Daniel Bedeleanu
ea49cd6e4a
- Create backend/services/image_storage.py with 4 core functions:
- sanitize_filename(): remove unsafe chars, limit to 255 chars, convert to lowercase
- get_unique_filename(): handle collisions with UUID suffix (format: {name}_{uuid8}_{variant}.jpg)
- ensure_image_directories(): create /images/ root and category subdirs on startup
- save_image(): save bytes to /images/{category}/{filename}, returns relative path
- Create comprehensive test suite (22 tests) covering all functionality
- Integrate ensure_image_directories() into FastAPI startup event
- Directory structure: /images/{category}/{filename}
- Collision handling: auto-suffix with UUID if filename exists
- All tests passing, pathlib.Path for safe operations
37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
from __future__ import annotations
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from collections.abc import Callable, Sequence
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from typing import Any, ParamSpec
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from starlette._utils import is_async_callable
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from starlette.concurrency import run_in_threadpool
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P = ParamSpec("P")
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class BackgroundTask:
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def __init__(self, func: Callable[P, Any], *args: P.args, **kwargs: P.kwargs) -> None:
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self.func = func
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self.args = args
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self.kwargs = kwargs
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self.is_async = is_async_callable(func)
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async def __call__(self) -> None:
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if self.is_async:
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await self.func(*self.args, **self.kwargs)
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else:
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await run_in_threadpool(self.func, *self.args, **self.kwargs)
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class BackgroundTasks(BackgroundTask):
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def __init__(self, tasks: Sequence[BackgroundTask] | None = None):
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self.tasks = list(tasks) if tasks else []
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def add_task(self, func: Callable[P, Any], *args: P.args, **kwargs: P.kwargs) -> None:
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task = BackgroundTask(func, *args, **kwargs)
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self.tasks.append(task)
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async def __call__(self) -> None:
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for task in self.tasks:
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await task()
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