How to Build a Multi-Cloud Config Loader with Provider Switching in Python

import json
from pathlib import Path
from dataclasses import dataclass
from typing import Dict, Any


@dataclass
class CloudConfig:
    provider: str
    region: str
    settings: Dict[str, Any]


class ConfigLoader:
    def __init__(self, config_dir: str = "configs"):
        self.config_dir = Path(config_dir)
        self._providers = {
            "aws": self._load_aws,
            "azure": self._load_azure,
            "gcp": self._load_gcp,
        }

    def _load_aws(self, data: Dict[str, Any]) -> CloudConfig:
        return CloudConfig(
            provider="aws",
            region=data.get("region", "us-east-1"),
            settings={"access_key": data.get("access_key"), "bucket": data.get("bucket")},
        )

    def _load_azure(self, data: Dict[str, Any]) -> CloudConfig:
        return CloudConfig(
            provider="azure",
            region=data.get("location", "eastus"),
            settings={"subscription_id": data.get("subscription_id"), "resource_group": data.get("resource_group")},
        )

    def _load_gcp(self, data: Dict[str, Any]) -> CloudConfig:
        return CloudConfig(
            provider="gcp",
            region=data.get("zone", "us-central1-a"),
            settings={"project_id": data.get("project_id"), "cluster": data.get("cluster")},
        )

    def load(self, provider: str) -> CloudConfig:
        if provider not in self._providers:
            raise ValueError(f"Unsupported provider: {provider}")
        file_path = self.config_dir / f"{provider}.json"
        with open(file_path) as f:
            data = json.load(f)
        return self._providers[provider](data)


if __name__ == "__main__":
    loader = ConfigLoader()
    for provider in ["aws", "azure", "gcp"]:
        config = loader.load(provider)
        print(f"{config.provider}: {config.region} | {config.settings}")