def delete_package(self, pkg_name: str, top_hash: str = None):
package_path = self.pointers_dir(pkg_name)
paths = list(list_url(package_path))
if not paths:
raise QuiltException(
"No such package exists in the given directory.")
if top_hash is not None:
top_hash = self.resolve_top_hash(pkg_name, top_hash)
deleted = []
remaining = []
for path, _ in paths:
pkg_hash = get_bytes(self.pointer_pk(pkg_name, path)).decode()
(deleted if pkg_hash == top_hash else remaining).append(path)
if not deleted:
raise QuiltException(
"No such package version exists in the given directory.")
for path in deleted:
delete_url(self.pointer_pk(pkg_name, path))
if 'latest' in deleted and remaining:
# Create a new "latest". Technically, we need to compare numerically,
# but string comparisons will be fine till year 2286.
new_latest = max(remaining)
copy_file(self.pointer_pk(pkg_name, new_latest),
self.pointer_latest_pk(pkg_name))
else:
for path, _ in paths:
delete_url(self.pointer_pk(pkg_name, path))
def delete_package_version(self, pkg_name: str, top_hash: str):
delete_url(self.manifest_pk(pkg_name, top_hash))
if get_bytes(self.pointer_latest_pk(pkg_name)).decode() == top_hash:
delete_url(self.pointer_latest_pk(pkg_name))
timestamp, new_latest = max(self.list_package_versions_with_timestamps(pkg_name), default=(None, None))
if new_latest:
put_bytes(new_latest.encode(), self.pointer_latest_pk(pkg_name))
for pointer, pointer_top_hash in self.list_package_pointers(pkg_name):
if pointer_top_hash == top_hash:
delete_url(self.pointer_pk(pkg_name, pointer))
def list_package_pointers(self, pkg_name: str):
package_dir = self.pointers_dir(pkg_name)
for path, _ in list_url(package_dir):
pkg_hash = get_bytes(package_dir.join(path))
yield path, pkg_hash.decode().strip()