Struct tvix_castore::blobservice::CombinedBlobService
source · pub struct CombinedBlobService<BL, BR> {
instance_name: String,
near: BL,
far: BR,
}
Expand description
Combinator for a BlobService, using a “near” and “far” blobservice. Requests are tried in (and returned from) the near store first, only if things are not present there, the far BlobService is queried. In case the near blobservice doesn’t have the blob, we ask the remote blobservice for chunks, and try to read each of these chunks from the near blobservice again, before falling back to the far one. The far BlobService is never written to.
Fields§
§instance_name: String
§near: BL
§far: BR
Trait Implementations§
source§impl<BL, BR> BlobService for CombinedBlobService<BL, BR>where
BL: AsRef<dyn BlobService> + Clone + Send + Sync + 'static,
BR: AsRef<dyn BlobService> + Clone + Send + Sync + 'static,
impl<BL, BR> BlobService for CombinedBlobService<BL, BR>where
BL: AsRef<dyn BlobService> + Clone + Send + Sync + 'static,
BR: AsRef<dyn BlobService> + Clone + Send + Sync + 'static,
source§fn has<'life0, 'life1, 'async_trait>(
&'life0 self,
digest: &'life1 B3Digest,
) -> Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
fn has<'life0, 'life1, 'async_trait>(
&'life0 self,
digest: &'life1 B3Digest,
) -> Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
Check if the service has the blob, by its content hash.
On implementations returning chunks, this must also work for chunks.
source§fn open_read<'life0, 'life1, 'async_trait>(
&'life0 self,
digest: &'life1 B3Digest,
) -> Pin<Box<dyn Future<Output = Result<Option<Box<dyn BlobReader>>>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
fn open_read<'life0, 'life1, 'async_trait>(
&'life0 self,
digest: &'life1 B3Digest,
) -> Pin<Box<dyn Future<Output = Result<Option<Box<dyn BlobReader>>>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
Request a blob from the store, by its content hash.
On implementations returning chunks, this must also work for chunks.
source§fn open_write<'life0, 'async_trait>(
&'life0 self,
) -> Pin<Box<dyn Future<Output = Box<dyn BlobWriter>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
fn open_write<'life0, 'async_trait>(
&'life0 self,
) -> Pin<Box<dyn Future<Output = Box<dyn BlobWriter>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
Insert a new blob into the store. Returns a BlobWriter, which
implements tokio::io::AsyncWrite and a BlobWriter::close to finalize
the blob and get its digest.
source§fn chunks<'life0, 'life1, 'async_trait>(
&'life0 self,
digest: &'life1 B3Digest,
) -> Pin<Box<dyn Future<Output = Result<Option<Vec<ChunkMeta>>>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
fn chunks<'life0, 'life1, 'async_trait>(
&'life0 self,
digest: &'life1 B3Digest,
) -> Pin<Box<dyn Future<Output = Result<Option<Vec<ChunkMeta>>>> + Send + 'async_trait>>where
Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
Return a list of chunks for a given blob.
There’s a distinction between returning Ok(None) and Ok(Some(vec![])).
The former return value is sent in case the blob is not present at all,
while the second one is sent in case there’s no more granular chunks (or
the backend does not support chunking).
A default implementation checking for existence and then returning it
does not have more granular chunks available is provided.
Auto Trait Implementations§
impl<BL, BR> Freeze for CombinedBlobService<BL, BR>
impl<BL, BR> RefUnwindSafe for CombinedBlobService<BL, BR>where
BL: RefUnwindSafe,
BR: RefUnwindSafe,
impl<BL, BR> Send for CombinedBlobService<BL, BR>
impl<BL, BR> Sync for CombinedBlobService<BL, BR>
impl<BL, BR> Unpin for CombinedBlobService<BL, BR>
impl<BL, BR> UnwindSafe for CombinedBlobService<BL, BR>where
BL: UnwindSafe,
BR: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T> FutureExt for T
impl<T> FutureExt for T
source§fn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
source§fn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§impl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
source§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T
in a tonic::Request