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)

Interacting with Composer through the RESTful API

Once you deploy the business network archive to the blockchain network, how do you integrate it with your client application? One solution would be to use the Hyperledger Composer REST server.

The Hyperledger Composer REST server can be used to generate a Swagger REST endpoint API from a deployed Hypeledger Fabric business network. The REST server utilizes the LoopBack and converts the business network model into an open API definition. An authenticated client calls the REST server via these endpoint APIs to interact with a blockchain. Each invoked transaction must be signed by a certificate. The REST server starts this identity and signs all transactions with this. At runtime, the REST server implements Create, Read, Update, and Delete (CRUD) operations to manipulate the state of assets and participants and allow transactions...