32f41458c0
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>
62 lines
2.1 KiB
Rust
62 lines
2.1 KiB
Rust
use std::io;
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use tonic::async_trait;
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use crate::{B3Digest, Error};
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mod from_addr;
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mod grpc;
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mod memory;
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mod naive_seeker;
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mod sled;
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#[cfg(test)]
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mod tests;
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pub use self::from_addr::from_addr;
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pub use self::grpc::GRPCBlobService;
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pub use self::memory::MemoryBlobService;
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pub use self::sled::SledBlobService;
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/// The base trait all BlobService services need to implement.
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/// It provides functions to check whether a given blob exists,
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/// a way to get a [io::Read] to a blob, and a method to initiate writing a new
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/// Blob, which will return something implmenting io::Write, and providing a
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/// close funtion, to finalize a blob and get its digest.
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#[async_trait]
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pub trait BlobService: Send + Sync {
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/// Create a new instance by passing in a connection URL.
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/// TODO: check if we want to make this async, instead of lazily connecting
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fn from_url(url: &url::Url) -> Result<Self, Error>
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where
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Self: Sized;
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/// Check if the service has the blob, by its content hash.
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async fn has(&self, digest: &B3Digest) -> Result<bool, Error>;
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/// Request a blob from the store, by its content hash.
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async fn open_read(&self, digest: &B3Digest) -> Result<Option<Box<dyn BlobReader>>, Error>;
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/// Insert a new blob into the store. Returns a [BlobWriter], which
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/// implements [io::Write] and a [BlobWriter::close].
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async fn open_write(&self) -> Box<dyn BlobWriter>;
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}
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/// A [tokio::io::AsyncWrite] that you need to close() afterwards, and get back
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/// the digest of the written blob.
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#[async_trait]
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pub trait BlobWriter: tokio::io::AsyncWrite + Send + Sync + Unpin + 'static {
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/// Signal there's no more data to be written, and return the digest of the
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/// contents written.
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///
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/// Closing a already-closed BlobWriter is a no-op.
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async fn close(&mut self) -> Result<B3Digest, Error>;
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}
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/// A [tokio::io::AsyncRead] that also allows seeking.
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pub trait BlobReader:
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tokio::io::AsyncRead + tokio::io::AsyncSeek + tokio::io::AsyncBufRead + Send + Unpin + 'static
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{
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}
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/// A [`io::Cursor<Vec<u8>>`] can be used as a BlobReader.
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impl BlobReader for io::Cursor<Vec<u8>> {}
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