Logan
144 lines
4.9 KiB
Python
144 lines
4.9 KiB
Python
import asyncio
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from pathlib import Path
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from datetime import datetime, timezone
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from typing import Optional
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import httpx
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from app.config import settings
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from app.internal import credentials
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from app.internal.logger import logger
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MAX_RECORDING_SECONDS = 600 # 10 min safety cap; FFmpeg terminates long-running calls
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class CallRecorder:
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def __init__(self):
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self._process: Optional[asyncio.subprocess.Process] = None
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self._current_call_id: Optional[str] = None
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self._current_file: Optional[Path] = None
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self._recordings_dir = Path(settings.recordings_path)
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async def start_recording(self, call_id: str) -> bool:
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if self._process:
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logger.warning("Recording already running — ignoring start.")
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return False
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self._recordings_dir.mkdir(parents=True, exist_ok=True)
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ts = datetime.now(timezone.utc).strftime("%Y%m%d_%H%M%S")
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self._current_file = self._recordings_dir / f"{ts}_{call_id}.mp3"
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self._current_call_id = call_id
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# Record from PulseAudio (drb_sink.monitor, set as the default source).
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# PulseAudio is the primary audio path — it has ~250ms latency vs 2-5s for Icecast,
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# so recordings align with OP25 call_start/call_end events.
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cmd = [
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"ffmpeg", "-y",
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"-f", "pulse",
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"-i", "default",
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"-acodec", "libmp3lame",
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"-ar", "22050",
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"-b:a", "32k",
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"-t", str(MAX_RECORDING_SECONDS),
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str(self._current_file),
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]
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try:
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self._process = await asyncio.create_subprocess_exec(
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*cmd,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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)
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# Quick check if it died immediately (e.g. Pulse source not found)
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await asyncio.sleep(0.5)
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if self._process.returncode is not None:
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_, stderr = await self._process.communicate()
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logger.error(f"FFmpeg exited immediately ({self._process.returncode}): {stderr.decode()}")
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return False
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logger.info(f"Recording process started: {self._current_file.name}")
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return True
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except Exception as e:
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logger.error(f"FFmpeg start failed: {e}")
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self._process = None
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self._current_file = None
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self._current_call_id = None
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return False
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async def stop_recording(self) -> Optional[Path]:
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if not self._process:
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return None
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proc = self._process
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output_file = self._current_file
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self._process = None
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self._current_file = None
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self._current_call_id = None
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try:
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proc.terminate()
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await asyncio.wait_for(proc.wait(), timeout=5)
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except asyncio.TimeoutError:
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proc.kill()
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except ProcessLookupError:
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pass
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if output_file and output_file.exists() and output_file.stat().st_size > 0:
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logger.info(f"Recording saved: {output_file.name} ({output_file.stat().st_size} bytes)")
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return output_file
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logger.warning("Recording file empty or missing — discarding.")
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return None
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async def upload_recording(
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self,
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file_path: Path,
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call_id: str,
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talkgroup_id: Optional[int] = None,
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talkgroup_name: Optional[str] = None,
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system_id: Optional[str] = None,
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) -> Optional[str]:
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if not settings.c2_url:
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logger.info("No C2_URL configured — skipping upload.")
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return None
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upload_url = f"{settings.c2_url}/upload"
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api_key = credentials.get_api_key()
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headers = {"Authorization": f"Bearer {api_key}"} if api_key else {}
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form: dict = {"call_id": call_id, "node_id": settings.node_id}
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if talkgroup_id is not None:
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form["talkgroup_id"] = str(talkgroup_id)
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if talkgroup_name:
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form["talkgroup_name"] = talkgroup_name
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if system_id:
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form["system_id"] = system_id
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try:
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async with httpx.AsyncClient(timeout=120) as client:
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with open(file_path, "rb") as f:
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r = await client.post(
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upload_url,
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files={"file": (file_path.name, f, "audio/mpeg")},
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data=form,
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headers=headers,
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)
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r.raise_for_status()
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audio_url = r.json().get("url")
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logger.info(f"Upload complete: {audio_url}")
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return audio_url
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except Exception as e:
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logger.error(f"Upload failed: {e}")
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return None
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finally:
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try:
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file_path.unlink()
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except Exception:
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pass
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@property
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def is_recording(self) -> bool:
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return self._process is not None
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call_recorder = CallRecorder()
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