Blockchain simple indexer

Getting Started

There are 3 main components in the project:

1. api: Fastify.js to provide REST access
2. db: PostgreSQL to store all indexed data
3. worker: indexer to crawl from blockchain then push to database

Prerequisites

• docker
• docker-compose

Usage

The Avalanche network was taken as an example for synchronization (C-chain)

We use docker-compose for testing this solution

docker-compose up

Some port will be open after that

Service	Port
API	3011
PostgreSQL	5439

List of endpoints

Main

GET http://localhost:3011/transactions/0xb31f66aa3c1e785363f0875a1b74e27b85fd66c7 - list transactions made or received from a certain address sorted by blockNumber and transactionIndex

GET http://localhost:3011/transactions/0xb31f66aa3c1e785363f0875a1b74e27b85fd66c7/count - number of transactions made or received from a certain address

GET http://localhost:3011/transactions/top-values - list of transactions sorted by value (amount of $AVAX moved)

GET http://localhost:3011/top-balances - list of 100 addresses with largest balance that made or received a transaction

Additional

GET http://localhost:3011/health-check - just a test of the service

GET http://localhost:3011/stats - statistics of synchronization

GET http://localhost:3011/blocks - last block number in blockchain

Posman config-file

docs/postman

Synchronization of 10000 blocks usually takes 10-20 minutes