trevorbernard

pub struct Block {
    balance: u64,
}

fn get_balance(blocks: &Vec<Block>, index: usize) -> Option<u64> {
    // handle out of bounds
    match blocks.get(index) {
        Some(block) => Some(block.balance),
        None => None,
    }

trevorbernard

use std::collections::VecDeque;

type Point = (i32, i32);

fn count_number_of_lakes(grid: Vec<Vec<usize>>) -> usize {
    let mut count = 0;
    let n = grid.len();
    let m = grid[0].len();
    if n == 0 || m == 0 {
        return 0;

trevorbernard

Canonical Chain Discovery

Overview

The canonical chain discovery algorithm takes a list of precomputed block paths and classifies them into 3 distinct categories:

1. Deep Canoinical Blocks: These are blocks that form a canonical chain from the genesis block up to the witness root.

trevorbernard

use glob::glob;
use std::{
    fs,
    path::{Path, PathBuf}, time::Instant,
};

/// The BlockFileMetaData represents the parsed meta data from the
/// Precomputed Block filename.
///
/// Each mainnet precomputed block has the following grammar.

trevorbernard

use tokio::signal;
use tokio::sync::watch;
use tokio::task;

/// State machine that represents the states the Mina Indexer can be in
#[derive(Debug, Clone)]
enum State {
    Ready(Ready),
    Init(Init),
    Running(Running),

trevorbernard

User Commands (Transactions)

What are User Commands?

User commands, commonly called transactions, are user-initiated actions on the Mina blockchain. There are two types of transactions: payment transactions and stake delegations.

• Payment Transactions: Users send MINA to other users.
• Stake Delegations: Users delegate their staking weight to

trevorbernard

use std::{fs, sync::Arc, thread};

use crossbeam_channel::bounded;
use mina_indexer::{block::ingestion, mina_blocks::v1::precomputed_block::parse_file};
use tempfile::TempDir;

#[test]
fn block_ingestion_watch_blocks() -> anyhow::Result<()> {
    let block_src = "tests/data/non_sequential_blocks/mainnet-2-3NLyWnjZqUECniE1q719CoLmes6WDQAod4vrTeLfN7XXJbHv6EHH.json";
    let (watch_tx, watch_rx) = bounded(16);

trevorbernard

query StakesQuery($limit: Int = 10, $sort_by: StakeSortByInput!, $query: StakeQueryInput!) {
  stakes(limit: $limit, sortBy: $sort_by, query: $query ) {
    balance
    chainId
    delegate
    epoch
    ledgerHash
    nonce
    pk
    public_key

trevorbernard

query TransactionsQuery($limit: Int = 10, $sort_by: TransactionSortByInput!, $query: TransactionQueryInput!) {
  transactions(limit: $limit, sortBy: $sort_by, query: $query ) {
    blockHeight
    canonical
    amount
    fee
    kind
    id
    to
    from

trevorbernard

query BlocksQuery($query: BlockQueryInput!, $limit: Int = 10, $sort_by: BlockSortByInput!) {
  blocks(query: $query, limit: $limit, sortBy: $sort_by) {
    blockHeight
    dateTime
    stateHash
    transactions {
      coinbase
      coinbaseReceiverAccount {
        publicKey
      }