04 - Blockchain Technology - Hyperledger Fabric
- 1. Blockchain Technology 1 Hyperledger Fabric Anjum Naveed, PhD (UNSW Australia) Copyright © 2018 by ITROOS (Pvt.) Ltd All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the publisher, except in the case of brief quotations embodied in critical reviews and certain other noncommercial uses permitted by copyright law. For permission requests, write to the publisher at the address below. ITROOS info@itroos.net www.itroos.net
- 2. Topics Covered What is Hyperledger Fabric? Praises for Fabric (Because we are using it) Components of Fabric based software 2 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 3. Hyperledger Fabric Designed by IBM Managed and developed by Linux Foundation Key features Primary focus is consensus Smart contracts based systems are preferred compared to cryptocurrency 3 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 4. Why Hyperledger Fabric Generic Under Linux foundation, long term development support in form of open source community is expected Compared to Bitcoin and Ethereum, more suitable for broad range of applications Private blockchains favoured 4 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 5. Components of Hyperledger Fabric Storage Channels Network Blockchain creators Fabric-Orderers Peers Fabric-peers Perform block and transaction endorsements Business logic Chaincodes 5 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 6. Hyperledger Fabric Components Client/SDK/API Node JS based API to access blockchain through chain code Frontend to backend connection Established through non-fabric components PM2 or Node JS server (Preferred) Frontend Conventional 6 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 7. Blockchain Application Eco system 7 GUI (Any) Backend Server (Node JS) Blockchain API (Node JS) Business Logic (Chaincode) Blockchain Network (Orderer Peer) Blockchain (Channels Couchdb) Cryptographic Support (Fabric-CA) Support tools: Configtxgen cryptogen Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 8. A word about Hands-on material Two choices Developed by us Available on Hyperledger website We will try to use the material available on Hyperledger website as much as possible This will help participants understand the material and explore other material available on the website Where we were not satisfied with writing, we have developed our own material and will provide as needed All Hyperledger material will be complemented by helpful tips to allow better understanding. 8 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 9. Links Pre-requisites https://hyperledger-fabric.readthedocs.io/en/ release-1.2/prereqs.html Build your first network https://hyperledger-fabric.readthedocs.io/en/ release-1.2/build_network.html Running your first chaincode https://hyperledger-fabric.readthedocs.io/en/ release-1.2/write_first_app.html Writing your first chaincode https://hyperledger-fabric.readthedocs.io/en/ release-1.2/chaincode4ade.html We will use first chaincode as sample 9 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018
- 10. Links Network for our application Reference of first network will be used SDK Reference of fabler and marbles SDKs will be used with our own examples Linking SDK to frontend Our own example application will be used 10 Confidential- ©Copy Rights ITROOS(Pvt) Ltd 2018