869ea21bbe
- Settings 增加 video_open_timeout_sec（VIDEO_OPEN_TIMEOUT_SEC），默认 45s - SessionManager 全部就绪等待为该值 + 5s；StreamWorker 传入单路超时 - baked pipeline 回退默认值与配置对齐；.env.example 补充说明 - or_site_config.sample.json 扩展穿透摄像头与术间绑定示例 - 同步 uv.lock
124 lines
4.3 KiB
Python
124 lines
4.3 KiB
Python
"""单路 RTSP 拉流 worker：负责打开、重连、读帧分发。
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从 ``CameraSessionManager._camera_worker`` 抽出，保持同样的行为：
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- 打开失败 → 退避 → 重试。
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- 连续读帧失败达到阈值 → 释放连接 → 退避 → 重试。
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- 读到可用帧后交给上游 ``frame_handler``，由其决定是否推理 / 跳帧。
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不知道手术会话、推理结果或数据库。日志中出现 RTSP URL 时会脱敏 user:password。
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"""
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from __future__ import annotations
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import asyncio
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import re
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from typing import Awaitable, Callable
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from loguru import logger
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from app.baked import pipeline as bp
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from app.services.video.rtsp_capture import RtspCapture
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FrameHandler = Callable[[object], Awaitable[None]]
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_RTSP_CRED_RE = re.compile(r"(?P<scheme>rtsp://)(?P<userinfo>[^@/\s]+@)")
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def redact_rtsp_url(url: str | None) -> str:
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"""把 ``rtsp://user:pwd@host/...`` 脱敏为 ``rtsp://***@host/...``。"""
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if not url:
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return ""
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return _RTSP_CRED_RE.sub(r"\g<scheme>***@", url)
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class CameraStreamWorker:
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"""以 async 循环封装单路 RTSP 的重连/读帧，交由 handler 处理帧。"""
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def __init__(
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self,
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*,
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surgery_id: str,
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camera_id: str,
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url: str,
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open_timeout_sec: float | None = None,
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) -> None:
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self._surgery_id = surgery_id
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self._camera_id = camera_id
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self._url = url
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self._open_timeout_sec = (
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float(open_timeout_sec) if open_timeout_sec is not None else bp.VIDEO_OPEN_TIMEOUT_SEC
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)
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async def run(
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self,
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*,
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stream_ready: asyncio.Event,
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stop_event: asyncio.Event,
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frame_handler: FrameHandler,
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) -> None:
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cap: RtspCapture | None = None
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consecutive_failures = 0
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first_ready = True
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safe_url = redact_rtsp_url(self._url)
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try:
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while not stop_event.is_set():
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if cap is None:
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try:
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cap = RtspCapture(
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self._url, open_timeout_sec=self._open_timeout_sec
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)
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await asyncio.to_thread(cap.open)
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consecutive_failures = 0
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if first_ready:
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stream_ready.set()
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first_ready = False
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logger.info(
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"RTSP stream opened camera={} surgery={} url={}",
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self._camera_id,
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self._surgery_id,
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safe_url,
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)
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except Exception as exc:
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logger.warning(
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"RTSP open failed camera={} surgery={} url={}: {}",
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self._camera_id,
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self._surgery_id,
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safe_url,
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exc,
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)
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if cap is not None:
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await asyncio.to_thread(cap.release)
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cap = None
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await asyncio.sleep(bp.VIDEO_RECONNECT_BACKOFF_SECONDS)
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continue
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ok, frame = await asyncio.to_thread(cap.read)
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if not ok or frame is None:
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consecutive_failures += 1
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if (
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consecutive_failures
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>= bp.VIDEO_READ_FAILURE_RECONNECT_THRESHOLD
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):
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logger.warning(
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"RTSP reconnect camera={} surgery={} url={} after {} read failures",
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self._camera_id,
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self._surgery_id,
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safe_url,
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consecutive_failures,
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)
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await asyncio.to_thread(cap.release)
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cap = None
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consecutive_failures = 0
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await asyncio.sleep(bp.VIDEO_RECONNECT_BACKOFF_SECONDS)
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else:
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await asyncio.sleep(0.05)
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continue
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consecutive_failures = 0
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await frame_handler(frame)
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finally:
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if cap is not None:
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await asyncio.to_thread(cap.release)
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