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refactor(tvix/castore): use Directory struct separate from proto one

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This uses our own data type to deal with Directories in the castore model.

It makes some undesired states unrepresentable, removing the need for conversions and checking in various places:

 - In the protobuf, blake3 digests could have a wrong length, as proto doesn't know fixed-size fields. We now use `B3Digest`, which makes cloning cheaper, and removes the need to do size-checking everywhere.
 - In the protobuf, we had three different lists for `files`, `symlinks` and `directories`. This was mostly a protobuf size optimization, but made interacting with them a bit awkward. This has now been replaced with a list of enums, and convenience iterators to get various nodes, and add new ones.

Change-Id: I7b92691bb06d77ff3f58a5ccea94a22c16f84f04
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12057
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This commit is contained in:
Yureka 2024-07-29 14:34:50 +02:00 • committed by yuka
parent 5d3f3158d6
commit 3ca0b53840
53 changed files with 1429 additions and 1377 deletions
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98
tvix/store/src/tests/nar_renderer.rs
View file

@ -9,8 +9,9 @@ use std::io;
use std::sync::Arc;
use tokio::io::sink;
use tvix_castore::blobservice::BlobService;
use tvix_castore::directoryservice::DirectoryService;
use tvix_castore::proto as castorepb;
use tvix_castore::directoryservice::{
DirectoryNode, DirectoryService, FileNode, Node, SymlinkNode,
};
#[rstest]
#[tokio::test]
@ -22,10 +23,9 @@ async fn single_symlink(
write_nar(
&mut buf,
&castorepb::node::Node::Symlink(castorepb::SymlinkNode {
name: "doesntmatter".into(),
target: "/nix/store/somewhereelse".into(),
}),
&Node::Symlink(
SymlinkNode::new("doesntmatter".into(), "/nix/store/somewhereelse".into()).unwrap(),
),
// don't put anything in the stores, as we don't actually do any requests.
blob_service,
directory_service,
@ -45,12 +45,15 @@ async fn single_file_missing_blob(
) {
let e = write_nar(
sink(),
&castorepb::node::Node::File(castorepb::FileNode {
name: "doesntmatter".into(),
digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
size: HELLOWORLD_BLOB_CONTENTS.len() as u64,
executable: false,
}),
&Node::File(
FileNode::new(
"doesntmatter".into(),
HELLOWORLD_BLOB_DIGEST.clone(),
HELLOWORLD_BLOB_CONTENTS.len() as u64,
false,
)
.unwrap(),
),
// the blobservice is empty intentionally, to provoke the error.
blob_service,
directory_service,
@ -90,12 +93,15 @@ async fn single_file_wrong_blob_size(
// Test with a root FileNode of a too big size
let e = write_nar(
sink(),
&castorepb::node::Node::File(castorepb::FileNode {
name: "doesntmatter".into(),
digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
size: 42, // <- note the wrong size here!
executable: false,
}),
&Node::File(
FileNode::new(
"doesntmatter".into(),
HELLOWORLD_BLOB_DIGEST.clone(),
42, // <- note the wrong size here!
false,
)
.unwrap(),
),
blob_service.clone(),
directory_service.clone(),
)
@ -112,12 +118,15 @@ async fn single_file_wrong_blob_size(
// Test with a root FileNode of a too small size
let e = write_nar(
sink(),
&castorepb::node::Node::File(castorepb::FileNode {
name: "doesntmatter".into(),
digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
size: 2, // <- note the wrong size here!
executable: false,
}),
&Node::File(
FileNode::new(
"doesntmatter".into(),
HELLOWORLD_BLOB_DIGEST.clone(),
2, // <- note the wrong size here!
false,
)
.unwrap(),
),
blob_service,
directory_service,
)
@ -153,12 +162,15 @@ async fn single_file(
write_nar(
&mut buf,
&castorepb::node::Node::File(castorepb::FileNode {
name: "doesntmatter".into(),
digest: HELLOWORLD_BLOB_DIGEST.clone().into(),
size: HELLOWORLD_BLOB_CONTENTS.len() as u64,
executable: false,
}),
&Node::File(
FileNode::new(
"doesntmatter".into(),
HELLOWORLD_BLOB_DIGEST.clone(),
HELLOWORLD_BLOB_CONTENTS.len() as u64,
false,
)
.unwrap(),
),
blob_service,
directory_service,
)
@ -196,11 +208,14 @@ async fn test_complicated(
write_nar(
&mut buf,
&castorepb::node::Node::Directory(castorepb::DirectoryNode {
name: "doesntmatter".into(),
digest: DIRECTORY_COMPLICATED.digest().into(),
size: DIRECTORY_COMPLICATED.size(),
}),
&Node::Directory(
DirectoryNode::new(
"doesntmatter".into(),
DIRECTORY_COMPLICATED.digest(),
DIRECTORY_COMPLICATED.size(),
)
.unwrap(),
),
blob_service.clone(),
directory_service.clone(),
)
@ -211,11 +226,14 @@ async fn test_complicated(
// ensure calculate_nar does return the correct sha256 digest and sum.
let (nar_size, nar_digest) = calculate_size_and_sha256(
&castorepb::node::Node::Directory(castorepb::DirectoryNode {
name: "doesntmatter".into(),
digest: DIRECTORY_COMPLICATED.digest().into(),
size: DIRECTORY_COMPLICATED.size(),
}),
&Node::Directory(
DirectoryNode::new(
"doesntmatter".into(),
DIRECTORY_COMPLICATED.digest(),
DIRECTORY_COMPLICATED.size(),
)
.unwrap(),
),
blob_service,
directory_service,
)