Struct Backend

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

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

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impl<S> Backend<S>
where S: Adapter,

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pub fn new(kv: S) -> Self

Create a new kv backend.

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

Configure root within this backend.

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

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type Reader = Buffer

Reader is the associated reader returned in read operation.
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type Writer = KvWriter<S>

Writer is the associated writer returned in write operation.
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type Lister = HierarchyLister<KvLister>

Lister is the associated lister returned in list operation.
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type Deleter = OneShotDeleter<KvDeleter<S>>

Deleter is the associated deleter returned in delete operation.
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fn info(&self) -> Arc<AccessorInfo>

Invoke the info operation to get metadata of accessor. Read more
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async fn stat(&self, path: &str, _: OpStat) -> Result<RpStat>

Invoke the stat operation on the specified path. Read more
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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. Read more
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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. Read more
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async fn delete(&self) -> Result<(RpDelete, Self::Deleter)>

Invoke the delete operation on the specified path. Read more
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async fn list(&self, path: &str, args: OpList) -> Result<(RpList, Self::Lister)>

Invoke the list operation on the specified path. Read more
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fn create_dir( &self, path: &str, args: OpCreateDir, ) -> impl Future<Output = Result<RpCreateDir>> + MaybeSend

Invoke the create operation on the specified path Read more
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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. Read more
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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. Read more
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fn presign( &self, path: &str, args: OpPresign, ) -> impl Future<Output = Result<RpPresign>> + MaybeSend

Invoke the presign operation on the specified path. Read more
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impl<S: Clone + Adapter> Clone for Backend<S>

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

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<S: Debug + Adapter> Debug for Backend<S>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<S> Freeze for Backend<S>

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impl<S> RefUnwindSafe for Backend<S>
where S: RefUnwindSafe,

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impl<S> Send for Backend<S>

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impl<S> Sync for Backend<S>

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impl<S> Unpin for Backend<S>

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impl<S> UnwindSafe for Backend<S>
where S: RefUnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ServiceExt for T

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fn map_response_body<F>(self, f: F) -> MapResponseBody<Self, F>
where Self: Sized,

Apply a transformation to the response body. Read more
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fn decompression(self) -> Decompression<Self>
where Self: Sized,

Decompress response bodies. Read more
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fn trace_for_http(self) -> Trace<Self, SharedClassifier<ServerErrorsAsFailures>>
where Self: Sized,

High level tracing that classifies responses using HTTP status codes. Read more
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fn trace_for_grpc(self) -> Trace<Self, SharedClassifier<GrpcErrorsAsFailures>>
where Self: Sized,

High level tracing that classifies responses using gRPC headers. Read more
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fn follow_redirects(self) -> FollowRedirect<Self>
where Self: Sized,

Follow redirect resposes using the Standard policy. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> MaybeSend for T
where T: Send,