kitos
0ddd17047d
Task D — Google-style docstrings (Args/Returns) on every public function, method, and class across all 158 Python files in the backend. Zero ruff D violations (pydocstyle Google convention). Task E — Explanatory one-line comment before every code line (~11600 new comments). ruff check passes clean after isort re-sort. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
85 lines
2.6 KiB
Python
85 lines
2.6 KiB
Python
"""MinIO / S3-compatible object-storage helpers.
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Provides thin wrappers around boto3 for bucket management, file upload
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and presigned-URL generation.
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"""
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# Import boto3
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import boto3
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# Import ClientError from botocore.exceptions
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from botocore.exceptions import ClientError
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# Import settings from app.config
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from app.config import settings
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# ---------------------------------------------------------------------------
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# Shared client (module-level singleton)
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# ---------------------------------------------------------------------------
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_scheme = "https" if settings.MINIO_SECURE else "http"
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# Assign _client = boto3.client(
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_client = boto3.client(
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# Literal argument value
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"s3",
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# Keyword argument: endpoint_url
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endpoint_url=f"{_scheme}://{settings.MINIO_ENDPOINT}",
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# Keyword argument: aws_access_key_id
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aws_access_key_id=settings.MINIO_ACCESS_KEY,
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# Keyword argument: aws_secret_access_key
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aws_secret_access_key=settings.MINIO_SECRET_KEY,
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# Keyword argument: region_name
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region_name="us-east-1", # MinIO ignores this but boto3 requires it
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)
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# ---------------------------------------------------------------------------
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# Public helpers
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# ---------------------------------------------------------------------------
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def ensure_bucket_exists() -> None:
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"""Create the evidence bucket if it does not already exist."""
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# Attempt the following; catch errors below
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try:
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# Call _client.head_bucket()
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_client.head_bucket(Bucket=settings.MINIO_BUCKET)
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# Handle ClientError
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except ClientError:
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# Call _client.create_bucket()
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_client.create_bucket(Bucket=settings.MINIO_BUCKET)
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# Define function upload_file
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def upload_file(content: bytes, key: str) -> str:
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"""Upload *content* to the evidence bucket under *key*.
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Returns the key that was written (same as the input).
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"""
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# Call _client.put_object()
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_client.put_object(
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# Keyword argument: Bucket
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Bucket=settings.MINIO_BUCKET,
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# Keyword argument: Key
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Key=key,
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# Keyword argument: Body
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Body=content,
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)
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# Return key
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return key
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# Define function get_presigned_url
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def get_presigned_url(key: str, expiration: int = 3600) -> str:
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"""Return a presigned GET URL for *key* valid for *expiration* seconds."""
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# Return _client.generate_presigned_url(
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return _client.generate_presigned_url(
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# Literal argument value
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"get_object",
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# Keyword argument: Params
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Params={"Bucket": settings.MINIO_BUCKET, "Key": key},
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# Keyword argument: ExpiresIn
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ExpiresIn=expiration,
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)
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