mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-11-18 01:34:50 +02:00
79 lines
2.5 KiB
Python
79 lines
2.5 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
#
|
||
|
|
# 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 <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
"""
|
||
|
|
API endpoints for compute notifications.
|
||
|
|
"""
|
||
|
|
|
||
|
|
from fastapi import APIRouter, WebSocket, WebSocketDisconnect
|
||
|
|
from websockets.exceptions import WebSocketException
|
||
|
|
from typing import List
|
||
|
|
|
||
|
|
from gns3server.compute.notification_manager import NotificationManager
|
||
|
|
|
||
|
|
import logging
|
||
|
|
log = logging.getLogger(__name__)
|
||
|
|
|
||
|
|
router = APIRouter()
|
||
|
|
|
||
|
|
|
||
|
|
class ConnectionManager:
|
||
|
|
def __init__(self):
|
||
|
|
self.active_connections: List[WebSocket] = []
|
||
|
|
|
||
|
|
async def connect(self, websocket: WebSocket):
|
||
|
|
await websocket.accept()
|
||
|
|
self.active_connections.append(websocket)
|
||
|
|
|
||
|
|
def disconnect(self, websocket: WebSocket):
|
||
|
|
|
||
|
|
self.active_connections.remove(websocket)
|
||
|
|
|
||
|
|
async def close_active_connections(self):
|
||
|
|
|
||
|
|
for websocket in self.active_connections:
|
||
|
|
await websocket.close()
|
||
|
|
|
||
|
|
async def send_text(self, message: str, websocket: WebSocket):
|
||
|
|
await websocket.send_text(message)
|
||
|
|
|
||
|
|
async def broadcast(self, message: str):
|
||
|
|
for connection in self.active_connections:
|
||
|
|
await connection.send_text(message)
|
||
|
|
|
||
|
|
|
||
|
|
manager = ConnectionManager()
|
||
|
|
|
||
|
|
|
||
|
|
@router.websocket("/notifications/ws")
|
||
|
|
async def compute_notifications(websocket: WebSocket):
|
||
|
|
|
||
|
|
log.info("Client has disconnected from compute WebSocket")
|
||
|
|
notifications = NotificationManager.instance()
|
||
|
|
await manager.connect(websocket)
|
||
|
|
try:
|
||
|
|
log.info("New client has connected to compute WebSocket")
|
||
|
|
with notifications.queue() as queue:
|
||
|
|
while True:
|
||
|
|
notification = await queue.get_json(5)
|
||
|
|
await manager.send_text(notification, websocket)
|
||
|
|
except (WebSocketException, WebSocketDisconnect) as e:
|
||
|
|
log.info("Client has disconnected from compute WebSocket: {}".format(e))
|
||
|
|
finally:
|
||
|
|
await websocket.close()
|
||
|
|
manager.disconnect(websocket)
|