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320 lines
10 KiB
320 lines
10 KiB
#
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# Copyright (C) 2015 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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import asyncio
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import signal
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import os
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from fastapi import APIRouter, Request, Depends, WebSocket, WebSocketDisconnect, status
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from fastapi.responses import StreamingResponse
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from fastapi.encoders import jsonable_encoder
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from fastapi.routing import Mount
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from websockets.exceptions import ConnectionClosed, WebSocketException
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from typing import List
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from gns3server.config import Config
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from gns3server.controller import Controller
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from gns3server.version import __version__
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from gns3server.controller.controller_error import ControllerError, ControllerForbiddenError
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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(
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"/version",
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response_model=schemas.Version,
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)
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def get_version(request: Request) -> dict:
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"""
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Return the server version number.
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"""
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# retrieve the controller host information from the mounted
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# compute subapp
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controller_host = None
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for route in request.app.routes:
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if isinstance(route, Mount) and route.name == "compute":
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controller_host = route.app.state.controller_host
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local_server = Config.instance().settings.Server.local
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return {
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"controller_host": controller_host,
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"version": __version__,
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"local": local_server
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}
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@router.post(
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"/version",
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response_model=schemas.Version,
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response_model_exclude_defaults=True,
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responses={409: {"model": schemas.ErrorMessage, "description": "Invalid version"}},
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)
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def check_version(version: schemas.Version) -> dict:
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"""
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Check if version is the same as the server.
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"""
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if version.version != __version__:
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raise ControllerError(f"Client version {version.version} is not the same as server version {__version__}")
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return {"version": __version__}
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@router.post(
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"/reload",
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dependencies=[Depends(get_current_active_user)],
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status_code=status.HTTP_204_NO_CONTENT,
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)
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async def reload() -> None:
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"""
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Reload the controller
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"""
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await Controller.instance().reload()
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@router.post(
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"/shutdown",
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dependencies=[Depends(get_current_active_user)],
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status_code=status.HTTP_204_NO_CONTENT,
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responses={403: {"model": schemas.ErrorMessage, "description": "Server shutdown not allowed"}},
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)
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async def shutdown() -> None:
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"""
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Shutdown the server
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"""
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if Config.instance().settings.Server.local is False:
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raise ControllerForbiddenError("You can only stop a local server")
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log.info("Start shutting down the server")
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# close all the projects first
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controller = Controller.instance()
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projects = controller.projects.values()
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tasks = []
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for project in projects:
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tasks.append(asyncio.ensure_future(project.close()))
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if tasks:
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done, _ = await asyncio.wait(tasks)
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for future in done:
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try:
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future.result()
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except Exception as e:
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log.error(f"Could not close project: {e}", exc_info=1)
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continue
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# then shutdown the server itself
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os.kill(os.getpid(), signal.SIGTERM)
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@router.get(
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"/iou_license",
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dependencies=[Depends(get_current_active_user)],
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response_model=schemas.IOULicense
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)
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def get_iou_license() -> schemas.IOULicense:
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"""
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Return the IOU license settings
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"""
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return Controller.instance().iou_license
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@router.put(
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"/iou_license",
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dependencies=[Depends(get_current_active_user)],
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status_code=status.HTTP_201_CREATED,
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response_model=schemas.IOULicense
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)
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async def update_iou_license(iou_license: schemas.IOULicense) -> schemas.IOULicense:
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"""
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Update the IOU license settings.
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"""
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controller = Controller().instance()
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current_iou_license = controller.iou_license
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current_iou_license.update(jsonable_encoder(iou_license))
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controller.save()
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return current_iou_license
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@router.get("/statistics", dependencies=[Depends(get_current_active_user)])
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async def statistics() -> List[dict]:
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"""
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Return server statistics.
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"""
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compute_statistics = []
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for compute in list(Controller.instance().computes.values()):
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try:
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r = await compute.get("/statistics")
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compute_statistics.append({"compute_id": compute.id, "compute_name": compute.name, "statistics": r.json})
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except ControllerError as e:
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log.error(f"Could not retrieve statistics on compute {compute.name}: {e}")
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return compute_statistics
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@router.get("/notifications", dependencies=[Depends(get_current_active_user)])
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async def controller_http_notifications(request: Request) -> 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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from gns3server.api.server import app
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log.info(f"New client {request.client.host}:{request.client.port} has connected to controller HTTP "
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f"notification stream")
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async def event_stream():
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try:
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with Controller.instance().notification.controller_queue() as queue:
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while not app.state.exiting:
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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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finally:
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log.info(f"Client {request.client.host}:{request.client.port} has disconnected from controller HTTP "
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f"notification stream")
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return StreamingResponse(event_stream(), media_type="application/json")
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@router.websocket("/notifications/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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# @Route.post(
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# r"/debug",
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# description="Dump debug information to disk (debug directory in config directory). Work only for local server",
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# status_codes={
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# 201: "Written"
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# })
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# async def debug(request, response):
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#
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# config = Config.instance()
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# if config.get_section_config("Server").getboolean("local", False) is False:
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# raise ControllerForbiddenError("You can only debug a local server")
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#
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# debug_dir = os.path.join(config.config_dir, "debug")
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# try:
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# if os.path.exists(debug_dir):
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# shutil.rmtree(debug_dir)
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# os.makedirs(debug_dir)
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# with open(os.path.join(debug_dir, "controller.txt"), "w+") as f:
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# f.write(ServerHandler._getDebugData())
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# except Exception as e:
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# # If something is wrong we log the info to the log and we hope the log will be include correctly to the debug export
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# log.error("Could not export debug information {}".format(e), exc_info=1)
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#
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# try:
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# if Controller.instance().gns3vm.engine == "vmware":
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# vmx_path = Controller.instance().gns3vm.current_engine().vmx_path
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# if vmx_path:
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# shutil.copy(vmx_path, os.path.join(debug_dir, os.path.basename(vmx_path)))
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# except OSError as e:
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# # If something is wrong we log the info to the log and we hope the log will be include correctly to the debug export
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# log.error("Could not copy VMware VMX file {}".format(e), exc_info=1)
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#
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# for compute in list(Controller.instance().computes.values()):
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# try:
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# r = await compute.get("/debug", raw=True)
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# data = r.body.decode("utf-8")
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# except Exception as e:
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# data = str(e)
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# with open(os.path.join(debug_dir, "compute_{}.txt".format(compute.id)), "w+") as f:
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# f.write("Compute ID: {}\n".format(compute.id))
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# f.write(data)
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#
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# response.set_status(201)
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#
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# @staticmethod
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# def _getDebugData():
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# try:
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# connections = psutil.net_connections()
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# # You need to be root for OSX
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# except psutil.AccessDenied:
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# connections = None
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#
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# try:
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# addrs = ["* {}: {}".format(key, val) for key, val in psutil.net_if_addrs().items()]
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# except UnicodeDecodeError:
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# addrs = ["INVALID ADDR WITH UNICODE CHARACTERS"]
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#
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# data = """Version: {version}
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# OS: {os}
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# Python: {python}
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# CPU: {cpu}
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# Memory: {memory}
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#
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# Networks:
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# {addrs}
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#
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# Open connections:
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# {connections}
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#
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# Processus:
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# """.format(
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# version=__version__,
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# os=platform.platform(),
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# python=platform.python_version(),
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# memory=psutil.virtual_memory(),
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# cpu=psutil.cpu_times(),
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# connections=connections,
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# addrs="\n".join(addrs)
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# )
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# for proc in psutil.process_iter():
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# try:
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# psinfo = proc.as_dict(attrs=["name", "exe"])
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# data += "* {} {}\n".format(psinfo["name"], psinfo["exe"])
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# except psutil.NoSuchProcess:
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# pass
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#
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# data += "\n\nProjects"
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# for project in Controller.instance().projects.values():
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# data += "\n\nProject name: {}\nProject ID: {}\n".format(project.name, project.id)
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# if project.status != "closed":
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# for link in project.links.values():
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# data += "Link {}: {}".format(link.id, link.debug_link_data)
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#
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# return data
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