0g-chain/migrate/utils/periodic_vesting.go

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package utils
import (
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
v040vesting "github.com/cosmos/cosmos-sdk/x/auth/vesting/types"
)
// ResetPeriodicVestingAccount resets a periodic vesting account to a new start
// time. The account is modified in place, and vesting periods before the new
// start time are removed from the account.
func ResetPeriodicVestingAccount(vacc *v040vesting.PeriodicVestingAccount, startTime time.Time) {
currentPeriod := vacc.StartTime
newOriginalVesting := sdk.Coins{}
newStartTime := startTime.Unix()
newPeriods := v040vesting.Periods{}
for _, period := range vacc.VestingPeriods {
currentPeriod = currentPeriod + period.Length
// Periods less than the newStartTime are still vesting,
// so adjust their length and add them to the newPeriods
if newStartTime < currentPeriod {
// adjust the length of the first vesting period
// to be relative to the new start time
if len(newPeriods) == 0 {
period.Length = currentPeriod - newStartTime
}
newOriginalVesting = newOriginalVesting.Add(period.Amount...)
newPeriods = append(newPeriods, period)
}
}
// If the new original vesting amount is less than the delegated vesting amount, set delegated vesting
// to the new original vesting amount, and add the difference to the delegated free amount
for _, delegatedVestingCoin := range vacc.DelegatedVesting {
newDelegatedVestingCoin := sdk.NewCoin(delegatedVestingCoin.Denom, sdk.MinInt(delegatedVestingCoin.Amount, newOriginalVesting.AmountOf(delegatedVestingCoin.Denom)))
delegationAdjustment := delegatedVestingCoin.Sub(newDelegatedVestingCoin)
if !delegationAdjustment.IsZero() {
vacc.DelegatedVesting = vacc.DelegatedVesting.Sub(sdk.NewCoins(delegationAdjustment))
vacc.DelegatedFree = vacc.DelegatedFree.Add(delegationAdjustment)
}
}
// update vesting account
vacc.StartTime = newStartTime
vacc.OriginalVesting = newOriginalVesting
vacc.VestingPeriods = newPeriods
// ensure end time is >= start time
if vacc.StartTime >= vacc.EndTime {
vacc.EndTime = vacc.StartTime
}
}