Wire disk images to VM creation/ordering

uncloud_django_based/uncloud/uncloud_vm/migrations/0004_vmproduct_primary_disk.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.3 on 2020-03-09 12:43
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0003_remove_vmhost_vms'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='vmproduct',
+            name='primary_disk',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMDiskProduct'),
+        ),
+    ]

uncloud_django_based/uncloud/uncloud_vm/migrations/0005_auto_20200309_1258.py

@@ -0,0 +1,25 @@
+# Generated by Django 3.0.3 on 2020-03-09 12:58
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_pay', '0001_initial'),
+        ('uncloud_vm', '0004_vmproduct_primary_disk'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='vmdiskproduct',
+            name='order',
+            field=models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order'),
+        ),
+        migrations.AddField(
+            model_name='vmdiskproduct',
+            name='status',
+            field=models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('ACTIVE', 'Active'), ('DELETED', 'Deleted')], default='PENDING', max_length=32),
+        ),
+    ]

uncloud_django_based/uncloud/uncloud_vm/models.py

@@ -69,6 +69,7 @@ class VMProduct(Product):
     cores = models.IntegerField()
     ram_in_gb = models.FloatField()
 
+    primary_disk = models.ForeignKey('VMDiskProduct', on_delete=models.CASCADE, null=True)
 
     def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
         # TODO: move magic numbers in variables
@@ -141,7 +142,7 @@ class VMDiskImageProduct(UncloudModel):
 
 
 
-class VMDiskProduct(UncloudModel):
+class VMDiskProduct(Product):
     """
     The VMDiskProduct is attached to a VM.
 
@@ -150,18 +151,27 @@ class VMDiskProduct(UncloudModel):
     It can be enlarged, but not shrinked compared to the VMDiskImageProduct.
     """
 
-    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    vm = models.ForeignKey(VMProduct, on_delete=models.CASCADE)
-    owner = models.ForeignKey(get_user_model(),
-                              on_delete=models.CASCADE,
-                              editable=False)
-
-    vm = models.ForeignKey(VMProduct,
-                           related_name='disks',
-                           on_delete=models.CASCADE)
     image = models.ForeignKey(VMDiskImageProduct, on_delete=models.CASCADE)
 
     size_in_gb = models.FloatField(blank=True)
 
+    @property
+    def description(self):
+        return "Disk for VM '{}': {}GB".format(self.vm.name, self.size_in_gb)
+
+    # TODO: move magic numbers in variables
+    def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
+        # TODO: move magic numbers in variables
+        if recurring_period == RecurringPeriod.PER_MONTH:
+            return (self.size_in_gb / 10) * 3.5
+        if recurring_period == RecurringPeriod.PER_YEAR:
+            return recurring_price(self, recurring_period.PER_MONTH) * 12
+        if recurring_period == RecurringPeriod.PER_HOUR:
+            return recurring_price(self, recurring_period.PER_MONTH) / 25
+        else:
+            raise Exception('Invalid recurring period for VM Disk Product pricing.')
+
     # Sample code for clean method
 
     # Ensures that a VMDiskProduct can only be created from a VMDiskImageProduct

uncloud_django_based/uncloud/uncloud_vm/serializers.py

@@ -31,13 +31,16 @@ class VMDiskProductSerializer(serializers.ModelSerializer):
         model = VMDiskProduct
         fields = '__all__'
 
+class CreateVMDiskProductSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = VMDiskProduct
+        fields = ['size_in_gb', 'image']
+
 class VMDiskImageProductSerializer(serializers.ModelSerializer):
     class Meta:
         model = VMDiskImageProduct
         fields = '__all__'
 
-
-
 class DCLVMProductSerializer(serializers.HyperlinkedModelSerializer):
     """
     Create an interface similar to standard DCL
@@ -84,18 +87,19 @@ class VMSnapshotProductSerializer(serializers.ModelSerializer):
     pricing['per_gb_hdd'] = 0.0006
     pricing['recurring_period'] = 'per_day'
 
-class VMProductSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = VMProduct
-        fields = ['uuid', 'order', 'owner', 'status', 'name',
-                  'cores', 'ram_in_gb', 'recurring_period',
-                  'snapshots', 'disks',
-                  'extra_data' ]
-        read_only_fields = ['uuid', 'order', 'owner', 'status' ]
 
+class VMProductSerializer(serializers.HyperlinkedModelSerializer):
     # Custom field used at creation (= ordering) only.
     recurring_period = serializers.ChoiceField(
             choices=VMProduct.allowed_recurring_periods())
+    primary_disk = CreateVMDiskProductSerializer()
+
+    class Meta:
+        model = VMProduct
+        fields = ['uuid', 'order', 'owner', 'status', 'name', \
+                'cores', 'ram_in_gb', 'recurring_period', 'primary_disk',
+                'snapshots', 'disks', 'extra_data' ]
+        read_only_fields = ['uuid', 'order', 'owner', 'status']
 
     snapshots = VMSnapshotProductSerializer(many=True,
                                             read_only=True)

uncloud_django_based/uncloud/uncloud_vm/views.py

@@ -122,10 +122,15 @@ class VMProductViewSet(ProductViewSet):
                 owner=request.user,
                 starting_date=timezone.now()
                 )
-        order.save()
+
+        # Create disk image.
+        disk = VMDiskProduct(owner=request.user, order=order,
+                **serializer.validated_data.pop("primary_disk"))
 
         # Create VM.
-        vm = serializer.save(owner=request.user, order=order)
+        vm = serializer.save(owner=request.user, order=order, primary_disk=disk)
+        disk.vm = vm
+        disk.save()
 
         return Response(serializer.data)