def traverse(pkg):
if pkg.repository.name in filters_per_repo:
excludes_filter = filters_per_repo[pkg.repository.name]
if not excludes_filter(pkg):
consumer(
PackageRelation.from_args((pkg.name, '=', pkg.version))
)
def _get_packages(self, repositories, requirements):
if requirements:
forest = objects.PackagesForest()
package_relations = []
load_package_relations(
requirements.get('packages'), package_relations.append
)
packages_traverse = get_packages_traverse(
requirements.get('repositories'), package_relations.append
)
for repo in repositories:
tree = forest.add_tree(repo.priority)
self.controller.load_packages(
repo,
compose(
tree.add,
packages_traverse
)
)
mandatory = requirements.get('mandatory')
if mandatory:
for package in tree.mandatory_packages:
package_relations.append(
PackageRelation.from_args(
(package.name,
_MANDATORY[requirements['mandatory']],
package.version)))
return forest.get_packages(package_relations)
packages = set()
self._load_packages(repositories, packages.add)
return packages
def load_package_relations(data, consumer):
"""Gets the list PackageRelations from descriptions.
:param data: the descriptions of package relations
:param consumer: the result consumer
"""
if not data:
return
for d in data:
versions = d.get('versions', None)
if versions is None:
consumer(PackageRelation.from_args((d['name'],)))
else:
for version in versions:
consumer(PackageRelation.from_args(
([d['name']] + version.split(None, 1))
))
