49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
# Copyright (C) 2015 Catalyst IT Ltd
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#
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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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from copy import deepcopy
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def dict_merge(a, b):
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"""
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Recursively merges two dicts.
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If both a and b have a key who's value is a dict then dict_merge is called
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on both values and the result stored in the returned dictionary.
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B is the override.
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"""
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if not isinstance(b, dict):
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return b
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result = deepcopy(a)
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for k, v in b.items():
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if k in result and isinstance(result[k], dict):
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result[k] = dict_merge(result[k], v)
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else:
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result[k] = deepcopy(v)
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return result
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def setup_task_settings(task_defaults, action_defaults, task_settings):
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"""
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Cascading merge of the default settings, and the
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settings for each task_type.
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"""
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new_task_settings = {}
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for task, settings in task_settings.items():
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task_setting = deepcopy(task_defaults)
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task_setting['action_settings'] = deepcopy(action_defaults)
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new_task_settings[task] = dict_merge(task_setting, settings)
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return new_task_settings
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