jonathanzhan1975
af52cf674a
Streamlit/Tornado switches the asyncio policy to WindowsSelectorEventLoopPolicy on Windows, which breaks Playwright subprocess creation. Fixed by using an explicit ProactorEventLoop on Windows, and tracking the event loop per browser instance to detect cross-loop reuse.
63 lines
2.2 KiB
Python
63 lines
2.2 KiB
Python
# Copyright (C) 2025 AIDC-AI
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Async helper functions for web UI
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"""
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import asyncio
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import sys
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import tomllib
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from pathlib import Path
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from loguru import logger
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def run_async(coro):
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"""Run async coroutine in sync context"""
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if sys.platform == "win32":
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# Streamlit/Tornado may switch the global asyncio policy to
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# WindowsSelectorEventLoopPolicy, which breaks subprocess-based
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# libraries such as Playwright on Windows. Use an explicit
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# Proactor loop here so this sync bridge does not depend on the
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# ambient global policy.
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loop = asyncio.ProactorEventLoop()
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try:
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return loop.run_until_complete(coro)
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finally:
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try:
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from pixelle_video.services.frame_html import HTMLFrameGenerator
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loop.run_until_complete(HTMLFrameGenerator.close_browser())
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except Exception as e:
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logger.debug(f"Failed to cleanup HTML frame browser before loop close: {e}")
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loop.close()
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return asyncio.run(coro)
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def get_project_version():
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"""Get project version from pyproject.toml"""
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try:
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# Get project root (web parent directory)
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web_dir = Path(__file__).resolve().parent.parent
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project_root = web_dir.parent
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pyproject_path = project_root / "pyproject.toml"
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if pyproject_path.exists():
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with open(pyproject_path, "rb") as f:
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pyproject_data = tomllib.load(f)
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return pyproject_data.get("project", {}).get("version", "Unknown")
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except Exception as e:
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logger.warning(f"Failed to read version from pyproject.toml: {e}")
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return "Unknown"
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