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repo: move creation of OpStore out of View

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We want to support loading the repo at a specific operation without
first loading the head operation (like we currently do). One reason
for that is of course efficiency. A possibly more important reason is
that the head operation may be conflicted, depending on how we decide
to deal with operation-level conflicts. In order to do that, it makes
sense to move the creation of the `OpStore` outside of the
`View`. That also suggests that the `.jj/view/op_store/` directory
should move to `.jj/op_store/`, so this patch also does that. That's
consistent with how `.jj/store/` is outside of `.jj/working_copy/`.
This commit is contained in:
Martin von Zweigbergk 2021-02-26 23:37:42 -08:00
parent e2e9fe8f0d
commit 5a32118af1
2 changed files with 15 additions and 8 deletions
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9
lib/src/repo.rs
View file

@ -26,8 +26,10 @@ use crate::evolution::{EvolutionRef, MutableEvolution, ReadonlyEvolution};
use crate::git_store::GitStore;
use crate::index::{IndexRef, MutableIndex, ReadonlyIndex};
use crate::local_store::LocalStore;
use crate::op_store::OpStore;
use crate::operation::Operation;
use crate::settings::{RepoSettings, UserSettings};
use crate::simple_op_store::SimpleOpStore;
use crate::store;
use crate::store::{Store, StoreError};
use crate::store_wrapper::StoreWrapper;
@ -191,8 +193,12 @@ impl ReadonlyRepo {
is_pruned: false,
};
let checkout_commit = store.write_commit(checkout_commit);
std::fs::create_dir(repo_path.join("op_store")).unwrap();
let op_store: Arc<dyn OpStore> = Arc::new(SimpleOpStore::init(repo_path.join("op_store")));
let view = ReadonlyView::init(
store.clone(),
op_store,
repo_path.join("view"),
checkout_commit.id().clone(),
);
@ -254,7 +260,8 @@ impl ReadonlyRepo {
wc_path.clone(),
repo_path.join("working_copy"),
);
let view = ReadonlyView::load(store.clone(), repo_path.join("view"));
let op_store: Arc<dyn OpStore> = Arc::new(SimpleOpStore::load(repo_path.join("op_store")));
let view = ReadonlyView::load(store.clone(), op_store, repo_path.join("view"));
let repo = ReadonlyRepo {
repo_path,
wc_path,

14
lib/src/view.rs
View file

@ -26,7 +26,6 @@ use crate::lock::FileLock;
use crate::op_store;
use crate::op_store::{OpStore, OpStoreResult, OperationId, OperationMetadata};
use crate::operation::Operation;
use crate::simple_op_store::SimpleOpStore;
use crate::store::{CommitId, Timestamp};
use crate::store_wrapper::StoreWrapper;
@ -361,10 +360,12 @@ fn merge_op_heads(
}
impl ReadonlyView {
pub fn init(store: Arc<StoreWrapper>, path: PathBuf, checkout: CommitId) -> Self {
std::fs::create_dir(path.join("op_store")).unwrap();
let op_store = Arc::new(SimpleOpStore::init(path.join("op_store")));
pub fn init(
store: Arc<StoreWrapper>,
op_store: Arc<dyn OpStore>,
path: PathBuf,
checkout: CommitId,
) -> Self {
let mut root_view = op_store::View::new(checkout.clone());
root_view.head_ids.insert(checkout);
let root_view_id = op_store.write_view(&root_view).unwrap();
@ -389,8 +390,7 @@ impl ReadonlyView {
}
}
pub fn load(store: Arc<StoreWrapper>, path: PathBuf) -> Self {
let op_store: Arc<dyn OpStore> = Arc::new(SimpleOpStore::load(path.join("op_store")));
pub fn load(store: Arc<StoreWrapper>, op_store: Arc<dyn OpStore>, path: PathBuf) -> Self {
let op_heads_dir = path.join("op_heads");
let (op_id, _operation, view) =
get_single_op_head(&store, &op_store, &op_heads_dir).unwrap();