Book Image

Blockchain Development with Hyperledger

By : Salman A. Baset, Luc Desrosiers, Nitin Gaur, Petr Novotny, Anthony O'Dowd, Venkatraman Ramakrishna, Weimin Sun, Xun (Brian) Wu
Book Image

Blockchain Development with Hyperledger

By: Salman A. Baset, Luc Desrosiers, Nitin Gaur, Petr Novotny, Anthony O'Dowd, Venkatraman Ramakrishna, Weimin Sun, Xun (Brian) Wu

Overview of this book

Blockchain and Hyperledger are open source technologies that power the development of decentralized applications. This Learning Path is your helpful reference for exploring and building blockchain networks using Ethereum, Hyperledger Fabric, and Hyperledger Composer. Blockchain Development with Hyperledger will start off by giving you an overview of blockchain and demonstrating how you can set up an Ethereum development environment for developing, packaging, building, and testing campaign-decentralized applications. You'll then explore the de facto language Solidity, which you can use to develop decentralized applications in Ethereum. Following this, you'll be able to configure Hyperledger Fabric and use it to build private blockchain networks and applications that connect to them. Toward the later chapters, you'll learn how to design and launch a network, and even implement smart contracts in chain code. By the end of this Learning Path, you'll be able to build and deploy your own decentralized applications by addressing the key pain points encountered in the blockchain life cycle. This Learning Path includes content from the following Packt products: • Blockchain Quick Start Guide by Xun (Brian) Wu and Weimin Sun • Hands-On Blockchain with Hyperledger by Nitin Gaur et al.
Table of Contents (25 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Network components' configuration files


We have demonstrated how peers, orderers, and CAs can be configured in docker-compose YAML files. But such configurations are meant to override settings that have already been made by default in the components’ respective images. Though a detailed description of these configurations is beyond the scope of this book, we will list the respective files and mention how a user may make changes to them.

For a peer, a core.yaml file (https://github.com/hyperledger/fabric/blob/release-1.1/sampleconfig/core.yaml) contains all of the important runtime settings, including but not limited to addresses, port numbers, security and privacy, and the gossip protocol. You can create your own file and sync it to the container using a custom Dockerfile instead of the one that is used by the hyperledger/fabric-peer image by default. If you log in to a running peer container (let’s take the Exporter organization’s peer's container from the network we just launched):

docker...