rebuild a container with a different image

rebuild a container with a different image.
by this way, you can upgrade the container.
For example, rebuild a ubuntu:14.04 container to ubuntu:16.04 for upgrade.

Change-Id: Id08f7dca5de019da33695561f69976aaed6a022c
Implements:blueprint replace-image

zunclient/osc/v1/containers.py

@@ -1134,6 +1134,18 @@ class RebuildContainer(command.Command):
             metavar='<container>',
             nargs='+',
             help='ID or name of the (container)s to rebuild.')
+        parser.add_argument(
+            '--image',
+            metavar='<image>',
+            help='The image for specified container to update.')
+        parser.add_argument(
+            '--image-driver',
+            metavar='<image_driver>',
+            help='The image driver to use to update container image. '
+                 'It can have following values: '
+                 '"docker": update the image from Docker Hub. '
+                 '"glance": update the image from Glance. '
+                 'The default value is source container\'s image driver ')
         return parser
 
     def take_action(self, parsed_args):
@@ -1141,6 +1153,10 @@ class RebuildContainer(command.Command):
         for container in parsed_args.containers:
             opts = {}
             opts['id'] = container
+            if parsed_args.image:
+                opts['image'] = parsed_args.image
+            if parsed_args.image_driver:
+                opts['image_driver'] = parsed_args.image_driver
             try:
                 client.containers.rebuild(**opts)
                 print(_('Request to rebuild container %s has '

zunclient/tests/unit/v1/test_containers.py

@@ -336,7 +336,7 @@ fake_responses = {
             None,
         ),
     },
-    '/v1/containers/%s/rebuild'
+    '/v1/containers/%s/rebuild?image=cirros'
     % (CONTAINER1['id']):
     {
         'POST': (
@@ -711,10 +711,12 @@ class ContainerManagerTest(testtools.TestCase):
         self.assertTrue(containers)
 
     def test_containers_rebuild(self):
-        self.mgr.rebuild(CONTAINER1['id'])
+        opts = {'image': 'cirros'}
+        self.mgr.rebuild(CONTAINER1['id'], **opts)
         expect = [
             ('POST',
-             '/v1/containers/%s/rebuild' % (CONTAINER1['id']),
+             '/v1/containers/%s/rebuild?image=cirros'
+             % (CONTAINER1['id']),
              {'Content-Length': '0'}, None)
         ]
         self.assertEqual(expect, self.api.calls)

zunclient/v1/containers.py

@@ -130,8 +130,9 @@ class ContainerManager(base.Manager):
         return self._action(id, '/stop',
                             qparams={'timeout': timeout})
 
-    def rebuild(self, id):
+    def rebuild(self, id, **kwargs):
-        return self._action(id, '/rebuild')
+        return self._action(id, '/rebuild',
+                            qparams=kwargs)
 
     def restart(self, id, timeout):
         return self._action(id, '/reboot',

zunclient/v1/containers_shell.py

@@ -262,11 +262,27 @@ def do_show(cs, args):
            metavar='<container>',
            nargs='+',
            help='ID of the (container)s to rebuild.')
+@utils.arg('--image',
+           metavar='<image>',
+           help='The image for specified container to update.')
+@utils.arg('--image-driver',
+           metavar='<image_driver>',
+           help='The image driver to use to pull container image. '
+                'It can have following values: '
+                '"docker": pull the image from Docker Hub. '
+                '"glance": pull the image from Glance. '
+                'The default value is source container\'s image driver ')
 def do_rebuild(cs, args):
     """Rebuild specified containers."""
     for container in args.containers:
+        opts = {}
+        opts['id'] = container
+        if args.image:
+            opts['image'] = args.image
+        if args.image_driver:
+            opts['image_driver'] = args.image_driver
         try:
-            cs.containers.rebuild(container)
+            cs.containers.rebuild(**opts)
             print("Request to rebuild container %s has been accepted." %
                   container)
         except Exception as e: