rwlaunchpad/plugins/rwlaunchpadtasklet/rift/package/image.py

   1
   2 #
   3 #   Copyright 2016 RIFT.IO Inc
   4 #
   5 #   Licensed under the Apache License, Version 2.0 (the "License");
   6 #   you may not use this file except in compliance with the License.
   7 #   You may obtain a copy of the License at
   8 #
   9 #       http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 #   Unless required by applicable law or agreed to in writing, software
  12 #   distributed under the License is distributed on an "AS IS" BASIS,
  13 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 #   See the License for the specific language governing permissions and
  15 #   limitations under the License.
  16 #
  17
  18 import re
  19
  20 IMAGE_REGEX = r"{prefix}/?images/(?P<image_name>[^/]+.\.qcow2)$"
  21
  22
  23 def is_image_file(image_path):
  24     match = re.match(
  25             IMAGE_REGEX.format(prefix=".*"),
  26             image_path,
  27             )
  28
  29     return match is not None
  30
  31
  32 def get_package_image_files(package):
  33     """ Return a image name/file map for images in the descriptor
  34
  35     Arguments:
  36         package - A DescriptorPackage
  37
  38     Returns:
  39         A dictionary mapping image names to the relative path within
  40         the package.
  41     """
  42     image_file_map = {}
  43
  44     for file_name in package.files:
  45         match = re.match(
  46                 IMAGE_REGEX.format(prefix=package.prefix),
  47                 file_name,
  48                 )
  49         if match is None:
  50             continue
  51
  52         image_name = match.group("image_name")
  53         image_file_map[image_name] = file_name
  54
  55     return image_file_map