This repository contains the Solidity source code for the smart contracts behind the pool deployer, directory, lens, liquidator, and oracles for Fuse's open ecosystem of interest rate pools, built on top of our fork of compound-protocol. See here for the Rari dApp or here for the Fuse SDK.
Fuse by Rari Capital is a decentralized ecosystem of interest rate pools based on the Ethereum blockchain. At the core of Fuse is our fork of compound-protocol, and on top of Fuse is fuse-contracts, containing our pool deployer, directory, lens, liquidator, and oracles. A high-level overview of how Fuse works is available in CONCEPT.md. Find out more about Fuse and Rari Capital at rari.capital.
We, as well as others, had success using Truffle on Node.js v12.18.2 with the latest version of NPM.
To install the latest version of Truffle: npm install -g truffle
Though the latest version of Truffle should work, to compile, deploy, and test our contracts, we used Truffle v5.1.45 (which should use solc version 0.6.12+commit.27d51765.Emscripten.clang and Web3.js v1.2.1).
To install all our dependencies: npm install
npm run compile
In .env, set DEVELOPMENT_ADDRESS=0x45D54B22582c79c8Fb8f4c4F2663ef54944f397a to test deployment and run automated tests.
If you are upgrading from v1.1.5, set UPGRADE_FROM_LAST_VERSION=1 to enable upgrading.
To test the contracts, first fork the Ethereum mainnet. Begin by configuring DEVELOPMENT_WEB3_PROVIDER_URL_TO_BE_FORKED in .env (set to any mainnet Web3 HTTP provider JSON-RPC URL; we use a local geth instance, specifically a light client started with geth --syncmode light --rpc --rpcapi eth,web3,debug,net; Infura works too, but beware of latency and rate limiting). To start the fork, run npm run ganache. If you would like to change the port, make sure to configure scripts/ganache.js, scripts/test.sh, and the development network in truffle-config.js. Note that you will likely have to regularly restart your fork, especially when forking from a node without archive data or when using live 0x API responses to make currency exchanges.
To deploy the contracts to your private mainnet fork: truffle migrate --network development --skip-dry-run --reset
To run automated tests on the contracts on your private mainnet fork, run npm test (which runs npm run ganache in the background for you).
In .env, configure LIVE_DEPLOYER_ADDRESS, LIVE_DEPLOYER_PRIVATE_KEY, LIVE_WEB3_PROVIDER_URL, LIVE_GAS_PRICE (ideally, use the "fast" price listed by ETH Gas Station), and LIVE_OWNER to deploy to the mainnet.
If you are upgrading from v1.1.5, set UPGRADE_FROM_LAST_VERSION=1 to enable upgrading.
Then, migrate: truffle migrate --network live
See LICENSE.
Fuse's smart contracts are developed by David Lucid of Rari Capital. Find out more about Rari Capital at rari.capital.