From 086a3a7b2576d02d580532859b6d410642a0e8e2 Mon Sep 17 00:00:00 2001
From: Tytus Kurek <tytus.kurek@canonical.com>
Date: Thu, 12 Oct 2017 20:24:52 +0200
Subject: [PATCH] Implement "dns-backend" binding

This patchset implements "dns-backend" binding which is required to
properly handle DNS zone transfers between designate and
desigante-bind applications. If "dns-backend" binding is provided
when deploying designate and designate-bind applications, DNZ zone
transfers will now take place over the subnet which belongs to the
provided space.

Change-Id: I927e3958cf929ace9d43f8b3d9509b90b9eab60f
Partial-Bug: #1722794
---
 provides.py | 3 +++
 requires.py | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/provides.py b/provides.py
index 1f79905..ca30045 100644
--- a/provides.py
+++ b/provides.py
@@ -20,6 +20,7 @@ from charms.reactive import scopes
 from charms.reactive.bus import get_states
 
 from charmhelpers.core import hookenv
+from charmhelpers.contrib.network import ip as ch_ip
 
 
 class BindRNDCProvides(RelationBase):
@@ -29,6 +30,8 @@ class BindRNDCProvides(RelationBase):
     def joined(self):
         conv = self.conversation()
         conv.set_state('{relation_name}.related')
+        conv.set_remote('private-address',
+                        ch_ip.get_relation_ip(conv.relation_name))
         hookenv.log('States: {}'.format(get_states().keys()))
 
     @hook('{provides:bind-rndc}-relation-departed')
diff --git a/requires.py b/requires.py
index f168a1d..27f2e17 100644
--- a/requires.py
+++ b/requires.py
@@ -18,6 +18,8 @@ from charms.reactive import RelationBase
 from charms.reactive import hook
 from charms.reactive import scopes
 
+from charmhelpers.contrib.network import ip as ch_ip
+
 
 class BindRNDCRequires(RelationBase):
     scope = scopes.UNIT
@@ -29,6 +31,8 @@ class BindRNDCRequires(RelationBase):
     def joined(self):
         conv = self.conversation()
         conv.set_state('{relation_name}.connected')
+        conv.set_remote('private-address',
+                        ch_ip.get_relation_ip(conv.relation_name))
 
     @hook('{requires:bind-rndc}-relation-changed')
     def changed(self):