Added upgrade offering notification and added upgrade offering to chg

dbaas/api/task.py

@@ -160,6 +160,7 @@ class TaskAPI(viewsets.ReadOnlyModelViewSet):
         'maintenance.tasks.restart_database',
         'notification.tasks.change_database_persistence',
         'maintenance.tasks.task_upgrade_disk_type',
+        'maintenance.tasks.auto_upgrade_database_vm_offering',
     ]
 
     model = TaskHistory

dbaas/maintenance/task_auto_upgrade_vm_offering.py

@@ -6,7 +6,7 @@
 from physical.models import (Plan, DatabaseInfra, Instance, Pool)
 from util.providers import get_auto_upgrade_vm_settings
 from workflow.workflow import steps_for_instances
-from util import get_vm_name
+from util import get_vm_name, email_notifications
 
 LOG = logging.getLogger(__name__)
 
@@ -75,6 +75,7 @@ def task_auto_upgrade_vm_offering(database, task, retry_from=None, resize_target
         last_vm_created = number_of_instances_before_task
 
         if not retry_from:
+            email_notifications.upgrade_offering_notification(database, resize_target)
             for i in range(number_of_instances):
                 instance = None
                 last_vm_created += 1

dbaas/notification/templates/email_extras/auto_upgrade_offering_notification.html

@@ -0,0 +1,20 @@
+<h2>Automatic GCP offering upgrade for Database {{ database.name }}</h2>
+
+We would like to inform you that an automatic offer update is being carried out on DBaaS to meet your database <a href="{{database_url}}">{{database.name}}</a> needs.
+<br><br>
+The update will be done automatically from {{ current_offering.name }} to {{ future_offering.name }}.
+<br><br>
+Please be aware that this upgrade may increase the costs.
+Any questions please contact the DBDevops responsible for your team.
+<br><br>
+
+{% if database.team.email %}
+You are receiving this email because in our records you are in team {{ database.team.name }}.<br>
+If this is not right, contact the DBaaS system administrators.
+{% else %}
+<h3>Team {{ database.team.name }} has no email set!</h3>
+{% endif %}
+<br><br><br>
+Regards,<br>
+DBaaS notification robot<br>
+{{domain}}<br>

dbaas/notification/templates/email_extras/auto_upgrade_offering_notification.txt

@@ -0,0 +1,19 @@
+Automatic GCP offering upgrade for Database {{ database.name }}
+
+We would like to inform you that an automatic offer update is being carried out on DBaaS to meet your database {{database.name}} needs.
+
+The update will be done automatically from {{ current_offering.name }} to {{ future_offering.name }}.
+
+Please be aware that this upgrade may increase the costs.
+Any questions please contact the DBDevops responsible for your team.
+
+{% if database.team.email %}
+You are receiving this email because in our records you are in team {{ database.team.name }}.<br>
+If this is not right, contact the DBaaS system administrators.
+{% else %}
+Team {{ database.team.name }} has no email set!
+{% endif %}
+
+Regards,
+DBaaS notification robot
+{{domain}}

dbaas/util/email_notifications.py

@@ -157,8 +157,30 @@ def disk_resize_notification(database, new_disk, usage_percentage):
     )
 
 
-def schedule_task_notification(database, scheduled_task, is_new,
-                               is_task_warning=False):
+def upgrade_offering_notification(database, resize_target):
+    LOG.info('Notifying auto upgrade offering to database: {}'.format(database))
+
+    current_offering = database.databaseinfra.offering
+    future_offering = database.get_future_offering(resize_target)
+
+    subject = _('[DBaaS] Database {} auto upgrade offering to {}').format(database, future_offering.name)
+    template = "auto_upgrade_offering_notification"
+
+    context = {
+        'domain': get_domain(),
+        'database': database,
+        'current_offering': current_offering,
+        'future_offering': future_offering,
+        'database_url': get_database_url(database.id)
+    }
+
+    send_mail_template(
+        subject, template, email_from(), email_to(database.team),
+        fail_silently=False, attachments=None, context=context
+    )
+
+
+def schedule_task_notification(database, scheduled_task, is_new, is_task_warning=False):
 
     subject_tmpl = '[DBaaS] Automatic Task {} for Database {}'
     if is_task_warning: