brunopgalvao

use sha2::{Sha256, Digest};

// A single block in our proof-of-stake blockchain
#[derive(Debug, Clone)]
struct Block {
    index: u64,                    // Position in the chain (0, 1, 2, ...)
    data: String,                  // The actual data/transactions
    previous_hash: String,         // Hash of the previous block
    hash: String,                  // This block's unique identifier
    validator: String,             // Address of the validator who created this block

brunopgalvao

// The blockchain itself - a collection of blocks
struct Blockchain {
    chain: Vec<Block>,
    difficulty: usize,
}

impl Blockchain {
    // Create a new blockchain with genesis block
    fn new() -> Blockchain {
        let mut blockchain = Blockchain {

brunopgalvao

bruno@Brunos-MacBook-Pro zombienet % ./zombienet-macos -p native spawn network.toml                  
╔════════════════════╤════════════════════════════════════════════════════════════════════════════════════════════════════╗
║ 🧟 Zombienet 🧟    │ Initiation                                                                                         ║
╟────────────────────┼────────────────────────────────────────────────────────────────────────────────────────────────────╢
║ Provider           │ native                                                                                             ║
╟────────────────────┼────────────────────────────────────────────────────────────────────────────────────────────────────╢
║ Namespace          │ zombie-1720314a23576f83dad2c23dbfb9db12                                                            ║
╟────────────────────┼────────────────────────────────────────────────────────────────────────────────────────────────────╢
║ Temp Dir           │ /var/folders/vl/txnq6gdj22s9rn296

brunopgalvao

./zombienet-macos -p native spawn network.toml
╔════════════════════╤════════════════════════════════════════════════════════════════════════════════════════════════════╗
║ 🧟 Zombienet 🧟    │ Initiation                                                                                         ║
╟────────────────────┼────────────────────────────────────────────────────────────────────────────────────────────────────╢
║ Provider           │ native                                                                                             ║
╟────────────────────┼────────────────────────────────────────────────────────────────────────────────────────────────────╢
║ Namespace          │ zombie-fab3e0b5d0f9f506fc27a7a02dc7715e                                                            ║
╟────────────────────┼────────────────────────────────────────────────────────────────────────────────────────────────────╢
║ Temp Dir           │ /var/folders/vl/txnq6gdj22s9rn296z0md27w0000gn/T/zombie-fab3e0b5d0f9f506fc27a7a02dc7715e

brunopgalvao

Bruno Galvao

Bruno is an ex-Parity Technologies engineer (the company that built the Polkadot blockchain) and is now part of R0GUE.io building an L1 smart contract blockchain for Polkadot.

• https://r0gue.io/about

Bruno has over 10 years of software development experience working in large publicly traded companies as well as small software startups. His passion comes at an intersection between software craftsmanship adhering to practices such as pair programming, TDD, code reviews, agile methodology, microservices, and challenging himself on a daily basis to create scalable defect-free software, as well as leading business initiatives between client stakeholder needs and developing their go-to-market solution.

Notably, he is top ten in the Polkadot / Substrate Stack Exchange:

• https://substrate.stackexchange.com/users?tab=Reputation&filter=all

brunopgalvao

bruno@Brunos-MacBook-Pro polkadot-sdk % TEST_WS=wss://rococo-try-runtime-node.parity-chains.parity.io:443 cargo test --features=remote-test -p frame-remote-externalities -- --nocapture
   Compiling frame-remote-externalities v0.35.0 (/Users/bruno/src/polkadot-sdk/substrate/utils/frame/remote-externalities)
    Finished test [unoptimized + debuginfo] target(s) in 6.91s
     Running unittests src/lib.rs (target/debug/deps/frame_remote_externalities-bb8145f00fa019be)

running 13 tests
✅ Found 9 keys (1.14s)
✅ Found 1 keys (1.11s)
[00:00:00] ✅ Downloaded key values 29.2672/s [===========================================================================================] 9/9 (0s)
✅ Inserted keys into DB (0.00s)

brunopgalvao

Select default install

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

source ~/.cargo/env

brunopgalvao

[toolchain]
channel = "nightly-2023-01-01"
components = [ "rustfmt" ]
targets = [ "wasm32-unknown-unknown" ]
profile = "minimal"

brunopgalvao

$ rustup show
Default host: x86_64-apple-darwin
rustup home:  /Users/bruno/.rustup

installed toolchains
--------------------

stable-aarch64-apple-darwin (default)
stable-x86_64-apple-darwin
nightly-2022-02-10-x86_64-apple-darwin

brunopgalvao

WS_PORT=8000 cargo test --features e2e-tests
warning: /Users/bruno/src/substrate-contracts-node/flipper/Cargo.toml: unused manifest key: dev-dependencies.ink_e2e.package_name
   Compiling ink_e2e v4.0.1 (https://github.com/paritytech/ink.git?branch=cmichi-use-sc-chopstick-compatible#aa4345d2)
   Compiling flipper v4.0.1 (/Users/bruno/src/substrate-contracts-node/flipper)
 [1/*] Building cargo project
warning: /private/var/folders/1d/6s8fc3sd60n73mhszqvnks8w0000gn/T/cargo-contract_QcrXYr/Cargo.toml: unused manifest key: dev-dependencies.ink_e2e.package_name
    Finished release [optimized] target(s) in 0.18s
 [1/*] Building cargo project
warning: /private/var/folders/1d/6s8fc3sd60n73mhszqvnks8w0000gn/T/cargo-contract_ciBtMg/Cargo.toml: unused manifest key: dev-dependencies.ink_e2e.package_name
    Finished release [optimized] target(s) in 0.15s