libdnf5 load repositories from cache without network

[huakim]

Can i load all enabled repos without internet network with c++ and libdnf5 library?
I already tried to do so:
auto base = new libdnf5::base::Base(); base->load_config_from_file(); base->setup(); base->create_repos_from_system_configuration(); base->repo_sack->update_and_load_enabled_repos(true);
But it's takes a lot of time.
It seems that using the cache, created with dnf makecache would speed up the procedure considerably.
Thanks.

[kontura]

You can use the cacheonly config option, it has 3 possible values: all, metadata and none (none is default).
If you set metadata no new metadata should be downloaded.
For example:

#include <iostream>
#include <libdnf5/base/base.hpp>
#include <libdnf5/rpm/package_query.hpp>

int main() {
    libdnf5::Base base;
    base.get_config().get_cacheonly_option().set("metadata");
    base.setup();

    auto repo_sack = base.get_repo_sack();
    repo_sack->create_repos_from_system_configuration();
    repo_sack->update_and_load_enabled_repos(true);

    libdnf5::rpm::PackageQuery query(base);
    query.filter_name({"htop"});
    for (const auto & pkg : query) {
        std::cout << pkg.get_nevra() << std::endl;
    }
}