Struct Backend

pub struct Backend<S: Adapter> { /* private fields */ }

The typed kv backend which implements Accessor for typed kv adapter.

Implementations

impl<S> Backend<S>

where S: Adapter,

pub fn new(kv: S) -> Self

Create a new kv backend.

pub fn with_root(self, root: &str) -> Self

Configure root within this backend.

Trait Implementations

impl<S: Adapter> Access for Backend<S>

type Reader = Buffer

Reader is the associated reader returned in read operation.

type Writer = KvWriter<S>

Writer is the associated writer returned in write operation.

type Lister = HierarchyLister<KvLister>

Lister is the associated lister returned in list operation.

type Deleter = OneShotDeleter<KvDeleter<S>>

Deleter is the associated deleter returned in delete operation.

fn info(&self) -> Arc<AccessorInfo>

Invoke the info operation to get metadata of accessor.

async fn stat(&self, path: &str, _: OpStat) -> Result<RpStat>

Invoke the stat operation on the specified path.

async fn read(&self, path: &str, args: OpRead) -> Result<(RpRead, Self::Reader)>

Invoke the read operation on the specified path, returns a Reader if operate successful.

async fn write( &self, path: &str, args: OpWrite, ) -> Result<(RpWrite, Self::Writer)>

Invoke the write operation on the specified path, returns a written size if operate successful.

async fn delete(&self) -> Result<(RpDelete, Self::Deleter)>

Invoke the delete operation on the specified path.

async fn list(&self, path: &str, args: OpList) -> Result<(RpList, Self::Lister)>

Invoke the list operation on the specified path.

fn create_dir( &self, path: &str, args: OpCreateDir, ) -> impl Future<Output = Result<RpCreateDir>> + MaybeSend

Invoke the create operation on the specified path

fn copy( &self, from: &str, to: &str, args: OpCopy, ) -> impl Future<Output = Result<RpCopy>> + MaybeSend

Invoke the copy operation on the specified from path and to path.

fn rename( &self, from: &str, to: &str, args: OpRename, ) -> impl Future<Output = Result<RpRename>> + MaybeSend

Invoke the rename operation on the specified from path and to path.

fn presign( &self, path: &str, args: OpPresign, ) -> impl Future<Output = Result<RpPresign>> + MaybeSend

Invoke the presign operation on the specified path.

impl<S: Clone + Adapter> Clone for Backend<S>

fn clone(&self) -> Backend<S>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<S: Debug + Adapter> Debug for Backend<S>

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

Formats the value using the given formatter.