Demo code for "What you might not know about VeChainThor yet (Part II) - Forcible Transaction Dependency"

Introduction

The data field DependsOn of the transaction (TX) model is designed for enabling a forcible TX dependency on VeChainThor. If we set DependsOn of a TX using the TXID of another TX, then the TX would be accepted for processing only if the referred TX is already in the ledger and, moreover, not reverted.

This demo does the following:

1. Send TX TX1 that will not be reverted (by calling sendNotRevertedTX)
2. Send TX TX2 that will be reverted (by calling sendRevertedTX)
3. Send TX TX3 that depends on a non-existing TXID (by calling sendTestTX)
4. Send TX TX4 that depends on TX1 (by calling sendTestTX)
5. Send TX TX5 that depends on TX2 (by calling sendTestTX)

Function checkTXs checks the five TXs in the next 5 new blocks and shows whether each TX is found in the blocks and if found, whether it is reverted.

Installation

Download the code via

git clone https://github.com/zzGHzz/ThorDemo2.git

After that, install all the required packages and you are good to go.

Notice

The private key hard coded in the sample code is for this demo only. Please avoid using it in any other circumstance.

This code connects VeChainThor's test net via

const driver = await DriverNodeJS.connect("https://sync-testnet.vechain.org");
const connex = new Framework(driver);