Trait Backend 

pub trait Backend: Sized {
    // Required methods
    fn get(
        &self,
        name: &str,
    ) -> impl Future<Output = Result<Option<Vec<u8>>, String>>;
    fn get_range(
        &self,
        name: &str,
        from: u64,
        len: u64,
    ) -> impl Future<Output = Result<Option<Vec<u8>>, String>>;
    fn put(
        &self,
        name: &str,
        bytes: &[u8],
    ) -> impl Future<Output = Result<(), String>>;
    fn delete(&self, name: &str) -> impl Future<Output = Result<(), String>>;
    fn list(&self) -> impl Future<Output = Result<Vec<(String, u64)>, String>>;
    fn staging(&self) -> impl Future<Output = Result<Self, String>>;
    fn rename(
        &self,
        name: &str,
        to: &Self,
    ) -> impl Future<Output = Result<(), String>>;
}

Named bytes. A put is whole or absent: no reader sees half of one.

Required Methods

fn get( &self, name: &str, ) -> impl Future<Output = Result<Option<Vec<u8>>, String>>

fn get_range( &self, name: &str, from: u64, len: u64, ) -> impl Future<Output = Result<Option<Vec<u8>>, String>>

At most len bytes from from on, fewer where the name ends sooner.

fn put( &self, name: &str, bytes: &[u8], ) -> impl Future<Output = Result<(), String>>

fn delete(&self, name: &str) -> impl Future<Output = Result<(), String>>

fn list(&self) -> impl Future<Output = Result<Vec<(String, u64)>, String>>

Each name, with its size in bytes.

fn staging(&self) -> impl Future<Output = Result<Self, String>>

An area beside these names that no other store writes and list never names.

fn rename( &self, name: &str, to: &Self, ) -> impl Future<Output = Result<(), String>>

name moved from here into to in one step, over whatever to held under it.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors