Product Tracking Dapp

My Version of Udacity Supply Chain Dapp

App deployed on Netlify

https://coffeesupplychain.netlify.app/

See contract on Rinkeby

https://rinkeby.etherscan.io/address/0x1b4D8b9bb36C5EDF0580ADF50E73FF255e3dd8d3

Contract deployment transaction

https://rinkeby.etherscan.io/tx/0x0e9a4b293e9aebebce03d765c7d823a2d84971a4d5464f025fa9125f48f352ba

App Summary

You can :

• Assign yourself roles.
• Carry out actions on crops depending on your role and whether you own the crop in question.
• See details of a crop.
• See the full transaction history of the contract.
• Transfer stars to another address.
• Put stars up for sale.
• Buy stars that are available for sale.
• Options change depending on whether you are the owner of the star that is listed.

Running the app

• Run Ganache CLI or truffle develop
• Pull down the code from GitHub

Contracts

• Run truffle compile and truffle migrate commands from the root directory

The Front-End

• cd react-app
• yarn start

Run Tests

• Run Ganache CLI or truffle develop
• Update truffle-config.js with correct host port
• Run truffle test from the root directory

Tests

• Mocha for contract tests
• Errors visible in console logs are confirming failure when account with wrong permissions attempts an action.
• See Tests Here

UML

Activity Diagram

Sequence Diagram

State Diagram

Data-Model Diagram

Required Libraries

• Truffle v5.3.6

• Solidity v0.8.0

• Web3 v1.3.0

• Node v14

• These libraries are required for this project. I used more recent versions than in the course outline as I want my learning to be as current as possible.

Optional Libraries

• Create React App. Used to provide a great starting point for the UI. As a Senior Front-End Developer who works daily with React, this is a great tool for getting a modern Front-End up and running quickly.

• Ganache. Used for local development before deploying my contracts to the Rinkeby Test Network. Used with Ganache UI as it provides useful real-time updates on transactions.

IPFS

• Not Used