0g-chain/migrate/v0_15/account.go
Nick DeLuca 63508d79f9
Fix Account Migration for Additive Vesting Periods (#993)
* update acceptance test to fail

* update periodic vesting reset to reflect additive period lengths, not
absolute lengths

* simplify end time logic

* remove log

* test inclusion of v0_15 migration tests
2021-08-16 12:25:15 -06:00

75 lines
2.6 KiB
Go

package v0_15
import (
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
authexported "github.com/cosmos/cosmos-sdk/x/auth/exported"
vesting "github.com/cosmos/cosmos-sdk/x/auth/vesting"
)
// MigrateAccount removes old vesting periods from periodic vesting accounts
// and converts any periodic vesting account with zero periods back to a base account
func MigrateAccount(acc authexported.GenesisAccount, genesisTime time.Time) authexported.GenesisAccount {
if vacc, ok := acc.(*vesting.PeriodicVestingAccount); ok {
ResetPeriodicVestingAccount(vacc, genesisTime)
if genesisTime.Unix() >= vacc.EndTime {
return vacc.BaseVestingAccount.BaseAccount
}
return vacc
}
return acc
}
// 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 *vesting.PeriodicVestingAccount, startTime time.Time) {
currentPeriod := vacc.StartTime
newOriginalVesting := sdk.Coins{}
newStartTime := startTime.Unix()
newPeriods := vesting.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
}
}