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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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34
tvix/castore/src/directoryservice/memory.rs
View file

@ -1,4 +1,4 @@
use crate::{proto, B3Digest, Error};
use crate::{B3Digest, Error};
use futures::stream::BoxStream;
use std::collections::HashMap;
use std::sync::Arc;
@ -7,8 +7,9 @@ use tonic::async_trait;
use tracing::{instrument, warn};
use super::utils::traverse_directory;
use super::{DirectoryPutter, DirectoryService, SimplePutter};
use super::{Directory, DirectoryPutter, DirectoryService, SimplePutter};
use crate::composition::{CompositionContext, ServiceBuilder};
use crate::proto;
#[derive(Clone, Default)]
pub struct MemoryDirectoryService {
@ -18,7 +19,7 @@ pub struct MemoryDirectoryService {
#[async_trait]
impl DirectoryService for MemoryDirectoryService {
#[instrument(skip(self, digest), fields(directory.digest = %digest))]
async fn get(&self, digest: &B3Digest) -> Result<Option<proto::Directory>, Error> {
async fn get(&self, digest: &B3Digest) -> Result<Option<Directory>, Error> {
let db = self.db.read().await;
match db.get(digest) {
@ -37,35 +38,20 @@ impl DirectoryService for MemoryDirectoryService {
)));
}
// Validate the Directory itself is valid.
if let Err(e) = directory.validate() {
warn!("directory failed validation: {}", e.to_string());
return Err(Error::StorageError(format!(
"directory {} failed validation: {}",
actual_digest, e,
)));
}
Ok(Some(directory.clone()))
Ok(Some(directory.clone().try_into().map_err(|e| {
crate::Error::StorageError(format!("corrupted directory: {}", e))
})?))
}
}
}
#[instrument(skip(self, directory), fields(directory.digest = %directory.digest()))]
async fn put(&self, directory: proto::Directory) -> Result<B3Digest, Error> {
async fn put(&self, directory: Directory) -> Result<B3Digest, Error> {
let digest = directory.digest();
// validate the directory itself.
if let Err(e) = directory.validate() {
return Err(Error::InvalidRequest(format!(
"directory {} failed validation: {}",
digest, e,
)));
}
// store it
let mut db = self.db.write().await;
db.insert(digest.clone(), directory);
db.insert(digest.clone(), directory.into());
Ok(digest)
}
@ -74,7 +60,7 @@ impl DirectoryService for MemoryDirectoryService {
fn get_recursive(
&self,
root_directory_digest: &B3Digest,
) -> BoxStream<'static, Result<proto::Directory, Error>> {
) -> BoxStream<'static, Result<Directory, Error>> {
traverse_directory(self.clone(), root_directory_digest)
}