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Code Issues Releases Activity

[fast-deps] Check download directory before making requests

This commit is contained in:
Nguyễn Gia Phong 2020-08-25 22:06:44 +07:00
parent 53efda742b
commit c947d00882
2 changed files with 18 additions and 14 deletions
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3
news/8804.feature Normal file
View File

@ -0,0 +1,3 @@
Check the download directory for existing wheels to possibly avoid
fetching metadata when the ``fast-deps`` feature is used with
``pip wheel`` and ``pip download``.

29
src/pip/_internal/operations/prepare.py
View File

@ -486,26 +486,27 @@ class RequirementPreparer(object):
link = req.link
self._log_preparing_link(req)
with indent_log():
wheel_dist = self._fetch_metadata_using_lazy_wheel(link)
if wheel_dist is not None:
req.needs_more_preparation = True
return wheel_dist
download_dir = self._get_download_dir(req.link)
if download_dir is not None and link.is_wheel:
hashes = self._get_linked_req_hashes(req)
file_path = _check_download_dir(req.link, download_dir, hashes)
if file_path is not None:
self._downloaded[req.link.url] = file_path, None
else:
file_path = None
if file_path is None:
wheel_dist = self._fetch_metadata_using_lazy_wheel(link)
if wheel_dist is not None:
req.needs_more_preparation = True
return wheel_dist
return self._prepare_linked_requirement(req, parallel_builds)
def prepare_linked_requirements_more(self, reqs, parallel_builds=False):
# type: (Iterable[InstallRequirement], bool) -> None
"""Prepare a linked requirement more, if needed."""
reqs = [req for req in reqs if req.needs_more_preparation]
links = [] # type: List[Link]
for req in reqs:
download_dir = self._get_download_dir(req.link)
if download_dir is not None:
hashes = self._get_linked_req_hashes(req)
file_path = _check_download_dir(req.link, download_dir, hashes)
if download_dir is None or file_path is None:
links.append(req.link)
else:
self._downloaded[req.link.url] = file_path, None
links = [req.link for req in reqs]
# Let's download to a temporary directory.
tmpdir = TempDirectory(kind="unpack", globally_managed=True).path