Development Network (to be deprecated)

NOTE: We recommend using the newer toolkit fn dev, this page may be deprecated in future releases.

This guide walks through how to deploy a local blockchain instance for software development and testing purposes. Alternatively, developers can also develop and test on Anvil Testnet.

1. Prerequisites

i) Install Golang

https://go.dev/doc/install

Tips for Linux (Ubuntu)

# first command needs to be run as root, rest as your normal user
wget https://go.dev/dl/go1.18.3.linux-amd64.tar.gz
sudo su
rm -rf /usr/local/go && tar -C /usr/local -xzf go1.18.3.linux-amd64.tar.gz

# exit root now
exit

# add to path. For more permanent you should add this line to bottom of your ~/.profile
export PATH=$PATH:/usr/local/go/bin

# check go version
go version

ii) Install Rust

https://rustup.rs/

If already installed, please update to 1.59 or newer

rustup update

iii) Install System Specific Dependencies

Ubuntu

sudo apt update && \
sudo apt upgrade -y && \
sudo apt install -y build-essential libleveldb-dev libssl-dev pkg-config clang libclang-dev librocksdb-dev

Mac

brew install openssl leveldb

2. Build Required Binaries

Findora blockchain can run on both MacOS or Linux. The commands below will build all required binaries to start a local Findora blockchain.

git clone -b v0.3.19-release https://github.com/FindoraNetwork/platform && \
cd platform && \
make build_release

Please make sure to add all below 3 binaries to your $PATH. By default, they will be copied to ~/.cargo/bin/ which should already be in your $PATH.

• stt: The tool to initialize Findora blockchain.

• abcid: Findora core protocol.

• tendermint: Tendermint consensus engine.

3. Install Python3 and toml-cli

Findora devnet tools are written in Python3 and use toml-cli to manipulate configuration files. Install Python3 if not already installed. Also, install toml-cli using the command below:

pip3 install toml-cli

and then copy newly installed toml cli tool to /usr/local/bin to make it visiable

cp /Library/Python/3.x/site-packages/toml /usr/local/bin

4. Run Devnet

Inside your platform directory, execute make devnet in the terminal.

i) What's in devnet?

Name	Description
node0	The validator
node1	The fullnode
Faucet	The key pair that holds FRA

ii) How to control devnet?

The local blockchain can be stopped and restarted anytime during development and tests.

• Stop Blockchain: ./tools/devnet/stopnodes.sh

• Restart Blockchain: ./tools/devnet/startnodes.sh

• Start Over: make devnet again.

5. Devnet URLs and Ports

URL	Purpose
http://127.0.0.1	connects to Findora Electron Wallet
http://127.0.0.1:8545	connects to Web3 HTTP
http://127.0.0.1:8546	connects to Web3 WebSocket

6. Troubleshoot

• Problem 1
  • Error Message:
    • make build_release fails with go:linkname must refer to declared function or variable
• Solution
  • Update your golang.org/x/sys

      # go to platform/tools/tendermint run following to update
      go get -u golang.org/x/sys

  ---

• Problem 2
  • .findora file is missing
• Solution
  • manually add .findora to your home directory (i.e. directory ~)