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* Add 'InterestFactor' to CDP type (#734) * update cdp type to include interest factor * fix build * Add cdp accumulator methods (#735) * remame fees to interest * add accumulate interest method * add basic test * add note * address review comments * update tests * Add sync cdp interest method (#737) * remame fees to interest * add accumulate interest method * add basic test * add note * address review comments * update tests * remove old fee functions * add method to synchronize cdp interest * add multi-cdp tests * add test with many blocks * add test for interest getter * address review comments * calculate time difference then convert to seconds * fix: update collateral index when syncing interest * fix: differentiate between case when apy is zero and all fees are being rounded to zero * fix: round time difference properly * update cdp genesis state and migrations (#738) * remame fees to interest * add accumulate interest method * add basic test * add note * address review comments * update tests * remove old fee functions * add method to synchronize cdp interest * add multi-cdp tests * add test with many blocks * add test for interest getter * update cdp genesis state and migrations * address review comments * calculate time difference then convert to seconds * fix: update collateral index when syncing interest * fix: differentiate between case when apy is zero and all fees are being rounded to zero * fix: simplify add/remove/update collateral index * update genesis state to include total principal amounts * update migration * Delete kava-4-cdp-state-block-500000.json * Add cdp liquidations by external keeper (#750) * feat: split liquidations between external keepers and automated begin blocker * address review comments * USDX incentive accumulators (#752) * feat: split liquidations between external keepers and automated begin blocker * wip: refactor usdx minting incentives to use accumulators/hooks * wip: refactor usdx minting claim object * feat: use accumulators/hooks for usdx minting rewards * fix: get tests passing * fix: don't create claim objects unless that cdp type is eligable for rewards * add begin blocker * update client * cleanup comments/tests * update querier * address review comments * fix: check for division by zero * address review comments * run hook before interest is synced * Remove savings rate (#764) * remove savings rate * remove savings rate from debt param * update migrations * address review comments * Add usdx incentives calculation test (#765) * add usdx incentive calculation test * update reward calculation * add allowable error to test criteria * Update x/incentive/keeper/rewards_test.go Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * fix: remove old fields from test genesis state Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com>
79 lines
2.4 KiB
Markdown
79 lines
2.4 KiB
Markdown
<!--
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order: 2
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-->
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# State
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For detail on the state tracked by the cdp module see the types package. In particular [keys.go](../types/keys.go) describes how state is stored in the key-value store.
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## Module Accounts
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The cdp module account controls two module accounts:
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**CDP Account:** Stores the deposited cdp collateral, and the debt coins for the debt in all the cdps.
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**Liquidator Account:** Stores debt coins that have been seized by the system, and any stable asset that has been raised through auctions.
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## CDP
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A CDP is a struct representing a debt position owned by one address. It has one collateral type and records the debt that has been drawn and how much fees should be repaid.
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Only an owner is authorized to draw or repay debt, but anyone can deposit collateral to a CDP. Deposits are scoped per address and are recorded separately in `Deposit` types. Depositors are free to withdraw their collateral provided it does not put the CDP below the liquidation ratio.
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The CDP's collateral always equal to the total of the deposits.
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```go
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type CDP struct {
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ID uint64
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Owner sdk.AccAddress
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Type string
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Collateral sdk.Coin
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Principal sdk.Coin
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AccumulatedFees sdk.Coin
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FeesUpdated time.Time
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InterestFactor sdk.Dec
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}
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```
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CDPs are stored with three database indexes for faster lookup:
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- by collateral ratio - to look up cdps that are close to the liquidation ratio
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- by collateral denom - to look up cdps with a particular collateral asset
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- by owner index - to look up cdps that an address is the owner of
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## Deposit
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A Deposit is a struct recording collateral added to a CDP by one address. The address only has authorization to change their deposited amount (provided it does not put the CDP below the liquidation ratio).
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```go
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type Deposit struct {
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CdpID uint64
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Depositor sdk.AccAddress
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Amount sdk.Coin
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}
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```
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## Params
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Module parameters controlled by governance. See [Parameters](04_params.md) for details.
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## NextCDPID
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A global counter used to create unique CDP ids.
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## DebtDenom
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The name of the internal debt coin. Its value can be configured at genesis.
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## GovDenom
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The name of the internal governance coin. Its value can be configured at genesis.
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## Total Principle
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Sum of all non seized debt plus accumulated fees.
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## Previous Savings Distribution Time
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A record of the last block time when the savings rate was distributed
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