refactor(tvix): move castore into tvix-castore crate r/6629

This splits the pure content-addressed layers from tvix-store into a
`castore` crate, and only leaves PathInfo related things, as well as the
CLI entrypoint in the tvix-store crate.

Notable changes:
 - `fixtures` and `utils` had to be moved out of the `test` cfg, so they
   can be imported from tvix-store.
 - Some ad-hoc fixtures in the test were moved to proper fixtures in the
   same step.
 - The protos are now created by a (more static) recipe in the protos/
   directory.

The (now two) golang targets are commented out, as it's not possible to
update them properly in the same CL. This will be done by a followup CL
once this is merged (and whitby deployed)

Bug: https://b.tvl.fyi/issues/301

Change-Id: I8d675d4bf1fb697eb7d479747c1b1e3635718107
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9370
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>

5 files changed, 20 insertions, 113 deletions

diff --git a/tvix/store/src/tests/import.rs b/tvix/castore/src/tests/import.rs
index 3f7f7dff9d..77ed6d21c0 100644
--- a/tvix/store/src/tests/import.rs
+++ b/tvix/castore/src/tests/import.rs
@@ -1,8 +1,7 @@
-use super::utils::{gen_blob_service, gen_directory_service};
+use crate::fixtures::*;
 use crate::import::ingest_path;
 use crate::proto;
-use crate::tests::fixtures::DIRECTORY_COMPLICATED;
-use crate::tests::fixtures::*;
+use crate::utils::{gen_blob_service, gen_directory_service};
 use tempfile::TempDir;
 
 #[cfg(target_family = "unix")]
@@ -29,7 +28,7 @@ async fn symlink() {
     .expect("must succeed");
 
     assert_eq!(
-        crate::proto::node::Node::Symlink(proto::SymlinkNode {
+        proto::node::Node::Symlink(proto::SymlinkNode {
             name: "doesntmatter".into(),
             target: "/nix/store/somewhereelse".into(),
         }),
@@ -54,7 +53,7 @@ async fn single_file() {
     .expect("must succeed");
 
     assert_eq!(
-        crate::proto::node::Node::File(proto::FileNode {
+        proto::node::Node::File(proto::FileNode {
             name: "root".into(),
             digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
             size: HELLOWORLD_BLOB_CONTENTS.len() as u32,
@@ -94,7 +93,7 @@ async fn complicated() {
 
     // ensure root_node matched expectations
     assert_eq!(
-        crate::proto::node::Node::Directory(proto::DirectoryNode {
+        proto::node::Node::Directory(proto::DirectoryNode {
             name: tmpdir
                 .path()
                 .file_name()
diff --git a/tvix/store/src/tests/fixtures.rs b/tvix/store/src/tests/fixtures.rs
index c362744a34..4d820af157 100644
--- a/tvix/store/src/tests/fixtures.rs
+++ b/tvix/store/src/tests/fixtures.rs
@@ -1,90 +1,9 @@
-use crate::{
-    proto::{self, Directory, DirectoryNode, FileNode, SymlinkNode},
-    B3Digest,
-};
 use lazy_static::lazy_static;
+pub use tvix_castore::fixtures::*;
 
-pub const HELLOWORLD_BLOB_CONTENTS: &[u8] = b"Hello World!";
-pub const EMPTY_BLOB_CONTENTS: &[u8] = b"";
+pub const DUMMY_NAME: &str = "00000000000000000000000000000000-dummy";
 
 lazy_static! {
-    pub static ref DUMMY_DIGEST: B3Digest = {
-        let u: &[u8; 32] = &[
-            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-            0x00, 0x00,
-        ];
-        u.into()
-    };
-    pub static ref DUMMY_DATA_1: bytes::Bytes = vec![0x01, 0x02, 0x03].into();
-    pub static ref DUMMY_DATA_2: bytes::Bytes = vec![0x04, 0x05].into();
-
-    pub static ref HELLOWORLD_BLOB_DIGEST: B3Digest =
-        blake3::hash(HELLOWORLD_BLOB_CONTENTS).as_bytes().into();
-    pub static ref EMPTY_BLOB_DIGEST: B3Digest =
-        blake3::hash(EMPTY_BLOB_CONTENTS).as_bytes().into();
-
-    // 2 bytes
-    pub static ref BLOB_A: bytes::Bytes = vec![0x00, 0x01].into();
-    pub static ref BLOB_A_DIGEST: B3Digest = blake3::hash(&BLOB_A).as_bytes().into();
-
-    // 1MB
-    pub static ref BLOB_B: bytes::Bytes = (0..255).collect::<Vec<u8>>().repeat(4 * 1024).into();
-    pub static ref BLOB_B_DIGEST: B3Digest = blake3::hash(&BLOB_B).as_bytes().into();
-
-    // Directories
-    pub static ref DIRECTORY_WITH_KEEP: proto::Directory = proto::Directory {
-        directories: vec![],
-        files: vec![FileNode {
-            name: b".keep".to_vec().into(),
-            digest: EMPTY_BLOB_DIGEST.clone().into(),
-            size: 0,
-            executable: false,
-        }],
-        symlinks: vec![],
-    };
-    pub static ref DIRECTORY_COMPLICATED: proto::Directory = proto::Directory {
-        directories: vec![DirectoryNode {
-            name: b"keep".to_vec().into(),
-            digest: DIRECTORY_WITH_KEEP.digest().into(),
-            size: DIRECTORY_WITH_KEEP.size(),
-        }],
-        files: vec![FileNode {
-            name: b".keep".to_vec().into(),
-            digest: EMPTY_BLOB_DIGEST.clone().into(),
-            size: 0,
-            executable: false,
-        }],
-        symlinks: vec![SymlinkNode {
-            name: b"aa".to_vec().into(),
-            target: b"/nix/store/somewhereelse".to_vec().into(),
-        }],
-    };
-    pub static ref DIRECTORY_A: Directory = Directory::default();
-    pub static ref DIRECTORY_B: Directory = Directory {
-        directories: vec![DirectoryNode {
-            name: b"a".to_vec().into(),
-            digest: DIRECTORY_A.digest().into(),
-            size: DIRECTORY_A.size(),
-        }],
-        ..Default::default()
-    };
-    pub static ref DIRECTORY_C: Directory = Directory {
-        directories: vec![
-            DirectoryNode {
-                name: b"a".to_vec().into(),
-                digest: DIRECTORY_A.digest().into(),
-                size: DIRECTORY_A.size(),
-            },
-            DirectoryNode {
-                name: b"a'".to_vec().into(),
-                digest: DIRECTORY_A.digest().into(),
-                size: DIRECTORY_A.size(),
-            }
-        ],
-        ..Default::default()
-    };
-
     // output hash
     pub static ref DUMMY_OUTPUT_HASH: bytes::Bytes = vec![
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
diff --git a/tvix/store/src/tests/mod.rs b/tvix/store/src/tests/mod.rs
index 8ceea01e31..daea048ded 100644
--- a/tvix/store/src/tests/mod.rs
+++ b/tvix/store/src/tests/mod.rs
@@ -1,4 +1,3 @@
 pub mod fixtures;
-mod import;
 mod nar_renderer;
 pub mod utils;
diff --git a/tvix/store/src/tests/nar_renderer.rs b/tvix/store/src/tests/nar_renderer.rs
index e0163dc7bd..485d7d115f 100644
--- a/tvix/store/src/tests/nar_renderer.rs
+++ b/tvix/store/src/tests/nar_renderer.rs
@@ -1,12 +1,12 @@
 use crate::nar::calculate_size_and_sha256;
 use crate::nar::write_nar;
-use crate::proto::DirectoryNode;
-use crate::proto::FileNode;
-use crate::proto::SymlinkNode;
 use crate::tests::fixtures::*;
 use crate::tests::utils::*;
 use sha2::{Digest, Sha256};
 use std::io;
+use tvix_castore::proto::DirectoryNode;
+use tvix_castore::proto::FileNode;
+use tvix_castore::proto::{self as castorepb, SymlinkNode};
 
 #[tokio::test]
 async fn single_symlink() {
@@ -14,7 +14,7 @@ async fn single_symlink() {
 
     let buf = write_nar(
         buf,
-        &crate::proto::node::Node::Symlink(SymlinkNode {
+        &castorepb::node::Node::Symlink(SymlinkNode {
             name: "doesntmatter".into(),
             target: "/nix/store/somewhereelse".into(),
         }),
@@ -35,7 +35,7 @@ async fn single_file_missing_blob() {
 
     let e = write_nar(
         buf,
-        &crate::proto::node::Node::File(FileNode {
+        &castorepb::node::Node::File(FileNode {
             name: "doesntmatter".into(),
             digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
             size: HELLOWORLD_BLOB_CONTENTS.len() as u32,
@@ -82,7 +82,7 @@ async fn single_file_wrong_blob_size() {
 
         let e = write_nar(
             buf,
-            &crate::proto::node::Node::File(FileNode {
+            &castorepb::node::Node::File(FileNode {
                 name: "doesntmatter".into(),
                 digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
                 size: 42, // <- note the wrong size here!
@@ -109,7 +109,7 @@ async fn single_file_wrong_blob_size() {
 
         let e = write_nar(
             buf,
-            &crate::proto::node::Node::File(FileNode {
+            &castorepb::node::Node::File(FileNode {
                 name: "doesntmatter".into(),
                 digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
                 size: 2, // <- note the wrong size here!
@@ -152,7 +152,7 @@ async fn single_file() {
 
     let buf = write_nar(
         buf,
-        &crate::proto::node::Node::File(FileNode {
+        &castorepb::node::Node::File(FileNode {
             name: "doesntmatter".into(),
             digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
             size: HELLOWORLD_BLOB_CONTENTS.len() as u32,
@@ -199,7 +199,7 @@ async fn test_complicated() {
 
     let buf = write_nar(
         buf,
-        &crate::proto::node::Node::Directory(DirectoryNode {
+        &castorepb::node::Node::Directory(DirectoryNode {
             name: "doesntmatter".into(),
             digest: DIRECTORY_COMPLICATED.digest().into(),
             size: DIRECTORY_COMPLICATED.size(),
@@ -216,7 +216,7 @@ async fn test_complicated() {
     let bs = blob_service.clone();
     let ds = directory_service.clone();
     let (nar_size, nar_digest) = calculate_size_and_sha256(
-        &crate::proto::node::Node::Directory(DirectoryNode {
+        &castorepb::node::Node::Directory(DirectoryNode {
             name: "doesntmatter".into(),
             digest: DIRECTORY_COMPLICATED.digest().into(),
             size: DIRECTORY_COMPLICATED.size(),
diff --git a/tvix/store/src/tests/utils.rs b/tvix/store/src/tests/utils.rs
index 9ccd3dcc65..961be6e7ac 100644
--- a/tvix/store/src/tests/utils.rs
+++ b/tvix/store/src/tests/utils.rs
@@ -1,18 +1,8 @@
+use crate::pathinfoservice::{MemoryPathInfoService, PathInfoService};
 use std::sync::Arc;
+use tvix_castore::{blobservice::BlobService, directoryservice::DirectoryService};
 
-use crate::{
-    blobservice::{BlobService, MemoryBlobService},
-    directoryservice::{DirectoryService, MemoryDirectoryService},
-    pathinfoservice::{MemoryPathInfoService, PathInfoService},
-};
-
-pub fn gen_blob_service() -> Arc<dyn BlobService> {
-    Arc::new(MemoryBlobService::default())
-}
-
-pub fn gen_directory_service() -> Arc<dyn DirectoryService> {
-    Arc::new(MemoryDirectoryService::default())
-}
+pub use tvix_castore::utils::*;
 
 pub fn gen_pathinfo_service(
     blob_service: Arc<dyn BlobService>,