tools/package.py

   1 # Copyright 2019 Nokia
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import yaml
  16
  17 from tools.statics import PACKAGES_CONFIG_PATH
  18
  19
  20 class PackageConfigReader(object):
  21     def __init__(self, config_file=PACKAGES_CONFIG_PATH):
  22         self.config_file = config_file
  23         self.config = None
  24         self._read_file()
  25
  26     def _read_file(self):
  27         with open(self.config_file, 'r') as fp:
  28             self.config = yaml.load(fp)
  29
  30     def get(self, package_operation_type):
  31         return self._get_packages_by_type(package_operation_type)
  32
  33     def _get_packages_by_type(self, package_operation_type):
  34         if self.config is None:
  35             return []
  36         if package_operation_type == 'install':
  37             return self._get_installed_packages()
  38         elif package_operation_type == 'uninstall':
  39             return self._get_uninstalled_packages()
  40         raise Exception('Never here')
  41
  42     def _get_uninstalled_packages(self):
  43         return sorted([p for p in self.config if not self._is_install_package(p)])
  44
  45     def _get_installed_packages(self):
  46         return sorted([p for p in self.config if self._is_install_package(p)])
  47
  48     def _is_install_package(self, package):
  49         if self.config[package] is None:
  50             return True
  51         if self.config[package].get('uninstall') is True:
  52             return False
  53         return True