2 releases

Uses old Rust 2015

0.9.1 Sep 13, 2017
0.9.0 Jul 17, 2017
Download history 12/week @ 2021-06-03 15/week @ 2021-06-10 10/week @ 2021-06-17 10/week @ 2021-06-24 10/week @ 2021-07-01 13/week @ 2021-07-08 11/week @ 2021-07-15 17/week @ 2021-07-22 16/week @ 2021-07-29 27/week @ 2021-08-05 9/week @ 2021-08-12 12/week @ 2021-08-19 5/week @ 2021-08-26 1/week @ 2021-09-02 13/week @ 2021-09-09 7/week @ 2021-09-16

51 downloads per month

MIT license

38KB
798 lines

Rust leveldb bindings

Incomplete bindings for leveldb for Rust.

Rust version policy

leveldb is built and tested on stable releases of Rust. This is currently 1.0.0-beta. Nightlies might not build at any point and failures are allowed.

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 = "*"

Development

Make sure you have all prerequisites installed. Run

$ cargo build

for building and

$ cargo test

to run the test suite.

Examples

#[allow(unstable)]

extern crate leveldb;

use std::fs::TempDir;
use leveldb::database::Database;
use leveldb::iterator::Iterable;
use leveldb::options::{Options,WriteOptions,ReadOptions};

fn main() {
  let tempdir = TempDir::new("demo").unwrap();
  let path = tempdir.path();
  
  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 read_opts = ReadOptions::new();
  let mut iter = database.iter(read_opts);
  let entry = iter.next();
  assert_eq!(
    entry,
    Some((1, vec![1]))
  );
}

Open issues

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

License

MIT, see LICENSE

Dependencies

~1.5MB
~25K SLoC