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Build Status Current Version License

cassandra-cpp

This is a maintained Rust project that exposes the DataStax cpp driver at https://github.com/datastax/cpp-driver/ in a somewhat-sane crate. It was originally a fork of https://github.com/tupshin/cassandra-rs but that is no longer maintained.

It is a wrapper around the raw driver binding crate cassandra-cpp-sys.

Documentation (crates.io).

Getting started

Local environment

For this crate to work, you must first have installed the datastax-cpp driver. Follow the steps in the cpp driver docs to do so. Pre-built packages are available for most platforms.

Make sure that the driver (specifically libcassandra_static.a and libcassandra.so) are in your /usr/local/lib64/ directory

Floki

Alternatively you can use the Floki utility to create you a Dockerized compilation environment. After installing Floki, just type

floki

in the root of this project. You will be dropped into a Rust compilation environment; type cargo build as normal to build the driver.

Documentation

See the API documentation.

The Cassandra Query Language (CQL) documentation is likely to be useful.

Since this crate provides a relatively thin wrapper around the DataStax driver, you may also find the DataStax documentation and API docs useful.

Example

For a straightforward example see simple.rs.

There are additional examples included with the project in tests and examples.

Futures (version 0.15)

Since version 0.15, this crate uses std::future, allowing your code to use futures:0.3, async/await, etc.

Previous versions (up to 0.14) used futures:0.1. You can either remain on the 0.14 stream, update your code to use std::future, or use a compatibility shim (e.g., futures::compat).

Migrating from version 0.8

The API changed significantly in version 0.10. (Version 0.9 was skipped, for consistency with the cassandra-cpp-sys version number.) For a summary of the main changes, see CHANGELOG.

License

This code is open source, licensed under the Apache License Version 2.0 as described in LICENSE.

Contributing

Please see CONTRIBUTING.md for details on how to contribute to this project.

Development

This crate is regularly built by Travis; to see details of the most recent builds click on the "build" badge at the top of this page.

You must have the DataStax driver installed on your system in order to build this crate.

The unit tests assume Cassandra is running on the local host accessible on the standard port. The easiest way to achieve this is using Docker and the standard Cassandra image, with

docker pull cassandra
docker run -d --net=host --name=cassandra cassandra

You should run them single-threaded to avoid the dreaded org.apache.cassandra.exceptions.ConfigurationException: Column family ID mismatch error. The tests share a keyspace and tables, so if run in parallel they interfere with each other.

cargo test -- --test-threads 1

Remember to destroy the container when you're done:

docker stop cassandra
docker rm cassandra

History

This project was forked from cassandra, which was no longer being maintained.

About

Cassandra (CQL) driver for Rust, using the DataStax C/C++ driver under the covers.

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