Book Image

Oracle Blockchain Quick Start Guide

By : Vivek Acharya, Anand Eswararao Yerrapati, Nimesh Prakash
Book Image

Oracle Blockchain Quick Start Guide

By: Vivek Acharya, Anand Eswararao Yerrapati, Nimesh Prakash

Overview of this book

Hyperledger Fabric empowers enterprises to scale out in an unprecedented way, allowing organizations to build and manage blockchain business networks. This quick start guide systematically takes you through distributed ledger technology, blockchain, and Hyperledger Fabric while also helping you understand the significance of Blockchain-as-a-Service (BaaS). The book starts by explaining the blockchain and Hyperledger Fabric architectures. You'll then get to grips with the comprehensive five-step design strategy - explore, engage, experiment, experience, and in?uence. Next, you'll cover permissioned distributed autonomous organizations (pDAOs), along with the equation to quantify a blockchain solution for a given use case. As you progress, you'll learn how to model your blockchain business network by defining its assets, participants, transactions, and permissions with the help of examples. In the concluding chapters, you'll build on your knowledge as you explore Oracle Blockchain Platform (OBP) in depth and learn how to translate network topology on OBP. By the end of this book, you will be well-versed with OBP and have developed the skills required for infrastructure setup, access control, adding chaincode to a business network, and exposing chaincode to a DApp using REST configuration.
Table of Contents (8 chapters)

Integrating client applications with blockchain

So far, we have explored OBP and experimented with the development, deployment, and testing of chaincode on OBP. This section is a recap of the Integration architecture section of Chapter 3, Delving into Hyperledger Fabric. The following integration architecture diagram highlights three integration options with OBP: REST, SDK, and events.

When building and integrating a client with OBP using REST APIs—refer to the Testing chaincode from REST endpoints sectionit helps to understand the use of REST endpoints to invoke chaincode transactions. REST endpoints can be integrated with the client applications and can execute them by passing the respective headers, such as authorization, Content-Type, and the input JSON, including the mandatory channel name and chaincode name fields and the required arguments. The response...