Crate file_futures

File Futures

This crate provides the Futures abstraction around many of the poll methods provided in tokio-fs.

There’s really not much to it.

Example

use std::io::SeekFrom;

use file_futures::AsyncFile;
use futures::Future;
use tokio_fs::File;

fn main() {
    let future = File::create("/tmp/some-tmpfile")
        .map_err(|e| println!("Create Error {}", e))
        .and_then(|_| {
            let future1 = File::open("/tmp/some-tmpfile")
                .and_then(|file| file.metadata().and_then(|(_file, _metadata)| Ok(())))
                .map_err(|e| println!("Error1: {}", e));

            let future2 = File::open("/tmp/some-tmpfile")
                .and_then(|file| {
                    file.seek(SeekFrom::Start(30))
                        .and_then(|(_file, _from_start)| Ok(()))
                })
                .map_err(|e| println!("Error2: {}", e));

            future1.join(future2)
        })
        .map_err(|_| panic!("Error somewhere"));

    tokio::run(future.map(|_| ()));
}

Structs

GetMetadata

Seek

SetLen

SetPermissions

SyncAll

SyncData

TryClone

Traits

AsyncFile

The trait that provides the futures associated with tokio_fs::File’s poll methods.