EthAnchor Account Contract

EthAnchor Account contracts are user-specifically generated Ethereum smart contracts for interacting with Anchor Protocol from the Ethereum blockchain.
EthAnchor Account contracts only allow a single operation at a time, tracked by the ActionFlag state.
Events
InitDeposit
Emitted when wrapped UST is requested for deposit to Anchor via initDepositStable.
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event InitDeposit(address indexed sender, uint256 amount, bytes32 to);
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FinishDeposit
Emitted when wrapped aUST is claimed from Anchor via finishDepositStable.
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event FinishDeposit(address indexed sender);
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InitRedemption
Emitted when wrapped aUST is requested for redemption to Anchor via initRedeemStable.
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event InitRedemption(address indexed sender, uint256 amount, bytes32 to);
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FinishRedemption
Emitted when wrapped UST is claimed from Anchor via finishRedeemStable.
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event FinishRedemption(address indexed sender);
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FailureReported
Emitted when aUST redemption fails due to a lack of stablecoin liquidity in the money market.
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event FailureReported(); 
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EmergencyWithdrawActivated
Emitted when emergencyWithdraw is activated for withdrawing ERC20 tokens from the contract.
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event EmergencyWithdrawActivated(address tokenAddress, uint256 amount);
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Functions
initDepositStable
Accepts new wrapped UST deposits.
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function initDepositStable(uint256 amount) public onlyAuthSender checkInit terraAddressSet 
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Prerequisite: must have called approve() for an allowance of at least amount for the wrapped UST contract, ActionFlag is set to false
Accepts: amount - how much UST to deposit
Updates: ActionFlag to true
Emits: InitDeposit
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finishDepositStable
Claims resulting wrapped aUST after a successful deposit.
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function finishDepositStable() function initDepositStable(uint256 amount) public onlyAuthSender checkInit terraAddressSet 
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Prerequisite: aUST balance of account-specific endpoint contract must be greater than 0, ActionFlag is set to true
Updates: sets ActionFlag to false, transfers all aUST balances from contract address to tx.origin
Emits: FinishDeposit
 
initRedeemStable
Accepts wrapped aUST for redemption back to wrapped UST.
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function initRedeemStable(uint256 amount) public onlyAuthSender checkInit terraAddressSet 
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Prerequisite: must have called approve() for an allowance of at least amount for the wrapped aUST contract, ActionFlag is set to false
Accepts: amount - how much aUST to redeem back to UST
Updates: ActionFlag to trueIMPORTANT: aUST redemptions may fail if UST liquidity is low in the Terra side Anchor money market → be sure to check account contract balances & initRedeemStable() success parameters.
Emits: InitRedemption
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finishRedeemStable
Claims resulting wrapped UST after withdrawal.
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function finishRedeemStable() public onlyAuthSender checkFinish terraAddressSet 
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Prerequisite: UST balance of account-specific endpoint contract must be greater than 0, ActionFlag is set to true
Updates: sets ActionFlag to false, transfers all UST balances from contract address to tx.origin
Emits: FinishRedemption
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reportFailure
Reports any failures in-between init operations to allow the EthAnchor operator to return any funds, and reset ActionFlag back to false. Only callable by contract owner.
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function reportFailure() public onlyController checkFinish 
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Prerequisite: UST balance of account-specific endpoint contract must be 0, ActionFlag is set to true
Updates: sets ActionFlag to false
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emergencyWithdraw
Withdraws all balances of any ERC20 token from the contract. Only callable by contract owner.
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function emergencyWithdraw(address _tokenAddress) public onlyController 
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Prerequisite: ERC20 token balances of token contract _tokenAddress at contract address must be greater than 0
Updates: transfers all ERC20 token balances of token contract _tokenAddress back to msg.sender