Allow --file in image-create with v2 Image API

Allows passing --file and --progress to glance image-create with Image API v2.

if --file is present the image-create effectively calls image-upload with the
newly created image's id and the '--file' + '--progress' paramaters. The image
metadata will be printed after the upload call instead of after creation.

In a case argumented file does not exist the image will not be created and
error will be printed instead.

DocImpact
Closes-Bug: #1324067

Change-Id: I5d41fb2bbeb4e56213ae8696b84bf96b749414f8

glanceclient/v2/shell.py

@@ -41,6 +41,12 @@ def get_image_schema():
 @utils.arg('--property', metavar="<key=value>", action='append',
            default=[], help=('Arbitrary property to associate with image.'
                              ' May be used multiple times.'))
+@utils.arg('--file', metavar='<FILE>',
+           help='Local file to save downloaded image data to. '
+                'If this is not specified the image data will be '
+                'written to stdout.')
+@utils.arg('--progress', action='store_true', default=False,
+           help='Show upload progress bar.')
 def do_image_create(gc, args):
     """Create a new image."""
     schema = gc.schemas.get("image")
@@ -55,8 +61,19 @@ def do_image_create(gc, args):
         key, value = datum.split('=', 1)
         fields[key] = value
 
+    file_name = fields.pop('file', None)
+    if file_name is not None and os.access(file_name, os.R_OK) is False:
+        utils.exit("File %s does not exist or user does not have read "
+                   "privileges to it" % file_name)
     image = gc.images.create(**fields)
-    utils.print_image(image)
+    try:
+        if file_name is not None:
+            args.id = image['id']
+            args.size = None
+            do_image_upload(gc, args)
+            image = gc.images.get(args.id)
+    finally:
+        utils.print_image(image)
 
 
 @utils.arg('id', metavar='<IMAGE_ID>', help='ID of image to update.')

tests/v2/test_shell_v2.py

@@ -15,6 +15,8 @@
 #    under the License.
 import json
 import mock
+import os
+import tempfile
 import testtools
 
 from glanceclient.common import utils
@@ -150,6 +152,47 @@ class ShellV2Test(testtools.TestCase):
                 'id': 'pass', 'name': 'IMG-01', 'disk_format': 'vhd',
                 'container_format': 'bare'})
 
+    def test_do_image_create_with_file(self):
+        try:
+            file_name = None
+            with open(tempfile.mktemp(), 'w+') as f:
+                f.write('Some data here')
+                f.flush()
+                f.seek(0)
+                file_name = f.name
+            temp_args = {'name': 'IMG-01',
+                         'disk_format': 'vhd',
+                         'container_format': 'bare',
+                         'file': file_name,
+                         'progress': False}
+            args = self._make_args(temp_args)
+            with mock.patch.object(self.gc.images, 'create') as mocked_create:
+                with mock.patch.object(self.gc.images, 'get') as mocked_get:
+
+                    ignore_fields = ['self', 'access', 'schema']
+                    expect_image = dict([(field, field) for field in
+                                         ignore_fields])
+                    expect_image['id'] = 'pass'
+                    expect_image['name'] = 'IMG-01'
+                    expect_image['disk_format'] = 'vhd'
+                    expect_image['container_format'] = 'bare'
+                    mocked_create.return_value = expect_image
+                    mocked_get.return_value = expect_image
+
+                    test_shell.do_image_create(self.gc, args)
+
+                    temp_args.pop('file', None)
+                    mocked_create.assert_called_once_with(**temp_args)
+                    mocked_get.assert_called_once_with('pass')
+                    utils.print_dict.assert_called_once_with({
+                        'id': 'pass', 'name': 'IMG-01', 'disk_format': 'vhd',
+                        'container_format': 'bare'})
+        finally:
+            try:
+                os.remove(f.name)
+            except Exception:
+                pass
+
     def test_do_image_create_with_user_props(self):
         args = self._make_args({'name': 'IMG-01',
                                 'property': ['myprop=myval']})