Implement the questionnaire logic

.gitignore

@@ -5,3 +5,4 @@ db.cnf
 static
 deployment
 deploy
+runtest

django_backend/backend/auth/v1/client_views.py

@@ -7,6 +7,7 @@ from django.contrib.sessions.models import Session
 from ...models import User, RabbitMQInstance
 
 LOGGER = logging.getLogger(__name__)
+CLIENT_DEBUGGING = False
 
 ALLOW = HttpResponse('allow')
 DENY = HttpResponse('deny')
@@ -144,24 +145,26 @@ def resource_endpoint(request):
                 _webpage_client_userid(request)
                 and _resource_authorized_webpage_client(request)
         ):
-            LOGGER.debug(
-                'Granted %s access to resource %s %s to client',
-                permission,
-                resource,
-                name,
-            )
+            if CLIENT_DEBUGGING:
+                LOGGER.debug(
+                    'Granted %s access to resource %s %s to client',
+                    permission,
+                    resource,
+                    name,
+                )
             return ALLOW
 
         if (
                 _apiclient_valid(request)
                 and _resource_authorized_apiclient(request)
         ):
-            LOGGER.debug(
-                'Granted %s access to resource %s %s to client',
-                permission,
-                resource,
-                name,
-            )
+            if CLIENT_DEBUGGING:
+                LOGGER.debug(
+                    'Granted %s access to resource %s %s to client',
+                    permission,
+                    resource,
+                    name,
+                )
             return ALLOW
 
     LOGGER.error(
@@ -187,12 +190,13 @@ def topic_endpoint(request):
                 routing_key == webpage_client_userid
                 and not 'write' in permission
         ):
-            LOGGER.debug(
-                'Granted %s access to %s %s to client',
-                permission,
-                resource,
-                routing_key,
-            )
+            if CLIENT_DEBUGGING:
+                LOGGER.debug(
+                    'Granted %s access to %s %s to client',
+                    permission,
+                    resource,
+                    routing_key,
+                )
             return ALLOW
 
         LOGGER.error(

django_backend/backend/clientapi/views.py

@@ -3,7 +3,7 @@ import logging
 from rest_framework import generics, views
 from rest_framework.authentication import BasicAuthentication
 from rest_framework.response import Response
-from .serializers import SiteSerializer, ServiceSerializer, RabbitMQInstanceSerializer
+from .serializers import DeploymentTaskSerializer, ServiceSerializer, RabbitMQInstanceSerializer
 from ..models import RabbitMQInstance
 
 LOGGER = logging.getLogger(__name__)
@@ -13,12 +13,12 @@ LOGGER = logging.getLogger(__name__)
 AUTHENTICATION_CLASSES = (BasicAuthentication, )
 
 
-class DeploymentsView(generics.RetrieveAPIView):
+class DeploymentsView(generics.ListAPIView):
     authentication_classes = AUTHENTICATION_CLASSES
-    serializer_class = SiteSerializer
+    serializer_class = DeploymentTaskSerializer
 
-    def get_object(self):
-        return self.request.user.site
+    def get_queryset(self):
+        return self.request.user.site.tasks
 
 
 # the client has to fetch the configuration (like services etc.) here
@@ -45,8 +45,7 @@ class AckView(views.APIView):
         # find the corresponding task for this item
         for item in request.user.site.task_items.all():
             if item.task.id == int(task_id):
-                item.task.item_finished(request.user.site)
-                LOGGER.debug('Got acknowledgement for task %s', task_id)
+                item.success()
                 return Response({'ok': True})
 
         # this is no critical
@@ -71,15 +70,15 @@ class ResponseView(views.APIView):
 
         if task_item is not None:
             if status == 'success':
-                task_item.task.item_finished(request.user.site)
+                task_item.done()
                 return Response({'ok': True})
 
             elif status == 'fail':
-                task_item.task.item_failed(request.user.site)
+                task_item.failed()
                 return Response({'ok': True})
 
             elif status == 'reject':
-                task_item.task.item_rejected(request.user.site)
+                task_item.rejected(request.data['output']['questionnaire'])
                 return Response({'ok': True})
 
         LOGGER.info('%s executed the obsolete task#%s', request.user, task_id)

django_backend/backend/frontend/serializers.py

@@ -24,6 +24,7 @@ class DeploymentTaskItemSerializer(serializers.ModelSerializer):
     service = ServiceSerializer()
     key = backend_serializers.SSHPublicKeySerializerB()
     site = SiteSerializer()
+    questionnaire = serializers.JSONField()
 
     class Meta:
         model = models.DeploymentTaskItem
@@ -33,6 +34,8 @@ class DeploymentTaskItemSerializer(serializers.ModelSerializer):
             'service',
             'site',
             'state',
+            'questionnaire',
+            'id',
         ]
 
 
@@ -45,6 +48,7 @@ class DeploymentTaskSerializer(serializers.ModelSerializer):
             'action',
             'key',
             'service',
+            'id',
         ]
 
 

django_backend/backend/frontend/urls.py

@@ -6,4 +6,5 @@ URLPATTERNS = [
     url(r'^sshkey', views.SSHPublicKeyView.as_view()),
     url(r'^deployments', views.DeploymentView.as_view()),
     url(r'^delete_user', views.UserDeletionView.as_view()),
+    url(r'^questionnaire', views.QuestionnaireView.as_view()),
 ]

django_backend/backend/frontend/views.py

@@ -129,6 +129,21 @@ class DeploymentView(views.APIView):
         return _api_state_response(request)
 
 
+class QuestionnaireView(views.APIView):
+    def post(self, request):
+        task_item_id = request.query_params.get('id', '')
+        if task_item_id != '':
+            item = models.DeploymentTaskItem.objects.filter(id=int(task_item_id))
+            if item.exists():
+                item.first().questionnaire_answered(
+                    answers=request.data,
+                )
+            else:
+                LOGGER.error('Received questionnaire answer for non existing item')
+
+        return _api_state_response(request)
+
+
 class UserDeletionView(views.APIView):
     def delete(self, request):
         # this also logs out the user

django_backend/backend/models.py

@@ -160,7 +160,8 @@ class RabbitMQInstance(SingletonModel):
         )
 
     def publish_to_webpage(self, user, msg):
-        LOGGER.debug('Signalling webpage of user %s', user)
+        # noise
+        # LOGGER.debug('Signalling webpage of user %s', user)
         self._publish(
             'update',
             str(user.id),
@@ -239,7 +240,7 @@ class User(AbstractUser):
 
     @classmethod
     def construct_from_userinfo(cls, userinfo, idp):
-        LOGGER.debug('User: constructing from %s', userinfo)
+        LOGGER.debug('Constructing User from:\n%s', userinfo)
 
         if 'sub' not in userinfo:
             raise Exception('Missing attribute in userinfo: sub')
@@ -385,9 +386,12 @@ class Site(models.Model):
     # tasks which are still to be executed on this site
     @property
     def tasks(self):
+        task_items = self.task_items.filter(state='pending')\
+            | self.task_items.filter(state='failed')\
+            | self.task_items.filter(state='answered')
         return [item.task
                 for item
-                in self.task_items.all()]
+                in task_items]
 
 
 class Service(models.Model):
@@ -465,7 +469,7 @@ class SSHPublicKey(models.Model):
         return self.name
 
 
-# Deployment describes the credential state per user as it is supposed to be
+# Deployment describes the credential state per user (and site) as it is supposed to be
 #
 # (exception: if is_active=False the ssh_keys contain the keys to be deployed
 # if the deployment is reactivated)
@@ -504,7 +508,6 @@ class Deployment(models.Model):
     def get_deployment(cls, user, service):
         query = cls.objects.filter(
             user=user,
-        ).filter(
             service=service,
         )
         if query.exists():
@@ -607,6 +610,15 @@ class Deployment(models.Model):
         self._withdraw_key(key)
 
 
+def invert_action(action):
+    if action == 'deploy':
+        return 'withdraw'
+    elif action == 'withdraw':
+        return 'deploy'
+
+
+# DeploymentTask: knows:
+# user, service, key, action
 class DeploymentTask(models.Model):
     ACTION_CHOICES = (
         ('deploy', 'deploy'),
@@ -632,71 +644,122 @@ class DeploymentTask(models.Model):
         on_delete=models.CASCADE,
     )
 
+    # the inverse action of this task is requirred
+    # so we invert the task and manage its task_items accordingly
+    def invert_task(self):
+        LOGGER.debug(self.msg('inverting'))
+
+        previous_action = self.action
+        self.action = invert_action(previous_action)
+        self.save()
+
+        pending_sites = [task.site for task in self.task_items.all()]
+        self.chancel_items()
+
+        # sites which already executed the task
+        # we have to send them an order to rollback the changes
+        for site in self.deployment.service.site.all():
+            if site not in pending_sites:
+                deploy = DeploymentTaskItem(
+                    task=self,
+                    site=site,
+                    user=self.deployment.user
+                )
+                deploy.save()
+                LOGGER.debug(deploy.msg('pending'))
+
     @classmethod
     def construct_deployment_task(cls, deployment, key):
-        # delete outstanding tasks which are made obsolete by this task
-        for withdrawal in deployment.withdrawals.filter(key=key):
-            LOGGER.debug(withdrawal.msg('now obsolete'))
-            withdrawal.delete()
-
-        task = cls(
-            action='deploy',
-            deployment=deployment,
-            key=key,
-            user=deployment.user,
-        )
-        task.save()
-        LOGGER.debug(task.msg('generated'))
-
-        # generate task items
-        for site in deployment.service.site.all():
-            deploy = DeploymentTaskItem(
-                task=task,
-                site=site,
-                user=deployment.user
+        # does a task exist for this key?
+        query = deployment.tasks.filter(key=key)
+        if query.exists():
+            if len(query) > 1:
+                raise Exception('Unexpected query result')
+
+            task = query.first()
+            if task.action == 'deploy':
+                raise Exception('Constructing deployment task when one already exists')
+
+            task.invert_task()
+            return task
+
+        else:
+            #create new task
+            task = cls(
+                action='deploy',
+                deployment=deployment,
+                key=key,
+                user=deployment.user,
             )
-            deploy.save()
-            LOGGER.debug(deploy.msg('generated'))
+            task.save()
+            LOGGER.debug(task.msg('pending'))
+
+            # generate task items
+            for site in deployment.service.site.all():
+                deploy = DeploymentTaskItem(
+                    task=task,
+                    site=site,
+                    user=deployment.user
+                )
+                deploy.save()
+                LOGGER.debug(deploy.msg('pending'))
 
-        return task
+            return task
 
     @classmethod
     def construct_withdrawal_task(cls, deployment, key):
-        # delete outstanding tasks which are made obsolete by this task
-        for withdrawal in deployment.deploys.filter(key=key):
-            LOGGER.debug(withdrawal.msg('now obsolete'))
-            withdrawal.delete()
-
-        task = cls(
-            action='withdraw',
-            deployment=deployment,
-            key=key,
-            user=deployment.user,
-        )
-        task.save()
-        LOGGER.debug(task.msg('generated'))
-
-        # generate task items
-        for site in deployment.service.site.all():
-            deploy = DeploymentTaskItem(
-                task=task,
-                site=site,
-                user=deployment.user
-            )
-            deploy.save()
-            LOGGER.debug(deploy.msg('generated'))
+        # does a task exist for this key?
+        query = deployment.tasks.filter(key=key)
+        if query.exists():
+            if len(query) > 1:
+                raise Exception('Unexpected query result')
 
-        return task
+            task = query.first()
+            if task.action == 'withdraw':
+                raise Exception('Constructing deployment task when one already exists')
+
+            task.invert_task()
+            return task
+
+        else:
+            # create a new task
+            task = cls(
+                action='withdraw',
+                deployment=deployment,
+                key=key,
+                user=deployment.user,
+            )
+            task.save()
+            LOGGER.debug(task.msg('pending'))
+
+            # generate task items
+            for site in deployment.service.site.all():
+                deploy = DeploymentTaskItem(
+                    task=task,
+                    site=site,
+                    user=deployment.user
+                )
+                deploy.save()
+                LOGGER.debug(deploy.msg('pending'))
+
+            return task
+
+    def chancel_items(self):
+        for item in self.task_items.all():
+            item.chancel()
+
+    def chancel(self):
+        self.chancel_items()
+        LOGGER.debug(self.msg("chanceled"))
+        self.delete()
 
     @property
     def service(self):
         return self.deployment.service
 
     def __str__(self):
-        return "{}:{}:{} - {}#{}".format(
+        return "{}:{}#{}".format(
             self.deployment.service,
-            self.deployment.user,
-            self.key,
             self.action,
             self.id,
         )
@@ -725,42 +788,10 @@ class DeploymentTask(models.Model):
             content,
         )
 
-    # the client acked the receipt and execution of the task for his site
-    def item_finished(self, site):
-
-        item = self.task_items.get(site=site)
-        # LOGGER.debug(item.msg('done'))
-        item.delete()
-
+    def try_finished(self):
         if not self.task_items.exists():
             # finished sends its own message
             self._finished()
-        else:
-            self.send_state_update()
-
-    # the client failed to execute the item
-    # the client can try again later
-    # we signal the user about the failure
-    def item_failed(self, site):
-        item = self.task_items.get(site=site)
-        item.state = 'failed'
-        item.save()
-
-        self.send_state_update()
-
-        # TODO implement
-
-    # the client failed to execute the item
-    # the client needs additional information from the user to try again
-    # we have to ask the user for data
-    def item_rejected(self, site):
-        item = self.task_items.get(site=site)
-        item.state = 'rejected'
-        item.save()
-
-        self.send_state_update()
-
-        # TODO implement
 
     # maintenance after all task items are done
     def _finished(self):
@@ -789,6 +820,11 @@ class DeploymentTask(models.Model):
         )
 
 
+def questionnaire_default():
+    return {}
+
+# DeploymentTaskItem: knows:
+# user, service, key, action, _and_ site
 class DeploymentTaskItem(models.Model):
     task = models.ForeignKey(
         DeploymentTask,
@@ -811,6 +847,7 @@ class DeploymentTaskItem(models.Model):
         ('chanceled', 'Chanceled'),
         ('failed', 'Failed'),
         ('rejected', 'Rejected'),
+        ('answered', 'Answered'),
     )
     state = models.CharField(
         max_length=20,
@@ -818,6 +855,12 @@ class DeploymentTaskItem(models.Model):
         default='pending',
     )
 
+    questionnaire = JSONField(
+        default=questionnaire_default,
+        null=True,
+        blank=True,
+    )
+
     @property
     def service(self):
         return self.task.service
@@ -830,6 +873,53 @@ class DeploymentTaskItem(models.Model):
     def action(self):
         return self.deployment.key
 
+    # the client acked the receipt and execution of the task for his site
+    def success(self):
+        task = self.task
+
+        LOGGER.debug(self.msg('success'))
+        self.delete()
+
+        task.send_state_update()
+        task.try_finished()
+
+    # the user changed the deployment
+    # chancel (delete) this task item
+    def chancel(self):
+        LOGGER.debug(self.msg('chanceled'))
+        self.delete()
+
+        # no update on chancel
+        # the next task will send an update
+        #task.send_state_update()
+
+    # the client failed to execute the item
+    # the client can try again later
+    # we signal the user about the failure
+    def failed(self, site):
+        LOGGER.debug(self.msg('failed'))
+        self.state = 'failed'
+        self.save()
+
+        self.task.send_state_update()
+
+    # the client failed to execute the item
+    # the client needs additional information from the user to try again
+    # we have to ask the user for data
+    def rejected(self, questionnaire=None):
+        LOGGER.debug(self.msg('rejected'))
+        self.state = 'rejected'
+        self.questionnaire = questionnaire
+        self.save()
+
+        self.task.send_state_update()
+
+    def questionnaire_answered(self, answers=None):
+        LOGGER.debug('%s %s', self.msg('answers'), answers)
+        self.state = 'answered'
+        self.questionnaire = answers
+        self.save()
+
     def __str__(self):
         return "{}@{}#{}".format(
             self.task,
@@ -838,7 +928,8 @@ class DeploymentTaskItem(models.Model):
         )
 
     def msg(self, msg):
-        return '[DeploymentTaskItem:{}] {}'.format(self, msg)
+        return '[Depl. TaskItem:{}] {}'.format(self, msg)
+
 
 
 #

django_backend/backend/test_models.py

@@ -15,6 +15,8 @@ TEST_USERINFO = {
     'name': TEST_NAME,
     'sub': TEST_SUB,
 }
+TEST_SERVICE = 'test_service'
+TEST_SITE = 'test_site'
 
 
 def setup_fixture():
@@ -41,14 +43,14 @@ def setup_fixture():
     user.save()
 
     site = models.Site(
-        name=TEST_NAME,
-        description=TEST_NAME,
+        name=TEST_SITE,
+        description=TEST_SITE,
     )
     site.save()
 
     service = models.Service(
-        name=TEST_NAME,
-        description=TEST_NAME,
+        name=TEST_SERVICE,
+        description=TEST_SERVICE,
     )
     service.save()
     service.site.add(site)
@@ -107,11 +109,12 @@ class DeploymentTest(TestCase):
     def test_deployment(self):
         user = models.User.objects.get(username=TEST_NAME)
         key = models.SSHPublicKey.objects.get(name=TEST_NAME)
-        service = models.Service.objects.get(name=TEST_NAME)
-        site = models.Site.objects.get(name=TEST_NAME)
+        service = models.Service.objects.get(name=TEST_SERVICE)
 
         deployment = models.Deployment.get_deployment(user, service)
         self.assertIsNotNone(deployment)
+
+        # no tasks exist yet
         self.assertFalse(deployment.deploys.exists())
         self.assertFalse(deployment.withdrawals.exists())
 
@@ -119,16 +122,23 @@ class DeploymentTest(TestCase):
             deployment=deployment,
             key=key,
         )
+
+        # one deploy should exist
         self.assertTrue(deployment.deploys.exists())
         self.assertFalse(deployment.withdrawals.exists())
 
-        withdrawal_task = models.DeploymentTask.construct_withdrawal_task(
+        models.DeploymentTask.construct_withdrawal_task(
             deployment=deployment,
             key=key,
         )