bren

Business rule calculation engine with LUA script-based rules.

Requirements

Before you start building the solution witch clang or g++, you need to install required dependencies.

• C++ compiler -std=c++17 or higher (g++ or clang)
• Make
• Pistache - REST framework for C++
• RapidJson
• Lua 5.3+ - for rule scripting
• Sol2/3 - C++ bindings for Lua (header only library)
• optional: luarocks install lsqlite3complete (only for running rule018.lua)

On MAC M1

$ brew install pistache
$ brew install rapidjson
$ brew install lua
$ brew install luarocks

On Linux

Depending on Linux distribution use proper command to install dependencies.

Building

Assuming you have already C++ compiler and make and all dependencies, build solution as follow:

On MAC M1

$ make -f Makefile-macm1

On Linux

$ make -f Makefile-linux

Installing

Rules

The rules are located in the rules/ directory.

Running

bren is starting as foreground service on TCP port 2345 but using --port number you can pass other port.

$ ./business_rule_engine --port 12345

Testing

test/ directory contains some simple examples. Service has been tested on Mac M1, Macbook Pro Intel, VoidLinux and ArchLinux.

Licence

MIT