Lab Name

Hyperledger Fabric Chrome Extension

Short Description

This is a Fabric Chrome extension paired with a Javascript API. Users should be able to use the Chrome Extension to authenticate to a Fabric network. The Chrome Extension should provide a JavaScript API that websites call to perform the following functions

• detect presence of extension
• initiate a transaction
• read blockchain data allowed by the extension This is an internship project, full description and context can be found on this page https://wiki.hyperledger.org/internship/project_ideas

This project is similar to MetaMask, which works with Ethereum: https://metamask.io/

Scope of Lab

Internship Project

Initial Committers

Daniel McSheehy (DanielMcSheehy, dsm140130@utdallas.edu)

Sponsor

Sheehan Anderson (srderson, sranderson@gmail.com) Binh Nguyen (binhn, binh1010010110@gmail.com)

Instructions

• Install npm
• Clone repo with git clone https://github.com/hyperledger-labs/fabric-chrome-extension/edit/master/README.md to desired directory.
• cd fabric-network/Server

If you have Fabric 1.2 installed:

• cd bash startFabric.sh
• In a second tab in the same directory run bash registerAdmin.sh and then bash registerUser.sh.
• In the third tab (same location) run nodemon server.js.

If you do not have Hyperledger Fabric Installed: run setup.sh. (This will install Fabric, register Admin/User, launch a fabric network, and start the middleware automatically)

Install Chrome extension:

• Go to chrome://extensions/ and turn on Developer mode on the top right.

• To install chrome extension click "Load Unpacked" on the extensions page and then select fabric-chrome-extension folder inside this project.

• For testing open site-example/fabric-site.html with chrome to use with the extension.

Usage

• On the chrome extension UI there is an input label Network url. Type in http://localhost:8000 and then click set.

• The chrome extension will fetch the peer and orderer url from the middle ware (service discovery) and insert into the forms.

• Click submit.

• When changing network settings click save network settings on extension to save it. (Saved peers are displayed in green, not grey)

• On the example site, try submitting a key and value on the send transaction forms and then hit send.

• Opening the console should show more information about transactions and responses.