Book Image

Hyperledger Cookbook

By : Xun (Brian) Wu, Chuanfeng Zhang, Zhibin (Andrew) Zhang
Book Image

Hyperledger Cookbook

By: Xun (Brian) Wu, Chuanfeng Zhang, Zhibin (Andrew) Zhang

Overview of this book

Hyperledger is an open-source project and creates private blockchain applications for a range of domains. This book will be your desk reference as you explore common and not-so-common challenges faced while building blockchain networks using Hyperledger services. We'll work through all Hyperledger platform modules to understand their services and features and build end-to-end blockchain applications using various frameworks and tools supported by Hyperledger. This book's independent, recipe-based approach (packed with real-world examples) will familiarize you with the blockchain development cycle. From modeling a business network to integrating with various tools, you will cover it all. We'll cover common and not-so-common challenges faced in the blockchain life cycle. Later, we'll delve into how we can interact with the Hyperledger Fabric blockchain, covering all the principles you need to master, such as chaincode, smart contracts, and much more. We'll also address the scalability and security issues currently faced in blockchain development. By the end of this book, you will be able to implement each recipe to plan, design, and create a full-fledged, private, decentralized application to meet organizational needs.
Table of Contents (12 chapters)

Implementing models, transaction logic, access control, and query definitions

We will use Yeoman to generate a businessnetwork project template. Here, we need to modify the provided template files.

Getting ready

In Playground, select an empty-business-network template to start our model, logic, and ACL implementation:

We first rename the mode file under the models folder to org.packt.farmatrace.cto. Then we add a new script file by clicking on add a file, selecting Script File (.js), and adding a new Query File (.qry) by clicking add a file. You should then select Query File (.qry):

Remove the default generated content in these files. In earlier FarmaTrace use case analyses, we identified that we need to create the following...