merged

circle/celeryconfig.py

+#
+CELERY_RESULT_BACKEND = 'amqp://'
+CELERY_TASK_RESULT_EXPIRES = 300
+CELERY_TIMEZONE = 'UTC'
+CELERY_ENABLE_UTC = True
+CELERY_ACCEPT_CONTENT = ['json', 'pickle_v2', 'pickle']
+CELERY_TASK_SERIALIZER = 'json'
+CELERY_RESULT_SERIALIZER = 'pickle_v2'
+CELERY_STORE_ERRORS_EVEN_IF_IGNORED = True
+
+
+

circle/circle/settings/base.py

@@ -497,6 +497,8 @@ if get_env_variable('DJANGO_SAML', 'FALSE') == 'TRUE':
                 'required_attributes': required_attrs,
                 'optional_attributes': optional_attrs,
                 'want_response_signed': False,
+                "logout_requests_signed": True,
+                "logout_responses_signed": True,
             },
         },
         'metadata': {'local': [remote_metadata], },

circle/common/models.py

@@ -24,6 +24,7 @@ from logging import getLogger
 from time import time
 from warnings import warn
 
+from django.apps import apps
 from django.contrib import messages
 from django.contrib.auth.models import User
 from django.core.cache import cache
@@ -245,9 +246,51 @@ class ActivityModel(TimeStampedModel):
 def compute_cached(method, instance, memcached_seconds,
                    key, start, *args, **kwargs):
     """Compute and store actual value of cached method."""
+    def _resolve_instance(instance_ref):
+        """
+        Accpted forms:
+          - (ModelClass, pk)                     # legacy (pickle)
+          - ("app_label.ModelName", pk)          # JSON-safe tuple
+          - {"model": "app_label.ModelName", "pk": pk}  # JSON-safe dict
+          - {"model": "...", "id": pk}           # 'id' key
+        """
+        # dict forma
+        if isinstance(instance_ref, dict):
+            model_label = instance_ref.get('model')
+            pk = instance_ref.get('pk', instance_ref.get('id'))
+            if not model_label or pk is None:
+                raise TypeError("Bad instance_ref dict: %r" % (instance_ref,))
+            Model = apps.get_model(model_label)
+            if Model is None:
+                raise LookupError("Unknown model label: %r" % (model_label,))
+            return Model.objects.get(pk=pk)
+
+        # tuple/list forma
+        if isinstance(instance_ref, (tuple, list)) and len(instance_ref) == 2:
+            model_ref, pk = instance_ref
+            # legacy: ModelClass
+            try:
+                from django.db.models.base import ModelBase
+                if isinstance(model_ref, ModelBase):
+                    Model = model_ref
+                else:
+                    # "app_label.ModelName"
+                    Model = apps.get_model(model_ref)
+            except Exception:
+                # if no ModelBase or the model_ref in not a class
+                Model = apps.get_model(model_ref)
+            if Model is None:
+                raise LookupError("Unknown model reference: %r" % (model_ref,))
+            return Model.objects.get(pk=pk)
+
+        raise TypeError("Unsupported instance_ref: %r" % (instance_ref,))
+
     if isinstance(method, basestring):
-        model, id = instance
-        instance = model.objects.get(id=id)
+        # instance from any of the accepted forms
+        _inst = _resolve_instance(instance)
+        # the model came from the instance
+        model = _inst.__class__
+        instance = _inst
         try:
             method = getattr(model, method)
             while hasattr(method, '_original') or hasattr(method, 'fget'):
@@ -331,10 +374,12 @@ def method_cache(memcached_seconds=60, instance_seconds=5):  # noqa
                 logger.debug("caches expiring, compute async")
                 cache.set("%s.cached" % key, 1, memcached_seconds * 0.5)
                 try:
+                    instance_ref = (instance._meta.label, instance.id)   # biztosan tuple
                     compute_cached.apply_async(
                         queue='localhost.man', kwargs=kwargs, args=[
-                            method_name, (instance.__class__, instance.id),
+                            method_name, instance_ref,
                             memcached_seconds, key, time()] + list(args))
+#                            method_name, (instance.__class__, instance.id),
                 except:
                     logger.exception("Couldnt compute async %s", method_name)
 

circle/common/operations.py

@@ -125,6 +125,129 @@ class Operation(object):
         """
         raise NotImplementedError
 
+    @staticmethod
+    def __find_not_jsonable(obj, path="$", seen=None):
+        # --- normalize path to string (handles tuple too) ---
+        if not isinstance(path, basestring):
+            try:
+                path = unicode(path)
+            except Exception:
+                path = str(path)
+    
+        if seen is None:
+            seen = set()
+    
+        import types
+        from decimal import Decimal
+        from datetime import datetime, date
+        try:
+            from django.db import models
+            from django.db.models.query import QuerySet
+            from django.utils.functional import Promise
+        except Exception:
+            models = QuerySet = Promise = None
+    
+        if obj is None or isinstance(obj, (bool, int, long, float, basestring)):
+            return None
+    
+        oid = id(obj)
+        if oid in seen:
+            return u"%s (seen)" % (path,)
+        seen.add(oid)
+
+        if models and isinstance(obj, models.Model):
+            return u"%s (Django Model)" % (path,)
+        if QuerySet and isinstance(obj, QuerySet):
+            return u"%s (QuerySet)" % (path,)
+        if isinstance(obj, (datetime, date)):
+            return u"%s (datetime/date)" % (path,)
+        if isinstance(obj, Decimal):
+            return u"%s (Decimal)" % (path,)
+        if Promise and isinstance(obj, Promise):
+            return u"%s (Promise/lazy)" % (path,)
+        if isinstance(obj, set):
+            return u"%s (set)" % (path,)
+        if hasattr(obj, "__call__"):
+            return u"%s (callable)" % (path,)
+    
+        if isinstance(obj, dict):
+            bad_s = u""
+            bad_b = None
+            for k, v in obj.iteritems():
+                kstr = k if isinstance(k, basestring) else unicode(k)
+                bad = Operation.__find_not_jsonable(v, u"%s[%r]" % (path, kstr), seen)
+                if bad:
+                    if bad_b:
+                        bad_s = u"%s, %s" % (bad_s, bad)
+                    else:
+                        bad_s = bad
+                    bad_b = True
+
+            if bad_b:
+                return bad_s
+            return None
+    
+        if isinstance(obj, (list, tuple)):
+            bad_s = u""
+            bad_b = None
+            for i, v in enumerate(obj):
+                bad = Operation.__find_not_jsonable(v, u"%s[%d]" % (path, i), seen)
+                if bad:
+                    if bad_b:
+                        bad_s = u"%s, %s" % (bad_s, bad)
+                    else:
+                        bad_s = bad
+                    bad_b = True
+
+            if bad_b:
+                return bad_s
+            return None
+    
+        return u"%s (%s)" % (path, obj.__class__.__name__)
+    
+    def __to_jsonable(x, seen=None):
+        if seen is None: seen = set()
+        oid = id(x)
+        if oid in seen:
+            return '<cycle>'
+        seen.add(oid)
+    
+        import types
+        from decimal import Decimal
+        from datetime import datetime, date
+        try:
+            from django.db import models
+            from django.db.models.query import QuerySet
+            from django.utils.functional import Promise
+        except Exception:
+            models = QuerySet = Promise = None
+    
+        if x is None or isinstance(x, (bool, int, long, float, basestring)):
+            return x
+        if models and isinstance(x, models.Model):
+            return getattr(x, 'pk', None)
+        if QuerySet and isinstance(x, QuerySet):
+            return list(x.values_list('pk', flat=True))
+        if isinstance(x, (datetime, date)):
+            return x.isoformat()
+        if isinstance(x, Decimal):
+            return str(x)
+        if isinstance(x, set):
+            return [to_jsonable(v, seen) for v in x]
+        if Promise and isinstance(x, Promise):
+            return unicode(x)  # lazy evaluation
+        if isinstance(x, dict):
+            out = {}
+            for k, v in x.iteritems():
+                k = k if isinstance(k, basestring) else unicode(k)
+                out[k] = to_jsonable(v, seen)
+            return out
+        if isinstance(x, (list, tuple)):
+            return [to_jsonable(v, seen) for v in x]
+        if hasattr(x, "__call__"):
+            return getattr(x, "__name__", repr(x))
+        return repr(x)
+
     def async(self, **kwargs):
         """Execute the operation asynchronously.
 
@@ -135,13 +258,34 @@ class Operation(object):
 
         For more information, check the synchronous call's documentation.
         """
+        from common.transport import to_wire
+
         logger.info("%s called asynchronously on %s with the following "
-                    "parameters: %r", self.__class__.__name__, self.subject,
+                    "queue: %r parameters: %r", self.__class__.__name__, self.subject, self.async_queue, 
                     kwargs)
         activity, allargs, auxargs = self.__prelude(kwargs)
-        return self.async_operation.apply_async(
-            args=(self.id, self.subject.pk, activity.pk, allargs, auxargs, ),
-            queue=self.async_queue)
+        bad = self.__find_not_jsonable((allargs, auxargs))
+        if bad:
+            logger.info("JSON-inkompatibility element: %s", bad)
+
+        sid = getattr(self, 'subject_id', None) or self.subject.pk
+        aid = getattr(activity, 'id', None) or activity.pk
+        
+        allargs_wire = to_wire(allargs)
+        auxargs_wire  = to_wire(auxargs)
+        logger.info("allargs_wire keys: %r", sorted(allargs_wire.keys()))
+        logger.info("auxargs_wire keys: %r", sorted(auxargs_wire.keys()))
+        import json
+        preview = json.dumps(allargs_wire, default=str, ensure_ascii=False)[:500]
+        logger.info("allargs JSON preview: %s", preview)
+       
+ 
+        async_ret = self.async_operation.apply_async(
+            args=(self.id, sid, aid, allargs_wire, auxargs_wire),
+            queue=self.async_queue,
+        )
+        logger.info("async_ret %r", async_ret)
+        return async_ret
 
     def call(self, **kwargs):
         """Execute the operation (synchronously).

circle/common/serializers.py

+# serializers.py  
+from kombu.serialization import register
+import pickle
+
+def pickle_v2_dumps(obj):
+    return pickle.dumps(obj, protocol=2)
+
+def pickle_v2_loads(s):
+    return pickle.loads(s)
+
+register(
+    'pickle_v2',
+    pickle_v2_dumps,
+    pickle_v2_loads,
+    content_type='application/x-pickle',
+    content_encoding='binary',
+)
+

circle/common/transport.py

+# -*- coding: utf-8 -*-
+# circle/common/transport.py
+
+from django.db import models
+from django.db.models.query import QuerySet
+from django.utils.functional import SimpleLazyObject, Promise
+from datetime import datetime, date
+from decimal import Decimal
+from django.apps import apps
+
+# Global keys
+GLOBAL_MODEL_FIELDS = {
+    'user': 'auth.User',
+    'node': 'vm.Node',
+    'to_node': 'vm.Node',
+    'instance': 'vm.Instance',
+    'activity': 'vm.InstanceActivity',
+    'vlan':     'firewall.Vlan',
+}
+MODEL_TAG_KEY = '__model__'
+
+def _merge_fields(extra):
+    """extra: dict or None. Returna an usable mapping (global + override)."""
+    mf = GLOBAL_MODEL_FIELDS.copy()
+    if extra:
+        mf.update(extra)
+    return mf
+
+def _model_label(obj):
+    # "app_label.ModelName"
+    return obj._meta.app_label + '.' + obj.__class__.__name__
+
+def to_wire(data, model_fields=None):
+    """Recursive JSON-friendly encoder
+    - model_fields: opcional dict {key -> 'app_label.ModelName'} – per-message
+    - known Django model -> pk
+    - unknown Django model -> {__model__: "app.Model", pk: <id>}
+    - QuerySet -> [pk, ...]
+    - datetime/date -> ISO
+    - Decimal -> str
+    - set -> list
+    - keys -> always strings (JSON)
+    """
+    mf = _merge_fields(model_fields)
+
+    if data is None or isinstance(data, (bool, int, long, float, basestring)):
+        return data
+
+    if isinstance(data, models.Model):
+        return {MODEL_TAG_KEY: _model_label(data), 'pk': data.pk}
+
+    if isinstance(data, SimpleLazyObject):
+        # example: request.user – 
+        try:
+            return to_wire(data._wrapped, model_fields=mf)
+        except Exception:
+            return to_wire(data.__dict__, model_fields=mf)
+
+    if isinstance(data, QuerySet):
+        return list(data.values_list('pk', flat=True))
+
+    if isinstance(data, (datetime, date)):
+        return data.isoformat()
+
+    if isinstance(data, Decimal):
+        return str(data)
+
+    if isinstance(data, set):
+        return [to_wire(v, model_fields=mf) for v in data]
+
+    if isinstance(data, dict):
+        out = {}
+        for k, v in data.iteritems():
+            if not isinstance(k, basestring):
+                k = unicode(k)
+            # If key found in the mapping -> pk
+            if k in mf and isinstance(v, models.Model):
+                out[k] = getattr(v, 'pk', None)
+            else:
+                out[k] = to_wire(v, model_fields=mf)
+        return out
+
+    if isinstance(data, (list, tuple)):
+        return [to_wire(v, model_fields=mf) for v in data]
+
+    if isinstance(data, Promise):
+        return unicode(data)
+
+    if hasattr(data, '__call__'):
+        # bound method/function name – JSON-friendly
+        return getattr(data, '__name__', unicode(data))
+
+    # fallback: reprezentation
+    return unicode(data)
+
+def from_wire(data, model_fields=None):
+    """Recursive JSON-friendly decoder
+     - Django model objects are loaded form Django DB using the MODEL_FIELDS
+    """
+    mf = _merge_fields(model_fields)
+
+
+    # tagged model 
+    if isinstance(data, dict) and MODEL_TAG_KEY in data and 'pk' in data:
+        label = data[MODEL_TAG_KEY]
+        pk = data['pk']
+        Model = apps.get_model(label)
+        return Model.objects.get(pk=pk)
+
+    if isinstance(data, dict):
+        out = {}
+        for k, v in data.iteritems():
+            if k in mf and v is not None:
+                Model = apps.get_model(mf[k])
+                out[k] = Model.objects.get(pk=v)
+            else:
+                out[k] = from_wire(v, model_fields=mf)
+        return out
+
+    if isinstance(data, (list, tuple)):
+        return [from_wire(v, model_fields=mf) for v in data]
+
+    # primitives
+    return data
+

circle/dashboard/forms.py

@@ -659,6 +659,7 @@ class LeaseForm(forms.ModelForm):
             (60 * 60 * 24 * 7, "weeks"),
             (60 * 60 * 24, "days"),
             (60 * 60, "hours"),
+            (60, "minutes"),
         )
         for i, (seconds, name) in enumerate(chunks):
             count = delta_seconds // seconds
@@ -673,7 +674,7 @@ class LeaseForm(forms.ModelForm):
         return re
 
     def generate_fields(self):
-        intervals = ["hours", "days", "weeks", "months"]
+        intervals = ["minutes", "hours", "days", "weeks", "months"]
         methods = ["suspend", "delete"]
         # feels redundant but these lines are so long
         s = (self.instance.suspend_interval.total_seconds()
@@ -698,12 +699,14 @@ class LeaseForm(forms.ModelForm):
         data = self.cleaned_data
 
         suspend_seconds = timedelta(
+            minutes=data['suspend_minutes'],
             hours=data['suspend_hours'],
             days=(data['suspend_days'] + data['suspend_months'] % 12 * 30 +
                   data['suspend_months'] / 12 * 365),
             weeks=data['suspend_weeks'],
         )
         delete_seconds = timedelta(
+            minutes=data['delete_minutes'],
             hours=data['delete_hours'],
             days=(data['delete_days'] + data['delete_months'] % 12 * 30 +
                   data['delete_months'] / 12 * 365),

circle/dashboard/templates/dashboard/enable-two-factor.html

@@ -32,6 +32,7 @@
 {#          <img src="//chart.googleapis.com/chart?chs=255x255&chld=L|0&cht=qr&chl={{ uri }}"/> #}
 	    <img src="{{ uri | qrcode_src }}" with="300"i height=300 alt="{{ uri }}">
 {#          <small><a href="{{ uri }}">{{ uri }}</a></small> #}
+          <small><a href="{{ uri }}">{{ uri }}</a></small>
         </div>
         <hr />
         <div id="two-factor-confirm">

circle/dashboard/views/index.py

@@ -111,7 +111,7 @@ class IndexView(LoginRequiredMixin, TemplateView):
                     quota = store.get_quota()
                     files = {'toplist': toplist, 'quota': quota}
                 except Exception:
-                    logger.exception("Unable to get tolist for %s",
+                    logger.exception("Unable to get toplist for %s",
                                      unicode(self.request.user))
                     files = {'toplist': []}
                 cache.set(cache_key, files, 300)

circle/firewall/models.py

@@ -241,13 +241,15 @@ class Rule(models.Model):
         for foreign_vlan in self.foreign_network.vlans.all():
             if not foreign_vlan.managed:
                 continue
-
-            r = IptRule(priority=self.weight, action=action,
+            try:
+                r = IptRule(priority=self.weight, action=action,
                         proto=self.proto, extra=self.extra,
                         comment='Rule #%s' % self.pk,
                         src=src, dst=dst, dport=self.dport, sport=self.sport)
-            chain_name = self.get_chain_name(local=vlan, remote=foreign_vlan)
-            retval[chain_name] = r
+                chain_name = self.get_chain_name(local=vlan, remote=foreign_vlan)
+                retval[chain_name] = r
+            except: 
+                logger.error("Error in rule #%s", self.pk)
 
         return retval
 

circle/firewall/tasks/local_tasks.py

@@ -36,17 +36,25 @@ def _apply_once(name, tasks, queues, task, data):
     if name not in tasks:
         return
 
-    data = data()
+    logger.info("_apply_once...%s %s", name, queues)
+
+    data = data() # for testing the secondary fw
+
     for queue in queues:
         try:
             task.apply_async(args=data, queue=queue, expires=60).get(timeout=5)
+            logger.info("_apply...%s %s", name, queue)
+#            data = data()
             logger.info("%s configuration is reloaded. (queue: %s)",
                         name, queue)
+#            break
         except TimeoutError as e:
             logger.critical('%s (queue: %s, task: %s)', e, queue, name)
         except:
             logger.critical('Unhandled exception: queue: %s data: %s task: %s',
                             queue, data, name, exc_info=True)
+            logger.info('Unhandled exception: queue: %s data: %s task: %s',
+                            queue, data, name, exc_info=True)
 
 
 def get_firewall_queues():
@@ -95,6 +103,7 @@ def reloadtask_worker():
                 lambda: (vlan(), ))
     _apply_once('blacklist', tasks, firewall_queues, reload_blacklist,
                 lambda: (list(ipset()), ))
+    logger.info("reloadtask_worker: Reloaded %s", ", ".join(tasks))
 
 
 @celery.task

circle/manager/mancelery.py

@@ -16,6 +16,7 @@
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 
 from celery import Celery
+import common.serializers
 from celery.signals import worker_ready
 from celery.schedules import crontab
 from datetime import timedelta
@@ -52,9 +53,9 @@ celery = Celery('manager',
                          'dashboard.tasks.local_periodic_tasks',
                          ])
 
+celery.config_from_object('celeryconfig')
+
 celery.conf.update(
-    CELERY_RESULT_BACKEND='amqp',
-    CELERY_TASK_RESULT_EXPIRES=300,
     CELERY_QUEUES=(
         Queue(HOSTNAME + '.man', Exchange('manager', type='direct'),
               routing_key="manager"),

circle/manager/moncelery.py

@@ -16,6 +16,7 @@
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 
 from celery import Celery
+import common.serializers
 from celery.signals import worker_ready
 from datetime import timedelta
 from kombu import Queue, Exchange
@@ -30,9 +31,9 @@ celery = Celery('monitor',
                          'monitor.tasks.local_periodic_tasks',
                          ])
 
+celery.config_from_object('celeryconfig')
+
 celery.conf.update(
-    CELERY_RESULT_BACKEND='amqp',
-    CELERY_TASK_RESULT_EXPIRES=300,
     CELERY_QUEUES=(
         Queue(QUEUE_NAME, Exchange('monitor', type='direct'),
               routing_key="monitor"),

circle/manager/slowcelery.py

@@ -16,6 +16,7 @@
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 
 from celery import Celery
+import common.serializers
 from celery.signals import worker_ready
 from datetime import timedelta
 from kombu import Queue, Exchange
@@ -32,9 +33,10 @@ celery = Celery('manager.slow',
                          'storage.tasks.periodic_tasks',
                          ])
 
+
+celery.config_from_object('celeryconfig')
+
 celery.conf.update(
-    CELERY_RESULT_BACKEND='amqp',
-    CELERY_TASK_RESULT_EXPIRES=300,
     CELERY_QUEUES=(
         Queue(QUEUE_NAME, Exchange('manager.slow', type='direct'),
               routing_key="manager.slow"),

circle/vm/models/instance.py

@@ -744,8 +744,11 @@ class Instance(AclBase, VirtualMachineDescModel, StatusModel, OperatedMixin,
         interval = self.lease.suspend_interval
         if (self.status != "SUSPENDED" and
                 self.time_of_suspend is not None and interval is not None):
-            limit = timezone.now() + timedelta(seconds=(
-                threshold * self.lease.suspend_interval.total_seconds()))
+            limit = timedelta(seconds=(
+		threshold * self.lease.suspend_interval.total_seconds()))
+            if limit < timedelta(seconds=300):
+	        limit = timedelta(seconds=300) 
+            limit += timezone.now()
             return limit > self.time_of_suspend
         else:
             return False
@@ -753,8 +756,11 @@ class Instance(AclBase, VirtualMachineDescModel, StatusModel, OperatedMixin,
     def _is_delete_expiring(self, threshold=0.1):
         interval = self.lease.delete_interval
         if self.time_of_delete is not None and interval is not None:
-            limit = timezone.now() + timedelta(seconds=(
+            limit = timedelta(seconds=(
                 threshold * self.lease.delete_interval.total_seconds()))
+            if limit < timedelta(seconds=300):
+	        limit = timedelta(seconds=300) 
+            limit += timezone.now()
             return limit > self.time_of_delete
         else:
             return False

circle/vm/operations.py

@@ -65,6 +65,7 @@ class RemoteOperationMixin(object):
 
     def _operation(self, **kwargs):
         args = self._get_remote_args(**kwargs)
+        logger.info("RemoteOpMixin %s %s %r", self.id, self._get_remote_queue(), args);
         return self.task.apply_async(
             args=args, queue=self._get_remote_queue()
         ).get(timeout=self.remote_timeout)
@@ -1071,7 +1072,7 @@ class RenewOperation(InstanceOperation):
         return create_readable(ugettext_noop(
             "Renewed to suspend at %(suspend)s and destroy at %(delete)s."),
             suspend=self.instance.time_of_suspend,
-            delete=self.instance.time_of_suspend)
+            delete=self.instance.time_of_delete)
 
 
 @register_operation

circle/vm/tasks/local_tasks.py

@@ -17,16 +17,20 @@
 
 from celery.contrib.abortable import AbortableTask
 from manager.mancelery import celery
+from common.transport import from_wire
 
 
 @celery.task(base=AbortableTask, bind=True)
 def abortable_async_instance_operation(task, operation_id, instance_pk,
-                                       activity_pk, allargs, auxargs):
+                                       activity_pk, allargs_wire, auxargs_wire):
     from vm.models import Instance, InstanceActivity
     instance = Instance.objects.get(pk=instance_pk)
     operation = getattr(instance, operation_id)
     activity = InstanceActivity.objects.get(pk=activity_pk)
 
+    allargs = from_wire(allargs_wire) 
+    auxargs = from_wire(auxargs_wire)
+
     # save async task UUID to activity
     activity.task_uuid = task.request.id
     activity.save()
@@ -39,12 +43,15 @@ def abortable_async_instance_operation(task, operation_id, instance_pk,
 
 @celery.task(base=AbortableTask, bind=True)
 def abortable_async_node_operation(task, operation_id, node_pk, activity_pk,
-                                   allargs, auxargs):
+                                   allargs_wire, auxargs_wire):
     from vm.models import Node, NodeActivity
     node = Node.objects.get(pk=node_pk)
     operation = getattr(node, operation_id)
     activity = NodeActivity.objects.get(pk=activity_pk)
 
+    allargs = from_wire(allargs_wire) 
+    auxargs = from_wire(auxargs_wire)
+
     # save async task UUID to activity
     activity.task_uuid = task.request.id
     activity.save()

requirements/base.txt

@@ -47,5 +47,5 @@ python-memcached==1.58
 enum34==1.1.6
 ipaddress==1.0.18
 django-qrcode2
-install Image
+Image