.start_mark,
"found duplicate key",
key_node.start_mark,
)
value = self.construct_object(value_node, deep=deep)
mapping[key] = value
return mapping
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