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[Merge] ~mfo/maas:3.1 into maas:3.1

 

Mauricio Faria de Oliveira has proposed merging ~mfo/maas:3.1 into maas:3.1.

Requested reviews:
  Mauricio Faria de Oliveira (mfo)
Related bugs:
  Bug #1807725 in MAAS: "Machine interfaces allow '_' character, results on a interface based domain breaking bind (as it doesn't allow it for the host part)."
  https://bugs.launchpad.net/maas/+bug/1807725

For more details, see:
https://code.launchpad.net/~mfo/maas/+git/maas/+merge/444214

Please ignore; this is for testing only.
-- 
Your team MAAS Committers is subscribed to branch maas:3.1.
diff --git a/debian/changelog b/debian/changelog
index 07efecd..204172d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+maas (1:3.1.2~rc1-0ubuntu1) focal; urgency=medium
+
+  * New upstream release, MAAS 3.1.2 RC1.
+
+ -- Mauricio Faria de Oliveira <mfo@xxxxxxxxxxxxx>  Tue, 06 Jun 2023 20:33:57 -0300
+
 maas (1:3.1.1-0ubuntu1) focal; urgency=medium
 
   * New upstream release, MAAS 3.1.1.
diff --git a/setup.cfg b/setup.cfg
index 8ca0ea2..ca76a6a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = maas
-version = 3.1.1
+version = 3.1.2rc1
 description = Metal As A Service
 long_description = file: README.rst
 url = https://maas.io/
diff --git a/src/maasserver/models/staticipaddress.py b/src/maasserver/models/staticipaddress.py
index af330da..306fb83 100644
--- a/src/maasserver/models/staticipaddress.py
+++ b/src/maasserver/models/staticipaddress.py
@@ -45,7 +45,10 @@ from maasserver.models.domain import Domain
 from maasserver.models.subnet import Subnet
 from maasserver.models.timestampedmodel import TimestampedModel
 from maasserver.utils import orm
-from maasserver.utils.dns import get_ip_based_hostname
+from maasserver.utils.dns import (
+    get_iface_name_based_hostname,
+    get_ip_based_hostname,
+)
 from provisioningserver.utils.enum import map_enum_reverse
 
 _mapping_base_fields = (
@@ -748,7 +751,14 @@ class StaticIPAddressManager(Manager):
             # node, then consider adding the IP.
             if result.assigned or not assigned_ips[result.fqdn]:
                 if result.ip not in mapping[result.fqdn].ips:
-                    entry = mapping["%s.%s" % (result.iface_name, result.fqdn)]
+                    fqdn = mapping[
+                        "%s.%s"
+                        % (
+                            get_iface_name_based_hostname(result.iface_name),
+                            result.fqdn,
+                        )
+                    ]
+                    entry = mapping[fqdn]
                     entry.node_type = result.node_type
                     entry.system_id = result.system_id
                     if result.user_id is not None:
diff --git a/src/maasserver/models/tests/test_staticipaddress.py b/src/maasserver/models/tests/test_staticipaddress.py
index 75f9a5e..f62b072 100644
--- a/src/maasserver/models/tests/test_staticipaddress.py
+++ b/src/maasserver/models/tests/test_staticipaddress.py
@@ -53,7 +53,10 @@ from maasserver.testing.testcase import (
     MAASTransactionServerTestCase,
 )
 from maasserver.utils import orm
-from maasserver.utils.dns import get_ip_based_hostname
+from maasserver.utils.dns import (
+    get_iface_name_based_hostname,
+    get_ip_based_hostname,
+)
 from maasserver.utils.orm import reload_object, transactional
 from maasserver.websockets.base import dehydrate_datetime
 
@@ -496,6 +499,47 @@ class TestStaticIPAddressManagerMapping(MAASServerTestCase):
         }
         self.assertEqual(expected, mapping)
 
+    def test_get_hostname_ip_mapping_sanitized_iface_name(self):
+        hostname = factory.make_name("hostname")
+        domainname = factory.make_name("domain")
+        factory.make_Domain(name=domainname)
+        full_hostname = f"{hostname}.{domainname}"
+        subnet = factory.make_Subnet()
+        node = factory.make_Node_with_Interface_on_Subnet(
+            extra_ifnames=["eth_1"],
+            hostname=full_hostname,
+            interface_count=2,
+            subnet=subnet,
+        )
+        boot_interface = node.get_boot_interface()
+        staticip = factory.make_StaticIPAddress(
+            alloc_type=IPADDRESS_TYPE.STICKY,
+            ip=factory.pick_ip_in_Subnet(subnet),
+            subnet=subnet,
+            interface=boot_interface,
+        )
+        iface2 = node.current_config.interface_set.exclude(
+            id=boot_interface.id
+        ).first()
+        sip2 = factory.make_StaticIPAddress(
+            alloc_type=IPADDRESS_TYPE.STICKY,
+            ip=factory.pick_ip_in_Subnet(subnet),
+            subnet=subnet,
+            interface=iface2,
+        )
+        mapping = StaticIPAddress.objects.get_hostname_ip_mapping(subnet)
+        sanitized_if2name = get_iface_name_based_hostname(iface2.name)
+        expected = {
+            full_hostname: HostnameIPMapping(
+                node.system_id, 30, {staticip.ip}, node.node_type
+            ),
+            "%s.%s"
+            % (sanitized_if2name, full_hostname): HostnameIPMapping(
+                node.system_id, 30, {sip2.ip}, node.node_type
+            ),
+        }
+        self.assertEqual(expected, mapping)
+
     def make_mapping(self, node, raw_ttl=False):
         if raw_ttl or node.address_ttl is not None:
             ttl = node.address_ttl
diff --git a/src/maasserver/utils/dns.py b/src/maasserver/utils/dns.py
index 0c8cde5..76f553a 100644
--- a/src/maasserver/utils/dns.py
+++ b/src/maasserver/utils/dns.py
@@ -91,6 +91,16 @@ def get_ip_based_hostname(ip):
     return hostname
 
 
+def get_iface_name_based_hostname(iface_name):
+    """Given the specified interface name, creates an automatically generated
+    hostname by converting the '_' characters in it to '-' characters.
+
+    :param iface_name: Input value for the interface name.
+    """
+    hostname = iface_name.replace("_", "-")
+    return hostname
+
+
 def validate_url(url, schemes=("http", "https")):
     """Validator for URLs.
 
diff --git a/src/maasserver/utils/tests/test_dns.py b/src/maasserver/utils/tests/test_dns.py
index e6be8ab..41cfe80 100644
--- a/src/maasserver/utils/tests/test_dns.py
+++ b/src/maasserver/utils/tests/test_dns.py
@@ -8,6 +8,7 @@ from django.core.validators import URLValidator
 from testtools.matchers import Equals, HasLength
 
 from maasserver.utils.dns import (
+    get_iface_name_based_hostname,
     get_ip_based_hostname,
     validate_domain_name,
     validate_hostname,
@@ -244,3 +245,11 @@ class TestIpBasedHostnameGenerator(MAASTestCase):
             get_ip_based_hostname("2001:67c:1562::15"),
             Equals("2001-67c-1562--15"),
         )
+
+
+class TestIfaceBasedHostnameGenerator(MAASTestCase):
+    def test_interface_name_changed(self):
+        self.assertEqual(get_iface_name_based_hostname("eth_0"), "eth-0")
+
+    def test_interface_name_unchanged(self):
+        self.assertEqual(get_iface_name_based_hostname("eth0"), "eth0")

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