EVM Wallet Listener

Services which will constantly listen to configured EVM chain and detects any transaction involving accounts setup on DB.

Setup

• Run setup.sh

Check the Functionality 

1. After connecting to mongodb locally go to db tokensale and to collection wallets copy the public address from any of the wallets.
2. Do a small ether transfer from metamask to the copied address on specified network
3. After some time check balance of the ADMIN_WALLET address provided

Troubleshooting

1. Issue 1: error: Error: Number can only safely store up to 53 bits,"

• Fix: Open file .\node_modules\number-to-bn\node_modules\bn.js\lib\bn.js Go to line 506 assert(false, 'Number can only safely store up to 53 bits'); Replace it with ret = Number.MAX_SAFE_INTEGER

Test Report

1. Setup - Test completed.
2. Functionality - Need to be tested.
3. Different Chains - Need to be tested.
4. Different Environments:
   • Development - Test completed.
   • Staging - Need to be tested.
   • Production - Need to be tested.
5. Co-existence of applications on multiple chains on same server/system - Need to be tested.

To Do

1. Storing detected transaction on DB along with status. So that application won't be stuck on a single transaction if it fails.
2. Functions to retry the failed transactions again after sometime.
3. Notification if CUSTODIAL_WALLET don't have enough balance.
4. Configuring AWS QUEUE service instead of RabbitMQ.