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FxfsBlobMetadataExt

fxfs::blob_metadata

Trait FxfsBlobMetadataExt 

Source 
pub trait FxfsBlobMetadataExt: Sized {
    // Required methods
    fn read_from<S: HandleOwner>(
        blob_object: &StoreObjectHandle<S>,
    ) -> impl Future<Output = Result<Self, Error>> + Send;
    fn write_to<S: HandleOwner>(
        &self,
        blob_object: &DataObjectHandle<S>,
    ) -> impl Future<Output = Result<(), Error>> + Send;
    fn serialized_size(&self) -> Result<usize, Error>;
    fn into_merkle_verifier(self, root: Hash) -> Result<MerkleVerifier, Error>;
}

Required Methods§

Source

fn read_from<S: HandleOwner>( blob_object: &StoreObjectHandle<S>, ) -> impl Future<Output = Result<Self, Error>> + Send

Reads the blob metadata from an attribute on blob_object. If the attribute doesn’t exist then it’s assumed to be BlobMetadata::empty().

Source

fn write_to<S: HandleOwner>( &self, blob_object: &DataObjectHandle<S>, ) -> impl Future<Output = Result<(), Error>> + Send

Writes the metadata to the AttributeId::BLOB_METADATA attribute on blob_object. If the metadata is equal to BlobMetadata::empty() then the attribute isn’t written.

Source

fn serialized_size(&self) -> Result<usize, Error>

Returns the size of the serialized metadata. If the metadata is equal to BlobMetadata::empty() then the metadata won’t get written, so 0 is returned.

Source

fn into_merkle_verifier(self, root: Hash) -> Result<MerkleVerifier, Error>

Consumes the metadata and turns it into a MerkleVerifier.

Dyn Compatibility§

This trait is not dyn compatible.

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

Implementors§