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# -*- coding: utf-8 -*-
#
from collections import OrderedDict
import logging
import uuid
from django.core.cache import cache
from django.shortcuts import get_object_or_404, redirect
from django.utils import timezone
from rest_framework import viewsets
from rest_framework.views import APIView, Response
from rest_framework.permissions import AllowAny
from common.utils import get_object_or_none
from common.permissions import IsAppUser, IsOrgAdminOrAppUser, IsSuperUser
from ...models import Terminal, Status, Session
from ...serializers import v1 as serializers
__all__ = [
'TerminalViewSet', 'TerminalTokenApi', 'StatusViewSet', 'TerminalConfig',
]
logger = logging.getLogger(__file__)
class TerminalViewSet(viewsets.ModelViewSet):
queryset = Terminal.objects.filter(is_deleted=False)
serializer_class = serializers.TerminalSerializer
permission_classes = (IsSuperUser,)
def create(self, request, *args, **kwargs):
name = request.data.get('name')
remote_ip = request.META.get('REMOTE_ADDR')
x_real_ip = request.META.get('X-Real-IP')
remote_addr = x_real_ip or remote_ip
terminal = get_object_or_none(Terminal, name=name, is_deleted=False)
if terminal:
msg = 'Terminal name %s already used' % name
return Response({'msg': msg}, status=409)
serializer = self.serializer_class(data={
'name': name, 'remote_addr': remote_addr
})
if serializer.is_valid():
terminal = serializer.save()
# App should use id, token get access key, if accepted
token = uuid.uuid4().hex
cache.set(token, str(terminal.id), 3600)
data = {"id": str(terminal.id), "token": token, "msg": "Need accept"}
return Response(data, status=201)
else:
data = serializer.errors
logger.error("Register terminal error: {}".format(data))
return Response(data, status=400)
def get_permissions(self):
if self.action == "create":
self.permission_classes = (AllowAny,)
return super().get_permissions()
class TerminalTokenApi(APIView):
permission_classes = (AllowAny,)
queryset = Terminal.objects.filter(is_deleted=False)
def get(self, request, *args, **kwargs):
try:
terminal = self.queryset.get(id=kwargs.get('terminal'))
except Terminal.DoesNotExist:
terminal = None
token = request.query_params.get("token")
if terminal is None:
return Response('May be reject by administrator', status=401)
if token is None or cache.get(token, "") != str(terminal.id):
return Response('Token is not valid', status=401)
if not terminal.is_accepted:
return Response("Terminal was not accepted yet", status=400)
if not terminal.user or not terminal.user.access_key.all():
return Response("No access key generate", status=401)
access_key = terminal.user.access_key.first()
data = OrderedDict()
data['access_key'] = {'id': access_key.id, 'secret': access_key.secret}
return Response(data, status=200)
class StatusViewSet(viewsets.ModelViewSet):
queryset = Status.objects.all()
serializer_class = serializers.StatusSerializer
permission_classes = (IsOrgAdminOrAppUser,)
session_serializer_class = serializers.SessionSerializer
task_serializer_class = serializers.TaskSerializer
def create(self, request, *args, **kwargs):
from_gua = self.request.query_params.get("from_guacamole", None)
if not from_gua:
self.handle_sessions()
super().create(request, *args, **kwargs)
tasks = self.request.user.terminal.task_set.filter(is_finished=False)
serializer = self.task_serializer_class(tasks, many=True)
return Response(serializer.data, status=201)
def handle_sessions(self):
sessions_active = []
for session_data in self.request.data.get("sessions", []):
self.create_or_update_session(session_data)
if not session_data["is_finished"]:
sessions_active.append(session_data["id"])
sessions_in_db_active = Session.objects.filter(
is_finished=False,
terminal=self.request.user.terminal.id
)
for session in sessions_in_db_active:
if str(session.id) not in sessions_active:
session.is_finished = True
session.date_end = timezone.now()
session.save()
def create_or_update_session(self, session_data):
session_data["terminal"] = self.request.user.terminal.id
_id = session_data["id"]
session = get_object_or_none(Session, id=_id)
if session:
serializer = serializers.SessionSerializer(
data=session_data, instance=session
)
else:
serializer = serializers.SessionSerializer(data=session_data)
if serializer.is_valid():
session = serializer.save()
return session
else:
msg = "session data is not valid {}: {}".format(
serializer.errors, str(serializer.data)
)
logger.error(msg)
return None
def get_queryset(self):
terminal_id = self.kwargs.get("terminal", None)
if terminal_id:
terminal = get_object_or_404(Terminal, id=terminal_id)
self.queryset = terminal.status_set.all()
return self.queryset
def perform_create(self, serializer):
serializer.validated_data["terminal"] = self.request.user.terminal
return super().perform_create(serializer)
def get_permissions(self):
if self.action == "create":
self.permission_classes = (IsAppUser,)
return super().get_permissions()
class TerminalConfig(APIView):
permission_classes = (IsAppUser,)
def get(self, request):
user = request.user
terminal = user.terminal
configs = terminal.config
return Response(configs, status=200)