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feat: ✨ Blockchain, Block, Mining ⛏️

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Ahmet Kaan GÜMÜŞ 2024-05-21 04:10:26 +03:00
parent 7950b6fc13
commit 7a8582748c
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Cargo.toml Normal file
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[package]
name = "rust-blockchain"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
chrono = "0.4.38"
serde = { version = "1.0.202", features = ["derive"] }
serde_json = "1.0.117"
sha3 = "0.10.8"

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src/block.rs Normal file
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use chrono::Utc;
use serde::{Deserialize, Serialize};
use sha3::{Digest, Sha3_512};
use crate::blockchain::BlockChain;
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Block {
pub index: u64,
pub timestamp: u64,
pub proof_of_work: u64,
pub previous_hash: String,
pub hash: String,
}
impl Block {
pub fn calculate_hash(&self) -> String {
let serialized_block_data = serde_json::to_string(&self).unwrap();
let mut hasher = Sha3_512::new();
hasher.update(serialized_block_data);
let hash = hasher.finalize();
format!("{:x}", hash)
}
pub fn new(index: u64, previous_hash: String) -> Self {
Block {
index,
timestamp: Utc::now().timestamp_millis() as u64,
proof_of_work: 0_u64,
previous_hash,
hash: String::new(),
}
}
pub fn mine(&mut self, blockhain: BlockChain) -> Self {
let mut hash = self.calculate_hash();
loop {
if !hash.starts_with(&"0".repeat(blockhain.difficulty)) {
self.proof_of_work += 1;
hash = self.calculate_hash();
} else {
self.hash = hash;
break;
}
}
self.clone()
}
}

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src/blockchain.rs Normal file
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use chrono::Utc;
use crate::block::Block;
#[derive(Debug, Clone)]
pub struct BlockChain {
pub genesis_block: Block,
pub chain: Vec<Block>,
pub difficulty: usize,
}
impl BlockChain {
pub fn new(difficulty: usize) -> Self {
let genesis_block = Block {
index: 0,
timestamp: Utc::now().timestamp_millis() as u64,
proof_of_work: 0_u64,
previous_hash: String::new(),
hash: String::new(),
};
let chain = vec![genesis_block.clone()];
let blockchain = BlockChain {
genesis_block,
chain,
difficulty,
};
blockchain
}
pub fn add_block(&mut self) {
let new_block = Block::new(
self.chain.len() as u64,
self.chain[&self.chain.len() - 1].previous_hash.clone(),
)
.mine(self.clone());
self.chain.push(new_block);
}
}

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src/lib.rs Normal file
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pub mod block;
pub mod blockchain;

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src/main.rs Normal file
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use std::time::Instant;
use rust_blockchain::blockchain::BlockChain;
fn main() {
println!("Hello, world!");
let difficulty = 1;
let mut blockchain = BlockChain::new(difficulty);
let time = Instant::now();
BlockChain::add_block(&mut blockchain);
println!(
"\t ⛏️⛏️⛏️ | Mined | ⛏️⛏️⛏️\n\n\tElapsed: {:?}\n\n{:#?}",
time.elapsed(),
blockchain
);
}