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rpm-software-management / librepo

A library providing C and Python (libcURL like) API for downloading packages and linux repository metadata in rpm-md format
http://rpm-software-management.github.io/librepo/
GNU Lesser General Public License v2.1
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Specify repomd.xml which is not redownloaded if not modified since its mtime #246

Closed kontura closed 3 years ago

kontura commented 3 years ago

This uses the if-modified-since header (via libcurl) so that we don't have to redownload identical repomd.xml from servers that support this.

It can be used by specifying a path to existing repomd.xml in the librepo handle. mtime of this repomd.xml is then used in the if-modified-since header and if the server returns 304 (the file wasn't modified since) we copy the current repomd.xml to the new target location which ensures librepo and all the other tooling can continue as if it was downloaded.

= changelog = msg: Use if-modified-since header to avoid redownload if path to exisiting repomd is specified type: enhancement resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1855296

kontura commented 3 years ago

For: https://github.com/rpm-software-management/libdnf/pull/1243

Tests: https://github.com/rpm-software-management/ci-dnf-stack/pull/1002

kontura commented 3 years ago

We have decided not to continue with this, more info in the bz1855296.