refactor(tvix/store): use Arc instead of Box

This allows us to blob services without closing them before putting them
in a box.
We currently need to use Arc<_>, not Rc<_>, because the GRPC wrappers
require Sync.

Change-Id: I679c5f06b62304f5b0456cfefe25a0a881de7c84
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8738
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>

tvix/store/src/tests/import.rs

@@ -18,8 +18,8 @@ fn symlink() {
     .unwrap();
 
     let root_node = ingest_path(
-        &mut gen_blob_service(),
-        &mut gen_directory_service(),
+        gen_blob_service(),
+        gen_directory_service(),
         tmpdir.path().join("doesntmatter"),
     )
     .expect("must succeed");
@@ -39,11 +39,11 @@ fn single_file() {
 
     std::fs::write(tmpdir.path().join("root"), HELLOWORLD_BLOB_CONTENTS).unwrap();
 
-    let mut blob_service = gen_blob_service();
+    let blob_service = gen_blob_service();
 
     let root_node = ingest_path(
-        &mut blob_service,
-        &mut gen_directory_service(),
+        blob_service.clone(),
+        gen_directory_service(),
         tmpdir.path().join("root"),
     )
     .expect("must succeed");
@@ -75,11 +75,15 @@ fn complicated() {
     // File ``keep/.keep`
     std::fs::write(tmpdir.path().join("keep").join(".keep"), vec![]).unwrap();
 
-    let mut blob_service = gen_blob_service();
-    let mut directory_service = gen_directory_service();
+    let blob_service = gen_blob_service();
+    let directory_service = gen_directory_service();
 
-    let root_node = ingest_path(&mut blob_service, &mut directory_service, tmpdir.path())
-        .expect("must succeed");
+    let root_node = ingest_path(
+        blob_service.clone(),
+        directory_service.clone(),
+        tmpdir.path(),
+    )
+    .expect("must succeed");
 
     // ensure root_node matched expectations
     assert_eq!(

tvix/store/src/tests/nar_renderer.rs

@@ -19,8 +19,8 @@ fn single_symlink() {
             target: "/nix/store/somewhereelse".to_string(),
         }),
         // don't put anything in the stores, as we don't actually do any requests.
-        &gen_blob_service(),
-        &gen_directory_service(),
+        gen_blob_service(),
+        gen_directory_service(),
     )
     .expect("must succeed");
 
@@ -41,8 +41,8 @@ fn single_file_missing_blob() {
             executable: false,
         }),
         // the blobservice is empty intentionally, to provoke the error.
-        &gen_blob_service(),
-        &gen_directory_service(),
+        gen_blob_service(),
+        gen_directory_service(),
     )
     .expect_err("must fail");
 
@@ -81,8 +81,8 @@ fn single_file_wrong_blob_size() {
                 size: 42, // <- note the wrong size here!
                 executable: false,
             }),
-            &blob_service,
-            &gen_directory_service(),
+            blob_service.clone(),
+            gen_directory_service(),
         )
         .expect_err("must fail");
 
@@ -106,8 +106,8 @@ fn single_file_wrong_blob_size() {
                 size: 2, // <- note the wrong size here!
                 executable: false,
             }),
-            &blob_service,
-            &gen_directory_service(),
+            blob_service,
+            gen_directory_service(),
         )
         .expect_err("must fail");
 
@@ -143,8 +143,8 @@ fn single_file() {
             size: HELLOWORLD_BLOB_CONTENTS.len() as u32,
             executable: false,
         }),
-        &blob_service,
-        &gen_directory_service(),
+        blob_service,
+        gen_directory_service(),
     )
     .expect("must succeed");
 
@@ -180,8 +180,8 @@ fn test_complicated() {
             digest: DIRECTORY_COMPLICATED.digest().to_vec(),
             size: DIRECTORY_COMPLICATED.size(),
         }),
-        &blob_service,
-        &directory_service,
+        blob_service.clone(),
+        directory_service.clone(),
     )
     .expect("must succeed");
 
@@ -194,8 +194,8 @@ fn test_complicated() {
             digest: DIRECTORY_COMPLICATED.digest().to_vec(),
             size: DIRECTORY_COMPLICATED.size(),
         }),
-        &blob_service,
-        &directory_service,
+        blob_service,
+        directory_service,
     )
     .expect("must succeed");
 

tvix/store/src/tests/utils.rs

@@ -1,20 +1,22 @@
+use std::sync::Arc;
+
 use crate::{
     blobservice::{BlobService, MemoryBlobService},
     directoryservice::{DirectoryService, MemoryDirectoryService},
     pathinfoservice::{MemoryPathInfoService, PathInfoService},
 };
 
-pub fn gen_blob_service() -> Box<dyn BlobService> {
-    Box::new(MemoryBlobService::default())
+pub fn gen_blob_service() -> Arc<dyn BlobService> {
+    Arc::new(MemoryBlobService::default())
 }
 
-pub fn gen_directory_service() -> Box<dyn DirectoryService> {
-    Box::new(MemoryDirectoryService::default())
+pub fn gen_directory_service() -> Arc<dyn DirectoryService> {
+    Arc::new(MemoryDirectoryService::default())
 }
 
 pub fn gen_pathinfo_service(
-    blob_service: Box<dyn BlobService>,
-    directory_service: Box<dyn DirectoryService>,
+    blob_service: Arc<dyn BlobService>,
+    directory_service: Arc<dyn DirectoryService>,
 ) -> impl PathInfoService {
     MemoryPathInfoService::new(blob_service, directory_service)
 }