random-access-storage
Abstract interface to implement random-access instances.
Why?
This module forms a shared interface for reading and writing bytes to
different backends. By having a shared interface, it means implementations
can easily be swapped, depending on the environment.
Usage
use random_access_storage::{RandomAccessMethods, RandomAccess};
use async_trait::async_trait;
struct S;
#[async_trait]
impl RandomAccessMethods for S {
type Error = std::io::Error;
async fn open(&mut self) -> Result<(), Self::Error> {
unimplemented!();
}
async fn write(&mut self, offset: u64, data: &[u8]) -> Result<(), Self::Error> {
unimplemented!();
}
async fn read(&mut self, offset: u64, length: u64) -> Result<Vec<u8>, Self::Error> {
unimplemented!();
}
async fn read_to_writer(
&mut self,
offset: u64,
length: u64,
writer: &mut (impl futures::io::AsyncWriter + Send)
) -> Result<(), Self::Error> {
unimplemented!();
}
async fn del(&mut self, offset: u64, length: u64) -> Result<(), Self::Error> {
unimplemented!();
}
async fn truncate(&mut self, length: u64) -> Result<(), Self::Error> {
unimplemented!();
}
async fn len(&mut self) -> Result<u64, Self::Error> {
unimplemented!();
}
async fn is_empty(&mut self) -> Result<bool, Self::Error> {
unimplemented!();
}
async fn sync_all(&mut self) -> Result<(), Self::Error> {
unimplemented!();
}
}
let _file = RandomAccess::new(S);
Installation
$ cargo add random-access-storage
See Also
License
MIT OR Apache-2.0