Add signal which send data with old and new value of address and host… (

#2776)

Add signal which send data with old and new value of address and hostname

src/ralph/dns/dnsaas.py

@@ -200,7 +200,7 @@ def _post(self, url, data):
 
     def delete_dns_record(self, record_id):
         """
-        Delete record in DNSAAS
+        Delete record in DNSAAS.
 
         Args:
             record_ids: ID's to delete
@@ -216,3 +216,35 @@ def delete_dns_record(self, record_id):
             }
         elif response.status_code != 204:
             return response.json()
+
+    def send_ipaddress_data(self, ip_record_data):
+        """
+        Send data about IP address and hostname.
+
+        Args:
+            ip_record_data: dict contains keys: new, old, action
+                Structure of parameter:
+                ``
+                {
+                    'old': {
+                        'address': 127.0.0.1,
+                        'hostname': 'localhost.local'
+                    }
+                    'new': {
+                        'address': 127.0.0.1,
+                        'hostname': 'localhost'
+                    },
+                    'action': 'update'
+                }
+                ``
+                ``old`` and ``new`` contains previous and next state of
+                IP address record (in Ralph).
+        Returns:
+            JSON response from API
+        """
+        logger.info('Send update data: {}'.format(ip_record_data))
+        url = self.build_url('ip_record')
+        response = self._post(url, ip_record_data)
+        if response.status_code >= 400:
+            logger.error('DNSaaS returned {}'.format(response.status_code))
+        return response.json()

src/ralph/networks/__init__.py

@@ -0,0 +1 @@
+default_app_config = 'ralph.networks.apps.Networks'

src/ralph/networks/apps.py

@@ -0,0 +1,25 @@
+from django.conf import settings
+from django.db.models.signals import post_delete, post_save
+
+from ralph.apps import RalphAppConfig
+
+
+class Networks(RalphAppConfig):
+    name = 'ralph.networks'
+
+    def ready(self):
+        if not settings.ENABLE_DNSAAS_INTEGRATION:
+            return
+        from ralph.networks.receivers import (
+            delete_dns_record,
+            update_dns_record
+        )
+        ip_model = self.get_model('IPAddress')
+        post_save.connect(
+            receiver=update_dns_record,
+            sender=ip_model
+        )
+        post_delete.connect(
+            receiver=delete_dns_record,
+            sender=ip_model,
+        )

src/ralph/networks/models/networks.py

@@ -20,6 +20,7 @@
     AdminAbsoluteUrlMixin,
     LastSeenMixin,
     NamedMixin,
+    PreviousStateMixin,
     TimeStampMixin
 )
 from ralph.networks.fields import IPNetwork
@@ -553,6 +554,7 @@ class IPAddress(
     AdminAbsoluteUrlMixin,
     LastSeenMixin,
     TimeStampMixin,
+    PreviousStateMixin,
     NetworkMixin,
     models.Model
 ):

src/ralph/networks/receivers.py

@@ -0,0 +1,24 @@
+from ralph.dns.dnsaas import DNSaaS
+
+
+def update_dns_record(instance, created, *args, **kwargs):
+    keys = ['address', 'hostname']
+    data_to_send = {
+        'old': {
+            key: instance._previous_state[key] for key in keys
+        },
+        'new': {
+            key: instance.__dict__[key] for key in keys
+        }
+    }
+    data_to_send['action'] = 'add' if created else 'update'
+    if data_to_send['old']['hostname'] is not None:
+        DNSaaS().send_ipaddress_data(data_to_send)
+
+
+def delete_dns_record(instance, *args, **kwargs):
+    DNSaaS().send_ipaddress_data({
+        'address': instance.address,
+        'hostname': instance.hostname,
+        'action': 'delete'
+    })