mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-28 19:28:07 +00:00
77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2020 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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API endpoints for controller notifications.
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"""
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import asyncio
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from fastapi import APIRouter, WebSocket
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from fastapi.responses import StreamingResponse
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from starlette.endpoints import WebSocketEndpoint
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from gns3server.controller import Controller
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import logging
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log = logging.getLogger(__name__)
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router = APIRouter()
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@router.get("")
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async def http_notification():
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"""
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Receive controller notifications about the controller from HTTP stream.
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"""
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async def event_stream():
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with Controller.instance().notification.controller_queue() as queue:
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while True:
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msg = await queue.get_json(5)
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yield ("{}\n".format(msg)).encode("utf-8")
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return StreamingResponse(event_stream(), media_type="application/json")
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@router.websocket_route("/ws")
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class ControllerWebSocketNotifications(WebSocketEndpoint):
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"""
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Receive controller notifications about the controller from WebSocket stream.
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"""
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async def on_connect(self, websocket: WebSocket) -> None:
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await websocket.accept()
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log.info(f"New client {websocket.client.host}:{websocket.client.port} has connected to controller WebSocket")
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self._notification_task = asyncio.ensure_future(self._stream_notifications(websocket=websocket))
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async def on_disconnect(self, websocket: WebSocket, close_code: int) -> None:
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self._notification_task.cancel()
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log.info(f"Client {websocket.client.host}:{websocket.client.port} has disconnected from controller WebSocket"
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f" with close code {close_code}")
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async def _stream_notifications(self, websocket: WebSocket) -> None:
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with Controller.instance().notifications.queue() as queue:
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while True:
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notification = await queue.get_json(5)
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await websocket.send_text(notification)
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