The document provides an overview of the Truffle Suite, a development framework for building decentralized applications (dApps) on blockchain, emphasizing its key tools such as Truffle CLI, Ganache, and Drizzle. It details features like smart contract compilation, testing, and frontend integration, along with setup instructions and project management tips. Additionally, it mentions the TruffleCon 2019 event and its associated talks on smart contract security and dApp development.

1. Enterprise Blockchain Simplified
with Truffle and Kaleido
Nick Gaski & Cruz Molina

2. Introductions
Cruz Molina
Blockchain Tools Engineer at Truffle
Nick Gaski
Client Enablement at Kaleido

3. A CRASH COURSE
INTRODUCTION TO TRUFFLE
Cruz Molina
Truffle Suite

4. AGENDA
● Truffle Suite Introduction
● Truffle CLI Crash Course
○ Truffle: The Blockchain Development Framework
■ Key Truffle Features:
● Truffle Boxes
● Compiling Smart Contracts
● Testing Smart Contracts
● Deploying Projects
● Frontend Integration

5. TRUFFLE SUITE INTRODUCTION

6. 1-SLIDE OVERVIEW
● Our mission:
○ “Get developers from idea to dapp as comfortably as possible”
● Comprised of a range of different tools / components
○ Truffle CLI, Ganache, Drizzle
○ All play different roles in the development lifecycle
● 100% FOSS @ https://github.com/trufflesuite
● 3 million aggregate downloads!

7. WHO’S USING TRUFFLE?

8. TRUFFLE
● Written in Node.js
● CLI that dramatically reduces the
complexity of building DApps
○ Compiling, Testing, Migrating, etc
● Currently at Version v5.0.25

9. TRUFFLE - IN USE
● Install via npm install -g truffle
● Example commands...
> truffle init
> truffle compile
> truffle migrate
> truffle test
> truffle unbox

10. TRUFFLE BOXES
● Boilerplate projects that can be used for learning and kickstarting your
projects (everything from sample contracts, libraries, front-end views, to
complete example Dapps)
● Both officially supported + community

11. GANACHE
● “Your personal blockchain for ethereum development”
● Creates a local ethereum network for development, testing, etc
● Two flavors - Ganache & ganache-cli
○ Ganache is UI-based
○ ganache-cli is a command line tool used for automated testing
● Version 2.0 allows you to visually explore contract state, events, etc

12. GANACHE - IN USE

13. DRIZZLE
● React.js library for building web UIs for DApps
○ Installable via npm
● Reduces the amount of code you need to write than were you to
just use web3.js (although it does trade some flexibility)
● Handles the synchronization of your contract and transaction data
(and more) to a local Redux store

14. DRIZZLE - IN USE
● Managing Smart Contract Events

15. TRUFFLE CLI CRASH COURSE

16. PREREQUISITES
● Node.js (https://nodejs.org)
○ Install using NVM if you want to switch Node.js versions
● Familiarity with Solidity (https://solidity.readthedocs.io)
○ An EVM-targeted Smart Contract Language
● NPM (https://www.npmjs.com/get-npm)
○ Node Package Manager
● MetaMask (https://metamask.io)
○ An Ethereum Wallet Browser Plugin
● Truffle installed globally using NPM
npm install -g truffle

17. KEY FEATURE: TRUFFLE INIT
● truffle init quickly sets up a new Truffle project.
● Create and enter a project directory:
> mkdir truffle-hello-world
> cd truffle-hello-world
● Initialize your new project:
> truffle init

18. THE TRUFFLE PROJECT STRUCTURE
● Open the project in your preferred IDE (VS Code, Atom, Sublime, etc) and
you should see the following structure:

19. TRUFFLE BOXES - DRIZZLE BOX EXAMPLE
● truffle unbox pulls down a given truffle box and unboxes it.
● Create and enter a new project directory:
> mkdir drizzle-box
> cd drizzle-box
● Unbox drizzle:
> truffle unbox drizzle

20. KEY FEATURE: TRUFFLE DEVELOP
● truffle develop starts a local private blockchain that can be used for
testing.
● Note: it is local to your system and does not interact with the main
Ethereum network.
> truffle develop
● Notice it creates 10 temporary accounts (and their private keys) that can
be used when interacting with the blockchain.

21. KEY FEATURE: TRUFFLE COMPILE
● truffle compile compiles Solidity contracts located in a given
contracts project directory.
● While in truffle develop, run:
truffle(develop)> compile
● After successful compilation, Truffle will output contract artifacts in the
build/contracts directory.
● These artifact files are used to interact directly with your contracts.
● Note: As of v5, truffle compile supports compiling Vyper contracts!
(https://vyper.readthedocs.io)

22. KEY FEATURE: TRUFFLE TEST
● truffle test leverages the built-in Truffle testing framework to run
Mocha.js-style (https://mochajs.org/) tests detected in a given test project
directory along with Truffle-specific Solidity unit tests.
truffle(develop)> test
● For a deeper dive see:
https://www.trufflesuite.com/docs/truffle/testing/testing-your-contracts

23. KEY FEATURE: TRUFFLE MIGRATE
● truffle migrate runs migration files detected in the migrations
directory to deploy contracts to a given network.
● In truffle develop we’ll migrate to the local develop network:
truffle(develop)> migrate
● For more insight into the migrations system:
https://www.trufflesuite.com/docs/truffle/getting-started/running-
migrations

24. FRONTEND INTEGRATION — DRIZZLE
● In a separate terminal, let’s run the Drizzle React dapp:
> cd app
> npm run start
● You should see the Drizzle Example UI. 🎉
● Note: If Metamask is configured to request permission to connect to
dapps, make sure to give approval.

25. THANK YOU :)

40. TRUFFLECON 2019 | AUG 2-4 | MICROSOFT CAMPUS, REDMOND, WA
● Want to know more? Come to Trufflecon 2019!
● Thanks to our sponsors, tickets are now only $99!
○ https://www.trufflesuite.com/trufflecon2019
● A taste of some of the scheduled talks:
○ How to Build Secure Smart Contracts: A Deep Dive into Automated Tools, with Josselin
Feist (Security Engineer, TrueBit)
○ Dapp Development for the Rest of Us, with Adrian Li (Blockchain Tools Developer, Truffle)
○ Taste the Difference: Have some Truffle with your Kaleido (Kaleido & Truffle Dev Team)