Struct MemoryBlobStore 

pub struct MemoryBlobStore<H: HashProtocol> { /* private fields */ }

Re-export of the in-memory blob store. A mapping from Handles to Blobs.

Implementations

impl<H: HashProtocol> MemoryBlobStore<H>

pub fn new() -> MemoryBlobStore<H>

Creates a new MemoryBlobStore with no blobs.

The store keeps all data in memory and is primarily intended for tests or other transient repositories such as workspaces.

pub fn insert<S>(&mut self, blob: Blob<S>) -> Value<Handle<H, S>>

where S: BlobSchema,

Inserts blob into the store and returns the newly computed handle.

The handle is derived from hashing the blob’s bytes using the hash protocol associated with this store.

pub fn keep<I>(&mut self, handles: I)

where I: IntoIterator<Item = Value<Handle<H, UnknownBlob>>>,

Drops any blobs that are not referenced by one of the provided tribles.

This is a simple mark-and-sweep style GC used to prune unreferenced blobs from long lived stores.

Trait Implementations

impl<H: HashProtocol> BlobStore<H> for MemoryBlobStore<H>

type Reader = MemoryBlobStoreReader<H>

A clonable reader handle for concurrent blob lookups.

type ReaderError = Infallible

Error type for creating a reader.

fn reader(&mut self) -> Result<Self::Reader, Self::ReaderError>

Creates a shareable reader snapshot of the current store state.

impl<H: HashProtocol> BlobStoreKeep<H> for MemoryBlobStore<H>

fn keep<I>(&mut self, handles: I)

where I: IntoIterator<Item = Value<Handle<H, UnknownBlob>>>,

Retain only the blobs identified by handles.

impl<H> BlobStorePut<H> for MemoryBlobStore<H>

where H: HashProtocol,

type PutError = Infallible

Error type for put operations.

fn put<S, T>(&mut self, item: T) -> Result<Value<Handle<H, S>>, Self::PutError>

where S: BlobSchema, T: ToBlob<S>,

Serialises item as a blob, stores it, and returns its handle.

impl<H> Debug for MemoryBlobStore<H>

where H: HashProtocol,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<H: HashProtocol> Default for MemoryBlobStore<H>

fn default() -> Self

Returns the “default value” for a type.

impl<H> FromIterator<(Value<Handle<H, UnknownBlob>>, Blob<UnknownBlob>)> for MemoryBlobStore<H>

where H: HashProtocol,

fn from_iter<I: IntoIterator<Item = (Value<Handle<H, UnknownBlob>>, Blob<UnknownBlob>)>>( iter: I, ) -> Self

Creates a value from an iterator.