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Web3 on AWS Lambda for Serverless Ethereum Development

More info here: https://coderecipe.ai/architectures/57148351

Problem Statment

Build serverless apps using Web3 library on AWS Lambda. Currently, the web3.js library requires native extensions which have to be manually installed in the same environment as AWS Lambda.

Solution

Using serverless-plugin-scripts and docker to precompile node modules and native extensions to build a working deployment of web3.js on AWS Lambda.

Prerequisites

npm install serverless

export AWS_ACCESS_KEY_ID=<your-key-here>

export AWS_SECRET_ACCESS_KEY=<your-secret-key-here>

Deploy

serverless create --template-url https://github.com/CodeRecipe-dev/Serverless-Web3 --path serverless-web3

cd serverless-web3

npm install

serverless deploy --stage sample --ROPSTEN_INFURA_URL "https://ropsten.infura.io/v3/KEY" --ETH_PRIV_KEY PRIVATE_KEY --ETH_FROM_ADDRESS ETH_FROM_ADDRESS

Invoke

serverless invoke -f EthHandler -d {'body': {'toAddress':'0x', 'ethAmount': 0.001}} --stage sample --ROPSTEN_INFURA_URL "https://ropsten.infura.io/v3/KEY" --ETH_PRIV_KEY PRIVATE_KEY --ETH_FROM_ADDRESS ETH_FROM_ADDRESS