Trait AsyncManifestStore 

pub trait AsyncManifestStore {
    type Error: Error + 'static;

    // Required methods
    async fn get_root(
        &self,
        name: &[u8],
    ) -> Result<Option<RootManifest>, Self::Error>;
    async fn put_root(
        &self,
        name: &[u8],
        manifest: &RootManifest,
    ) -> Result<(), Self::Error>;
    async fn delete_root(&self, name: &[u8]) -> Result<(), Self::Error>;
    async fn compare_and_swap_root(
        &self,
        name: &[u8],
        expected: Option<&RootManifest>,
        new: Option<&RootManifest>,
    ) -> Result<ManifestUpdate, Self::Error>;

    // Provided method
    async fn get_roots_ordered(
        &self,
        names: &[&[u8]],
    ) -> Result<Vec<Option<RootManifest>>, Self::Error> { ... }
}

Async storage for named root manifests.

This mirrors ManifestStore for remote, browser, object-store, and cloud-database backends. The mutable root layer stays separate from immutable node storage so remote implementations can use their native compare-and-swap or transaction mechanism for branch/head updates.

Required Associated Types

type Error: Error + 'static

Error type for manifest operations.

Required Methods

async fn get_root( &self, name: &[u8], ) -> Result<Option<RootManifest>, Self::Error>

Load a named root manifest.

async fn put_root( &self, name: &[u8], manifest: &RootManifest, ) -> Result<(), Self::Error>

Unconditionally insert or replace a named root manifest.

async fn delete_root(&self, name: &[u8]) -> Result<(), Self::Error>

Delete a named root manifest. Deleting a missing name is not an error.

async fn compare_and_swap_root( &self, name: &[u8], expected: Option<&RootManifest>, new: Option<&RootManifest>, ) -> Result<ManifestUpdate, Self::Error>

Atomically update a named root if the current manifest matches expected.

expected == None means the name must be absent. new == None deletes the name when the compare succeeds.

Provided Methods

async fn get_roots_ordered( &self, names: &[&[u8]], ) -> Result<Vec<Option<RootManifest>>, Self::Error>

Load root manifests in caller order. Backends may override this with a native batch read; the default preserves compatibility.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T: AsyncManifestStore> AsyncManifestStore for Arc<T>

type Error = <T as AsyncManifestStore>::Error

async fn get_root( &self, name: &[u8], ) -> Result<Option<RootManifest>, Self::Error>

async fn get_roots_ordered( &self, names: &[&[u8]], ) -> Result<Vec<Option<RootManifest>>, Self::Error>

async fn put_root( &self, name: &[u8], manifest: &RootManifest, ) -> Result<(), Self::Error>

async fn delete_root(&self, name: &[u8]) -> Result<(), Self::Error>

async fn compare_and_swap_root( &self, name: &[u8], expected: Option<&RootManifest>, new: Option<&RootManifest>, ) -> Result<ManifestUpdate, Self::Error>

Implementors

impl<B: RemoteStoreBackend> AsyncManifestStore for RemoteProllyStore<B>

type Error = RemoteAdapterError<<B as RemoteStoreBackend>::Error>

impl<S: ManifestStore> AsyncManifestStore for SyncStoreAsAsync<S>

type Error = <S as ManifestStore>::Error

impl<S> AsyncManifestStore for AsyncTransactionOverlayStore<'_, S>

where S: AsyncStore + AsyncManifestStore, <S as AsyncManifestStore>::Error: Send + Sync,

type Error = TransactionOverlayError

impl<S> AsyncManifestStore for OwnedAsyncTransactionOverlayStore<S>

where S: AsyncStore + AsyncManifestStore, <S as AsyncManifestStore>::Error: Send + Sync,

type Error = TransactionOverlayError