massa 1.6.1

Massa package is an SDK that connects your Dart and Flutter applications to the Massa blockchain, create wallet, send transactions, and work with smart contracts.

massa

Massa is a public blockchain and protocol that aims to deliver decentralization, scale and security for many people. It uses PROOF OF STAKE consensus mechanism to ensures full participation, protection, and high transaction throughput.

Introduction

Massa-dart is an SDK that is able to connect your Dart and Flutter applications to the Massa blockchain, create wallet, send transactions, and work with smart contracts.

Features

This package will allows you to interact with massa blockchain using the folloiwng public and privated grpc methods.

GRPC Public API (node_ip:33037)

• ✅ executeReadOnlyCall
• ✅ getBlocks
• ✅ getDataStoreEntries
• ✅ getNextBlockBestParents
• ✅ getOperations
• ✅ getScExecutionEvents
• ✅ getSelectorDraw
• ✅ getStakers
• ✅ getStatus
• ✅ getTransactionThroughput
• ✅ queryState
• ✅ newBlocks
• ✅ newEndorsements
• ✅ newFilledBlocks
• ✅ newOperations
• ✅ newSlotExecutionOutputs
• ✅ sendBlocks
• ✅ sendEndorsements
• ✅ sendOperations
• ✅ transactionThroughput

GRPC Private API (node_ip:33038)

• ✅ addToBootstrapBlacklist
• ✅ addToBootstrapWhitelist
• ✅ addToPeersWhitelist
• ✅ addStakingSecretKeys
• ✅ allowEveryoneToBootstrap
• ✅ banNodesByIds
• ✅ banNodesByIps
• ✅ getBootstrapBlacklist
• ✅ getBootstrapWhitelist
• ✅ getMipStatus
• ✅ getNodeStatus
• ✅ getPeersWhitelist
• ✅ removeFromBootstrapBlacklist
• ✅ removeFromBootstrapWhitelist
• ✅ removeFromPeersWhitelist
• ✅ removeStakingAddresses
• ✅ signMessages
• ✅ shutdownGracefully
• ✅ unbanNodesByIds
• ✅ unbanNodesByIps

Getting started

Check usage in /test folder.

Usage

View more examples in /example folder.

The example below shows how to get list of stakers

import 'package:massa/massa.dart';

Future<void> main() async {
  const ipAddress = 'test.massa.net';
  const port = 33037;
  var grpc = GRPCPublicClient(ipAddress, port);
  final stakers = await grpc.getStakers(limit: Int64(10));
  if (stakers.isEmpty) {
    print('No stakers found');
    return;
  }

  final totalAddresses = stakers.length;
  Int64 totalRolls = Int64(0);
  for (var staker in stakers) {
    print('${staker.address}:${staker.rolls}');
    totalRolls += staker.rolls;
  }
  print('Total addresses: $totalAddresses');
  print('Total rolls: $totalRolls');
  await grpc.shutDown();
}

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Additional information

You can get more information about massa by visiting the links below.

Links

• Massa: Massa main website
• Testnet: Massa testnet
• Massa Documentation: Valuable massa documentation
• Massa Github: Massa official github repository
• Massa Web3: massa-dart will have similar functionalities as massa-web3

Support

This project is supported by massa

Contribute

You can contribute to this package, request new features or report any bug by visiting the package repository at massa-dart

License

The MIT License (MIT). Please see License File for more information.