mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-25 09:48:09 +00:00
65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright (C) 2015 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 <http://www.gnu.org/licenses/>.
|
|
|
|
import asyncio
|
|
import aiohttp
|
|
from aiohttp.web import WebSocketResponse
|
|
from gns3server.web.route import Route
|
|
from gns3server.compute.notification_manager import NotificationManager
|
|
|
|
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
async def process_websocket(ws):
|
|
"""
|
|
Process ping / pong and close message
|
|
"""
|
|
try:
|
|
await ws.receive()
|
|
except aiohttp.WSServerHandshakeError:
|
|
pass
|
|
|
|
|
|
class NotificationHandler:
|
|
|
|
@Route.get(
|
|
r"/notifications/ws",
|
|
description="Send notifications using Websockets")
|
|
async def notifications(request, response):
|
|
notifications = NotificationManager.instance()
|
|
ws = WebSocketResponse()
|
|
await ws.prepare(request)
|
|
|
|
request.app['websockets'].add(ws)
|
|
asyncio.ensure_future(process_websocket(ws))
|
|
log.info("New client has connected to compute WebSocket")
|
|
try:
|
|
with notifications.queue() as queue:
|
|
while True:
|
|
notification = await queue.get_json(1)
|
|
if ws.closed:
|
|
break
|
|
await ws.send_str(notification)
|
|
finally:
|
|
log.info("Client has disconnected from compute WebSocket")
|
|
if not ws.closed:
|
|
await ws.close()
|
|
request.app['websockets'].discard(ws)
|
|
|
|
return ws
|