Rust leveldb bindings

Incomplete bindings for leveldb for Rust.

Prerequisites

snappy and leveldb need to be installed. On Ubuntu, I recommend.

sudo apt-get install libleveldb-dev libsnappy-dev

Usage

If your project is using Cargo, drop the following lines in your Cargo.toml:

[dependencies]

leveldb = "0.3.1"

Development

Make sure you have all prerequisites installed. Run

$ cargo build

for building and

$ cargo test

to run the test suite.

Examples

#[allow(unstable)]
use std::io::TempDir;
use leveldb::database::Database;
use leveldb::iterator::Iterable;
use leveldb::options::{Options,WriteOptions,ReadOptions};

let tempdir = TempDir::new("demo").unwrap();
let path = tempdir.path().join("simple");

let mut options = Options::new();
options.create_if_missing = true;
let mut database = match Database::open(path, options) {
    Ok(db) => { db },
    Err(e) => { panic!("failed to open database: {}", e) }
};

let write_opts = WriteOptions::new();
match database.put(write_opts, 1, &[1]) {
    Ok(_) => { () },
    Err(e) => { panic!("failed to write to database: {}", e) }
};

let read_opts = ReadOptions::new();
let res = database.get(read_opts,
                       1);
match res {
  Ok(data) => {
    assert!(data.is_some());
    assert_eq!(data, Some(vec![1]));
  }
  Err(e) => { panic!("failed reading data: {}", e) }
}


let iterable: &mut Iterable<int, Vec<u8>> = database;

let read_opts = ReadOptions::new();
let mut iter = database.iter(read_opts);
let entry = iter.next();
assert_eq!(
  entry,
  Some((1, vec![1]))
);

Open issues

• Snapshots are missing
• Filter policies are missing
• Iterators with arbirary start and end points are unsupported

License

MIT, see LICENSE