Smart contract indexer

info

The source code for this example is public on the following GitHub repository.

Smart contract indexer with Ethereum, Bware and genezio

In this project, we are creating an application that queries Ethereum smart contract events using Bware Endpoints and saves the log events in MongoDB.

Prerequisites

✅ NodeJs >= 18.0.0
✅ npm
✅ genezio

Note: We recommend using nvm to install Node.js and npm.

Project Structure

Inside the project folder, you will find the following files and folders:

├── backend/
│   ├── abi.js
│   ├── blockchainServer.js
│   ├── config.js
│   ├── package.json
│   └── models/
├── frontend/
│   ├── src/
│   ├── public/
│   ├── package.json
├── genezio.yaml
├── README.md
├── .genezioignore
└── tsconfig.json

Genezio looks for genezio.yaml to read the settings for deploying the project or for spinning a local dev server for testing.

The backend directory contains the implementation of the server side of the project.

The frontend directory contains a React application that talks with the genezio server.

To glue this two component together, an auto-generated SDK is installed in the client/node_modules folder. This can be used by simply importing it into the frontend source code like any other dependency of your project.

Run the project

Clone this example

Clone the repository:

git clone https://github.com/Genez-io/genezio-examples

Navigate to the following directory:

cd ./genezio-examples/javascript/blockchain

Get a database

For this project, you need a MongoDB instance for this project. You can find instruction on how to do it here.

Test your project locally

Test the project locally:

genezio local

Open a new terminal, navigate to the following directory, and run npm start to launch the React application:

cd ./client
npm run install-local-sdk
npm start

Deploy your project with genezio

If you wish to deploy your project to the Genezio infrastructure, follow these steps:

genezio login

Deploy your project using the genezio deploy command from the ./genezio-examples/javascript/blockchain directory.

genezio deploy

Commands

All commands are run from the root of the project, from a terminal:

Command	Action
`npm install -g genezio`	Installs genezio globally
`genezio login`	Logs in to genezio
`genezio local`	Starts a local server
`genezio deploy`	Deploys a production project
`genezio --help`	Get help using genezio

Want to learn more?

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Contact

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Smart contract indexer