mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-25 01:38:08 +00:00
77 lines
2.5 KiB
Python
77 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 controller notifications.
|
|
"""
|
|
|
|
import asyncio
|
|
|
|
from fastapi import APIRouter, WebSocket
|
|
from fastapi.responses import StreamingResponse
|
|
from starlette.endpoints import WebSocketEndpoint
|
|
|
|
from gns3server.controller import Controller
|
|
|
|
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
router = APIRouter()
|
|
|
|
|
|
@router.get("")
|
|
async def http_notification():
|
|
"""
|
|
Receive controller notifications about the controller from HTTP stream.
|
|
"""
|
|
|
|
async def event_stream():
|
|
|
|
with Controller.instance().notification.controller_queue() as queue:
|
|
while True:
|
|
msg = await queue.get_json(5)
|
|
yield ("{}\n".format(msg)).encode("utf-8")
|
|
|
|
return StreamingResponse(event_stream(), media_type="application/json")
|
|
|
|
|
|
@router.websocket_route("/ws")
|
|
class ControllerWebSocketNotifications(WebSocketEndpoint):
|
|
"""
|
|
Receive controller notifications about the controller from WebSocket stream.
|
|
"""
|
|
|
|
async def on_connect(self, websocket: WebSocket) -> None:
|
|
|
|
await websocket.accept()
|
|
log.info(f"New client {websocket.client.host}:{websocket.client.port} has connected to controller WebSocket")
|
|
|
|
self._notification_task = asyncio.ensure_future(self._stream_notifications(websocket=websocket))
|
|
|
|
async def on_disconnect(self, websocket: WebSocket, close_code: int) -> None:
|
|
|
|
self._notification_task.cancel()
|
|
log.info(f"Client {websocket.client.host}:{websocket.client.port} has disconnected from controller WebSocket"
|
|
f" with close code {close_code}")
|
|
|
|
async def _stream_notifications(self, websocket: WebSocket) -> None:
|
|
|
|
with Controller.instance().notifications.queue() as queue:
|
|
while True:
|
|
notification = await queue.get_json(5)
|
|
await websocket.send_text(notification)
|