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Diffstat (limited to 'onap-dcae-dcaepolicy-lib/onap_dcae_dcaepolicy_lib/utils.py')
| -rw-r--r-- | onap-dcae-dcaepolicy-lib/onap_dcae_dcaepolicy_lib/utils.py | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/onap-dcae-dcaepolicy-lib/onap_dcae_dcaepolicy_lib/utils.py b/onap-dcae-dcaepolicy-lib/onap_dcae_dcaepolicy_lib/utils.py deleted file mode 100644 index 7f12347..0000000 --- a/onap-dcae-dcaepolicy-lib/onap_dcae_dcaepolicy_lib/utils.py +++ /dev/null @@ -1,121 +0,0 @@ -# org.onap.dcae -# ================================================================================ -# Copyright (c) 2018 AT&T Intellectual Property. All rights reserved. -# ================================================================================ -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file 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. -# ============LICENSE_END========================================================= -# -# ECOMP is a trademark and service mark of AT&T Intellectual Property. - -"""generic utils to be used by dcae_policy decorators for the policy lifecycle in cloudify""" - -from copy import deepcopy -from decimal import Decimal, DecimalException - -FIELD_NAME_DELIMITER = ":" -FIELD_TYPE_DELIMITER = "::" -FIELD_TYPE_NUMBER = "number" -KEYWORD_DESC = "desc" -KEYWORD_NULLS_LAST = "nulls-last" - -class Utils(object): - """generic static class used for policy operations""" - - @staticmethod - def remove_empties(any_list): - """returns the any_list without empty elements""" - return [element for element in any_list or [] if element] - - @staticmethod - def get_field_value(parent, field_path, field_type=None): - """ - Find and return the field :field_path: under :parent: - - Optionally, converts the field value to field_type. - - Parser of the :field_path: is using the delimiter ":" (semicolon) - - Example: - parent = ctx.node.properties - field_path = "docker_config:policy:apply_order" - - will return the value of the apply_order field under the ctx.node.properties in - - properties: - docker_config: - policy: - apply_order - """ - if not parent or not field_path or not isinstance(parent, dict): - return - - field_path = Utils.remove_empties([ - path.strip() for path in field_path.split(FIELD_NAME_DELIMITER) - ]) - - if not field_path: - return - - field_value = None - field_idx = len(field_path) - 1 - for (idx, field_name) in enumerate(field_path): - parent = parent.get(field_name) - if idx == field_idx: - field_value = deepcopy(parent) - if field_type in [FIELD_TYPE_NUMBER] and isinstance(field_value, (str, unicode)): - try: - field_value = Decimal(field_value) - except DecimalException: - pass - elif not parent or not isinstance(parent, dict): - return - return field_value - - @staticmethod - def parse_clause_item(clause_item): - """ - Parses: the :clause_item: in policy_apply_order_clause - and returns (field_path, field_type, reverse, nulls_last) - - delimiters: are whitespaces, "::" - - nulls-first is the default sorting order - - :clause_item: format is <field_path> [:: <field_type>] [desc] [nulls-last] - - Examples: "config:db_client" versus "config:foo desc" versus - "matchingConditions:priority::number desc nulls-last" - """ - field_path = field_type = desc = nulls_last = None - - if not clause_item or not isinstance(clause_item, (str, unicode)): - return field_path, field_type, bool(desc), bool(nulls_last) - - for idx, token in enumerate(clause_item.split()): - if idx == 0: - split_for_type = token.split(FIELD_TYPE_DELIMITER) - field_path = split_for_type[0] - field_type = split_for_type[1] if len(split_for_type) > 1 else None - elif token == KEYWORD_DESC: - desc = True - elif token == KEYWORD_NULLS_LAST: - nulls_last = True - return field_path, field_type, bool(desc), bool(nulls_last) - - @staticmethod - def key_with_none_in_sort(reverse, nulls_last, value): - """ - constructs tuple for proper placement of None values (last versus first) - in the sorted list of values regardless of the :reverse: - """ - return reverse == nulls_last or value is None, value |