Rest framework (#24)

* Add rest framework for API: First Commit

* modify some shell scripts to make variable references safer; modify some python scripts to reduce the code complexity and cyclomatic complexity of functions.

* Add REST API for some webvirtcloud functions. Instance list/delete/create, compute list/delete/create, storages-network list/retrieve. Add swagger and redoc for API interface

* update requirements

Co-authored-by: herengui <herengui@uniontech.com>

interfaces/api/viewsets.py

@@ -0,0 +1,32 @@
+from django.shortcuts import get_object_or_404
+from computes.models import Compute
+from rest_framework import status, viewsets
+
+
+from vrtManager.interface import wvmInterfaces, wvmInterface
+
+from .serializers import InterfacesSerializer
+from rest_framework.response import Response
+
+
+
+class InterfaceViewSet(viewsets.ViewSet):
+    """
+    A viewset for listing retrieving interfaces.
+    """
+    
+    def list(self, request, compute_pk=None):
+        queryset = []
+        compute = get_object_or_404(Compute, pk=compute_pk)
+        
+        conn = wvmInterfaces(compute.hostname, compute.login, compute.password, compute.type)
+        ifaces = conn.get_ifaces()
+
+        for iface in ifaces:
+            interf = wvmInterface(compute.hostname, compute.login, compute.password, compute.type, iface)
+            queryset.append(interf.get_details())
+
+        serializer = InterfacesSerializer(queryset, many=True, context={'request': request})
+
+        return Response(serializer.data)
+