fix migrations the ugly way

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>

nicohack202002/uncloud/opennebula/models.py

@@ -1,11 +0,0 @@
-import uuid
-
-from django.db import models
-from django.contrib.auth import get_user_model
-
-
-class VM(models.Model):
-    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
-    vmid = models.IntegerField()
-    owner = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
-    data = models.CharField(max_length=65536, null=True)

nicohack202002/uncloud/opennebula/views.py

@@ -1,59 +0,0 @@
-import json
-
-from rest_framework import generics
-from rest_framework.authentication import SessionAuthentication, BasicAuthentication
-from rest_framework.permissions import IsAuthenticated, IsAdminUser
-
-from .models import VM
-from .serializers import VMSerializer
-
-class VMList(generics.ListAPIView):
-    authentication_classes = [SessionAuthentication, BasicAuthentication]
-    permission_classes = [IsAuthenticated, IsAdminUser]
-    queryset = VM.objects.all()
-    serializer_class = VMSerializer
-
-
-class VMDetail(generics.RetrieveAPIView):
-    authentication_classes = [SessionAuthentication, BasicAuthentication]
-    permission_classes = [IsAuthenticated, IsAdminUser]
-    lookup_field = 'uuid'
-    queryset = VM.objects.all()
-    serializer_class = VMSerializer
-
-
-class UserVMList(generics.ListAPIView):
-    authentication_classes = [SessionAuthentication, BasicAuthentication]
-    permission_classes = [IsAuthenticated]
-    serializer_class = VMSerializer
-
-    def get_queryset(self):
-        user_email = self.request.user.ldap_user.attrs.data['mail']
-        vms = []
-        for mail in user_email:
-            vms += VM.objects.filter(owner__username=mail)
-
-        for vm in vms:
-            data = json.loads(vm.data)
-            vm_template = data['TEMPLATE']
-            vm.data = {
-                'cpu': vm_template['VCPU'],
-                'ram': vm_template['MEMORY'],
-                'nic': vm_template['NIC'],
-                'disks': vm_template['DISK']
-            }
-
-        return vms
-
-#######################################
-# Following for quick experimentation #
-#######################################
-
-# from django.http import HttpResponse
-#
-# def test(request):
-#     user_email = request.user.ldap_user.attrs.data['mail']
-#     vms = []
-#     for mail in user_email:
-#         vms += VM.objects.filter(owner__username=mail)
-#     return HttpResponse("Hello World")

nicohack202002/uncloud/uncloud_api/models.py

@@ -1,125 +0,0 @@
-import uuid
-
-from django.db import models
-from django.contrib.auth import get_user_model
-
-# Product in DB vs. product in code
-# DB:
-# - need to define params (+param types) in db -> messy?
-# - get /products/ is easy / automatic
-#
-# code
-# - can have serializer/verification of fields easily in DRF
-# - can have per product side effects / extra code running
-# - might (??) make features easier??
-# - how to setup / query the recurring period (?)
-# - could get products list via getattr() + re ...Product() classes
-# -> this could include the url for ordering => /order/vm_snapshot (params)
-# ---> this would work with urlpatterns
-
-# Combination: create specific product in DB (?)
-# - a table per product (?) with 1 entry?
-
-# Orders
-# define state in DB
-# select a price from a product => product might change, order stays
-# params:
-# - the product uuid or name (?) => productuuid
-# - the product parameters => for each feature
-#
-
-# logs
-# Should have a log = ... => 1:n field for most models!
-
-
-class Product(models.Model):
-    # override these fields by default
-    description = ""
-    recurring_period = "not_recurring"
-    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
-    status = models.CharField(
-        max_length=256, choices=(
-            ('pending', 'Pending'),
-            ('being_created', 'Being created'),
-            ('created_active', 'Created'),
-            ('deleted', 'Deleted')
-        ),
-        default='pending'
-    )
-
-    def __str__(self):
-        return "{}".format(self.name)
-
-
-class VMSnapshotProduct(Product):
-    price_per_gb_ssd = 0.35
-    price_per_gb_hdd = 1.5/100
-
-    sample_ssd = 10
-    sample_hdd = 100
-
-    def recurring_price(self):
-        return 0
-
-    def one_time_price(self):
-        return 0
-
-    @classmethod
-    def sample_price(cls):
-        return cls.sample_ssd * cls.price_per_gb_ssd + cls.sample_hdd * cls.price_per_gb_hdd
-
-    description = "Create snapshot of a VM"
-    recurring_period = "monthly"
-
-    @classmethod
-    def pricing_model(cls):
-        return """
-Pricing is on monthly basis and storage prices are equivalent to the storage
-price in the VM.
-
-Price per GB SSD is: {}
-Price per GB HDD is: {}
-
-
-Sample price for a VM with {} GB SSD and {} GB HDD VM is: {}.
-""".format(cls.price_per_gb_ssd, cls.price_per_gb_hdd,
-           cls.sample_ssd, cls.sample_hdd, cls.sample_price())
-
-    gb_ssd = models.FloatField()
-    gb_hdd = models.FloatField()
-
-
-class Feature(models.Model):
-    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
-    name = models.CharField(max_length=256)
-
-    recurring_price = models.FloatField(default=0)
-    one_time_price = models.FloatField()
-
-    product = models.ForeignKey(Product, on_delete=models.CASCADE)
-
-    # params for "cpu": cpu_count -> int
-    # each feature can only have one parameters
-    # could call this "value" and set whether it is user usable
-    # has_value = True/False
-    # value = string  -> int (?)
-    # value_int
-    # value_str
-    # value_float
-
-    def __str__(self):
-        return "'{}' - '{}'".format(self.product, self.name)
-
-
-class Order(models.Model):
-    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
-
-    owner = models.ForeignKey(get_user_model(),
-                              on_delete=models.CASCADE)
-
-    product = models.ForeignKey(Product,
-                                on_delete=models.CASCADE)
-
-
-class VMSnapshotOrder(Order):
-    pass

nicohack202002/uncloud/uncloud_api/views.py

@@ -1,83 +0,0 @@
-from django.shortcuts import render
-from django.contrib.auth import get_user_model
-from django.contrib.auth.models import Group
-
-from rest_framework import viewsets, permissions, generics
-from .serializers import UserSerializer, GroupSerializer
-from rest_framework.views import APIView
-from rest_framework.response import Response
-
-
-class CreditCardViewSet(viewsets.ModelViewSet):
-
-    """
-    API endpoint that allows credit cards to be listed
-    """
-    queryset = get_user_model().objects.all().order_by('-date_joined')
-    serializer_class = UserSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
-
-
-class UserViewSet(viewsets.ModelViewSet):
-
-    """
-    API endpoint that allows users to be viewed or edited.
-    """
-    queryset = get_user_model().objects.all().order_by('-date_joined')
-    serializer_class = UserSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
-
-class GroupViewSet(viewsets.ModelViewSet):
-    """
-    API endpoint that allows groups to be viewed or edited.
-    """
-    queryset = Group.objects.all()
-    serializer_class = GroupSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
-
-class GroupViewSet(viewsets.ModelViewSet):
-    """
-    API endpoint that allows groups to be viewed or edited.
-    """
-    queryset = Group.objects.all()
-    serializer_class = GroupSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
-
-
-# POST /vm/snapshot/ vmuuid=... => create snapshot, returns snapshot uuid
-# GET /vm/snapshot => list
-# DEL /vm/snapshot/<uuid:uuid> => delete
-# create-list -> get, post => ListCreateAPIView
-# del on other!
-class VMSnapshotView(generics.ListCreateAPIView):
-    #lookup_field = 'uuid'
-    permission_classes = [permissions.IsAuthenticated]
-
-import inspect
-import sys
-import re
-
-# Next: create /order/<productname> urls
-# Next: strip off "Product" at the end
-class ProductsView(APIView):
-    def get(self, request, format=None):
-        clsmembers = inspect.getmembers(sys.modules['uncloud_api.models'], inspect.isclass)
-        products = []
-        for name, c in clsmembers:
-            # Include everything that ends in Product, but not Product itself
-            m = re.match(r'(?P<pname>.+)Product$', name)
-            if m:
-                products.append({
-                    'name': m.group('pname'),
-                    'description': c.description,
-                    'recurring_period': c.recurring_period,
-                    'pricing_model': c.pricing_model()
-                }
-                )
-
-
-        return Response(products)

notes-nico.org

@@ -9,6 +9,16 @@ vmuuid=$(http nicocustomer
 http -a nicocustomer:xxx http://uncloud.ch/vm/create_snapshot uuid=
 password=...
 ```
+** backend realisation
+*** list snapshots
+    - have them in the DB
+    - create an entry on create
+*** creating snapshots
+    - vm sync / fsync?
+    - rbd snapshot
+      - host/cluster mapping?
+      - need image(s)
+
 * steps
 ** DONE authenticate via ldap
    CLOSED: [2020-02-20 Thu 19:05]
@@ -50,16 +60,8 @@ password=...
 ** viewset: .list and .create
 ** view: .get .post
 * TODO register CC
-* TODO list products
-* ahmed
-** schemas
-*** field: is_valid? - used by schemas
-*** definition of a "schema"
-* penguin pay
-## How to place a order with penguin pay
-
-### Requirements
-
+* DONE list products
+  CLOSED: [2020-02-24 Mon 20:15]
 * An ungleich account - can be registered for free on
   https://account.ungleich.ch
 * httpie installed (provides the http command)

uncloud/README.md

@@ -39,9 +39,27 @@ Then create the database owner by the new role:
 postgres=# create database uncloud owner nico;
 ```
 
+Installing the postgresql service is os dependent, but some hints:
+
+* Alpine: `apk add postgresql-server && rc-update add postgresql && rc-service  postgresql start`
 
 
 ### Secrets
 
 cp `uncloud/secrets_sample.py` to `uncloud/secrets.py` and replace the
 sample values with real values.
+
+
+## Flows / Orders
+
+### Creating a VMHost
+
+
+
+### Creating a VM
+
+* Create a VMHost
+* Create a VM on a VMHost
+
+
+### Creating a VM Snapshot

uncloud/opennebula/management/commands/syncvm.py

@@ -8,15 +8,10 @@ from xmlrpc.client import ServerProxy as RPCClient
 from django.core.management.base import BaseCommand
 from django.contrib.auth import get_user_model
 from xmltodict import parse
-from ungleich_common.ldap.ldap_manager import LdapManager
 
 from opennebula.models import VM as VMModel
 
-
-def find_user_based_on_email(users, email):
-    for user in users:
-        if email in user.mail.values:
-            return user
+from django_auth_ldap.backend import LDAPBackend
 
 
 class Command(BaseCommand):
@@ -26,39 +21,29 @@ class Command(BaseCommand):
         pass
 
     def handle(self, *args, **options):
-        ldap_server_uri = secrets.LDAP_SERVER_URI.split(',')[0]
-        ldap_manager = LdapManager(
-            server=ldap_server_uri,
-            admin_dn=secrets.LDAP_ADMIN_DN,
-            admin_password=secrets.LDAP_ADMIN_PASSWORD,
-        )
-        users = ldap_manager.get('')  # Get all users
-
         with RPCClient(secrets.OPENNEBULA_URL) as rpc_client:
             success, response, *_ = rpc_client.one.vmpool.infoextended(
                 secrets.OPENNEBULA_USER_PASS, -2, -1, -1, -1
             )
             if success:
                 vms = json.loads(json.dumps(parse(response)))['VM_POOL']['VM']
-                unknown_user_with_email = set()
+                unknown_user = set()
+
+                backend = LDAPBackend()
 
                 for vm in vms:
                     vm_id = vm['ID']
-                    vm_owner_email = vm['UNAME']
+                    vm_owner = vm['UNAME']
+
+                    user = backend.populate_user(username=vm_owner)
 
-                    user = find_user_based_on_email(users, vm_owner_email)
                     if not user:
-                        unknown_user_with_email.add(vm_owner_email)
+                        unknown_user.add(vm_owner)
                     else:
-                        try:
-                            user_in_db = get_user_model().objects.get(email=vm_owner_email)
-                        except get_user_model().DoesNotExist:
-                            user_in_db = get_user_model().objects.create_user(username=user.uid, email=vm_owner_email)
                         VMModel.objects.update_or_create(
-                            id=f'opennebula{vm_id}',
-                            defaults={'data': vm, 'owner': user_in_db}
+                            vmid=vm_id,
+                            defaults={'data': vm, 'owner': user}
                         )
-                print('User with email but not found in ldap:', unknown_user_with_email)
+                print('User not found in ldap:', unknown_user)
             else:
                 print(response)
-                print(secrets.OPENNEBULA_USER_PASS)

uncloud/opennebula/migrations/0004_auto_20200225_1816.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.0.3 on 2020-02-25 18:16
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('opennebula', '0003_auto_20200225_1428'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='vm',
+            name='id',
+        ),
+        migrations.AddField(
+            model_name='vm',
+            name='vmid',
+            field=models.IntegerField(default=42, primary_key=True, serialize=False),
+            preserve_default=False,
+        ),
+    ]

uncloud/opennebula/models.py

@@ -5,7 +5,7 @@ from django.contrib.postgres.fields import JSONField
 
 
 class VM(models.Model):
-    id = models.CharField(primary_key=True, editable=True, default=uuid.uuid4, unique=True, max_length=64)
+    vmid = models.IntegerField(primary_key=True)
     owner = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
     data = JSONField()
 
@@ -34,7 +34,6 @@ class VM(models.Model):
         disks = []
 
         if 'DISK' in self.data['TEMPLATE']:
-
             if type(self.data['TEMPLATE']['DISK']) is dict:
                 disks = [ self.data['TEMPLATE']['DISK'] ]
             else:

uncloud/requirements.txt

@@ -3,4 +3,4 @@ djangorestframework
 django-auth-ldap
 stripe
 xmltodict
-git+https://code.ungleich.ch/ahmedbilal/ungleich-common/#egg=ungleich-common-ldap&subdirectory=ldap
+psycopg2

uncloud/uncloud/settings.py

@@ -18,7 +18,7 @@ import ldap
 # Uncommitted file with secrets
 import uncloud.secrets
 
-from django_auth_ldap.config import LDAPSearch
+from django_auth_ldap.config import LDAPSearch, LDAPSearchUnion
 
 # Uncommitted file with local settings i.e logging
 try:
@@ -62,6 +62,7 @@ INSTALLED_APPS = [
     'rest_framework',
     'uncloud_api',
     'uncloud_auth',
+    'uncloud_vm',
     'opennebula'
 ]
 
@@ -129,9 +130,7 @@ AUTH_LDAP_USER_ATTR_MAP = {
 AUTH_LDAP_BIND_DN = uncloud.secrets.LDAP_ADMIN_DN
 AUTH_LDAP_BIND_PASSWORD = uncloud.secrets.LDAP_ADMIN_PASSWORD
 
-AUTH_LDAP_USER_SEARCH = LDAPSearch(
-    "dc=ungleich,dc=ch", ldap.SCOPE_SUBTREE, "(uid=%(user)s)"
-)
+AUTH_LDAP_USER_SEARCH = LDAPSearch("dc=ungleich,dc=ch", ldap.SCOPE_SUBTREE, "(uid=%(user)s)")
 
 
 ################################################################################

uncloud/uncloud/urls.py

@@ -17,21 +17,28 @@ from django.contrib import admin
 from django.urls import path, include
 
 from rest_framework import routers
-from uncloud_api import views
 
+from uncloud_api import views as apiviews
+from uncloud_vm import views as vmviews
 from opennebula import views as oneviews
 
 router = routers.DefaultRouter()
-router.register(r'users', views.UserViewSet)
-router.register(r'groups', views.GroupViewSet)
-router.register(r'opennebula', oneviews.VMViewSet, basename='opennebula')
-router.register(r'opennebula_raw', oneviews.RawVMViewSet)
+
+router.register(r'user', apiviews.UserViewSet, basename='user')
+
+router.register(r'vm/snapshot', apiviews.VMSnapshotView, basename='VMSnapshot')
+router.register(r'vm/vm', vmviews.VMProductViewSet, basename='vmproduct')
+
+# admin/staff urls
+router.register(r'admin/vmhost', vmviews.VMHostViewSet)
+router.register(r'admin/opennebula', oneviews.VMViewSet, basename='opennebula')
+router.register(r'admin/opennebula_raw', oneviews.RawVMViewSet)
+
 
 # Wire up our API using automatic URL routing.
 # Additionally, we include login URLs for the browsable API.
 urlpatterns = [
     path('', include(router.urls)),
-    path('admin/', admin.site.urls),
-    path('products/', views.ProductsView.as_view(), name='products'),
-    path('api-auth/', include('rest_framework.urls', namespace='rest_framework'))
+    path('admin/', admin.site.urls), # login to django itself
+    path('api-auth/', include('rest_framework.urls', namespace='rest_framework')) # for login to REST API
 ]

uncloud/uncloud_api/migrations/0001_initial.py

@@ -19,7 +19,7 @@ class Migration(migrations.Migration):
             name='VMSnapshotProduct',
             fields=[
                 ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
-                ('status', models.CharField(choices=[('pending', 'Pending'), ('being_created', 'Being created'), ('created_active', 'Created'), ('deleted', 'Deleted')], default='pending', max_length=256)),
+                ('status', models.CharField(choices=[('pending', 'Pending'), ('being_created', 'Being created'), ('active', 'Active'), ('deleted', 'Deleted')], default='pending', max_length=256)),
                 ('gb_ssd', models.FloatField()),
                 ('gb_hdd', models.FloatField()),
                 ('owner', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),

uncloud/uncloud_api/migrations/0002_vmsnapshotproduct_vm_uuid.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.3 on 2020-02-25 18:16
+
+from django.db import migrations, models
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_api', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='vmsnapshotproduct',
+            name='vm_uuid',
+            field=models.UUIDField(default=uuid.uuid4, editable=False),
+        ),
+    ]

uncloud/uncloud_api/migrations/0003_auto_20200225_1950.py

@@ -0,0 +1,36 @@
+# Generated by Django 3.0.3 on 2020-02-25 19:50
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('uncloud_api', '0002_vmsnapshotproduct_vm_uuid'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='vmsnapshotproduct',
+            name='gb_hdd',
+            field=models.FloatField(editable=False),
+        ),
+        migrations.AlterField(
+            model_name='vmsnapshotproduct',
+            name='gb_ssd',
+            field=models.FloatField(editable=False),
+        ),
+        migrations.AlterField(
+            model_name='vmsnapshotproduct',
+            name='owner',
+            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='vmsnapshotproduct',
+            name='vm_uuid',
+            field=models.UUIDField(),
+        ),
+    ]

uncloud/uncloud_api/models.py

@@ -34,7 +34,8 @@ from django.contrib.auth import get_user_model
 class Product(models.Model):
     uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
     owner = models.ForeignKey(get_user_model(),
-                              on_delete=models.CASCADE)
+                              on_delete=models.CASCADE,
+                              editable=False)
 
     # override these fields by default
 
@@ -45,12 +46,18 @@ class Product(models.Model):
                               choices = (
                                   ('pending', 'Pending'),
                                   ('being_created', 'Being created'),
-                                  ('created_active', 'Created'),
+                                  ('active', 'Active'),
                                   ('deleted', 'Deleted')
                               ),
                               default='pending'
     )
 
+    # This is calculated by each product and saved in the DB
+    recurring_price = models.FloatField(editable=False)
+    one_time_price = models.FloatField(editable=False)
+
+    # FIXME: need recurring_time_frame
+
     class Meta:
         abstract = True
 
@@ -62,6 +69,14 @@ class VMSnapshotProduct(Product):
     price_per_gb_ssd = 0.35
     price_per_gb_hdd = 1.5/100
 
+    # This we need to get from the VM
+    gb_ssd = models.FloatField(editable=False)
+    gb_hdd = models.FloatField(editable=False)
+
+    vm_uuid = models.UUIDField()
+
+    # Need to setup recurring_price and one_time_price and recurring period
+
     sample_ssd = 10
     sample_hdd = 100
 
@@ -92,8 +107,10 @@ Sample price for a VM with {} GB SSD and {} GB HDD VM is: {}.
 """.format(cls.price_per_gb_ssd, cls.price_per_gb_hdd,
            cls.sample_ssd, cls.sample_hdd, cls.sample_price())
 
-    gb_ssd = models.FloatField()
-    gb_hdd = models.FloatField()
+
+
+
+
 
 
 
@@ -120,13 +137,3 @@ class Feature(models.Model):
 
     def __str__(self):
         return "'{}' - '{}'".format(self.product, self.name)
-
-
-# class Order(models.Model):
-#     uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
-
-#     owner = models.ForeignKey(get_user_model(),
-#                               on_delete=models.CASCADE)
-
-#     product = models.ForeignKey(Product,
-#                                 on_delete=models.CASCADE)

uncloud/uncloud_api/serializers.py

@@ -3,17 +3,24 @@ from django.contrib.auth import get_user_model
 
 from rest_framework import serializers
 
+from .models import VMSnapshotProduct
 
-class UserSerializer(serializers.HyperlinkedModelSerializer):
+class UserSerializer(serializers.ModelSerializer):
     class Meta:
         model = get_user_model()
-        fields = ['url', 'username', 'email', 'groups']
-
+        fields = ['url', 'username', 'email']
 
 class GroupSerializer(serializers.HyperlinkedModelSerializer):
     class Meta:
         model = Group
         fields = ['url', 'name']
 
-class VMSnapshotSerializer(serializers.Serializer):
-    pass
+class VMSnapshotSerializer(serializers.HyperlinkedModelSerializer):
+    class Meta:
+        model = VMSnapshotProduct
+        fields = ['uuid', 'status', 'recurring_price', 'one_time_price' ]
+
+class VMSnapshotCreateSerializer(serializers.HyperlinkedModelSerializer):
+    class Meta:
+        model = VMSnapshotProduct
+        fields = '__all__'

uncloud/uncloud_api/views.py

@@ -3,49 +3,18 @@ from django.contrib.auth import get_user_model
 from django.contrib.auth.models import Group
 
 from rest_framework import viewsets, permissions, generics
-from .serializers import UserSerializer, GroupSerializer
+
 from rest_framework.views import APIView
 from rest_framework.response import Response
 
-
-class CreditCardViewSet(viewsets.ModelViewSet):
-
-    """
-    API endpoint that allows credit cards to be listed
-    """
-    queryset = get_user_model().objects.all().order_by('-date_joined')
-    serializer_class = UserSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
+from uncloud_vm.models import VMProduct
+from .models import VMSnapshotProduct
+from .serializers import UserSerializer, GroupSerializer, VMSnapshotSerializer, VMSnapshotCreateSerializer
 
 
-class UserViewSet(viewsets.ModelViewSet):
-
-    """
-    API endpoint that allows users to be viewed or edited.
-    """
-    queryset = get_user_model().objects.all().order_by('-date_joined')
-    serializer_class = UserSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
-
-class GroupViewSet(viewsets.ModelViewSet):
-    """
-    API endpoint that allows groups to be viewed or edited.
-    """
-    queryset = Group.objects.all()
-    serializer_class = GroupSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
-
-class GroupViewSet(viewsets.ModelViewSet):
-    """
-    API endpoint that allows groups to be viewed or edited.
-    """
-    queryset = Group.objects.all()
-    serializer_class = GroupSerializer
-
-    permission_classes = [permissions.IsAuthenticated]
+import inspect
+import sys
+import re
 
 
 # POST /vm/snapshot/ vmuuid=... => create snapshot, returns snapshot uuid
@@ -53,31 +22,73 @@ class GroupViewSet(viewsets.ModelViewSet):
 # DEL /vm/snapshot/<uuid:uuid> => delete
 # create-list -> get, post => ListCreateAPIView
 # del on other!
-class VMSnapshotView(generics.ListCreateAPIView):
-    #lookup_field = 'uuid'
+class VMSnapshotView(viewsets.ViewSet):
     permission_classes = [permissions.IsAuthenticated]
 
-import inspect
-import sys
-import re
+    def list(self, request):
+        queryset = VMSnapshotProduct.objects.filter(owner=request.user)
+        serializer = VMSnapshotSerializer(queryset, many=True, context={'request': request})
+        return Response(serializer.data)
 
-# Next: create /order/<productname> urls
-# Next: strip off "Product" at the end
-class ProductsView(APIView):
-    def get(self, request, format=None):
-        clsmembers = inspect.getmembers(sys.modules['uncloud_api.models'], inspect.isclass)
-        products = []
-        for name, c in clsmembers:
-            # Include everything that ends in Product, but not Product itself
-            m = re.match(r'(?P<pname>.+)Product$', name)
-            if m:
-                products.append({
-                    'name': m.group('pname'),
-                    'description': c.description,
-                    'recurring_period': c.recurring_period,
-                    'pricing_model': c.pricing_model()
-                }
-                )
+    def retrieve(self, request, pk=None):
+        queryset = VMSnapshotProduct.objects.filter(owner=request.user)
+        vm = get_object_or_404(queryset, pk=pk)
+        serializer = VMSnapshotSerializer(vm, context={'request': request})
+        return Response(serializer.data)
+
+    def create(self, request):
+        print(request.data)
+        serializer = VMSnapshotCreateSerializer(data=request.data)
+
+        serializer.gb_ssd = 12
+        serializer.gb_hdd = 120
+        print("F")
+        serializer.is_valid(raise_exception=True)
+
+        print(serializer)
+        print("A")
+        serializer.save()
+        print("B")
 
 
-        return Response(products)
+        # snapshot = VMSnapshotProduct(owner=request.user,
+        #                              **serialzer.data)
+
+        return Response(serializer.data)
+
+
+
+# maybe drop or not --- we need something to guide the user!
+# class ProductsViewSet(viewsets.ViewSet):
+#     permission_classes = [permissions.IsAuthenticated]
+
+#     def list(self, request):
+
+#         clsmembers = []
+#         for modules in [ 'uncloud_api.models', 'uncloud_vm.models' ]:
+#             clsmembers.extend(inspect.getmembers(sys.modules[modules], inspect.isclass))
+
+
+#         products = []
+#         for name, c in clsmembers:
+#             # Include everything that ends in Product, but not Product itself
+#             m = re.match(r'(?P<pname>.+)Product$', name)
+#             if m:
+#                 products.append({
+#                     'name': m.group('pname'),
+#                     'description': c.description,
+#                     'recurring_period': c.recurring_period,
+#                     'pricing_model': c.pricing_model()
+#                 }
+#                 )
+
+
+#         return Response(products)
+
+
+class UserViewSet(viewsets.ModelViewSet):
+    serializer_class = UserSerializer
+    permission_classes = [permissions.IsAuthenticated]
+
+    def get_queryset(self):
+        return self.request.user

uncloud/uncloud_vm/management/commands/schedulevms.py

@@ -0,0 +1,21 @@
+import json
+
+import uncloud.secrets as secrets
+
+from django.core.management.base import BaseCommand
+from django.contrib.auth import get_user_model
+
+from uncloud_vm.models import VMProduct, VMHost
+
+class Command(BaseCommand):
+    help = 'Select VM Host for VMs'
+
+    def add_arguments(self, parser):
+        pass
+
+    def handle(self, *args, **options):
+        pending_vms = VMProduct.objects.filter(vmhost__isnull=True)
+        vmhosts = VMHost.objects.filter(status='active')
+        for vm in pending_vms:
+            print(vm)
+            # FIXME: implement smart placement

uncloud/uncloud_vm/management/commands/vmhealth.py

@@ -0,0 +1,26 @@
+import json
+
+from django.core.management.base import BaseCommand
+from django.contrib.auth import get_user_model
+
+from uncloud_vm.models import VMProduct, VMHost
+
+class Command(BaseCommand):
+    help = 'Check health of VMs and VMHosts'
+
+    def add_arguments(self, parser):
+        pass
+
+    def handle(self, *args, **options):
+        pending_vms = VMProduct.objects.filter(vmhost__isnull=True)
+        vmhosts = VMHost.objects.filter(status='active')
+
+        # 1. Check that all active hosts reported back N seconds ago
+        # 2. Check that no VM is running on a dead host
+        # 3. Migrate VMs if necessary
+        # 4. Check that no VMs have been pending for longer than Y seconds
+
+        # If VM snapshots exist without a VM -> notify user (?)
+
+
+        print("Nothing is good, you should implement me")

uncloud/uncloud_vm/migrations/0001_initial.py

@@ -0,0 +1,75 @@
+# Generated by Django 3.0.3 on 2020-02-25 19:50
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='VMDiskProduct',
+            fields=[
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('size_in_gb', models.FloatField()),
+                ('storage_class', models.CharField(choices=[('hdd', 'HDD'), ('ssd', 'SSD')], default='ssd', max_length=32)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='VMHost',
+            fields=[
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('hostname', models.CharField(max_length=253)),
+                ('physical_cores', models.IntegerField()),
+                ('usable_cores', models.IntegerField()),
+                ('usable_ram_in_gb', models.FloatField()),
+                ('status', models.CharField(choices=[('pending', 'Pending'), ('active', 'Active'), ('unusable', 'Unusable')], default='pending', max_length=32)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='VMProduct',
+            fields=[
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('cores', models.IntegerField()),
+                ('ram_in_gb', models.FloatField()),
+                ('owner', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+                ('vmhost', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMHost')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='OperatingSystemDisk',
+            fields=[
+                ('vmdiskproduct_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='uncloud_vm.VMDiskProduct')),
+                ('os_name', models.CharField(max_length=128)),
+            ],
+            bases=('uncloud_vm.vmdiskproduct',),
+        ),
+        migrations.CreateModel(
+            name='VMWithOSProduct',
+            fields=[
+                ('vmproduct_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='uncloud_vm.VMProduct')),
+            ],
+            bases=('uncloud_vm.vmproduct',),
+        ),
+        migrations.CreateModel(
+            name='VMNetworkCard',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('mac_address', models.IntegerField()),
+                ('vm', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMProduct')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='vmdiskproduct',
+            name='vm',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMProduct'),
+        ),
+    ]

uncloud/uncloud_vm/migrations/0002_auto_20200225_1952.py

@@ -0,0 +1,38 @@
+# Generated by Django 3.0.3 on 2020-02-25 19:52
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='vmhost',
+            name='hostname',
+            field=models.CharField(max_length=253, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='vmhost',
+            name='physical_cores',
+            field=models.IntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='vmhost',
+            name='status',
+            field=models.CharField(choices=[('pending', 'Pending'), ('active', 'Active'), ('unusable', 'Unusable'), ('deleted', 'Deleted')], default='pending', max_length=32),
+        ),
+        migrations.AlterField(
+            model_name='vmhost',
+            name='usable_cores',
+            field=models.IntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='vmhost',
+            name='usable_ram_in_gb',
+            field=models.FloatField(default=0),
+        ),
+    ]

uncloud/uncloud_vm/migrations/0003_auto_20200225_2028.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.3 on 2020-02-25 20:28
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0002_auto_20200225_1952'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='vmproduct',
+            name='vmhost',
+            field=models.ForeignKey(blank=True, editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMHost'),
+        ),
+    ]

uncloud/uncloud_vm/models.py

@@ -1,12 +1,73 @@
 from django.db import models
+from django.contrib.auth import get_user_model
+import uuid
 
 
-class VM(models.Model):
+class VMHost(models.Model):
     uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
-    owner = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
+
+    # 253 is the maximum DNS name length
+    hostname = models.CharField(max_length=253, unique=True)
+
+    # indirectly gives a maximum number of cores / VM - f.i. 32
+    physical_cores = models.IntegerField(default=0)
+
+    # determines the maximum usable cores - f.i. 320 if you overbook by a factor of 10
+    usable_cores = models.IntegerField(default=0)
+
+    # ram that can be used of the server
+    usable_ram_in_gb = models.FloatField(default=0)
+
+
+    status = models.CharField(max_length=32,
+                              choices = (
+                                  ('pending', 'Pending'),
+                                  ('active', 'Active'),
+                                  ('unusable', 'Unusable'),
+                                  ('deleted', 'Deleted'),
+                              ),
+                              default='pending'
+    )
+
+
+class VMProduct(models.Model):
+    uuid = models.UUIDField(primary_key=True,
+                            default=uuid.uuid4,
+                            editable=False)
+    owner = models.ForeignKey(get_user_model(),
+                              on_delete=models.CASCADE,
+                              editable=False)
+    vmhost   = models.ForeignKey(VMHost,
+                                 on_delete=models.CASCADE,
+                                 editable=False,
+                                 blank=True,
+                                 null=True)
 
     cores = models.IntegerField()
-    ram = models.FloatField()
+    ram_in_gb = models.FloatField()
 
 
-class VMDisk(models.Model):
+class VMWithOSProduct(VMProduct):
+    pass
+
+class VMDiskProduct(models.Model):
+    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    vm   = models.ForeignKey(VMProduct, on_delete=models.CASCADE)
+    size_in_gb = models.FloatField()
+
+    storage_class = models.CharField(max_length=32,
+                              choices = (
+                                  ('hdd', 'HDD'),
+                                  ('ssd', 'SSD'),
+                              ),
+                              default='ssd'
+    )
+
+class OperatingSystemDisk(VMDiskProduct):
+    """ Defines an Operating System Disk that can be cloned for a VM """
+    os_name = models.CharField(max_length=128)
+
+
+class VMNetworkCard(models.Model):
+    vm   = models.ForeignKey(VMProduct, on_delete=models.CASCADE)
+    mac_address = models.IntegerField()

uncloud/uncloud_vm/serializers.py

@@ -0,0 +1,15 @@
+from django.contrib.auth import get_user_model
+
+from rest_framework import serializers
+from .models import VMHost, VMProduct
+
+class VMHostSerializer(serializers.HyperlinkedModelSerializer):
+    class Meta:
+        model = VMHost
+        fields = '__all__'
+
+
+class VMProductSerializer(serializers.HyperlinkedModelSerializer):
+    class Meta:
+        model = VMProduct
+        fields = '__all__'

uncloud/uncloud_vm/tests.py

@@ -1,3 +0,0 @@
-from django.test import TestCase
-
-# Create your tests here.

uncloud/uncloud_vm/views.py

@@ -1,24 +1,29 @@
 from django.shortcuts import render
 
-
 from django.contrib.auth.models import User
 from django.shortcuts import get_object_or_404
-from myapps.serializers import UserSerializer
-from rest_framework import viewsets
+
+from rest_framework import viewsets, permissions
 from rest_framework.response import Response
 
-from opennebula.models import VM as OpenNebulaVM
+from .models import VMHost, VMProduct
+from .serializers import VMHostSerializer, VMProductSerializer
 
-class VMViewSet(viewsets.ViewSet):
-    def list(self, request):
-        queryset = User.objects.all()
-        serializer = UserSerializer(queryset, many=True)
-        return Response(serializer.data)
-
-    def retrieve(self, request, pk=None):
-        queryset = User.objects.all()
-        user = get_object_or_404(queryset, pk=pk)
-        serializer = UserSerializer(user)
-        return Response(serializer.data)
+class VMHostViewSet(viewsets.ModelViewSet):
+    serializer_class = VMHostSerializer
+    queryset = VMHost.objects.all()
+    permission_classes = [permissions.IsAdminUser]
 
+class VMProductViewSet(viewsets.ModelViewSet):
     permission_classes = [permissions.IsAuthenticated]
+    serializer_class = VMProductSerializer
+
+    def get_queryset(self):
+        return VMProduct.objects.filter(owner=self.request.user)
+
+    def create(self, request):
+        serializer = VMProductSerializer(data=request.data, context={'request': request})
+        serializer.is_valid(raise_exception=True)
+        serializer.save(owner=request.user)
+
+        return Response(serializer.data)