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>

1 files changed, 0 insertions, 76 deletions

diff --git a/tvix/store/src/directoryservice/mod.rs b/tvix/store/src/directoryservice/mod.rs
deleted file mode 100644
index 3b26f4baf79b..000000000000
--- a/tvix/store/src/directoryservice/mod.rs
+++ /dev/null
@@ -1,76 +0,0 @@
-use crate::{proto, B3Digest, Error};
-use futures::Stream;
-use std::pin::Pin;
-use tonic::async_trait;
-
-mod from_addr;
-mod grpc;
-mod memory;
-mod sled;
-mod traverse;
-mod utils;
-
-pub use self::from_addr::from_addr;
-pub use self::grpc::GRPCDirectoryService;
-pub use self::memory::MemoryDirectoryService;
-pub use self::sled::SledDirectoryService;
-pub use self::traverse::descend_to;
-
-/// The base trait all Directory services need to implement.
-/// This is a simple get and put of [crate::proto::Directory], returning their
-/// digest.
-#[async_trait]
-pub trait DirectoryService: Send + Sync {
-    /// Create a new instance by passing in a connection URL.
-    /// TODO: check if we want to make this async, instead of lazily connecting
-    fn from_url(url: &url::Url) -> Result<Self, Error>
-    where
-        Self: Sized;
-
-    /// Get looks up a single Directory message by its digest.
-    /// In case the directory is not found, Ok(None) is returned.
-    async fn get(&self, digest: &B3Digest) -> Result<Option<proto::Directory>, Error>;
-    /// Get uploads a single Directory message, and returns the calculated
-    /// digest, or an error.
-    async fn put(&self, directory: proto::Directory) -> Result<B3Digest, Error>;
-
-    /// Looks up a closure of [proto::Directory].
-    /// Ideally this would be a `impl Stream<Item = Result<proto::Directory, Error>>`,
-    /// and we'd be able to add a default implementation for it here, but
-    /// we can't have that yet.
-    ///
-    /// This returns a pinned, boxed stream. The pinning allows for it to be polled easily,
-    /// and the box allows different underlying stream implementations to be returned since
-    /// Rust doesn't support this as a generic in traits yet. This is the same thing that
-    /// [async_trait] generates, but for streams instead of futures.
-    fn get_recursive(
-        &self,
-        root_directory_digest: &B3Digest,
-    ) -> Pin<Box<dyn Stream<Item = Result<proto::Directory, Error>> + Send>>;
-
-    /// Allows persisting a closure of [proto::Directory], which is a graph of
-    /// connected Directory messages.
-    fn put_multiple_start(&self) -> Box<dyn DirectoryPutter>;
-}
-
-/// Provides a handle to put a closure of connected [proto::Directory] elements.
-///
-/// The consumer can periodically call [DirectoryPutter::put], starting from the
-/// leaves. Once the root is reached, [DirectoryPutter::close] can be called to
-/// retrieve the root digest (or an error).
-#[async_trait]
-pub trait DirectoryPutter: Send {
-    /// Put a individual [proto::Directory] into the store.
-    /// Error semantics and behaviour is up to the specific implementation of
-    /// this trait.
-    /// Due to bursting, the returned error might refer to an object previously
-    /// sent via `put`.
-    async fn put(&mut self, directory: proto::Directory) -> Result<(), Error>;
-
-    /// Close the stream, and wait for any errors.
-    async fn close(&mut self) -> Result<B3Digest, Error>;
-
-    /// Return whether the stream is closed or not.
-    /// Used from some [DirectoryService] implementations only.
-    fn is_closed(&self) -> bool;
-}