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server: use redis pubsub for interprocess websocket communication

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Mathieu Virbel
2023-10-25 16:56:43 +02:00
committed by Mathieu Virbel
parent 8bebb2a769
commit 00c06b7971
6 changed files with 183 additions and 52 deletions
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61
server/reflector/views/transcripts.py
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@@ -21,12 +21,14 @@ from reflector.processors.types import Transcript as ProcessorTranscript
from reflector.processors.types import Word as ProcessorWord
from reflector.settings import settings
from reflector.utils.audio_waveform import get_audio_waveform
from reflector.ws_manager import get_ws_manager
from starlette.concurrency import run_in_threadpool
from ._range_requests_response import range_requests_response
from .rtc_offer import PipelineEvent, RtcOffer, rtc_offer_base
router = APIRouter()
ws_manager = get_ws_manager()
# ==============================================================
# Models to move to a database, but required for the API to work
@@ -487,40 +489,10 @@ async def transcript_get_websocket_events(transcript_id: str):
# ==============================================================
# Websocket Manager
# Websocket
# ==============================================================
class WebsocketManager:
def __init__(self):
self.active_connections = {}
async def connect(self, transcript_id: str, websocket: WebSocket):
await websocket.accept()
if transcript_id not in self.active_connections:
self.active_connections[transcript_id] = []
self.active_connections[transcript_id].append(websocket)
def disconnect(self, transcript_id: str, websocket: WebSocket):
if transcript_id not in self.active_connections:
return
self.active_connections[transcript_id].remove(websocket)
if not self.active_connections[transcript_id]:
del self.active_connections[transcript_id]
async def send_json(self, transcript_id: str, message):
if transcript_id not in self.active_connections:
return
for connection in self.active_connections[transcript_id][:]:
try:
await connection.send_json(message)
except Exception:
self.active_connections[transcript_id].remove(connection)
ws_manager = WebsocketManager()
@router.websocket("/transcripts/{transcript_id}/events")
async def transcript_events_websocket(
transcript_id: str,
@@ -532,21 +504,25 @@ async def transcript_events_websocket(
if not transcript:
raise HTTPException(status_code=404, detail="Transcript not found")
await ws_manager.connect(transcript_id, websocket)
# connect to websocket manager
# use ts:transcript_id as room id
room_id = f"ts:{transcript_id}"
await ws_manager.add_user_to_room(room_id, websocket)
# on first connection, send all events
for event in transcript.events:
await websocket.send_json(event.model_dump(mode="json"))
# XXX if transcript is final (locked=True and status=ended)
# XXX send a final event to the client and close the connection
# endless loop to wait for new events
try:
# on first connection, send all events only to the current user
for event in transcript.events:
await websocket.send_json(event.model_dump(mode="json"))
# XXX if transcript is final (locked=True and status=ended)
# XXX send a final event to the client and close the connection
# endless loop to wait for new events
# we do not have command system now,
while True:
await websocket.receive()
except (RuntimeError, WebSocketDisconnect):
ws_manager.disconnect(transcript_id, websocket)
await ws_manager.remove_user_from_room(room_id, websocket)
# ==============================================================
@@ -658,7 +634,8 @@ async def handle_rtc_event_once(event: PipelineEvent, args, data):
return
# transmit to websocket clients
await ws_manager.send_json(transcript_id, resp.model_dump(mode="json"))
room_id = f"ts:{transcript_id}"
await ws_manager.send_json(room_id, resp.model_dump(mode="json"))
@router.post("/transcripts/{transcript_id}/record/webrtc")