Harmony RPC Providers

This library provides a collection of methods to interact with the Harmony blockchain.

Currently under developement 🤓

Install

npm i @blockcoders/harmony-providers

Usage

Node

// JavaScript
const { HarmonyProvider } = require('@blockcoders/harmony-providers')

// TypeScript
import { HarmonyProvider } from '@blockcoders/harmony-providers'

Harmony SDK

Expected Methods: | Method | Description | | ------------- | ------------- | | getBlockNumber | Gets the last block number. | | getBlock | Gets the block data by block number or block hash (retrieves transactions hashes only). | | getBlockWithTransactions | Gets the block data by block number or block hash and retrieve the transactions data. | | getTransaction | Gets the transaction data by transaction hash. |

Initializing

import { HarmonyProvider, HMY_TESTNET_NETWORK } from '@blockcoders/harmony-providers'

const provider = new HarmonyProvider(HMY_TESTNET_NETWORK) // Use HMY_NETWORK to interact with Harmony's mainnet

Methods

getBlockNumber

Returns the last block number on the blockchain.

import { HarmonyProvider, HarmonyProviderMethods, HMY_TESTNET_NETWORK } from '@blockcoders/harmony-providers'

const provider = new HarmonyProvider(HMY_TESTNET_NETWORK)
const blockNumber = await provider.getBlockNumber()
// Executing the perform method 
const otherWayToGetBlockNumber = await provider.perform(HarmonyProviderMethods.getBlockNumber, {})

getBlock and getBlockWithTransactions

Returns the block data. The block can be searched by it's hash or number. It can retrieve the block transactions data or just the transactions hashes.

import { HarmonyProvider, HarmonyProviderMethods, HMY_TESTNET_NETWORK } from '@blockcoders/harmony-providers'

const provider = new HarmonyProvider(HMY_TESTNET_NETWORK)

// Searching with number

const searchByTag = "0x47db8e" // The block number can be an hexadecimal, number or "latest"
const block = await provider.getBlock(searchByTag)
const blockWithTransactionsData = await provider.getBlockWithTransactions(searchByTag)

// Searching with hash

const searchByHash = "0xd5258b03ae6b7d1ad8e932bf1aed6257241101e98be7ac6dab74013f267596de"
const sameBlock = await provider.getBlock(searchByHash)
const sameBlockWithTransactionsData = await provider.getBlockWithTransactions(searchByHash)

// Using perform
const params = {
    blockTag: "0x47db8e", // Change this property for blockHash if you want touse the hash to search the block
    includeTransactions: true // This will indicate the method whether or not to get the transactions data
}
const someBlock = await provider.perform(HarmonyProviderMethods.getBlock, params)

getTransaction

Returns the transaction data by hash.

import { HarmonyProvider, HarmonyProviderMethods, HMY_TESTNET_NETWORK } from '@blockcoders/harmony-providers'

const provider = new HarmonyProvider(HMY_TESTNET_NETWORK)

const txHash = "0x371ec289c5973c16d58cf600f8f2ce040fe8b429a6007976040d55a1759b8993"
const transaction = await provider.getTransaction(txHash)

// Executing the perform method 
const params = {
    transactionHash: "0x371ec289c5973c16d58cf600f8f2ce040fe8b429a6007976040d55a1759b8993"
}
const otherWayToGetBlockNumber = await provider.perform(HarmonyProviderMethods.getTransaction, params)

Change Log

See Changelog for more information.

Contributing

Contributions welcome! See Contributing.

Collaborators

• Jose Ramirez
• Brian Zuker
• Fernando Sirni

Acknowledgements

This project was kindly sponsored by Harmony.

License

Licensed under the MIT - see the LICENSE file for details.