You're reading from Blockchain with Hyperledger Fabric Build decentralized applications using Hyperledger Fabric 2

Product type Paperback

Published in Nov 2020

Publisher Packt

ISBN-13 9781839218750

Length 756 pages

Edition 2nd Edition

Languages

Java

Tools

Blockchain

Concepts

Blockchain

Authors (7):

Salman A. Baset

Venkatraman Ramakrishna

Salman Baset

Anthony O'Dowd

Petr Novotny

Nitin Gaur

Luc Desrosiers

+3 more

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Table of Contents (18) Chapters

Preface

1. Blockchain – An Enterprise and Industry Perspective

2. Exploring Hyperledger Fabric FREE CHAPTER

3. Business Networks

4. Setting the Stage with a Business Scenario

5. Designing Smart Contract Transactions and Ledger Data Structures

6. Developing Smart Contracts

7. Developing Applications

8. Advanced Topics for Developing Smart Contracts and Applications

9. Network Operation and Distributed Application Building

10. Enterprise Design Patterns and Considerations

11. Agility in a Blockchain Network

12. Governance – A Necessary Evil of Regulated Industries

13. Life in a Blockchain Network

14. Hyperledger Fabric Security

15. Blockchain's Future, Protocol Commercialization, and Challenges Ahead

16. Another Book You May Enjoy

17. Index

Designing Smart Contract Transactions and Ledger Data Structures

In Hyperledger Fabric, a smart contract, sometimes referred to as chaincode or just contract, is written by a developer. A contract implements a business logic agreed upon by stakeholders of the blockchain network. The functionality is exposed to client applications for them to invoke, provided they have the correct permissions.

A contract runs as an independent process in its own container, isolated from the other components of the Fabric network. An endorsing peer manages the lifecycle of the contract and of the transaction invocations. In response to client invocations, the contract queries the ledger and generates a transactions proposal.

Fabric provides Contract APIs for the development of contracts in three languages of Go, Java, and Node.js (JavaScript or TypeScript). In the first edition of this book published along with Fabric 1.2, we focused on the development of contracts in Go. The APIs and mechanisms...