Part 2 - Building the smart contracts

Part 2 - Building the smart contracts#

This is the second part of the project where we will actually implement the smart contract that will manage all orders between our virtual power plant participants.

Phase 1 - Designing the smart contract#

Your contract should include a function that will match selling and buying orders. This function could be called periodically by a python script. Think in advance how this function could work (the “algorithmic part”) and try to describe it in a few lines. Thinking about the behavior of a function without writing the actual code can help a lot for the implementation.

This market system will be implemented as a smart contract hosted on a blockchain. Define the key functions your contract will need. You may need to think about adding some “helpers” function that could help a software interact with your system to have insights about it like “how many orders have been emitted?” or “how many orders have not been satisfied?”. Think about the final python script that will interact with your smart contracts. What will it needs to be able to simulate our scenario and print all interesting informations?

Considering all those functions, what data should the contract manage? In other words, what should you include as variables in the contract?

Phase 2 - Implementing the smart contract#

Compilation and deployment#

Write first the core structure of your smart contracts :

You can then try to implement the different functions.

Tip

In solidity, a contract can store addresses (https://docs.soliditylang.org/en/latest/types.html#address) of a given account. In particular, a function can knows what address called it by using the function “msg.sender”

Find the base here

Contents