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__init__.py
# Copyright The OpenTelemetry Authors # # 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. from logging import getLogger from re import compile from types import MappingProxyType from typing import Mapping, Optional from mysql.opentelemetry.context import create_key, get_value, set_value from mysql.opentelemetry.context.context import Context from mysql.opentelemetry.util.re import ( _BAGGAGE_PROPERTY_FORMAT, _KEY_FORMAT, _VALUE_FORMAT, ) _BAGGAGE_KEY = create_key("baggage") _logger = getLogger(__name__) _KEY_PATTERN = compile(_KEY_FORMAT) _VALUE_PATTERN = compile(_VALUE_FORMAT) _PROPERT_PATTERN = compile(_BAGGAGE_PROPERTY_FORMAT) def get_all( context: Optional[Context] = None, ) -> Mapping[str, object]: """Returns the name/value pairs in the Baggage Args: context: The Context to use. If not set, uses current Context Returns: The name/value pairs in the Baggage """ baggage = get_value(_BAGGAGE_KEY, context=context) if isinstance(baggage, dict): return MappingProxyType(baggage) return MappingProxyType({}) def get_baggage(name: str, context: Optional[Context] = None) -> Optional[object]: """Provides access to the value for a name/value pair in the Baggage Args: name: The name of the value to retrieve context: The Context to use. If not set, uses current Context Returns: The value associated with the given name, or null if the given name is not present. """ return get_all(context=context).get(name) def set_baggage(name: str, value: object, context: Optional[Context] = None) -> Context: """Sets a value in the Baggage Args: name: The name of the value to set value: The value to set context: The Context to use. If not set, uses current Context Returns: A Context with the value updated """ baggage = dict(get_all(context=context)) baggage[name] = value return set_value(_BAGGAGE_KEY, baggage, context=context) def remove_baggage(name: str, context: Optional[Context] = None) -> Context: """Removes a value from the Baggage Args: name: The name of the value to remove context: The Context to use. If not set, uses current Context Returns: A Context with the name/value removed """ baggage = dict(get_all(context=context)) baggage.pop(name, None) return set_value(_BAGGAGE_KEY, baggage, context=context) def clear(context: Optional[Context] = None) -> Context: """Removes all values from the Baggage Args: context: The Context to use. If not set, uses current Context Returns: A Context with all baggage entries removed """ return set_value(_BAGGAGE_KEY, {}, context=context) def _is_valid_key(name: str) -> bool: return _KEY_PATTERN.fullmatch(str(name)) is not None def _is_valid_value(value: object) -> bool: parts = str(value).split(";") is_valid_value = _VALUE_PATTERN.fullmatch(parts[0]) is not None if len(parts) > 1: # one or more properties metadata for property in parts[1:]: if _PROPERT_PATTERN.fullmatch(property) is None: is_valid_value = False break return is_valid_value def _is_valid_pair(key: str, value: str) -> bool: return _is_valid_key(key) and _is_valid_value(value)