Function persist_link

backend/src/bin/export.rs:457–491

(
    mutation: &mut Mutation,
    repo_link_repo_id: RepoId,
    repo_link: &mut RepoLink,
    parent_topics: &Vec<ParentTopicRow>,
)

}

fn persist_link(
    mutation: &mut Mutation,
    repo_link_repo_id: RepoId,
    repo_link: &mut RepoLink,
    parent_topics: &Vec<ParentTopicRow>,
) -> Result<()> {
    let mut topics = BTreeSet::new();

    for parent in parent_topics {
        let parent_repo_id = RepoId::try_from(&parent.repository_id).unwrap();
        if repo_link_repo_id != parent_repo_id {
            continue;
        }

        let id = sha256_id(&parent.id);
        topics.insert(activity::TopicInfo::from((
            Locale::EN,
            parent.name.to_owned(),
            id,
        )));
    }

    let change = activity::Change::ImportLink(activity::ImportLink {
        actor_id: "461c87c8-fb8f-11e8-9cbc-afde6c54d881".to_owned(),
        date: chrono::Utc::now(),
        id: activity::Change::new_id(),
        imported_link: activity::LinkInfo::from(&*repo_link),
        parent_topics: activity::TopicInfoList::from(topics),
    });

    mutation.save_link(repo_link_repo_id, repo_link).unwrap();
    mutation.add_change(repo_link_repo_id, &change).unwrap();

    Ok(())
}

fn persist_links(
    mutation: &mut Mutation,