139 lines
3.8 KiB
Python
139 lines
3.8 KiB
Python
# Copyright 2023 - NetCracker Technology Corp.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# 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 copy
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import hashlib
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from oslo_config import cfg
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VERSIONS_KEY = "__versions"
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def clear_versions(ctx):
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if VERSIONS_KEY in ctx:
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del ctx[VERSIONS_KEY]
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def get_in_context_with_versions(task_ex):
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in_context = task_ex.in_context if task_ex.in_context else {}
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if not cfg.CONF.context_versioning.enabled:
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return in_context
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in_context = (copy.deepcopy(dict(in_context)))
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task_published = task_ex.published or []
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in_context.setdefault(VERSIONS_KEY, {})
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updated_keys = _get_updated_keys(task_published)
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for updated in updated_keys:
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in_context[VERSIONS_KEY].setdefault(updated, 0)
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in_context[VERSIONS_KEY][updated] += 1
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return in_context
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def _get_updated_keys(published):
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updated_keys = []
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_get_published_keys_recursively(updated_keys, published)
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return updated_keys
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def _get_published_keys_recursively(updated_keys, published, prefix=None):
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for key in published:
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new_prefix = key if not prefix else prefix + "." + key
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if not isinstance(published[key], dict):
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if cfg.CONF.context_versioning.hash_version_keys:
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new_prefix = hashlib.md5(
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new_prefix.encode("utf-8")
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).hexdigest()
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updated_keys.append(new_prefix)
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else:
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_get_published_keys_recursively(
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updated_keys,
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published[key],
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new_prefix
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)
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def merge_context_by_version(ctx_left, ctx_right):
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versions_left = copy.copy(ctx_left[VERSIONS_KEY])
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versions_right = copy.copy(ctx_right[VERSIONS_KEY])
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_remove_internal_data_from_context(ctx_left)
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_remove_internal_data_from_context(ctx_right)
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result = _merge_ctx(ctx_left, versions_left, ctx_right, versions_right)
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result[VERSIONS_KEY] = _merge_versions(versions_left, versions_right)
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return result
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def _get_version(key, versions):
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if key not in versions:
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return 0
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return versions[key]
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def _merge_ctx(ctx_left, ver_left, ctx_right, ver_right, prefix=None):
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if ctx_left is None:
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return ctx_right
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if ctx_right is None:
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return ctx_left
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for k, v in ctx_right.items():
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if k not in ctx_left:
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ctx_left[k] = v
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else:
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left_v = ctx_left[k]
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new_prefix = k if not prefix else prefix + "." + k
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if isinstance(left_v, dict) and isinstance(v, dict):
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_merge_ctx(left_v, ver_left, v, ver_right, new_prefix)
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else:
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if cfg.CONF.context_versioning.hash_version_keys:
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new_prefix = hashlib.md5(
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new_prefix.encode("utf-8")
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).hexdigest()
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l_ver = _get_version(new_prefix, ver_left)
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r_ver = _get_version(new_prefix, ver_right)
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if r_ver > l_ver:
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ctx_left[k] = v
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return ctx_left
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def _merge_versions(ver_left, ver_right):
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for key in ver_right:
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if key not in ver_left:
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ver_left[key] = ver_right[key]
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ver_left[key] = max(ver_left[key], ver_right[key])
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return ver_left
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def _remove_internal_data_from_context(ctx):
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if '__task_execution' in ctx:
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del ctx['__task_execution']
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del ctx[VERSIONS_KEY]
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