Chicon

A file abstraction system for Rust. Chicon is a library intends to provide a simple, uniform and universal API interacting with any filesystem, as an abstraction layer providing traits, types and methods. The main FileSystem trait is based on the usage of std::fs::* in order to be transparent when you want to switch from a physical filesystem to a virtual one like S3, SFTP, SSH and in-memory. It is suitable for any situation when you need to store directories and files on different filesystems. Memory file system can be appropriate when you write your tests in order to have faster behavior than an IO filesystem.

Examples

Use S3 as backend to create a file

use std::io::{Read, Write};
use chicon::{DirEntry, File, FileSystem, S3FileSystem};
let s3_fs = S3FileSystem::new(
     String::from("my_access_key_id"),
     String::from("secret_access_key"),
     String::from("my_bucket"),
     String::from("my_region"),
     String::from("http://127.0.0.1"), // endpoint
);
let mut file = s3_fs.create_file("test.test").unwrap()
file.write_all(String::from("here is a test").as_bytes()).unwrap();
file.sync_all().unwrap();
let mut content: String = String::new();
file.read_to_string(&mut content).unwrap();
assert_eq!(content, String::from("here is a test"));
s3_fs.remove_file("test.test").unwrap(); // If you want to delete the file

Use SFTP as backend to create a file

You just need to change from S3FileSystem::new to SFTPFileSystem::new.

use std::io::{Read, Write};
use chicon::{DirEntry, File, FileSystem, SFTPFileSystem};
let sftp_fs = SFTPFileSystem::new(
    String::from("127.0.0.1:2222"), // host:port
    String::from("foo"), // user
    None, // Some("passphrase") if you have a passphrase configured on your ssh key
    "/Users/foo/.ssh/my_private_key", // ABSOLUTE path to private key
    "/Users/foo/.ssh/my_public_key.pub" // ABSOLUTE path to public key
);
let mut file = sftp_fs.create_file("test.test").unwrap()
file.write_all(String::from("here is a test").as_bytes()).unwrap();
file.sync_all().unwrap();
let mut content: String = String::new();
file.read_to_string(&mut content).unwrap();
assert_eq!(content, String::from("here is a test"));

Use SSH as backend to read a file

use std::io::{Read, Write};
use chicon::{DirEntry, File, FileSystem, SSHFileSystem};
let ssh_fs = SSHFileSystem::new(
    String::from("127.0.0.1:2222"), // host:port
    String::from("foo"), // user
    None, // Some("passphrase") if you have a passphrase configured on your ssh key
    "/Users/foo/.ssh/my_private_key", // ABSOLUTE path to private key
    "/Users/foo/.ssh/my_public_key.pub" // ABSOLUTE path to public key
);
let mut file = ssh_fs.open_file("share/myfile.txt").unwrap();
let mut buffer = String::new();
file.read_to_string(&mut buffer).unwrap();
println!("Here is the content of your file: {}", buffer);

Use OS (local filesystem) as backend to create and read a directory

use std::io::{Read, Write};
use chicon::{DirEntry, File, FileType, FileSystem, OsFileSystem};
let os_fs = OsFileSystem::new();
os_fs.create_dir_all("testreaddir/test").unwrap();
os_fs.create_file("testreaddir/mytest.test").unwrap();
let dir_entries = os_fs.read_dir("testreaddir").unwrap();
assert!(!dir_entries.is_empty())
assert_eq!(dir_entries.len(), 2)
assert_eq!(
    dir_entries.get(0).unwrap().path().unwrap(),
    PathBuf::from("testreaddir/test")
);
assert_eq!(
    dir_entries.get(0).unwrap().file_type().unwrap(),
    FileType::Directory
);
std::fs::remove_dir_all("testreaddir").unwrap(); // If you want to remove dir and all entries inside

If you need more examples, check-out all tests in the source code on Github

Roadmap:

• implement FS with swift
• implement seek trait for files
• refactor with more idiomatic Rust stuff