Support image deletion in batches in v2

Client doesn't support image deletion in batches in v2 now.
It's useful. So it's need to add it.

Change-Id: Idf5a6890b3fd01a65fecab2033b21367c30bc6b1
Closes-bug:#1485407

glanceclient/common/utils.py

@@ -286,6 +286,10 @@ def exit(msg='', exit_code=1):
     sys.exit(exit_code)
 
 
+def print_err(msg):
+    print(encodeutils.safe_decode(msg), file=sys.stderr)
+
+
 def save_image(data, path):
     """Save an image to the specified path.
 

glanceclient/tests/unit/v2/test_shell_v2.py

@@ -13,6 +13,7 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+import argparse
 import json
 import mock
 import os
@@ -106,13 +107,15 @@ class ShellV2Test(testtools.TestCase):
         utils.print_dict = mock.Mock()
         utils.save_image = mock.Mock()
 
-    def assert_exits_with_msg(self, func, func_args, err_msg):
+    def assert_exits_with_msg(self, func, func_args, err_msg=None):
         with mock.patch.object(utils, 'exit') as mocked_utils_exit:
             mocked_utils_exit.return_value = '%s' % err_msg
 
             func(self.gc, func_args)
-
-            mocked_utils_exit.assert_called_once_with(err_msg)
+            if err_msg:
+                mocked_utils_exit.assert_called_once_with(err_msg)
+            else:
+                mocked_utils_exit.assert_called_once_with()
 
     def _run_command(self, cmd):
         self.shell.main(cmd.split())
@@ -591,24 +594,49 @@ class ShellV2Test(testtools.TestCase):
             mocked_data.assert_called_once_with('IMG-01')
 
     def test_do_image_delete(self):
-        args = self._make_args({'id': 'pass', 'file': 'test'})
+        args = argparse.Namespace(id=['image1', 'image2'])
         with mock.patch.object(self.gc.images, 'delete') as mocked_delete:
             mocked_delete.return_value = 0
 
             test_shell.do_image_delete(self.gc, args)
+            self.assertEqual(2, mocked_delete.call_count)
 
-            mocked_delete.assert_called_once_with('pass')
+    @mock.patch.object(utils, 'exit')
+    @mock.patch.object(utils, 'print_err')
+    def test_do_image_delete_with_invalid_ids(self, mocked_print_err,
+                                              mocked_utils_exit):
+        args = argparse.Namespace(id=['image1', 'image2'])
+        with mock.patch.object(self.gc.images, 'delete') as mocked_delete:
+            mocked_delete.side_effect = exc.HTTPNotFound
+
+            test_shell.do_image_delete(self.gc, args)
+
+            self.assertEqual(2, mocked_delete.call_count)
+            self.assertEqual(2, mocked_print_err.call_count)
+            mocked_utils_exit.assert_called_once_with()
+
+    @mock.patch.object(utils, 'exit')
+    @mock.patch.object(utils, 'print_err')
+    def test_do_image_delete_with_forbidden_ids(self, mocked_print_err,
+                                                mocked_utils_exit):
+        args = argparse.Namespace(id=['image1', 'image2'])
+        with mock.patch.object(self.gc.images, 'delete') as mocked_delete:
+            mocked_delete.side_effect = exc.HTTPForbidden
+
+            test_shell.do_image_delete(self.gc, args)
+
+            self.assertEqual(2, mocked_delete.call_count)
+            self.assertEqual(2, mocked_print_err.call_count)
+            mocked_utils_exit.assert_called_once_with()
 
     def test_do_image_delete_deleted(self):
         image_id = 'deleted-img'
-        args = self._make_args({'id': image_id})
-        with mock.patch.object(self.gc.images, 'delete') as mocked_get:
-            mocked_get.side_effect = exc.HTTPNotFound
+        args = argparse.Namespace(id=[image_id])
+        with mock.patch.object(self.gc.images, 'delete') as mocked_delete:
+            mocked_delete.side_effect = exc.HTTPNotFound
 
-            msg = "No image with an ID of '%s' exists." % image_id
             self.assert_exits_with_msg(func=test_shell.do_image_delete,
-                                       func_args=args,
-                                       err_msg=msg)
+                                       func_args=args)
 
     def test_do_member_list(self):
         args = self._make_args({'image_id': 'IMG-01'})

glanceclient/v2/shell.py

@@ -311,14 +311,28 @@ def do_image_upload(gc, args):
     gc.images.upload(args.id, image_data, args.size)
 
 
-@utils.arg('id', metavar='<IMAGE_ID>', help='ID of image to delete.')
+@utils.arg('id', metavar='<IMAGE_ID>', nargs='+',
+           help='ID of image(s) to delete.')
 def do_image_delete(gc, args):
     """Delete specified image."""
-    try:
-        gc.images.delete(args.id)
-    except exc.HTTPNotFound:
-        msg = "No image with an ID of '%s' exists." % args.id
-        utils.exit(msg)
+    failure_flag = False
+    for args_id in args.id:
+        try:
+            gc.images.delete(args_id)
+        except exc.HTTPForbidden:
+            msg = "You are not permitted to delete the image '%s'." % args_id
+            utils.print_err(msg)
+            failure_flag = True
+        except exc.HTTPNotFound:
+            msg = "No image with an ID of '%s' exists." % args_id
+            utils.print_err(msg)
+            failure_flag = True
+        except exc.HTTPException as e:
+            msg = "'%s': Unable to delete image '%s'" % (e, args_id)
+            utils.print_err(msg)
+            failure_flag = True
+    if failure_flag:
+        utils.exit()
 
 
 @utils.arg('image_id', metavar='<IMAGE_ID>',