Running on a Host

{% hint style="info" %} In order to participate in surplus auctions you need to bid with protocol tokens {% endhint %}

Prerequisites

Python 3.6+

Clone:

git clone https://github.com/reflexer-labs/auction-keeper.git
cd auction-keeper
git submodule update --init --recursive

Install:

This creates a virtual environment and installs requirements:

./install.sh

1. Start virtualenv

source _virtualenv/bin/activate

2. Modify model file as needed

A basic surplus auction bidding model can be found in models/surplus_model.py. This model retrieves the latest FLX/USD price from coingecko and will automatically place bids in an auction.

You probably want to modify the following variables in models/surplus_model.py:

STARTING_FLX_MULTIPLIER: The maximum acceptable FLX price to use when bidding. This value will be used when bidding on a new auction with no previous bids. Default: 1.50 meaning the maxiimum price to accept for FLX(in RAI) is 150% of the current FLX/USD market price

MINIMUM_FLX_MULTIPLIER: The minimum acceptable FLX price to use when bidding. Default: 1.10 meaning the minimum price to accept for FLX(in RAI) is 110% of the current FLX/USD market price

MY_BID_INCREASE: The amount of bid increase(in FLX) to make when outbidding another bidder. If value is less than the auction house' bidIncrease, then it will use the auction house setting. Example: A value of 1.10 will create bid increases of 10%. Note: Current bidIncrease on mainnet is 1.03. Default: 1.03

Ensure script is executable

chmod +x surplus_model.py

For more information about bidding models, see Bidding Models

3. Modify keeper run file

Modify the following variables in run_surplus_keeper_host.sh

KEEPER_ADDRESS - the keeper's address. It should be in checksummed format (not lowercase).

ETH_RPC_URL - the URL of your ethereum RPC connection

KEYSTORE_FILE - your Ethereum UTC JSON keystore filename

For more information about this keystore format and how to generate them, check:

• Ethereum UTC / JSON Wallet Encryption
• keythereum

GAS_MAXIMUM -maximum gas price, in GWEI

Ensure script is executable

chmod +x run_surplus_keeper_host.sh

4. Start the keeper and enter your keystore file password

./run_surplus_keeper_host.sh

$ ./run_surplus_keeper_host.sh
Password for /keystore/key.json:

Surplus Auction Output

Start a Surplus Auction

If enough surplus exists in the system, the surplus auction-keeper will call auctionSurplus to start a surplus auction.

2021-01-19 21:15:20,644 INFO     Initiating a surplus auction with coin balance=857.460939042493680361118426229210746756033227844
2021-01-19 21:15:21,317 INFO     Sent transaction AccountingEngine('0x73EC2a627655134886477D10A41275f54556E0e2').auctionSurplus() with nonce=771, gas=290341, gas_price=3000000000 (tx_hash=0x67fdeda8c2dedf5ba05cecf4184e38f3f0353c750a5f466ebf340730e0aa330e)

Bid on a Surplus Auction

If the surplus auction-keeper has FLX, it will bid on surplus auctions by calling increaseBidSize

2021-01-19 21:15:33,578 INFO     Sending new bid @100.000000000000000000 for auction 16
2021-01-19 21:15:33,688 INFO     Sent transaction PreSettlementSurplusAuctionHouse('0xE04ccD802E5e37bE1A64036ce8E7e514E4DBE475').increaseBidSize(16, 2000000000000000000000000000000000000000000000, 20000000000000000) with nonce=773, gas=214285, gas_price=3000000000

Full Log Output

2021-01-19 21:15:07,178 INFO     Keeper connected to RPC connection https://myparitynode.com
2021-01-19 21:15:07,179 INFO     Keeper operating as 0xdD1693BD8E307eCfDbe51D246562fc4109f871f8
2021-01-19 21:15:07,203 INFO     Executing keeper startup logic
2021-01-19 21:15:08,241 INFO     Checking if internal system coin balance needs to be rebalanced
2021-01-19 21:15:08,274 INFO     Joining 1000.613947077334748390 system coin to the SAFE Engine
2021-01-19 21:15:08,334 INFO     Sent transaction <pyflex.gf.CoinJoin object at 0x7fed8cc27208>.join('0xdD1693BD8E307eCfDbe51D246562fc4109f871f8', 10006139470773347483
90) with nonce=770, gas=159975, gas_price=3000000000 (tx_hash=0x996585d78c2ee40536cb575be0492c888e1603dad01b571ec805ad5e3bde231f)
2021-01-19 21:15:12,496 INFO     Transaction <pyflex.gf.CoinJoin object at 0x7fed8cc27208>.join('0xdD1693BD8E307eCfDbe51D246562fc4109f871f8', 1000613947077334748390) w
as successful (tx_hash=0x996585d78c2ee40536cb575be0492c888e1603dad01b571ec805ad5e3bde231f)
2021-01-19 21:15:12,506 INFO     Prot balance is 4.800000000000000000
2021-01-19 21:15:12,507 INFO     Keeper will perform the following operation(s) in parallel:
2021-01-19 21:15:12,507 INFO     --> Check thresholds in Accounting Engine Contract and start new surplus auctions once reached
2021-01-19 21:15:12,507 INFO     --> Check all auctions being monitored and evaluate bidding opportunity every 4.0 seconds
2021-01-19 21:15:12,508 INFO     --> Check all auctions and settle for 0xdD1693BD8E307eCfDbe51D246562fc4109f871f8
2021-01-19 21:15:12,511 INFO     Keeper will use Node gas price (currently 3.0 Gwei, changes over time) and will multiply by 1.125 every 30s to a maximum of 2000.0 Gwe
i for transactions and bids unless model instructs otherwise
2021-01-19 21:15:12,512 INFO     Watching for new blocks
2021-01-19 21:15:12,514 INFO     Started 2 timer(s)
2021-01-19 21:15:20,644 INFO     Initiating a surplus auction with coin balance=857.460939042493680361118426229210746756033227844
2021-01-19 21:15:21,317 INFO     Sent transaction AccountingEngine('0x73EC2a627655134886477D10A41275f54556E0e2').auctionSurplus() with nonce=771, gas=290341, gas_price=3000000000 (tx_hash=0x67fdeda8c2dedf5ba05cecf4184e38f3f0353c750a5f466ebf340730e0aa330e)
2021-01-19 21:15:29,370 INFO     Transaction AccountingEngine('0x73EC2a627655134886477D10A41275f54556E0e2').auctionSurplus() was successful (tx_hash=0x67fdeda8c2dedf5ba05cecf4184e38f3f0353c750a5f466ebf340730e0aa330e)
2021-01-19 21:15:29,641 INFO     Started monitoring auction #16
2021-01-19 21:15:29,642 INFO     Instantiated model using process '/models/surplus_model.sh --id 16 --surplus_auction_house 0xE04ccD802E5e37bE1A64036ce8E7e514E4DBE475'
2021-01-19 21:15:29,653 INFO     Process '/models/surplus_model.sh --id 16 --surplus_auction_house 0xE04ccD802E5e37bE1A64036ce8E7e514E4DBE475' (pid #29) started
2021-01-19 21:15:29,675 INFO     Checked auctions 0 to 16 in 0 seconds
2021-01-19 21:15:32,738 INFO     Initiating a surplus auction with coin balance=855.460939042493680361118426229210746756033227844
2021-01-19 21:15:33,430 INFO     Sent transaction AccountingEngine('0x73EC2a627655134886477D10A41275f54556E0e2').auctionSurplus() with nonce=772, gas=275341, gas_price=3000000000 (tx_hash=0xe00e3bbeeb12c23d13c52a34bbf2f5457d2ea9ae513baffd8d65133adba7b19d)
2021-01-19 21:15:33,578 INFO     Sending new bid @100.000000000000000000 for auction 16
2021-01-19 21:15:33,688 INFO     Sent transaction PreSettlementSurplusAuctionHouse('0xE04ccD802E5e37bE1A64036ce8E7e514E4DBE475').increaseBidSize(16, 2000000000000000000000000000000000000000000000, 20000000000000000) with nonce=773, gas=214285, gas_price=3000000000 (tx_hash=0x1a6e219ba11bc300e671703ae73ff5cc7f36e4be0d56fd7751c4bb24a3628106)
2021-01-19 21:15:41,040 INFO     Transaction AccountingEngine('0x73EC2a627655134886477D10A41275f54556E0e2').auctionSurplus() was successful (tx_hash=0xe00e3bbeeb12c23d13c52a34bbf2f5457d2ea9ae513baffd8d65133adba7b19d)