mirror of
https://github.com/GNS3/gns3-server.git
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79 lines
2.8 KiB
Python
79 lines
2.8 KiB
Python
#
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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 routes for controller notifications.
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"""
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from fastapi import APIRouter, Depends, WebSocket, WebSocketDisconnect
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from fastapi.responses import StreamingResponse
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from websockets.exceptions import ConnectionClosed, WebSocketException
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from gns3server.controller import Controller
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from gns3server import schemas
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from .dependencies.authentication import get_current_active_user, get_current_active_user_from_websocket
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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("", dependencies=[Depends(get_current_active_user)])
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async def controller_http_notifications() -> StreamingResponse:
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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 f"{msg}\n".encode("utf-8")
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return StreamingResponse(event_stream(), media_type="application/json")
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@router.websocket("/ws")
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async def controller_ws_notifications(
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websocket: WebSocket,
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current_user: schemas.User = Depends(get_current_active_user_from_websocket)
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) -> None:
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"""
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Receive project notifications about the controller from WebSocket.
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"""
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if current_user is None:
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return
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log.info(f"New client {websocket.client.host}:{websocket.client.port} has connected to controller WebSocket")
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try:
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with Controller.instance().notification.controller_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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except (ConnectionClosed, WebSocketDisconnect):
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log.info(f"Client {websocket.client.host}:{websocket.client.port} has disconnected from controller WebSocket")
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except WebSocketException as e:
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log.warning(f"Error while sending to controller event to WebSocket client: {e}")
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finally:
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try:
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await websocket.close()
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except OSError:
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pass # ignore OSError: [Errno 107] Transport endpoint is not connected
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