flipt-engine-ffi

Flipt Engine FFI

This is the FFI layer for the Flipt client-side SDKs. It is written in Rust and exposes a C API for the SDKs to use.

It leverages the flipt-evaluation library to perform the actual evaluation and polling for evaluation state from the Flipt server.

Architecture

See ARCHITECTURE.md.

Prerequisites

• Rust
• cbindgen

Build

cargo build --release

There are some language SDKs that might require a C file header which has the definitions of the functions accessible through the FFI layer.

The cargo build command will use a build script to generate this header file by way of the cbindgen tool.

Test

cargo test