Move keep_old check up into Project

Signed-off-by: Chris Corbyn <chris@w3style.co.uk>

fig/project.py

@@ -139,13 +139,17 @@ class Project(object):
                 log.info('%s uses an image, skipping' % service.name)
 
     def up(self, service_names=None, start_links=True, keep_old=False):
-        new_containers = []
+        running_containers = []
 
         for service in self.get_services(service_names, include_links=start_links):
-            for (_, new) in service.recreate_containers(keep_old):
-                new_containers.append(new)
+            if keep_old:
+                for container in service.start_or_create_containers():
+                    running_containers.append(container)
+            else:
+                for (_, container) in service.recreate_containers():
+                    running_containers.append(container)
 
-        return new_containers
+        return running_containers
 
     def remove_stopped(self, service_names=None, **options):
         for service in self.get_services(service_names):

fig/service.py

@@ -154,7 +154,7 @@ class Service(object):
                 return Container.create(self.client, **container_options)
             raise
 
-    def recreate_containers(self, keep_old=False, **override_options):
+    def recreate_containers(self, **override_options):
         """
         If a container for this service doesn't exist, create and start one. If there are
         any, stop them, create+start new ones, and remove the old containers.
@@ -166,8 +166,6 @@ class Service(object):
             container = self.create_container(**override_options)
             self.start_container(container)
             return [(None, container)]
-        elif keep_old:
-            return [(None, self.start_container_if_stopped(c)) for c in containers]
         else:
             tuples = []
 
@@ -249,6 +247,16 @@ class Service(object):
         )
         return container
 
+    def start_or_create_containers(self):
+        containers = self.containers(stopped=True)
+
+        if len(containers) == 0:
+            log.info("Creating %s..." % self.next_container_name())
+            new_container = self.create_container()
+            return [self.start_container(new_container)]
+        else:
+            return [self.start_container_if_stopped(c) for c in containers]
+
     def get_linked_names(self):
         return [s.name for (s, _) in self.links]
 

tests/integration/project_test.py

@@ -74,7 +74,7 @@ class ProjectTest(DockerClientTestCase):
         project.kill()
         project.remove_stopped()
 
-    def test_project_up_with_keep_old(self):
+    def test_project_up_with_keep_old_running(self):
         web = self.create_service('web')
         db = self.create_service('db', volumes=['/var/db'])
         project = Project('figtest', [web, db], self.client)
@@ -96,6 +96,34 @@ class ProjectTest(DockerClientTestCase):
         project.kill()
         project.remove_stopped()
 
+    def test_project_up_with_keep_old_stopped(self):
+        web = self.create_service('web')
+        db = self.create_service('db', volumes=['/var/db'])
+        project = Project('figtest', [web, db], self.client)
+        project.start()
+        self.assertEqual(len(project.containers()), 0)
+
+        project.up(['db'])
+        project.stop()
+
+        old_containers = project.containers(stopped=True)
+
+        self.assertEqual(len(old_containers), 1)
+        old_db_id = old_containers[0].id
+        db_volume_path = old_containers[0].inspect()['Volumes']['/var/db']
+
+        project.up(keep_old=True)
+
+        new_containers = project.containers(stopped=True)
+        self.assertEqual(len(new_containers), 2)
+
+        db_container = [c for c in new_containers if 'db' in c.name][0]
+        self.assertEqual(c.id, old_db_id)
+        self.assertEqual(c.inspect()['Volumes']['/var/db'], db_volume_path)
+
+        project.kill()
+        project.remove_stopped()
+
     def test_project_up_without_auto_start(self):
         console = self.create_service('console', auto_start=False)
         db = self.create_service('db')

tests/integration/service_test.py

@@ -132,52 +132,6 @@ class ServiceTest(DockerClientTestCase):
         self.assertNotEqual(old_container.id, new_container.id)
         self.assertRaises(APIError, lambda: self.client.inspect_container(intermediate_container.id))
 
-    def test_recreate_containers_with_keep_old_running(self):
-        service = self.create_service(
-            'db',
-            environment={'FOO': '1'},
-            volumes=['/var/db'],
-            entrypoint=['ps'],
-            command=['ax']
-        )
-        old_container = service.create_container()
-        service.start_container(old_container)
-
-        num_containers_before = len(self.client.containers(all=True))
-
-        tuples = service.recreate_containers(keep_old=True)
-        self.assertEqual(len(tuples), 1)
-
-        intermediate_container = tuples[0][0]
-        new_container = tuples[0][1]
-
-        self.assertIsNone(intermediate_container)
-        self.assertEqual(len(self.client.containers(all=True)), num_containers_before)
-        self.assertEqual(old_container.id, new_container.id)
-
-    def test_recreate_containers_with_keep_old_stopped(self):
-        service = self.create_service(
-            'db',
-            environment={'FOO': '1'},
-            volumes=['/var/db'],
-            entrypoint=['ps'],
-            command=['ax']
-        )
-        old_container = service.create_container()
-        old_container.stop()
-
-        num_containers_before = len(self.client.containers(all=True))
-
-        tuples = service.recreate_containers(keep_old=True)
-        self.assertEqual(len(tuples), 1)
-
-        intermediate_container = tuples[0][0]
-        new_container = tuples[0][1]
-
-        self.assertIsNone(intermediate_container)
-        self.assertEqual(len(self.client.containers(all=True)), num_containers_before)
-        self.assertEqual(old_container.id, new_container.id)
-
     def test_start_container_passes_through_options(self):
         db = self.create_service('db')
         db.start_container(environment={'FOO': 'BAR'})