Fixes on billing order with metric

TODO.md

@@ -14,7 +14,6 @@ TODO
 
 * add `BackendLog` retry action
 * move invoice contact to invoices app?
-* wrapper around reverse('admin:....') `link()` and `link_factory()`
 * PHPbBckendMiixin with get_php_ini
 * Apache: `IncludeOptional /etc/apache2/extra-vhos[t]/account-site-custom.con[f]`
 * rename account.user to primary_user
@@ -40,11 +39,8 @@ TODO
 Remember that, as always with QuerySets, any subsequent chained methods which imply a different database query will ignore previously cached results, and retrieve data using a fresh database query. 
 * profile select_related vs prefetch_related
 
-* use HTTP OPTIONS instead of configuration endpoint, or rename to settings?
 
 * Log changes from rest api (serialized objects)
-
-
 * passlib; nano /usr/local/lib/python2.7/dist-packages/passlib/ext/django/utils.py SortedDict -> collections.OrderedDict
 * pip install pyinotify
 
@@ -105,3 +101,8 @@ at + clock time, midnight, noon- At 3:30 p.m., At 4:01, At noon
 
 
 * create log file at /var/log/orchestra.log and rotate
+
+* order.register_at
+    @property
+    def register_on(self):
+        return order.register_at.date()

orchestra/apps/bills/models.py

@@ -62,6 +62,9 @@ class Bill(models.Model):
     
     objects = BillManager()
     
+    class Meta:
+        get_latest_by = 'created_on'
+    
     def __unicode__(self):
         return self.number
     

orchestra/apps/orders/billing.py

@@ -10,23 +10,27 @@ class BillsBackend(object):
         bill = None
         bills = []
         create_new = options.get('new_open', False)
-        is_proforma = options.get('is_proforma', False)
+        proforma = options.get('proforma', False)
         for line in lines:
             service = line.order.service
             # Create bill if needed
             if bill is None or service.is_fee:
-                if is_proforma:
+                if proforma:
                     if create_new:
                         bill = ProForma.objects.create(account=account)
                     else:
-                        bill, __ = ProForma.objects.get_or_create(account=account, is_open=True)
+                        bill = ProForma.objects.filter(account=account, is_open=True).last()
+                        if not bill:
+                            bill = ProForma.objects.create(account=account, is_open=True)
                 elif service.is_fee:
                     bill = Fee.objects.create(account=account)
                 else:
                     if create_new:
                         bill = Invoice.objects.create(account=account)
                     else:
-                        bill, __ = Invoice.objects.get_or_create(account=account, is_open=True)
+                        bill = Invoice.objects.filter(account=account, is_open=True).last()
+                        if not bill:
+                            bill = Invoice.objects.create(account=account, is_open=True)
                 bills.append(bill)
             # Create bill line
             billine = bill.lines.create(

orchestra/apps/orders/models.py

@@ -1,3 +1,4 @@
+import decimal
 import logging
 import sys
 
@@ -122,13 +123,15 @@ class Order(models.Model):
     def update(self):
         instance = self.content_object
         handler = self.service.handler
+        metric = ''
         if handler.metric:
             metric = handler.get_metric(instance)
             if metric is not None:
                 MetricStorage.store(self, metric)
+            metric = ', metric:{}'.format(metric)
         description = "{}: {}".format(handler.description, str(instance))
-        logger.info("UPDATED order id: {id} description:{description}".format(
+        logger.info("UPDATED order id:{id}, description:{description}{metric}".format(
-                    id=self.id, description=description))
+                    id=self.id, description=description, metric=metric))
         if self.description != description:
             self.description = description
             self.save()
@@ -143,10 +146,10 @@ class Order(models.Model):
 
 
 class MetricStorage(models.Model):
-    order = models.ForeignKey(Order, verbose_name=_("order"))
+    order = models.ForeignKey(Order, verbose_name=_("order"), related_name='metrics')
-    value = models.BigIntegerField(_("value"))
+    value = models.DecimalField(_("value"), max_digits=16, decimal_places=2)
-    created_on = models.DateField(_("created on"), auto_now_add=True)
+    created_on = models.DateField(_("created"), auto_now_add=True)
-    updated_on = models.DateField(_("updated on"), auto_now=True)
+    updated_on = models.DateTimeField(_("updated"))
     
     class Meta:
         get_latest_by = 'created_on'
@@ -156,23 +159,24 @@ class MetricStorage(models.Model):
     
     @classmethod
     def store(cls, order, value):
+        now = timezone.now()
         try:
             metric = cls.objects.filter(order=order).latest()
         except cls.DoesNotExist:
-            cls.objects.create(order=order, value=value)
+            cls.objects.create(order=order, value=value, updated_on=now)
         else:
             if metric.value != value:
-                cls.objects.create(order=order, value=value)
+                cls.objects.create(order=order, value=value, updated_on=now)
             else:
+                metric.updated_on = now
                 metric.save()
     
     @classmethod
     def get(cls, order, ini, end):
         try:
-            return cls.objects.filter(order=order, updated_on__lt=end,
+            return order.metrics.filter(updated_on__lt=end, updated_on__gte=ini).latest('updated_on').value
-                    updated_on__gte=ini).latest('updated_on').value
         except cls.DoesNotExist:
-            return 0
+            return decimal.Decimal(0)
 
 
 _excluded_models = (MetricStorage, LogEntry, Order, ContentType, MigrationRecorder.Migration)

orchestra/apps/orders/tests/functional_tests/tests.py

@@ -4,31 +4,28 @@ import sys
 
 from dateutil import relativedelta
 from django.contrib.contenttypes.models import ContentType
+from django.db.models import F
 from django.utils import timezone
 
 from orchestra.apps.accounts.models import Account
-from orchestra.apps.services.models import Service
+from orchestra.apps.services.models import Service, Plan
 from orchestra.apps.services import settings as services_settings
 from orchestra.apps.users.models import User
 from orchestra.utils.tests import BaseTestCase, random_ascii
 
 
-class BillingTests(BaseTestCase):
+class BaseBillingTest(BaseTestCase):
-    DEPENDENCIES = (
-        'orchestra.apps.services',
-        'orchestra.apps.users',
-        'orchestra.apps.users.roles.posix',
-    )
-    
     def create_account(self):
         account = Account.objects.create()
         user = User.objects.create_user(username='rata_palida', account=account)
         account.user = user
         account.save()
         return account
-    
+
+
+class FTPBillingTest(BaseBillingTest):
     def create_ftp_service(self):
-        service = Service.objects.create(
+        return Service.objects.create(
             description="FTP Account",
             content_type=ContentType.objects.get_for_model(User),
             match='not user.is_main and user.has_posix()',
@@ -36,19 +33,18 @@ class BillingTests(BaseTestCase):
             billing_point=Service.FIXED_DATE,
             is_fee=False,
             metric='',
-            pricing_period=Service.BILLING_PERIOD,
+            pricing_period=Service.NEVER,
             rate_algorithm=Service.STEP_PRICE,
             on_cancel=Service.DISCOUNT,
             payment_style=Service.PREPAY,
             tax=0,
             nominal_price=10,
         )
-        return service
     
     def create_ftp(self, account=None):
-        username = '%s_ftp' % random_ascii(10)
         if not account:
             account = self.create_account()
+        username = '%s_ftp' % random_ascii(10)
         user = User.objects.create_user(username=username, account=account)
         POSIX = user._meta.get_field_by_name('posix')[0].model
         POSIX.objects.create(user=user)
@@ -98,8 +94,12 @@ class BillingTests(BaseTestCase):
         user = self.create_ftp(account=account)
         first_bp = timezone.now().date() + relativedelta.relativedelta(years=2)
         bills = service.orders.bill(billing_point=first_bp, fixed_point=True)
+        self.assertEqual(1, service.orders.active().count())
         user.delete()
+        self.assertEqual(0, service.orders.active().count())
         user = self.create_ftp(account=account)
+        self.assertEqual(1, service.orders.active().count())
+        self.assertEqual(2, service.orders.count())
         bp = timezone.now().date() + relativedelta.relativedelta(years=1)
         bills = service.orders.bill(billing_point=bp, fixed_point=True, new_open=True)
         discount = bills[0].lines.order_by('id')[0].sublines.get()
@@ -109,3 +109,204 @@ class BillingTests(BaseTestCase):
         order = service.orders.order_by('-id').first()
         self.assertEqual(first_bp, order.billed_until)
         self.assertEqual(decimal.Decimal(0), bills[0].get_total())
+
+class DomainBillingTest(BaseBillingTest):
+    def create_domain_service(self):
+        from orchestra.apps.miscellaneous.models import MiscService, Miscellaneous
+        service = Service.objects.create(
+            description="Domain .ES",
+            content_type=ContentType.objects.get_for_model(Miscellaneous),
+            match="miscellaneous.is_active and miscellaneous.service.name.lower() == 'domain .es'",
+            billing_period=Service.ANUAL,
+            billing_point=Service.ON_REGISTER,
+            is_fee=False,
+            metric='',
+            pricing_period=Service.BILLING_PERIOD,
+            rate_algorithm=Service.STEP_PRICE,
+            on_cancel=Service.NOTHING,
+            payment_style=Service.PREPAY,
+            tax=0,
+            nominal_price=10
+        )
+        plan = Plan.objects.create(is_default=True, name='Default')
+        service.rates.create(plan=plan, quantity=1, price=0)
+        service.rates.create(plan=plan, quantity=2, price=10)
+        service.rates.create(plan=plan, quantity=4, price=9)
+        service.rates.create(plan=plan, quantity=6, price=6)
+        return service
+    
+    def create_domain(self, account=None):
+        from orchestra.apps.miscellaneous.models import MiscService, Miscellaneous
+        if not account:
+            account = self.create_account()
+        domain_name = '%s.es' % random_ascii(10)
+        domain_service, __ = MiscService.objects.get_or_create(name='domain .es', description='Domain .ES')
+        return Miscellaneous.objects.create(service=domain_service, description=domain_name, account=account)
+    
+    def test_domain(self):
+        service = self.create_domain_service()
+        account = self.create_account()
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(0, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(10, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(20, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(29, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(38, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(44, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(50, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill()
+        self.assertEqual(56, bills[0].get_total())
+    
+    def test_domain_proforma(self):
+        service = self.create_domain_service()
+        account = self.create_account()
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(0, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(10, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(20, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(29, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(38, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(44, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(50, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True, new_open=True)
+        self.assertEqual(56, bills[0].get_total())
+    
+    def test_domain_cumulative(self):
+        service = self.create_domain_service()
+        account = self.create_account()
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True)
+        self.assertEqual(0, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True)
+        self.assertEqual(10, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(proforma=True)
+        self.assertEqual(30, bills[0].get_total())
+    
+    def test_domain_new_open(self):
+        service = self.create_domain_service()
+        account = self.create_account()
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(0, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(10, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(10, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(9, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(9, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(6, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(6, bills[0].get_total())
+        self.create_domain(account=account)
+        bills = service.orders.bill(new_open=True)
+        self.assertEqual(6, bills[0].get_total())
+
+
+class TrafficBillingTest(BaseBillingTest):
+    def create_traffic_service(self):
+        service = Service.objects.create(
+            description="Traffic",
+            content_type=ContentType.objects.get_for_model(Account),
+            match="account.is_active",
+            billing_period=Service.MONTHLY,
+            billing_point=Service.FIXED_DATE,
+            is_fee=False,
+            metric='account.resources.traffic.used',
+            pricing_period=Service.BILLING_PERIOD,
+            rate_algorithm=Service.STEP_PRICE,
+            on_cancel=Service.NOTHING,
+            payment_style=Service.POSTPAY,
+            tax=0,
+            nominal_price=10
+        )
+        plan = Plan.objects.create(is_default=True, name='Default')
+        service.rates.create(plan=plan, quantity=1, price=0)
+        service.rates.create(plan=plan, quantity=11, price=10)
+        return service
+    
+    def create_traffic_resource(self):
+        from orchestra.apps.resources.models import Resource
+        self.resource = Resource.objects.create(
+            name='traffic',
+            content_type=ContentType.objects.get_for_model(Account),
+            period=Resource.MONTHLY_SUM,
+            verbose_name='Account Traffic',
+            unit='GB',
+            scale=10**9,
+            ondemand=True,
+            monitors='FTPTraffic',
+        )
+        return self.resource
+    
+    def report_traffic(self, account, date, value):
+        from orchestra.apps.resources.models import ResourceData, MonitorData
+        ct = ContentType.objects.get_for_model(Account)
+        object_id = account.pk
+        MonitorData.objects.create(monitor='FTPTraffic', content_object=account.user, value=value, date=date)
+        data = ResourceData.get_or_create(account, self.resource)
+        data.update()
+    
+    def test_traffic(self):
+        service = self.create_traffic_service()
+        resource = self.create_traffic_resource()
+        account = self.create_account()
+        
+        self.report_traffic(account, timezone.now(), 10**9)
+        bills = service.orders.bill(commit=False)
+        self.assertEqual([(account, [])], bills)
+        
+        # Prepay
+        delta = datetime.timedelta(days=60)
+        date = (timezone.now()-delta).date()
+        order = service.orders.get()
+        order.registered_on = date
+        order.save()
+        
+        self.report_traffic(account, date, 10**9*9)
+        order.metrics.update(updated_on=F('updated_on')-delta)
+        bills = service.orders.bill(proforma=True)
+        self.assertEqual(0, bills[0].get_total())
+        
+        self.report_traffic(account, date, 10**10*9)
+        order.metrics.filter(id=3).update(updated_on=F('updated_on')-delta)
+        bills = service.orders.bill(proforma=True)
+        self.assertEqual(900, bills[0].get_total())

orchestra/apps/payments/admin.py

@@ -172,6 +172,9 @@ class TransactionProcessAdmin(ChangeViewActionsMixin, admin.ModelAdmin):
     display_transactions.short_description = _("Transactions")
     display_transactions.allow_tags = True
     
+    def has_add_permission(self, *args, **kwargs):
+        return False
+    
     def get_change_view_actions(self, obj=None):
         actions = super(TransactionProcessAdmin, self).get_change_view_actions()
         exclude = []

orchestra/apps/resources/backends.py

@@ -52,7 +52,7 @@ class ServiceMonitor(ServiceBackend):
         return line.split()
     
     def store(self, log):
-        """ stores montirod values from stdout """
+        """ stores monitored values from stdout """
         from .models import MonitorData
         name = self.get_name()
         app_label, model_name = self.model.split('.')

orchestra/apps/resources/helpers.py

@@ -11,7 +11,7 @@ from .backends import ServiceMonitor
 
 def compute_resource_usage(data):
     """ Computes MonitorData.used based on related monitors """
-    MonitorData = type(data)
+    from .models import MonitorData
     resource = data.resource
     today = timezone.now()
     result = 0
@@ -29,9 +29,7 @@ def compute_resource_usage(data):
             objects = monitor_model.objects.filter(**{fields: data.object_id})
             pks = objects.values_list('id', flat=True)
             ct = ContentType.objects.get_for_model(monitor_model)
-            dataset = MonitorData.objects.filter(monitor=monitor,
+            dataset = MonitorData.objects.filter(monitor=monitor, content_type=ct, object_id__in=pks)
-                    content_type=ct, object_id__in=pks)
-        
         # Process dataset according to resource.period
         if resource.period == resource.MONTHLY_AVG:
             try:
@@ -39,11 +37,9 @@ def compute_resource_usage(data):
             except MonitorData.DoesNotExist:
                 continue
             has_result = True
-            epoch = datetime(year=today.year, month=today.month, day=1,
+            epoch = datetime(year=today.year, month=today.month, day=1, tzinfo=timezone.utc)
-                             tzinfo=timezone.utc)
             total = (epoch-last.date).total_seconds()
-            dataset = dataset.filter(date__year=today.year,
+            dataset = dataset.filter(date__year=today.year, date__month=today.month)
-                                     date__month=today.month)
             for data in dataset:
                 slot = (previous-data.date).total_seconds()
                 result += data.value * slot/total
@@ -62,7 +58,5 @@ def compute_resource_usage(data):
                 continue
             has_result = True
         else:
-            msg = "%s support not implemented" % data.period
+            raise NotImplementedError("%s support not implemented" % data.period)
-            raise NotImplementedError(msg)
-        
     return result/resource.scale if has_result else None

orchestra/apps/resources/models.py

@@ -2,11 +2,11 @@ from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelatio
 from django.contrib.contenttypes.models import ContentType
 from django.core import validators
 from django.db import models
+from django.utils import timezone
 from django.utils.translation import ugettext_lazy as _
 from djcelery.models import PeriodicTask, CrontabSchedule
 
 from orchestra.models import queryset, fields
-from orchestra.utils.functional import cached
 
 from . import helpers
 from .backends import ServiceMonitor
@@ -43,6 +43,7 @@ class Resource(models.Model):
             default=LAST,
             help_text=_("Operation used for aggregating this resource monitored"
                         "data."))
+    # TODO rename to on_deman
     ondemand = models.BooleanField(_("on demand"), default=False,
             help_text=_("If enabled the resource will not be pre-allocated, "
                         "but allocated under the application demand"))
@@ -79,6 +80,7 @@ class Resource(models.Model):
         return "{}-{}".format(str(self.content_type), self.name)
     
     def save(self, *args, **kwargs):
+#        created = not self.pk
         super(Resource, self).save(*args, **kwargs)
         # Create Celery periodic task
         name = 'monitor.%s' % str(self)
@@ -98,6 +100,8 @@ class Resource(models.Model):
             elif task.crontab != self.crontab:
                 task.crontab = self.crontab
                 task.save()
+#        if created:
+#            create_resource_relation()
     
     def delete(self, *args, **kwargs):
         super(Resource, self).delete(*args, **kwargs)
@@ -136,6 +140,13 @@ class ResourceData(models.Model):
     
     def get_used(self):
         return helpers.compute_resource_usage(self)
+    
+    def update(self, current=None):
+        if current is None:
+            current = self.get_used()
+        self.used = current or 0
+        self.last_update = timezone.now()
+        self.save()
 
 
 class MonitorData(models.Model):
@@ -169,7 +180,6 @@ def create_resource_relation():
                 resource = Resource.objects.get(content_type__model=model,
                         name=attr, is_active=True)
                 data = ResourceData(content_object=self.obj, resource=resource)
-            setattr(self, attr, data)
             return data
         
         def __get__(self, obj, cls):

orchestra/apps/resources/tasks.py

@@ -27,15 +27,22 @@ def monitor(resource_id):
     model = resource.content_type.model_class()
     for obj in model.objects.all():
         data = ResourceData.get_or_create(obj, resource)
-        current = data.get_used()
+        data.update()
         if not resource.disable_trigger:
-            if data.used < data.allocated and current > data.allocated:
+            if data.used < data.allocated:
                 op = Operation.create(backend, obj, Operation.EXCEED)
                 operations.append(op)
-            elif data.used > data.allocated and current < data.allocated:
+            elif data.used < data.allocated:
                 op = Operation.create(backend, obj, Operation.RECOVERY)
                 operation.append(op)
-        data.used = current or 0
+#        data = ResourceData.get_or_create(obj, resource)
-        data.last_update = timezone.now()
+#        current = data.get_used()
-        data.save()
+#        if not resource.disable_trigger:
+#            if data.used < data.allocated and current > data.allocated:
+#                op = Operation.create(backend, obj, Operation.EXCEED)
+#                operations.append(op)
+#            elif data.used > data.allocated and current < data.allocated:
+#                op = Operation.create(backend, obj, Operation.RECOVERY)
+#                operation.append(op)
+#        data.update(current=current)
     Operation.execute(operations)

orchestra/apps/services/handlers.py

@@ -65,6 +65,8 @@ class ServiceHandler(plugins.Plugin):
                     date = bp
                     if self.payment_style == self.PREPAY:
                         date += relativedelta.relativedelta(months=1)
+                    else:
+                        date = timezone.now().date()
                     if self.billing_point == self.ON_REGISTER:
                         day = order.registered_on.day
                     elif self.billing_point == self.FIXED_DATE:
@@ -84,7 +86,7 @@ class ServiceHandler(plugins.Plugin):
                         raise NotImplementedError(msg)
                     year = bp.year
                     if self.payment_style == self.POSTPAY:
-                        year = bo.year - relativedelta.relativedelta(years=1)
+                        year = bp.year - relativedelta.relativedelta(years=1)
                     if bp.month >= month:
                         year = bp.year + 1
                     bp = datetime.datetime(year=year, month=month, day=day,
@@ -116,10 +118,19 @@ class ServiceHandler(plugins.Plugin):
         return decimal.Decimal(size)
     
     def get_pricing_slots(self, ini, end):
+        day = 1
+        month = settings.SERVICES_SERVICE_ANUAL_BILLING_MONTH
+        if self.billing_point == self.ON_REGISTER:
+            day = ini.day
+            month = ini.month
         period = self.get_pricing_period()
         if period == self.MONTHLY:
+            ini = datetime.datetime(year=ini.year, month=ini.month, day=day,
+                                    tzinfo=timezone.get_current_timezone()).date()
             rdelta = relativedelta.relativedelta(months=1)
         elif period == self.ANUAL:
+            ini = datetime.datetime(year=ini.year, month=month, day=day,
+                                    tzinfo=timezone.get_current_timezone()).date()
             rdelta = relativedelta.relativedelta(years=1)
         elif period == self.NEVER:
             yield ini, end
@@ -128,10 +139,9 @@ class ServiceHandler(plugins.Plugin):
             raise NotImplementedError
         while True:
             next = ini + rdelta
-            if next >= end:
-                yield ini, end
-                break
             yield ini, next
+            if next >= end:
+                break
             ini = next
     
     def generate_discount(self, line, dtype, price):
@@ -213,12 +223,12 @@ class ServiceHandler(plugins.Plugin):
         for order in porders:
             bu = getattr(order, 'new_billed_until', order.billed_until)
             if bu:
-                if order.register >= ini and order.register < end:
+                if order.registered_on > ini and order.registered_on <= end:
                     counter += 1
-                if order.register != bu and bu >= ini and bu < end:
+                if order.registered_on != bu and bu > ini and bu <= end:
                     counter += 1
                 if order.billed_until and order.billed_until != bu:
-                    if order.register != order.billed_until and order.billed_until >= ini and order.billed_until < end:
+                    if order.registered_on != order.billed_until and order.billed_until > ini and order.billed_until <= end:
                         counter += 1
         return counter
     
@@ -230,7 +240,7 @@ class ServiceHandler(plugins.Plugin):
             size = self.get_price_size(ini, end)
             metric = len(orders)
             interval = helpers.Interval(ini=ini, end=end)
-            for position, order in enumerate(orders):
+            for position, order in enumerate(orders, start=1):
                 csize = 0
                 compensations = getattr(order, '_compensations', [])
                 # Compensations < new_billed_until
@@ -269,14 +279,14 @@ class ServiceHandler(plugins.Plugin):
     def bill_registered_or_renew_events(self, account, porders, rates, commit=True):
         # Before registration
         lines = []
-        perido = self.get_pricing_period()
+        period = self.get_pricing_period()
         if period == self.MONTHLY:
             rdelta = relativedelta.relativedelta(months=1)
         elif period == self.ANUAL:
             rdelta = relativedelta.relativedelta(years=1)
         elif period == self.NEVER:
             raise NotImplementedError("Rates with no pricing period?")
-        for position, order in enumerate(porders):
+        for position, order in enumerate(porders, start=1):
             if hasattr(order, 'new_billed_until'):
                 pend = order.billed_until or order.registered_on
                 pini = pend - rdelta
@@ -298,6 +308,7 @@ class ServiceHandler(plugins.Plugin):
                 if commit:
                     order.billed_until = order.new_billed_until
                     order.save()
+        return lines
     
     def bill_with_orders(self, orders, account, **options):
         # For the "boundary conditions" just think that:
@@ -340,7 +351,7 @@ class ServiceHandler(plugins.Plugin):
             porders = related_orders.pricing_orders(ini, end)
             porders = list(set(orders).union(set(porders)))
             porders.sort(cmp=helpers.cmp_billed_until_or_registered_on)
-            if self.billing_period != self.NEVER and self.get_pricing_period != self.NEVER:
+            if self.billing_period != self.NEVER and self.get_pricing_period == self.NEVER:
                 liens = self.bill_concurrent_orders(account, porders, rates, ini, end, commit=commit)
             else:
                 # TODO compensation in this case?
@@ -371,6 +382,7 @@ class ServiceHandler(plugins.Plugin):
         # TODO filter out orders with cancelled_on < billed_until ?
         lines = []
         commit = options.get('commit', True)
+        bp = None
         for order in orders:
             bp = self.get_billing_point(order, bp=bp, **options)
             ini = order.billed_until or order.registered_on
@@ -381,25 +393,17 @@ class ServiceHandler(plugins.Plugin):
             prev = None
             lines_info = []
             for ini, end in self.get_pricing_slots(ini, bp):
-                size = self.get_price_size(ini, end)
                 metric = order.get_metric(ini, end)
                 price = self.get_price(order, metric)
-                current = AttributeDict(price=price, size=size, ini=ini, end=end)
+                lines.append(self.generate_line(order, price, metric, ini, end))
-                if prev and prev.metric == current.metric and prev.end == current.end:
-                    prev.end = current.end
-                    prev.size += current.size
-                    prev.price += current.price
-                else:
-                    lines_info.append(current)
-                prev = current
-            for line in lines_info:
-                lines.append(self.generate_line(order, price, size, ini, end))
             if commit:
                 order.billed_until = order.new_billed_until
                 order.save()
         return lines
     
     def generate_bill_lines(self, orders, account, **options):
+        if options.get('proforma', False):
+            options['commit'] = False
         if not self.metric:
             lines = self.bill_with_orders(orders, account, **options)
         else:

orchestra/apps/services/models.py

@@ -1,3 +1,4 @@
+import decimal
 import sys
 
 from django.db import models
@@ -281,14 +282,14 @@ class Service(models.Model):
                 if counter >= metric:
                     counter = metric
                     accumulated += (counter - ant_counter) * rate['price']
-                    return float(accumulated)
+                    return decimal.Decimal(accumulated)
                 ant_counter = counter
                 accumulated += rate['price'] * rate['quantity']
         else:
             for rate in rates:
                 counter += rate['quantity']
                 if counter >= position:
-                    return float(rate['price'])
+                    return decimal.Decimal(rate['price'])
     
     def get_rates(self, account, cache=True):
         # rates are cached per account

orchestra/apps/services/tests/test_handler.py

@@ -50,7 +50,7 @@ class HandlerTests(BaseTestCase):
             billing_point=Service.FIXED_DATE,
             is_fee=False,
             metric='',
-            pricing_period=Service.BILLING_PERIOD,
+            pricing_period=Service.NEVER,
             rate_algorithm=Service.STEP_PRICE,
             on_cancel=Service.DISCOUNT,
             payment_style=Service.PREPAY,

orchestra/apps/users/models.py

@@ -38,8 +38,7 @@ class User(auth.AbstractBaseUser):
     
     @property
     def is_main(self):
-        # TODO chicken and egg
+        return self.account.user == self
-        return not self.account.user_id or self.account.user == self
     
     def get_full_name(self):
         full_name = '%s %s' % (self.first_name, self.last_name)