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git: remove code for upgrading from Git notes

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Martin von Zweigbergk 2022-03-31 13:11:23 -07:00 committed by Martin von Zweigbergk
parent 600aad62f4
commit 16994308fa
1 changed files with 0 additions and 31 deletions
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31
lib/src/git_backend.rs
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@ -34,8 +34,6 @@ use crate::stacked_table::{TableSegment, TableStore};
const HASH_LENGTH: usize = 20;
/// Ref namespace used only for preventing GC.
const NO_GC_REF_NAMESPACE: &str = "refs/jj/keep/";
/// Notes ref for commit metadata
const COMMITS_NOTES_REF: &str = "refs/notes/jj/commits";
const CONFLICT_SUFFIX: &str = ".jjconflict";
impl From<git2::Error> for BackendError {
@ -93,35 +91,6 @@ impl GitBackend {
let git_repo_path_str = String::from_utf8(buf).unwrap();
let git_repo_path = store_path.join(git_repo_path_str).canonicalize().unwrap();
let repo = git2::Repository::open(git_repo_path).unwrap();
// TODO: Delete this migration code in early 2022 or so
if let Ok(notes) = repo.notes(Some(COMMITS_NOTES_REF)) {
let extra_path = store_path.join("extra");
let extra_metadata_store = if std::fs::create_dir(&extra_path).is_ok() {
// It's fine if it already exists. That probably means that we have already done
// a migration but the user ran an old version in the repo
// afterwards, which resulted in more notes to migrate.
TableStore::init(extra_path, HASH_LENGTH)
} else {
TableStore::load(extra_path, HASH_LENGTH)
};
let mut mut_table = extra_metadata_store.get_head().unwrap().start_mutation();
println!(
"Found Git notes ref {}, migrating it to a new format...",
COMMITS_NOTES_REF
);
for note in notes {
let (note_id, commit_id) = note.unwrap();
let note = repo.find_blob(note_id).unwrap();
let note_bytes = hex::decode(note.content()).unwrap();
mut_table.add_entry(commit_id.as_bytes().to_vec(), note_bytes);
}
extra_metadata_store.save_table(mut_table).unwrap();
repo.find_reference(COMMITS_NOTES_REF)
.unwrap()
.delete()
.unwrap();
println!("Migration complete");
}
let extra_metadata_store = TableStore::load(store_path.join("extra"), HASH_LENGTH);
GitBackend::new(repo, extra_metadata_store)
}