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Running on Zero
Running on Zero
deveshc23
fix: Add Python 3.10 StrEnum backward compatibility and set python_version 3.11 in README
b277794 | """Validated, secret-free runtime configuration.""" | |
| from __future__ import annotations | |
| import os | |
| from collections.abc import Mapping | |
| from dataclasses import dataclass | |
| try: | |
| from enum import StrEnum | |
| except ImportError: | |
| from enum import Enum | |
| class StrEnum(str, Enum): # noqa: UP042 | |
| def __str__(self) -> str: | |
| return str(self.value) | |
| class ConfigurationError(ValueError): | |
| """Raised when non-secret runtime configuration is unsafe or invalid.""" | |
| class Environment(StrEnum): | |
| DEVELOPMENT = "development" | |
| RESEARCH = "research" | |
| PAPER = "paper" | |
| PRODUCTION = "production" | |
| class LogLevel(StrEnum): | |
| DEBUG = "DEBUG" | |
| INFO = "INFO" | |
| WARNING = "WARNING" | |
| ERROR = "ERROR" | |
| class Settings: | |
| """Non-secret process configuration. | |
| Credentials are intentionally absent. Provider adapters receive secrets from a | |
| dedicated future secret-provider boundary, not from this general settings object. | |
| """ | |
| environment: Environment | |
| log_level: LogLevel | |
| def is_production(self) -> bool: | |
| return self.environment is Environment.PRODUCTION | |
| def load_settings(environ: Mapping[str, str] | None = None) -> Settings: | |
| """Load and validate supported non-secret environment variables.""" | |
| source = os.environ if environ is None else environ | |
| environment_value = source.get("DRIFT_ENVIRONMENT", Environment.DEVELOPMENT.value).lower() | |
| log_level_value = source.get("DRIFT_LOG_LEVEL", LogLevel.INFO.value).upper() | |
| try: | |
| environment = Environment(environment_value) | |
| except ValueError as exc: | |
| valid_values = ", ".join(member.value for member in Environment) | |
| raise ConfigurationError(f"DRIFT_ENVIRONMENT must be one of: {valid_values}.") from exc | |
| try: | |
| log_level = LogLevel(log_level_value) | |
| except ValueError as exc: | |
| valid_values = ", ".join(member.value for member in LogLevel) | |
| raise ConfigurationError(f"DRIFT_LOG_LEVEL must be one of: {valid_values}.") from exc | |
| return Settings(environment=environment, log_level=log_level) | |