Move build labels parsing to config module

Signed-off-by: Joffrey F <joffrey@docker.com>

compose/config/config.py

@@ -707,16 +707,16 @@ def process_service(service_config):
     if 'build' in service_dict:
         if isinstance(service_dict['build'], six.string_types):
             service_dict['build'] = resolve_build_path(working_dir, service_dict['build'])
-        elif isinstance(service_dict['build'], dict) and 'context' in service_dict['build']:
-            path = service_dict['build']['context']
-            service_dict['build']['context'] = resolve_build_path(working_dir, path)
+        elif isinstance(service_dict['build'], dict):
+            if 'context' in service_dict['build']:
+                path = service_dict['build']['context']
+                service_dict['build']['context'] = resolve_build_path(working_dir, path)
+            if 'labels' in service_dict['build']:
+                service_dict['build']['labels'] = parse_labels(service_dict['build']['labels'])
 
     if 'volumes' in service_dict and service_dict.get('volume_driver') is None:
         service_dict['volumes'] = resolve_volume_paths(working_dir, service_dict)
 
-    if 'labels' in service_dict:
-        service_dict['labels'] = parse_labels(service_dict['labels'])
-
     if 'sysctls' in service_dict:
         service_dict['sysctls'] = build_string_dict(parse_sysctls(service_dict['sysctls']))
 

compose/service.py

@@ -23,7 +23,6 @@ from . import const
 from . import progress_stream
 from .config import DOCKER_CONFIG_KEYS
 from .config import merge_environment
-from .config.config import parse_labels
 from .config.errors import DependencyError
 from .config.types import ServicePort
 from .config.types import VolumeSpec
@@ -917,7 +916,7 @@ class Service(object):
             nocache=no_cache,
             dockerfile=build_opts.get('dockerfile', None),
             cache_from=build_opts.get('cache_from', None),
-            labels=parse_labels(build_opts.get('labels', None)),
+            labels=build_opts.get('labels', None),
             buildargs=build_args,
             network_mode=build_opts.get('network', None),
             target=build_opts.get('target', None),

tests/integration/service_test.py

@@ -761,7 +761,7 @@ class ServiceTest(DockerClientTestCase):
         assert service.image()
         assert "build_version=2" in service.image()['ContainerConfig']['Cmd']
 
-    def test_build_with_build_labels_dict(self):
+    def test_build_with_build_labels(self):
         base_dir = tempfile.mkdtemp()
         self.addCleanup(shutil.rmtree, base_dir)
 
@@ -778,23 +778,6 @@ class ServiceTest(DockerClientTestCase):
         assert service.image()
         assert service.image()['Config']['Labels']['com.docker.compose.test'] == 'true'
 
-    def test_build_with_build_labels_list(self):
-        base_dir = tempfile.mkdtemp()
-        self.addCleanup(shutil.rmtree, base_dir)
-
-        with open(os.path.join(base_dir, 'Dockerfile'), 'w') as f:
-            f.write('FROM busybox\n')
-
-        service = self.create_service('buildlabels', build={
-            'context': text_type(base_dir),
-            'labels': ['com.docker.compose.test=true']
-        })
-        service.build()
-        self.addCleanup(self.client.remove_image, service.image_name)
-
-        assert service.image()
-        assert service.image()['Config']['Labels']['com.docker.compose.test'] == 'true'
-
     @no_cluster('Container networks not on Swarm')
     def test_build_with_network(self):
         base_dir = tempfile.mkdtemp()

tests/unit/config/config_test.py

@@ -892,7 +892,7 @@ class ConfigTest(unittest.TestCase):
         assert service['build']['args']['opt1'] == '42'
         assert service['build']['args']['opt2'] == 'foobar'
 
-    def test_load_with_build_labels(self):
+    def test_load_build_labels_dict(self):
         service = config.load(
             build_config_details(
                 {
@@ -919,6 +919,28 @@ class ConfigTest(unittest.TestCase):
         assert service['build']['labels']['label1'] == 42
         assert service['build']['labels']['label2'] == 'foobar'
 
+    def test_load_build_labels_list(self):
+        base_file = config.ConfigFile(
+            'base.yml',
+            {
+                'version': '2.3',
+                'services': {
+                    'web': {
+                        'build': {
+                            'context': '.',
+                            'labels': ['foo=bar', 'baz=true', 'foobar=1']
+                        },
+                    },
+                },
+            }
+        )
+
+        details = config.ConfigDetails('.', [base_file])
+        service = config.load(details).services[0]
+        assert service['build']['labels'] == {
+            'foo': 'bar', 'baz': 'true', 'foobar': '1'
+        }
+
     def test_build_args_allow_empty_properties(self):
         service = config.load(
             build_config_details(

tests/unit/service_test.py

@@ -473,7 +473,7 @@ class ServiceTest(unittest.TestCase):
             nocache=False,
             rm=True,
             buildargs={},
-            labels={},
+            labels=None,
             cache_from=None,
             network_mode=None,
             target=None,
@@ -514,7 +514,7 @@ class ServiceTest(unittest.TestCase):
             nocache=False,
             rm=True,
             buildargs={},
-            labels={},
+            labels=None,
             cache_from=None,
             network_mode=None,
             target=None,