#
# Copyright (C) 2020 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see .
"""
API routes for compute notifications.
"""
from fastapi import APIRouter, WebSocket, WebSocketDisconnect
from websockets.exceptions import ConnectionClosed, WebSocketException
from gns3server.compute.notification_manager import NotificationManager
import logging
log = logging.getLogger(__name__)
router = APIRouter()
@router.websocket("/notifications/ws")
async def notification_ws(websocket: WebSocket):
"""
Receive project notifications about the project from WebSocket.
"""
await websocket.accept()
log.info(f"New client {websocket.client.host}:{websocket.client.port} has connected to compute WebSocket")
try:
with NotificationManager.instance().queue() as queue:
while True:
notification = await queue.get_json(5)
await websocket.send_text(notification)
except (ConnectionClosed, WebSocketDisconnect):
log.info(f"Client {websocket.client.host}:{websocket.client.port} has disconnected from compute WebSocket")
except WebSocketException as e:
log.warning(f"Error while sending to controller event to WebSocket client: {e}")
finally:
await websocket.close()
if __name__ == '__main__':
import uvicorn
from fastapi import FastAPI
from starlette.responses import HTMLResponse
app = FastAPI()
app.include_router(router)
html = """
"""
@app.get("/")
async def get() -> HTMLResponse:
return HTMLResponse(html)
uvicorn.run(app, host="localhost", port=8000)