mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-01 04:38:12 +00:00
120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
#
|
|
# 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 routes for compute notifications.
|
|
"""
|
|
|
|
import base64
|
|
import binascii
|
|
|
|
from fastapi import APIRouter, WebSocket, WebSocketDisconnect, status, HTTPException
|
|
from fastapi.security.utils import get_authorization_scheme_param
|
|
from websockets.exceptions import ConnectionClosed, WebSocketException
|
|
|
|
from gns3server.compute.notification_manager import NotificationManager
|
|
|
|
import logging
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
router = APIRouter()
|
|
|
|
|
|
@router.websocket("/notifications/ws")
|
|
async def notification_ws(websocket: WebSocket) -> None:
|
|
"""
|
|
Receive project notifications about the project from WebSocket.
|
|
"""
|
|
|
|
await websocket.accept()
|
|
|
|
# handle basic HTTP authentication
|
|
invalid_user_credentials_exc = HTTPException(
|
|
status_code=status.HTTP_401_UNAUTHORIZED,
|
|
detail="Invalid authentication credentials",
|
|
headers={"WWW-Authenticate": "Basic"},
|
|
)
|
|
|
|
try:
|
|
authorization = websocket.headers.get("Authorization")
|
|
scheme, param = get_authorization_scheme_param(authorization)
|
|
if not authorization or scheme.lower() != "basic":
|
|
raise invalid_user_credentials_exc
|
|
try:
|
|
data = base64.b64decode(param).decode("ascii")
|
|
except (ValueError, UnicodeDecodeError, binascii.Error):
|
|
raise invalid_user_credentials_exc
|
|
username, separator, password = data.partition(":")
|
|
if not separator:
|
|
raise invalid_user_credentials_exc
|
|
except invalid_user_credentials_exc as e:
|
|
websocket_error = {"action": "log.error", "event": {"message": f"Could not authenticate while connecting to "
|
|
f"compute WebSocket: {e.detail}"}}
|
|
await websocket.send_json(websocket_error)
|
|
return await websocket.close(code=1008)
|
|
|
|
log.info(f"New client {websocket.client.host}:{websocket.client.port} has connected to compute WebSocket")
|
|
try:
|
|
with NotificationManager.instance().queue() as queue:
|
|
while True:
|
|
notification = await queue.get_json(5)
|
|
await websocket.send_text(notification)
|
|
except (ConnectionClosed, WebSocketDisconnect):
|
|
log.info(f"Client {websocket.client.host}:{websocket.client.port} has disconnected from compute WebSocket")
|
|
except WebSocketException as e:
|
|
log.warning(f"Error while sending to controller event to WebSocket client: {e}")
|
|
finally:
|
|
try:
|
|
await websocket.close()
|
|
except OSError:
|
|
pass # ignore OSError: [Errno 107] Transport endpoint is not connected
|
|
|
|
if __name__ == "__main__":
|
|
|
|
import uvicorn
|
|
from fastapi import FastAPI
|
|
from starlette.responses import HTMLResponse
|
|
|
|
app = FastAPI()
|
|
app.include_router(router)
|
|
|
|
html = """
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<body>
|
|
<ul id='messages'>
|
|
</ul>
|
|
<script>
|
|
var ws = new WebSocket("ws://localhost:8000/notifications/ws");
|
|
ws.onmessage = function(event) {
|
|
var messages = document.getElementById('messages')
|
|
var message = document.createElement('li')
|
|
var content = document.createTextNode(event.data)
|
|
message.appendChild(content)
|
|
messages.appendChild(message)
|
|
};
|
|
</script>
|
|
</body>
|
|
</html>
|
|
"""
|
|
|
|
@app.get("/")
|
|
async def get() -> HTMLResponse:
|
|
return HTMLResponse(html)
|
|
|
|
uvicorn.run(app, host="localhost", port=8000)
|