Allow to blacklist some projects to declare branch independence

Change-Id: Ib48246721f56bc928c1d9b40ebc03fd0d3a24c37

openstack_releases/cmds/validate.py

@@ -64,6 +64,9 @@ _VALID_BRANCH_PREFIXES = set([
     'feature',
     'driverfixes',
 ])
+_NO_STABLE_BRANCH_CHECK = set([
+    'gnocchi',
+])
 _PLEASE = ('It is too expensive to determine this value during '
            'the site build, please set it explicitly.')
 
@@ -425,6 +428,9 @@ def validate_branch_prefixes(deliverable_info, mk_waring, mk_error):
 
 def validate_stable_branches(deliverable_info, mk_warning, mk_error):
     "Apply the rules for stable branches."
+    if ('launchpad' in deliverable_info and
+       deliverable_info['launchpad'] in _NO_STABLE_BRANCH_CHECK):
+        return
     branches = deliverable_info.get('branches', [])
     known_releases = list(
         r['version']

openstack_releases/tests/test_validate.py

@@ -1051,6 +1051,29 @@ class TestValidateStableBranches(base.BaseTestCase):
         self.assertEqual(0, len(warnings))
         self.assertEqual(1, len(errors))
 
+    def test_can_have_independent_branches(self):
+        deliverable_data = textwrap.dedent('''
+        launchpad: gnocchi
+        releases:
+          - version: 1.5.0
+            projects:
+              - repo: openstack/automaton
+                hash: be2885f544637e6ee6139df7dc7bf937925804dd
+        branches:
+          - name: stable/abc
+            location: 1.5.0
+        ''')
+        warnings = []
+        errors = []
+        deliverable_info = yaml.safe_load(deliverable_data)
+        validate.validate_stable_branches(
+            deliverable_info,
+            warnings.append,
+            errors.append,
+        )
+        self.assertEqual(0, len(warnings))
+        self.assertEqual(0, len(errors))
+
 
 class TestValidateFeatureBranches(base.BaseTestCase):