Add support for ignored records.

```yaml
ignored:
  octodns:
    ignored: true
  type: A
  value: 1.2.3.4
```

octodns/record.py

@@ -112,6 +112,9 @@ class Record(object):
             raise Exception('Invalid record {}, missing ttl'.format(self.fqdn))
         self.source = source
 
+        octodns = data.get('octodns', {})
+        self.ignored = octodns.get('ignored', False)
+
     def _data(self):
         return {'ttl': self.ttl}
 

octodns/zone.py

@@ -76,8 +76,12 @@ class Zone(object):
 
         # Find diffs & removes
         for record in filter(_is_eligible, self.records):
+            if record.ignored:
+                continue
             try:
                 desired_record = desired_records[record]
+                if desired_record.ignored:
+                    continue
             except KeyError:
                 if not target.supports(record):
                     self.log.debug('changes:  skipping record=%s %s - %s does '
@@ -103,6 +107,8 @@ class Zone(object):
         # This uses set math and our special __hash__ and __cmp__ functions as
         # well
         for record in filter(_is_eligible, desired.records - self.records):
+            if record.ignored:
+                continue
             if not target.supports(record):
                 self.log.debug('changes:  skipping record=%s %s - %s does not '
                                'support it', record.fqdn, record._type,

tests/config/unit.tests.yaml

@@ -51,6 +51,11 @@ cname:
   ttl: 300
   type: CNAME
   value: unit.tests.
+ignored:
+  octodns:
+    ignored: true
+  type: A
+  value: 9.9.9.9
 mx:
   ttl: 300
   type: MX

tests/test_octodns_provider_dnsimple.py

@@ -129,8 +129,8 @@ class TestDnsimpleProvider(TestCase):
         ]
         plan = provider.plan(self.expected)
 
-        # No root NS
+        # No root NS, no ignored
-        n = len(self.expected.records) - 1
+        n = len(self.expected.records) - 2
         self.assertEquals(n, len(plan.changes))
         self.assertEquals(n, provider.apply(plan))
 

tests/test_octodns_provider_powerdns.py

@@ -78,7 +78,8 @@ class TestPowerDnsProvider(TestCase):
         expected = Zone('unit.tests.', [])
         source = YamlProvider('test', join(dirname(__file__), 'config'))
         source.populate(expected)
-        self.assertEquals(14, len(expected.records))
+        expected_n = len(expected.records) - 1
+        self.assertEquals(14, expected_n)
 
         # No diffs == no changes
         with requests_mock() as mock:
@@ -93,7 +94,7 @@ class TestPowerDnsProvider(TestCase):
         # Used in a minute
         def assert_rrsets_callback(request, context):
             data = loads(request.body)
-            self.assertEquals(len(expected.records), len(data['rrsets']))
+            self.assertEquals(expected_n, len(data['rrsets']))
             return ''
 
         # No existing records -> creates for every record in expected
@@ -103,8 +104,8 @@ class TestPowerDnsProvider(TestCase):
             mock.patch(ANY, status_code=201, text=assert_rrsets_callback)
 
             plan = provider.plan(expected)
-            self.assertEquals(len(expected.records), len(plan.changes))
+            self.assertEquals(expected_n, len(plan.changes))
-            self.assertEquals(len(expected.records), provider.apply(plan))
+            self.assertEquals(expected_n, provider.apply(plan))
 
         # Non-existent zone -> creates for every record in expected
         # OMG this is fucking ugly, probably better to ditch requests_mocks and
@@ -121,8 +122,8 @@ class TestPowerDnsProvider(TestCase):
             mock.post(ANY, status_code=201, text=assert_rrsets_callback)
 
             plan = provider.plan(expected)
-            self.assertEquals(len(expected.records), len(plan.changes))
+            self.assertEquals(expected_n, len(plan.changes))
-            self.assertEquals(len(expected.records), provider.apply(plan))
+            self.assertEquals(expected_n, provider.apply(plan))
 
         with requests_mock() as mock:
             # get 422's, unknown zone
@@ -166,7 +167,7 @@ class TestPowerDnsProvider(TestCase):
         expected = Zone('unit.tests.', [])
         source = YamlProvider('test', join(dirname(__file__), 'config'))
         source.populate(expected)
-        self.assertEquals(14, len(expected.records))
+        self.assertEquals(15, len(expected.records))
 
         # A small change to a single record
         with requests_mock() as mock:

tests/test_octodns_provider_yaml.py

@@ -30,7 +30,7 @@ class TestYamlProvider(TestCase):
 
         # without it we see everything
         source.populate(zone)
-        self.assertEquals(14, len(zone.records))
+        self.assertEquals(15, len(zone.records))
 
         # Assumption here is that a clean round-trip means that everything
         # worked as expected, data that went in came back out and could be

tests/test_octodns_zone.py

@@ -172,3 +172,36 @@ class TestZone(TestCase):
         with self.assertRaises(SubzoneRecordException) as ctx:
             zone.add_record(record)
         self.assertTrue('under a managed sub-zone', ctx.exception.message)
+
+    def test_ignored_records(self):
+        zone_normal = Zone('unit.tests.', [])
+        zone_ignored = Zone('unit.tests.', [])
+        zone_missing = Zone('unit.tests.', [])
+
+        normal = Record.new(zone_normal, 'www', {
+            'ttl': 60,
+            'type': 'A',
+            'value': '9.9.9.9',
+        })
+        zone_normal.add_record(normal)
+
+        ignored = Record.new(zone_ignored, 'www', {
+            'octodns': {
+                'ignored': True
+            },
+            'ttl': 60,
+            'type': 'A',
+            'value': '9.9.9.9',
+        })
+        zone_ignored.add_record(ignored)
+
+        provider = SimpleProvider()
+
+        self.assertFalse(zone_normal.changes(zone_ignored, provider))
+        self.assertTrue(zone_normal.changes(zone_missing, provider))
+
+        self.assertFalse(zone_ignored.changes(zone_normal, provider))
+        self.assertFalse(zone_ignored.changes(zone_missing, provider))
+
+        self.assertTrue(zone_missing.changes(zone_normal, provider))
+        self.assertFalse(zone_missing.changes(zone_ignored, provider))