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  # Copyright 2014, Craig Tracey <craigtracey@gmail.com>
  # All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License. You may obtain
  # a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  # License for the specific language governing permissions and limitations
  
  import yaml
  
  from giftwrap.openstack_project import OpenstackProject
  from giftwrap.settings import Settings
  
  
  class BuildSpec(object):
  
      def __init__(self, manifest, version, build_type=None, parallel=True,
                   limit_projects=None):
          self._manifest = yaml.load(manifest)
          self.version = version
          self.build_type = build_type
          manifest_settings = self._manifest['settings']
          if version:
              manifest_settings['version'] = version
          if build_type:
              manifest_settings['build_type'] = build_type
          if build_type == 'docker':
              parallel = False
          manifest_settings['parallel_build'] = parallel
          self.settings = Settings.factory(manifest_settings)
          self.projects = self._render_projects(limit_projects)
  
      def _render_projects(self, limit_projects):
          projects = []
          if 'projects' in self._manifest:
              for project in self._manifest['projects']:
                  if limit_projects is None or project['name'] in limit_projects:
                      projects.append(OpenstackProject.factory(self.settings,
                                                               project,
                                                               self.version))
          return projects
  