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58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
from abc import ABC, abstractmethod, abstractproperty
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from typing import Dict, Any
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import contextvars
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from esphome.types import ConfigFragmentType, ID, ConfigPathType
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import esphome.config_validation as cv
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class FinalValidateConfig(ABC):
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@abstractproperty
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def data(self) -> Dict[str, Any]:
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"""A dictionary that can be used by post validation functions to store
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global data during the validation phase. Each component should store its
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data under a unique key
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"""
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@abstractmethod
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def get_path_for_id(self, id: ID) -> ConfigPathType:
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"""Get the config path a given ID has been declared in.
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This is the location under the _validated_ config (for example, with cv.ensure_list applied)
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Raises KeyError if the id was not declared in the configuration.
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"""
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@abstractmethod
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def get_config_for_path(self, path: ConfigPathType) -> ConfigFragmentType:
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"""Get the config fragment for the given global path.
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Raises KeyError if a key in the path does not exist.
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"""
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FinalValidateConfig.register(dict)
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# Context variable tracking the full config for some final validation functions.
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full_config: contextvars.ContextVar[FinalValidateConfig] = contextvars.ContextVar(
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"full_config"
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)
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def id_declaration_match_schema(schema):
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"""A final-validation schema function that applies a schema to the outer config fragment of an
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ID declaration.
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This validator must be applied to ID values.
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"""
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if not isinstance(schema, cv.Schema):
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schema = cv.Schema(schema, extra=cv.ALLOW_EXTRA)
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def validator(value):
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fconf = full_config.get()
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path = fconf.get_path_for_id(value)[:-1]
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declaration_config = fconf.get_config_for_path(path)
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with cv.prepend_path([cv.ROOT_CONFIG_PATH] + path):
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return schema(declaration_config)
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return validator
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