Description

This project is used to implement GradedDAG.You can learn more about GradedDAG in our GradedDAG: An Asynchronous DAG-based BFT Consensus with Lower Latency paper.

Usage

1. Machine types

Machines are divided into two types:

• WorkComputer: just configure servers at the initial stage, particularly via ansible tool.
• Servers: run daemons of GradedDAG, communicate with each other via P2P model.

2. Precondition

• Recommended OS releases: Ubuntu 18.04 (other releases may also be OK)
• Go version: 1.16+ (with Go module enabled)
• Python version: 3.6.9+

2.1 Install go

sudo apt-get update
mkdir tmp
cd tmp
wget https://dl.google.com/go/go1.16.15.linux-amd64.tar.gz
sudo tar -xvf go1.16.15.linux-amd64.tar.gz
sudo mv go /usr/local

echo 'export PATH=$PATH:~/.local/bin:/usr/local/go/bin' >> ~/.bashrc
source ~/.bashrc
go env -w GO111MODULE="on"  
go env -w GOPROXY=https://goproxy.io 

2.2 Install ansible

sudo apt update
sudo apt install software-properties-common
sudo apt-get install ansible
sudo apt-get install sshpass

3. Run the protocol

Download our code in your WorkComputer and build it.

3.1 Generate configurations

You need to change the config_gen/config_template.yaml first, and next you can generate configurations for all Servers.

cd config_gen
go run main.go

3.2 Run

Now you should enter the ansible directory to take the next operations.You need to change the ansible/hosts first.

3.2.1 Login without passwords

The following code needs to be adjusted according to your actual situation.

ansible -i ./hosts BFT -m authorized_key -a "user=root key='{{lookup('file', '/home/root/.ssh/id_rsa.pub')}}' path='/home/root/.ssh/authorized_keys' manage_dir=no" --ask-pass -c paramiko

3.2.2 Configure servers via ansible

ansible-playbook copycode.yaml -i hosts
ansible-playbook copyconfig.yaml -i hosts

3.2.3 Run servers via ansible

ansible-playbook run-server.yaml -i hosts

3.2.4 Kill servers via ansible

ansible-playbook clean-server.yaml -i hosts