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>

networks/api/serializers.py

@@ -0,0 +1,19 @@
+
+from rest_framework import serializers
+from networks.models import Networks
+
+
+class NetworksSerializer(serializers.ModelSerializer):
+        
+    class Meta:
+        model = Networks
+        fields = ['name', 'status', 'device', 'forward'] 
+
+
+
+# class VolumeSerializer(serializers.ModelSerializer):
+#     allocation = serializers.ReadOnlyField()
+#     meta_prealloc = serializers.BooleanField(write_only=True)
+#     class Meta:
+#         model = Volume
+#         fields = ['name', 'type', 'allocation', 'size', 'meta_prealloc'] 

networks/api/viewsets.py

@@ -0,0 +1,26 @@
+from django.shortcuts import get_object_or_404
+from computes.models import Compute
+from rest_framework import status, viewsets
+
+from vrtManager.network import wvmNetworks
+
+from .serializers import NetworksSerializer
+from rest_framework.response import Response
+
+
+class NetworkViewSet(viewsets.ViewSet):
+    """
+    A viewset for listing retrieving networks.
+    """
+    
+    def list(self, request, compute_pk=None):
+        
+        compute = get_object_or_404(Compute, pk=compute_pk)
+    
+        conn = wvmNetworks(compute.hostname, compute.login, compute.password, compute.type)
+        queryset = conn.get_networks_info()
+
+        serializer = NetworksSerializer(queryset, many=True, context={'request': request})
+
+        return Response(serializer.data)
+        

networks/models.py

@@ -1,3 +1,13 @@
 from django.db import models
+from django.utils.translation import gettext_lazy as _
+
 
 # Create your models here.
+class Networks(models.Model):
+    name = models.CharField(_('name'), max_length=20, error_messages={'required': _('No network name has been entered')})
+    status = models.CharField(_('status'), max_length=12)
+    device = models.CharField(_('device'), max_length=100)
+    forward = models.CharField(_('forward'), max_length=24)
+
+    class Meta:
+        managed = False