Hands-on blockchain with hyperledger : building decentralized applications with hyperledger fabric and composer / Nitin Gaur [and five others].

Format:

Book

Author/Creator:

Gaur, Nitin, author.

Language:

English

Subjects (All):

Blockchains (Databases).

Physical Description:

1 online resource (1 volume) : illustrations

Edition:

1st edition

Place of Publication:

Birmingham, England : Packt Publishing, 2018.

System Details:

Mode of access: World Wide Web.

text file

Biography/History:

Gaur Nitin: Nitin Gaur, is the director of IBM's Blockchain Labs, and an IBM Distinguished Engineer. Desrosiers Luc: Luc Desrosiers is an IBM-certified IT architect with 20+ years of experience. Ramakrishna Venkatraman: Venkatraman Ramakrishna is an IBM researcher, with a BTech from IIT Kharagpur and PhD from UCLA. Novotny Petr: Petr Novotny is a research scientist at IBM Research, with an MSc from University College London and PhD from Imperial College London, where he was also a post-doctoral research associate. Baset Salman A. : Dr. Salman A. Baset is the CTO of security in IBM Blockchain Solutions. O'Dowd Anthony: Anthony O'Dowd is a Distinguished Engineer at IBM, focusing on Blockchain. He led IBM's contribution to the design and development of the new smart contract and application SDKs found in Hyperledger Fabric v2. Anthony has also made significant contributions to Hyperledger Fabric documentation and samples.

Summary:

Leverage the power of Hyperledger Fabric to develop Blockchain-based distributed ledgers with ease Key Features Write your own chaincode/smart contracts using Golang on hyperledger network Build and deploy decentralized applications (DApps) Dive into real world blockchain challenges such as integration and scalability Book Description BBlockchain and Hyperledger technologiesare 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. What you will learn Discover why blockchain is a game changer in the technology landscape Set up blockchain networks using basic Hyperledger Fabric deployment Understand the considerations for creating decentralized applications Learn to integrate business networks with existing systems Write Smart Contracts quickly with Hyperledger Composer Design transaction model and chaincode with Golang Deploy Composer REST Gateway to access the Composer transactions Maintain, monitor, and govern your blockchain solutions Who this book is for The book benefits business leaders as it provides a comprehensive view on blockchain business models, governance structure, and business design considerations of blockchain solutions. Technology leaders stand to gain a lot from the detailed discussion around the technology landscape, technology design, and architecture considerations in the book. With model-driven application development, this guide will speed up understanding and concept development for blockchain application developers. The simple and well organized content will put novices at e...

Contents:

Cover

Title Page

Copyright and Credits

Packt Upsell

Foreword

Contributors

Table of Contents

Preface

Chapter 1: Blockchain - Enterprise and Industry Perspective

Defining the terms - what is a blockchain?

Four core building blocks of blockchain framworks

Additional capabilities to consider

Fundamentals of the secure transaction processing protocol

Where blockchain technology has been and where it's going

The great divide

An economic model for blockchain delivery

Learning as we go

The promise of trust and accountability

Industries putting blockchain technology to work

Blockchain in the enterprise

What applications are a good fit?

How does the enterprise view blockchain?

Litmus testing to justify the application of blockchain technology

Integrating a blockchain infrastructure for the whole enterprise

Enterprise design principles

Business drivers and evolution

Ensuring sustainability

The principles that drive blockchain adoption

Business considerations for choosing a blockchain framework

Technology considerations for choosing a blockchain framework

Identity management

Scalability

Enterprise security

Development tooling

Crypto-economic models

Decentralization with systemic governance

Enterprise support

Use case-driven pluggability choices

Shared ledger technology

Consensus

Crypto algorithms and encryption technology

Use case-driven pluggable choices

Enterprise integration and designing for extensibility

Other considerations

Consensus, ACID property, and CAP

CAP

ACID

Attestation - SSCs are signed and encrypted

Use of HSMs

Summary

Chapter 2: Exploring Hyperledger Fabric

Building on the foundations of open computing

Fundamentals of the Hyperledger project

The Linux Foundation

Hyperledger.

Open source and open standards

Hyperledger frameworks, tools, and building blocks

Hyperledger frameworks

Hyperledger tools

The building blocks of blockchain solutions

Hyperledger Fabric component design

Principles of Hyperledger design

CAP Theorem

Hyperledger Fabric reference architecture

Hyperledger Fabric runtime architecture

Strengths and advantages of componentized design

Hyperledger Fabric - the journey of a sample transaction

Hyperledger Fabric explored

Components in a blockchain network

Developer interaction

Understanding governance in business networks powered by blockchain

Governance structure and landscape

Information technology governance

Blockchain network governance

Business network governance

Chapter 3: Setting the Stage with a Business Scenario

Trading and letter of credit

The importance of trust in facilitating trade

The letter of credit process today

Business scenario and use case

Overview

Real-world processes

Simplified and modified processes

Terms used in trade finance and logistics

Shared process workflow

Shared assets and data

Participants' roles and capabilities

Benefits of blockchain applications over current real-world processes

Setting up the development environment

Designing a network

Installing prerequisites

Forking and cloning the trade-finance-logistics repository

Creating and running a network configuration

Preparing the network

Generating network cryptographic material

Generating channel artifacts

Generating the configuration in one operation

Composing a sample trade network

Network components' configuration files

Launching a sample trade network

Chapter 4: Designing a Data and Transaction Model with Golang

Starting the chaincode development.

Compiling and running chaincode

Installing and instantiating chaincode

Invoking chaincode

Creating a chaincode

The chaincode interface

Setting up the chaincode file

The Invoke method

Access control

ABAC

Registering a user

Enrolling a user

Retrieving user identities and attributes in chaincode

Implementing chaincode functions

Defining chaincode assets

Coding chaincode functions

Creating an asset

Reading and modifying an asset

Main function

Testing chaincode

SHIM mocking

Testing the Init method

Testing the Invoke method

Running tests

Chaincode design topics

Composite keys

Range queries

State queries and CouchDB

Indexes

ReadSet and WriteSet

Multiversion concurrency control

Logging output

Configuration

Logging API

SHIM logging levels

Stdout and stderr

Additional SHIM API functions

Chapter 5: Exposing Network Assets and Transactions

Building a complete application

The nature of a Hyperledger Fabric application

Application and transaction stages

Application model and architecture

Building the application

Middleware - wrapping and driving the chaincode

Installation of tools and dependencies

Prerequisites for creating and running the middleware

Installation of dependencies

Creating and running the middleware

Network configuration

Endorsement policy

User records

Client registration and enrollment

Creating a channel

Joining a channel

Installation of chaincode

Instantiation of chaincode

Invoking the chaincode

Querying the chaincode

Completing the loop - subscribing to blockchain events

Putting it all together

User application - exporting the service and API

Applications

User and session management

Designing an API

Creating and launching a service.

User and session management

Network administration

Exercising the application

User/client interaction modes

Testing the Middleware and Application

Integration with existing systems and processes

Design considerations

Decentralization

Process alignment

Message affinity

Service discovery

Identity mapping

Integration design pattern

Enterprise system integration

Integrating with an existing system of record

Integrating with an operational data store

Microservice and event-driven architecture

Considering reliability, availability, and serviceability

Reliability

Availability

Serviceability

Chapter 6: Business Networks

A busy world of purposeful activity

Why a language for business networks?

Defining business networks

A deeper idea

Introducing participants

Types of participant

Individual participants

Organizational participants

System or device participants

Participants are agents

Participants and identity

Introducing assets

Assets flow between participants

Tangible and intangible assets

The structure of assets

Ownership is a special relationship

Asset life cycles

Describing asset's life cycles in detail with transactions

Introducing transactions

Change as a fundamental concept

Transaction definition and instance

Implicit and explicit transactions

The importance of contracts

Signatures

Smart contracts for multi-party transaction processing

Digital transaction processing

Initiating transactions

Transaction history

Transaction streams

Separating transactions into different business networks

Transaction history and asset states

A business network as a history of transactions

Regulators and business networks.

Discussing events from the perspective of designing a business network using Composer

A universal concept

Messages carry event notifications

An example to illustrate event structure

Events and transactions

External versus explicit events

Events cause participants to act

Loosely coupled design

The utility of events

Implementing a business network

The importance of de-materialization

Blockchain benefits for B2B and EDI

Participants that interact with the blockchain

Accessing the business network with APIs

A 3-tier systems architecture

Hyperledger Fabric and Hyperledger Composer

Chapter 7: A Business Network Example

The letter of credit sample

Installing the sample

Running the sample

Step 1 - preparing to request a letter of credit

Step 2 - requesting a letter of credit

Step 3 - importing bank approval

Step 4 - exporting bank approval

Step 5 - letter received by exporter

Step 6 - shipment

Step 7 - goods received

Step 8 - payment

Step 9 - closing the letter

Step 10 - Bob receives payment

Recapping the process

Analyzing the letter of credit process

The Playground

Viewing the business network

A description of the business network

The participant descriptions

The asset descriptions

The transaction descriptions

The event descriptions

A model of the business network

Namespaces

Enumerations

Asset definitions

Participant definitions

Concept definitions

Transaction definitions

Event definitions

Examining the live network

Examining a letter of credit instance

Examining participant instances

Examining transaction instances

Submitting a new transaction to the network

Understanding how transactions are implemented

Creating business network APIs

SWAGGER API definitions.

Querying the network using SWAGGER.

Notes:

Includes index.

Includes bibliographical references and index.

Description based on print version record.

ISBN:

9781788996044

1788996046

OCLC:

1044741213