Getting Started

First rename the .env.example file in this directory to .env. Replace the API keys as needed.

After adding your api keys, run the following command from your terminal.

source .env

This command allows brownie config to access your environment variables.

Scripts to AAVE Token balances

Run the following command to get token balances for all aave tokens in your account.

brownie run scripts/aave/aave_balances.py

Output:

Brownie v1.19.1 - Python development framework for Ethereum
RushProject is the active project.
Running 'scripts/aave/aave_balances.py::main'...
Tokens in Account ==================================================================================================== index    Token Name    balance                    address 0        AAVE          100000000000000000000      0x63242B9Bd3C22f18706d5c4E627B4735973f1f07 1        DAI           10000000000000000000000    0xDF1742fE5b0bFc12331D8EAec6b478DfDbD31464 2        LINK          1000000000000000000000     0x07C725d58437504CA5f814AE406e70E21C5e8e9e 3        EURS          1000000                    0xaA63E0C86b531E2eDFE9F91F6436dF20C301963D 4        USDC          10000000000                0xA2025B15a1757311bfD68cb14eaeFCc237AF5b43 5        USDT          10000000000                0xC2C527C0CACF457746Bd31B2a698Fe89de2b6d49 6        WETH          0                          0x2e3A2fb8473316A02b8A297B982498E661E1f6f5 7        WBTC          200000000                  0x8869DFd060c682675c2A8aE5B21F2cF738A0E3CE
Interest aTokens in Account ==================================================================================================== index    Token Name    balance      address 0        aAAVE         0            0xC4bf7684e627ee069e9873B70dD0a8a1241bf72c 1        aDAI          0            0x310839bE20Fc6a8A89f33A59C7D5fC651365068f 2        aLINK         0            0x6A639d29454287B3cBB632Aa9f93bfB89E3fd18f 3        aEURS         0            0xc31E63CB07209DFD2c7Edb3FB385331be2a17209 4        aUSDC         0            0x1Ee669290939f8a8864497Af3BC83728715265FF 5        aUSDT         0            0x73258E6fb96ecAc8a979826d503B45803a382d68 6        aWETH         0            0x27B4692C93959048833f40702b22FE3578E77759 7        aWBTC         200000000    0xc0ac343EA11A8D05AAC3c5186850A659dD40B81B
Stable Debt Tokens in Account ==================================================================================================== index    Token Name        balance    address 0        stableDebtAAVE    0          0x4a8aF512B73Fd896C8877cE0Ebed19b0a11B593C 1        stableDebtDAI     0          0xbaBd1C3912713d598CA2E6DE3303fC59b19d0B0F 2        stableDebtLINK    0          0x4f094AB301C8787F0d06753CA3238bfA9CFB9c91 3        stableDebtEURS    0          0x512ad2D2fb3Bef82ca0A15d4dE6544246e2D32c7 4        stableDebtUSDC    0          0xF04958AeA8b7F24Db19772f84d7c2aC801D9Cf8b 5        stableDebtUSDT    0          0x7720C270Fa5d8234f0DFfd2523C64FdeB333Fa50 6        stableDebtWBTC    0          0x15FF4188463c69FD18Ea39F68A0C9B730E23dE81 7        stableDebtWETH    0          0xCAF956bD3B3113Db89C0584Ef3B562153faB87D5
Variable Debt Tokens in Account ==================================================================================================== index    Token Name          balance               address 0        variableDebtAAVE    0                     0xad958444c255a71C659f7c30e18AFafdE910EB5a 1        variableDebtDAI     0                     0xEa5A7CB3BDF6b2A8541bd50aFF270453F1505A72 2        variableDebtLINK    0                     0x593D1bB0b6052FB6c3423C42FA62275b3D95a943 3        variableDebtEURS    0                     0x257b4a23b3026E04790c39fD3Edd7101E5F31192 4        variableDebtUSDC    0                     0x3e491EB1A98cD42F9BBa388076Fd7a74B3470CA0 5        variableDebtUSDT    0                     0x45c3965f6FAbf2fB04e3FE019853813B2B7cC3A3 6        variableDebtWBTC    0                     0x480B8b39d1465b8049fbf03b8E0a072Ab7C9A422 7        variableDebtWETH    206270138356159747    0x2b848bA14583fA79519Ee71E7038D0d1061cd0F1

If you set up your .env you should see this from your terminal.

Deploying Flashloan Contracts

Keep in mind that all the scripts you will be running for this demo are found in /scripts/aave directory. Read through them to see what they are doing.

The following script will deploy two flashloan contracts. One will be used to flashloan one token at a time SimpleFlashLoan, the other will be used to combine multiple tokens in one flashloan transaction FlashLoan.

brownie run scripts/aave/deploy_flashloan.py

Ouput:

Brownie v1.19.1 - Python development framework for Ethereum
RushProject is the active project.
Running 'scripts/aave/deploy_flashloan.py::main'... Deploying Simple Rush flashloan receiver contract ... =============================================== Transaction sent: 0x0a39f260819c1e3a9d71010ccc64ba9bddc4f2d677d0d94b67c5fac9939cb520   Gas price: 36.756769064 gwei   Gas limit: 541641   Nonce: 90   FlashLoan.constructor confirmed   Block: 8282174   Gas used: 492401 (90.91%)   FlashLoan deployed at: 0xD86bF68ADaf5C6389F1e7379700B01217f3f8129
View contract on Optimism Goerli: https://goerli.etherscan.io/address/0xD86bF68ADaf5C6389F1e7379700B01217f3f8129 Transaction was Mined 
 Tx Hash: 0x0a39f260819c1e3a9d71010ccc64ba9bddc4f2d677d0d94b67c5fac9939cb520 From: 0xFE948CB2122FDD87bAf43dCe8aFa254B1242c199 New FlashLoan address: 0xD86bF68ADaf5C6389F1e7379700B01217f3f8129 Block: 8282174 Gas Used: 492401 / 541641 (90.9%)

Excecuting 1M USDC flashloan transaction

Checout out this transaction. After you deploy your contracts, you are ready to submit transactions. The flashloan contracts will receive and repay your loan. Here's an example:

Run command on terminal.

brownie run scripts/aave/simple_flashloan.py

Output:

Brownie v1.19.1 - Python development framework for Ethereum RushProject is the active project. Running 'scripts/aave/simple_flashloan.py::main'... Transaction sent: 0xe0298379f63293c6bb8ec2bfbd147684c3c73087e5ede19eb7409bcd844fcabb Gas price: 33.986319221 gwei Gas limit: 37951 Nonce: 93 MintableERC20.transfer confirmed Block: 8282256 Gas used: 34501 (90.91%) Transaction sent: 0x58180124eadc669c23c0cfa28053e0c79496b48713f0f160734710ace2b92577 Gas price: 32.188179381 gwei Gas limit: 209116 Nonce: 94 Transaction confirmed Block: 8282267 Gas used: 165364 (79.08%)

Congrats! You have flipped a flashloan. Check it out! https://goerli.etherscan.io/tx/0x58180124eadc669c23c0cfa28053e0c79496b48713f0f160734710ace2b92577

Publish and Verify Contract on Etherscan

Brownie has a simple way to quickly instantly verify your contract on etherscan. Run the following command.

>>> contract = RushFlashLoan.at("0x9db7BcB878E9b3eFDf8FAfcfbbF11a54d80f089c")
>>> contract
<RushFlashLoan Contract '0x9db7BcB878E9b3eFDf8FAfcfbbF11a54d80f089c'>
>>> RushFlashLoan.publish_source(contract)
Verification submitted successfully. Waiting for result...
Verification complete. Result: Pass - Verified
True

Trasaction breakdown

Here the flashloan contract is requesting 1M from the pool provider.

from brownie import accounts, config, network, interface, RushSimpleFlashLoan
from scripts.aave.helperfunctions import getaddressprovider, gettoken, get_account
tx_url = "https://goerli.etherscan.io/tx/{}" pool = interface.IPool(getaddressprovider().getPool()) flashloan_receiver = RushSimpleFlashLoan[len(RushSimpleFlashLoan) -1] usdc = get_token("USDC") usdcamount = 1000_000  10* usdc.decimals()
def run_flashloan():     dev = get_account()     receiver = flashloan_receiver.address     assets = usdc.address     amount = usdc_amount     # 'flashLoanSimple': "0x42b0b77c"     params = "0x42b0b77c"     referral = 0     tx = pool.flashLoanSimple(receiver, assets, amount, params, referral, {"from": dev})

Multi Token Flashloans

If you run this command, you can flashloan over 100M+ in tokens. Checkout this transaction.

brownie run scripts/aave/multi_flashloan.py

Brownie v1.19.1 - Python development framework for Ethereum RushProject is the active project. Running 'scripts/aave/multi_flashloan.py::main'... Transaction sent: 0x310974980351e66748421d1ef01b3d940202090525a99630e03150cb9aeae859 Gas price: 4.924637698 gwei Gas limit: 1578971 Nonce: 83 Transaction confirmed Block: 8265853 Gas used: 1113994 (70.55%) Transaction confirmed Block: 8265853 Gas used: 1113994 (70.55%)

Congrats! You have flipped a flashloan. Check it out! https://goerli.etherscan.io/tx/0x310974980351e66748421d1ef01b3d940202090525a99630e03150cb9aeae859

Go to /scripts/aave/multi_flashloan.py and adjust token amounts. Try it out or yourself.