Install & Test

Before deploying the contracts, install all the required dependancies by running npm install.

In the separate terminal window run the Ganache with ganache-cli command.

Then run test files to see the contracts being deployed and tested with truffle test command (will run all the tests).

Contracts Deployment

The code has been set up using Truffle framework and contains the following contracts: CARegistry.sol, Product.sol and oracle contracts Oracle.sol, OracleClient.sol, OracleInterface.sol.

All contracts can be deployed by running truffle deploy command.

First, it deploys CARegistry.sol with DOA address as the contract owner. Then we Oracle.sol with oracle owner address, and then Product.sol with contract owner address, CA Registry contract address and Oracle contract address.

Test Files

The directory test has four test files that deploy and test smart contracts using various scenarious.

Utilities

The utilities directory contains three files that provide off-chain computations to the smart contracts, such as generating certificate, initiating and sending data to the IPFS storage, retrieving data from IPFS, and quering external API.

Since our oracle ideally would be connected to the thermometer installed in the physical batch storage to report the temperature, we have used a random number generator API to imitate query for temperature.