Remove netaddr module requirement

This patch removes the 'netaddr' module from the Designate requirements list.
It replaces the use of netaddr in Designate with the python standard library 'ipaddress' module.

Change-Id: I2fb1549e1d6cbccf58c03810c7d74c8c378682d5

5 files changed, 14 insertions, 10 deletions

diff --git a/contrib/fixleadingzeros.py b/contrib/fixleadingzeros.py
index cdf49f1d..3659a29a 100755
--- a/contrib/fixleadingzeros.py
+++ b/contrib/fixleadingzeros.py
@@ -15,6 +15,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 import argparse
+import ipaddress
 import logging
 import sys
 
@@ -22,7 +23,6 @@ import dns.exception
 from dns.ipv4 import inet_aton
 from keystoneauth1.identity import generic
 from keystoneauth1 import session as keystone_session
-import netaddr
 
 from designateclient import shell
 from designateclient.v2 import client
@@ -72,8 +72,9 @@ def fix_bad_recordsets(bad_recordsets):
     for rs in bad_recordsets:
         new_records = []
         for ip in bad_recordsets[rs]['records']:
+            ip = '.'.join(f'{int(i)}' for i in ip.split('.'))
             new_records.append(
-                str(netaddr.IPAddress(ip, flags=netaddr.ZEROFILL).ipv4())
+                str(ipaddress.IPv4Address(ip))
             )
         bad_recordsets[rs]['records'] = new_records
     return bad_recordsets
diff --git a/designate/backend/impl_pdns4.py b/designate/backend/impl_pdns4.py
index a7e8cf6e..30172233 100644
--- a/designate/backend/impl_pdns4.py
+++ b/designate/backend/impl_pdns4.py
@@ -11,10 +11,10 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
+import ipaddress
 import os.path
 import urllib
 
-import netaddr
 from oslo_config import cfg
 from oslo_log import log as logging
 import requests
@@ -83,7 +83,7 @@ class PDNS4Backend(base.Backend):
         masters = []
         for master in self.masters:
             host = master.host
-            if netaddr.IPAddress(host).version == 6:
+            if ipaddress.ip_address(host).version == 6:
                 host = '[%s]' % host
             masters.append('%s:%d' % (host, master.port))
 
diff --git a/designate/schema/format.py b/designate/schema/format.py
index bbed2017..72f968c4 100644
--- a/designate/schema/format.py
+++ b/designate/schema/format.py
@@ -13,10 +13,10 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
+import ipaddress
 import re
 
 import jsonschema
-import netaddr
 
 
 # NOTE(kiall): All of the below regular expressions are terminated with
@@ -59,9 +59,7 @@ def is_ipv4(instance):
         return True
 
     try:
-        address = netaddr.IPAddress(instance, version=4)
-        # netaddr happly accepts, and expands "127.0" into "127.0.0.0"
-        if str(address) != instance:
+        if ipaddress.ip_address(instance).version != 4:
             return False
     except Exception:
         return False
@@ -79,7 +77,8 @@ def is_ipv6(instance):
         return True
 
     try:
-        netaddr.IPAddress(instance, version=6)
+        if ipaddress.ip_address(instance).version != 6:
+            return False
     except Exception:
         return False
 
diff --git a/releasenotes/notes/remove-netaddr-requirement-ab9b9c2d15aa8e1c.yaml b/releasenotes/notes/remove-netaddr-requirement-ab9b9c2d15aa8e1c.yaml
new file mode 100644
index 00000000..fb810839
--- /dev/null
+++ b/releasenotes/notes/remove-netaddr-requirement-ab9b9c2d15aa8e1c.yaml
@@ -0,0 +1,5 @@
+---
+other:
+  - |
+    The netaddr python module has been removed as a Designate requirement. It
+    has been replaced with the python standard library 'ipaddress' module.
diff --git a/requirements.txt b/requirements.txt
index 6fa0ddf9..ac138eb2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,6 @@ Jinja2>=2.10 # BSD License (3 clause)
 jsonschema>=3.2.0 # MIT
 keystoneauth1>=3.4.0 # Apache-2.0
 keystonemiddleware>=4.17.0 # Apache-2.0
-netaddr>=0.7.18 # BSD
 oslo.config>=6.8.0 # Apache-2.0
 oslo.concurrency>=4.2.0 # Apache-2.0
 oslo.messaging>=12.4.0 # Apache-2.0