Book Image

Hands-On Blockchain with Hyperledger

By : Nitin Gaur, Luc Desrosiers, Venkatraman Ramakrishna, Petr Novotny, Salman A. Baset, Anthony O'Dowd
Book Image

Hands-On Blockchain with Hyperledger

By: Nitin Gaur, Luc Desrosiers, Venkatraman Ramakrishna, Petr Novotny, Salman A. Baset, Anthony O'Dowd

Overview of this book

Blockchain and Hyperledger technologies are hot topics today. Hyperledger Fabric and Hyperledger Composer are open source projects that help organizations create private, permissioned blockchain networks. These find application in finance, banking, supply chain, and IoT among several other sectors. This book will be an easy reference to explore and build blockchain networks using Hyperledger technologies. The book starts by outlining the evolution of blockchain, including an overview of relevant blockchain technologies. You will learn how to configure Hyperledger Fabric and become familiar with its architectural components. Using these components, you will learn to build private blockchain networks, along with the applications that connect to them. Starting from principles first, you’ll learn to design and launch a network, implement smart contracts in chaincode and much more. By the end of this book, you will be able to build and deploy your own decentralized applications, handling the key pain points encountered in the blockchain life cycle.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Packt Upsell
Foreword
Contributors
Preface
Index

Updating the network


With the BNA file published and tagged to a release, we will now look at the process to install/update the business network in our consortium. More specifically, we will look at the following steps:

  • Release notification
  • Business Network update

Notifying the consortium

There are a few ways and techniques that can be applied to ensure that every organization is notified that a business network is ready to be updated.

The one thing that is for certain is that manual notification is not an option; as the number of smart contracts and participants grows, you need a reliable notification process.

The following diagram depicts a potential process for deploying a business network following the delivery of a new release:

As we've previously discussed, we do not distribute the BNA as this would create the opportunity for someone to tamper with the archive. Instead, the notification only informs every organization of the existence of a new release and lets the consortium retrieve and...