This is the blockchain (substrate) code that handles the pools in Fula. Pools are a set of nodes that join together to share resources with each other or provide resources to others. It limits the amount of CPU and storage needed for the smart contract and enable the chain to do hierarchical consensus.
It enables users to do the following actions:
1- Create Pool: Anyone can create a pool which is open to others to join
2- Request to Join a Pool: Anyone can request to join an already created pool. For the join request to be accepted, more than half of the current pool members must approve the request
3- Approve/Reject join requests: Current pool members can either accept or reject join requests. Accepts and rejects can be made based on a set of agreed-on criteria. In Fula, the criteria are the ping time. Each member pings the person who wants to join and if they meet ping time criteria, the request is accepted.
A few points:
- Pool creator does not have any power over other members and is just the person who initiates a pool and set the criteria. However, in Fula, pool creator must stake tokens to be able to create a pool.
- Each pool has a limit on the number of people who can join. If more people send join requests, a copy of the pool, with the exact same criteria is created by the contract, and the first 3 join requests must be approved by the original pool members. After 3 members join the copy pool, it becomes an independent pool and join requests then must be approved by its members.