mirror of
https://github.com/microsoft/semantic-kernel.git
synced 2026-10-12 11:19:56 +00:00
Eduard van Valkenburg
12851923bc
### Motivation and Context <!-- Thank you for your contribution to the semantic-kernel repo! Please help reviewers and future users, providing the following information: 1. Why is this change required? 2. What problem does it solve? 3. What scenario does it contribute to? 4. If it fixes an open issue, please link to the issue here. --> I've always hated having to add the .create to a settings object, this removes that, you can just use the regular init, added benefit is that it has the proper fields in the docstrings for each implemented settings object! ### Description <!-- Describe your changes, the overall approach, the underlying design. These notes will help understanding how your code works. Thanks! --> Adds a __new__ method to the base settings class, which takes the prefix and if supplied the env_file and encoding, then calls model_rebuild and then the init. ### Contribution Checklist <!-- Before submitting this PR, please make sure: --> - [x] The code builds clean without any errors or warnings - [x] The PR follows the [SK Contribution Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md) and the [pre-submission formatting script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts) raises no violations - [x] All unit tests pass, and I have added new tests where possible - [x] I didn't break anyone 😄
84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
# Copyright (c) Microsoft. All rights reserved.
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import logging
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from typing import Annotated, Any, ClassVar, TypeVar
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from pydantic import BaseModel, ConfigDict, Field, UrlConstraints
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from pydantic.networks import AnyUrl
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from pydantic_settings import BaseSettings, SettingsConfigDict
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HttpsUrl = Annotated[AnyUrl, UrlConstraints(max_length=2083, allowed_schemes=["https"])]
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logger = logging.getLogger("semantic_kernel")
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class KernelBaseModel(BaseModel):
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"""Base class for all pydantic models in the SK."""
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model_config = ConfigDict(populate_by_name=True, arbitrary_types_allowed=True, validate_assignment=True)
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T = TypeVar("T", bound="KernelBaseSettings")
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class KernelBaseSettings(BaseSettings):
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"""Base class for all settings classes in the SK.
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A subclass creates it's fields and overrides the env_prefix class variable
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with the prefix for the environment variables.
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In the case where a value is specified for the same Settings field in multiple ways,
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the selected value is determined as follows (in descending order of priority):
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- Arguments passed to the Settings class initializer.
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- Environment variables, e.g. my_prefix_special_function as described above.
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- Variables loaded from a dotenv (.env) file.
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- Variables loaded from the secrets directory.
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- The default field values for the Settings model.
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"""
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env_prefix: ClassVar[str] = ""
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env_file_path: str | None = Field(default=None, exclude=True)
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env_file_encoding: str | None = Field(default="utf-8", exclude=True)
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model_config = SettingsConfigDict(
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extra="ignore",
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case_sensitive=False,
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)
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def __init__(
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self,
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**kwargs: Any,
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) -> None:
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"""Initialize the settings class."""
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# Remove any None values from the kwargs so that defaults are used.
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kwargs = {k: v for k, v in kwargs.items() if v is not None}
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super().__init__(**kwargs)
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def __new__(cls: type["T"], *args: Any, **kwargs: Any) -> "T":
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"""Override the __new__ method to set the env_prefix."""
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# for both, if supplied but None, set to default
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if "env_file_encoding" in kwargs and kwargs["env_file_encoding"] is not None:
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env_file_encoding = kwargs["env_file_encoding"]
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else:
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env_file_encoding = "utf-8"
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if "env_file_path" in kwargs and kwargs["env_file_path"] is not None:
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env_file_path = kwargs["env_file_path"]
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else:
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env_file_path = ".env"
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cls.model_config.update( # type: ignore
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env_prefix=cls.env_prefix,
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env_file=env_file_path,
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env_file_encoding=env_file_encoding,
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)
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cls.model_rebuild()
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return super().__new__(cls)
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@classmethod
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def create(cls: type["T"], **data: Any) -> "T":
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"""Update the model_config with the prefix."""
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logger.warning(
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"The create method is deprecated. Use the __new__ method instead.",
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)
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return cls(**data)
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