Supply chain & data auditing

This repository containts an Ethereum DApp that demonstrates a Supply Chain flow between a Seller and Buyer. The user story is similar to any commonly used supply chain process. A Seller can add items to the inventory system stored in the blockchain. A Buyer can purchase such items from the inventory system. Additionally a Seller can mark an item as Shipped, and similarly a Buyer can mark an item as Received.

Truffle Version

Truffle v5.1.27 (core: 5.1.24)

Solidity Version

Solidity v0.5.16 (solc-js)

Node Version

Node v10.16.0

web3 Version

Web3.js v1.2.1

Contract Address(Rinkeby)

0x1a4bB2CC6E8B589d27eA709e8B2Bcbb7730162BD

Project write-up-UML

Activity Diagram

Sequence Diagram

State Diagram

Class Diagram

Project write-up-Libraries

I used one Library called Roles. It made very easy to maintain different roles in supplychain(FarmerRole,DistributorRole,ConsumerRole,RetailerRole).

Project write-up-IPFS

Yes i used IPFS to deploy my Dapp in Decentralized way not in a central server. I stored all my client-side code and build directory to dist folder and addes dist folder to ipfs. 1)You should install ipfs in your system 2)start your daemon by goin into terminal and enter command ipfs daemon. 3)now you can paste this link in your browser(Brave Browser Recommended).

The DApp User Interface when running should look like...

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

Please make sure you've already installed ganache-cli, Truffle and enabled MetaMask extension in your browser.

Give examples (to be clarified)

Installing

A step by step series of examples that tell you have to get a development env running

Clone this repository:

git clone https://github.com/udacity/nd1309/tree/master/course-5/project-6

Change directory to project-6 folder and install all requisite npm packages (as listed in package.json):

cd project-6
npm install

Launch Ganache:

ganache-cli -m "spirit supply whale amount human item harsh scare congress discover talent hamster"

Your terminal should look something like this:

In a separate terminal window, Compile smart contracts:

truffle compile

Your terminal should look something like this:

This will create the smart contract artifacts in folder build\contracts.

Migrate smart contracts to the locally running blockchain, ganache-cli:

truffle migrate

Your terminal should look something like this:

Test smart contracts:

truffle test

All 10 tests should pass.

In a separate terminal window, launch the DApp:

npm run dev

Built With

• Ethereum - Ethereum is a decentralized platform that runs smart contracts
• IPFS - IPFS is the Distributed Web | A peer-to-peer hypermedia protocol to make the web faster, safer, and more open.
• Truffle Framework - Truffle is the most popular development framework for Ethereum with a mission to make your life a whole lot easier.

Authors

See also the list of contributors who participated in this project.

Acknowledgments

• Solidity
• Ganache-cli
• Truffle
• IPFS