Cloudflare R2 vs Backblaze B2

import boto3
from botocore.config import Config

# Cloudflare R2 Configuration
r2_client = boto3.client(
    's3',
    endpoint_url=f"https://{os.environ['CLOUDFLARE_ACCOUNT_ID']}.r2.cloudflarestorage.com",
    aws_access_key_id=os.environ['R2_ACCESS_KEY_ID'],
    aws_secret_access_key=os.environ['R2_SECRET_ACCESS_KEY'],
    config=Config(signature_version='s3v4')
)

# Backblaze B2 S3 Configuration
b2_client = boto3.client(
    's3',
    endpoint_url="https://s3.us-west-004.backblazeb2.com",
    aws_access_key_id=os.environ['B2_KEY_ID'],
    aws_secret_access_key=os.environ['B2_APPLICATION_KEY'],
    config=Config(signature_version='s3v4')
)

def upload_dataset_file(filepath: str, bucket_name: str, target: str = "r2"):
    """Seamless drop-in S3-compatible file upload to R2 or B2."""
    client = r2_client if target == "r2" else b2_client
    object_key = os.path.basename(filepath)
    client.upload_file(filepath, bucket_name, object_key)
    print(f"Successfully uploaded {object_key} to {target.upper()} bucket {bucket_name}")