sanchaymittal / assignment

Web3 API

API

1. The emails used for signing up to Infura: [email protected]
2. A screenshot of the "Stats" dashboard of your project showing the graphs of network traffic

How to set it up[LocalHost]

Prerequisites

Ensure you have Nodejs & NPM installed on your machine. Use Chrome or Firefox as your browser...

1. Node.js (v10+): Install or update Node.js from official page.

$ node -v
$ npm -v
$ npm install -g update-node

OR

Yarn (v1+): Install Yarn from official Page.

$ yarn --version

Setup the Environment

$ mkdir repo && cd repo
$ git clone https://github.com/sanchaymittal/Assignment
$ cd Assignment
$ yarn 
or
$ node install

ps: If permission is denied, please use sudo as a prefix to any command provided. And if you are intrested in making permenant changes to avoid future issues use chmod

Host Server

$ node server.js 

Run

http://localhost:3000/getTransaction?address=0x002002812b42601ae5026344f0395e68527bb0f8

Update the address, To use the API to find the transactions emitted by the user address.

Optional...

1. Update the Firebase Hosting

• Create a Cloud Firestore database
• Generate KeyPair from firebase cloud test hosting project.
• Save the KeyPair file and update serviceAccount and databaseURL.

2. Connect to Ethereum node(hosted by Infura) & Catch the Latest blocks on Kovan Network

$ node main.js

Docker

Prerequisites

1. Docker (v18.+): Install Docker from official Page.

$ Docker --version

Setup the Environment

$ mkdir repo && cd repo
$ git clone https://github.com/sanchaymittal/Assignment
$ cd Assignment

Run

$ docker build -t <imageName> .
$ docker run -p 49160:3000 <imageName>

Assignment

• Connect to an Ethereum node (hosted by Infura) using web3js on the Kovan testnet. Reference.
• You can use this blockchain testnet API endpoint on Infura: kovan.infura.io/v3/6c6f87a10e12438f8fbb7fc7c762b37c
• Index the data in a database of your choice that will serve as the datastore for the API requests. Most important fields in a transaction for the purpose of this assignment will be from, to, blockNumber and transactionHash.
• We would like you to index at least 10,000 recent blocks.
• Construct an API to retrieve the user transactions, given the user address.
• Push all the code you write in a github repository and share it with us.
• Please include the instructions to run the server in the README.
• Cookie points for a clean commit history that reflects your progress.
• (Optional) Bonus points for including a docker file to spin up everything together.