Graft Supernode (graft-ng)

Supernodes represent the Proof-of-Stake Network layer for GRAFT Network.
Their main function is instant authorizations. Instant authorizations are accomplished via supernode sample-based consensus. Supernodes get rewarded with part of the sale transaction fee for their work. Supernodes also provide DAPI into GRAFT Network, supporting various transaction types including and most notably a "Sale" transaction compatible with the Point-of-Sale environments.

GRAFT Network itself is an attempt at building a payment network that functions similarly to other credit card networks with instant authorizations, merchant paid (greately reduced) transaction proportionate fees, multiple transaction types that are compatible with point-of-sale workflows, adaptable to regulatory environments and with unlimited TPS via decentralization.

Compiling Graft Supernode from Source

Dependencies

Due to gcc 7.3.0 being a hard requirement, we strongly recommend to use Ubuntu 18.04 as a build platform*

Dependency	Min. Version	Debian/Ubuntu Pkg	Arch Pkg	Optional	Purpose
GCC	7.3.0	build-essential	base-devel	NO
CMake	3.10.2	cmake^	cmake	NO
pkg-config	any	pkg-config	base-devel	NO
Boost	1.65	libboost-all-dev	boost	NO	C++ libraries
OpenSSL	basically any	libssl-dev	openssl	NO
autoconf	any	autoconf		NO	libr3 dependency
automake	any	automake		NO	libr3 dependency
check	any	check		NO	libr3 dependency
PCRE3	any	libpcre3-dev		NO	libr3 dependency
RapidJson	1.1.0	rapidjson-dev		NO
Readline	7.0	libreadline-dev		NO	command line interface

[^] Some Debian/Ubuntu versions (for example, Ubuntu 16.04) don't support CMake 3.10.2 from the package. To install it manually see Install non-standard dependencies bellow.

Install non-standard dependencies

CMake 3.10.2

Go to the download page on the CMake official site https://cmake.org/download/ and download sources (.tar.gz) or installation script (.sh) for CMake 3.10.2 or later.

If you downloaded sources, unpack them and follow the installation instruction from CMake. If you downloaded installation script, run following command to install CMake:

sudo /bin/sh cmake-3.10.2-Linux-x86_64.sh --prefix=/opt/cmake --skip-license

If you don't want to download the installation script manually, you can simply run following command from the command line (it requires curl and you must accept license by yourself):

curl -s https://cmake.org/files/v3.12/cmake-3.10.2-Linux-x86_64.sh | bash -e

Prepare sources

Clone repository:

git clone --recurse-submodules https://github.com/graft-project/graft-ng.git

Build instructions

Linux (Ubuntu)

To build graft_server, please run the following commands:

mkdir -p <build directory>
cd <build directory>
cmake  <project root>
make

If you want to build unit test suit as well, run cmake with additional parameter:

mkdir -p <build directory>
cd <build directory>
cmake  <project root> -DOPT_BUILD_TESTS=ON
make all

Then execute graft_server_test to run the tests.

<build directory>/graft_server_test

Detailed Installation Instructions

See Instructions for more details.