This is the source code powering usdcfaucet.com, a free crypto faucet.

Prerequisites

• Send some USDC ERC-20 tokens to an eth address that you own the private key to. Make sure the address also has ETH as gas.
• https://infura.io account. Free version works!
• Google recaptcha v2 account
• Nodejs 8.10

Setup

To start, clone the repo and install modules

1. ccmonkey user$ npm install

AWS

• Lambda + API Gateway setup + S3 + DynamoDB Good tutorial here https://aws.amazon.com/getting-started/projects/build-serverless-web-app-lambda-apigateway-s3-dynamodb-cognito/

• Lambda setup with one function RequestUSDC, Node.js 8.10

  • Be sure to fill the environment variables. ethAddress, ethPrivateKey, infuraProjectSecret

• DynamoDB setup with three tables:

• (TableName, Column, Column, etc.)
  • Currency: CurrencyName, Nonce
  • Request: UserId, NumberOfRequests
  • Send: SendId, DestinationAddress, ETHSendURL, IPAddress, SendDate, TxHash, Testnet

• Lambda Layers We only deploy the api code each time we push to Lambda. This allows our deploys to be much faster as we don't need to re-deploy sizable node modules unless our dependencies change.

Web

Navigate to the Web directory

1. ccmonkey user$ npm install http-server -g
2. web user$ http-server
3. in chrome, go to http://localhost:8080/