Book Image

Blockchain Development with Hyperledger

By : Salman A. Baset, Luc Desrosiers, Nitin Gaur, Petr Novotny, Anthony O'Dowd, Venkatraman Ramakrishna, Weimin Sun, Xun (Brian) Wu
Book Image

Blockchain Development with Hyperledger

By: Salman A. Baset, Luc Desrosiers, Nitin Gaur, Petr Novotny, Anthony O'Dowd, Venkatraman Ramakrishna, Weimin Sun, Xun (Brian) Wu

Overview of this book

Blockchain and Hyperledger are open source technologies that power the development of decentralized applications. This Learning Path is your helpful reference for exploring and building blockchain networks using Ethereum, Hyperledger Fabric, and Hyperledger Composer. Blockchain Development with Hyperledger will start off by giving you an overview of blockchain and demonstrating how you can set up an Ethereum development environment for developing, packaging, building, and testing campaign-decentralized applications. You'll then explore the de facto language Solidity, which you can use to develop decentralized applications in Ethereum. Following this, you'll be able to configure Hyperledger Fabric and use it to build private blockchain networks and applications that connect to them. Toward the later chapters, you'll learn how to design and launch a network, and even implement smart contracts in chain code. By the end of this Learning Path, you'll be able to build and deploy your own decentralized applications by addressing the key pain points encountered in the blockchain life cycle. This Learning Path includes content from the following Packt products: • Blockchain Quick Start Guide by Xun (Brian) Wu and Weimin Sun • Hands-On Blockchain with Hyperledger by Nitin Gaur et al.
Table of Contents (25 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Hyperledger Composer – a quick overview


Hyperledger Composer is a set of JavaScript-based high-level toolsets and frameworks that simplify and quickly build and run an application on top of a Hyperledger Fabric blockchain. Business owners and developers can quickly create smart contracts and applications via the composer tool. The composer tool generates a RESTful endpoint to interact with fabric channels. Instead of writing chaincode using Golang, Composer uses model language to generate a business network archive (.BNA) file for the blockchain network.

 

Here is an example of a Hyperledger Composer solution architecture:

Hyperledger Composer contains the components that are listed in the following sections.

 

Yeoman generator

The npm module generator-hyperledger-composer in Yeoman is used to make templates for Hyperledger Composer. It supports and generates three different types of templates:

  • CLI application
  • Angular 2 application
  • Skeleton business network

You can use Yeoman's generated angular skeleton...