/
proxy.go
196 lines (166 loc) · 6.23 KB
/
proxy.go
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package keeper
import (
sdk "github.com/furyaxyz/fuxchain/libs/cosmos-sdk/types"
"github.com/furyaxyz/fuxchain/x/staking/types"
)
// ClearProxy clears the ProxyAddress on the delegator who has bound
func (k Keeper) ClearProxy(ctx sdk.Context, proxyAddr sdk.AccAddress) {
k.IterateProxy(ctx, proxyAddr, true, func(_ int64, delAddr, _ sdk.AccAddress) (stop bool) {
delegator, found := k.GetDelegator(ctx, delAddr)
if found {
delegator.UnbindProxy()
k.SetDelegator(ctx, delegator)
}
return false
})
}
// SetProxyBinding sets or deletes the key of proxy relationship
func (k Keeper) SetProxyBinding(ctx sdk.Context, proxyAddress, delegatorAddress sdk.AccAddress, isRemove bool) {
store := ctx.KVStore(k.storeKey)
key := types.GetProxyDelegatorKey(proxyAddress, delegatorAddress)
if isRemove {
store.Delete(key)
} else {
store.Set(key, []byte(""))
}
}
// IterateProxy iterates all the info between delegator and its proxy
func (k Keeper) IterateProxy(ctx sdk.Context, proxyAddr sdk.AccAddress, isClear bool,
fn func(index int64, delAddr, proxyAddr sdk.AccAddress) (stop bool)) {
store := ctx.KVStore(k.storeKey)
iterator := sdk.KVStorePrefixIterator(store, types.GetProxyDelegatorKey(proxyAddr, []byte{}))
defer iterator.Close()
index := sdk.AddrLen + 1
for i := int64(0); iterator.Valid(); iterator.Next() {
key := iterator.Key()
if stop := fn(i, key[index:], key[1:index]); stop {
break
}
if isClear {
store.Delete(key)
}
i++
}
}
// UpdateShares withdraws and adds shares continuously on the same validator set with different amount of shares
func (k Keeper) UpdateShares(ctx sdk.Context, delAddr sdk.AccAddress, tokens sdk.Dec) error {
// get last validators that were added shares to and existing in the store
vals, lastShares := k.GetLastValsAddedSharesExisted(ctx, delAddr)
if vals == nil {
// if the delegator never adds shares, just pass
return nil
}
delegatorValAddresses := vals.ToValAddresses()
// withdraw delegation rewards, increments period, remove delegator starting info
k.BeforeDelegationSharesModified(ctx, delAddr, delegatorValAddresses)
lenVals := len(vals)
shares := calculateWeight(tokens)
delegator, found := k.GetDelegator(ctx, delAddr)
if !found {
return types.ErrNoDelegatorExisted(delAddr.String())
}
minSelfDelegation := k.ParamsMinSelfDelegation(ctx)
for i := 0; i < lenVals; i++ {
if vals[i].MinSelfDelegation.LT(minSelfDelegation) {
return types.ErrAddSharesToDismission(vals[i].OperatorAddress.String())
}
// 1.delete related store
k.DeleteValidatorByPowerIndex(ctx, vals[i])
// 2.update shares
k.SetShares(ctx, delAddr, vals[i].OperatorAddress, shares)
// 3.update validator
vals[i].DelegatorShares = vals[i].DelegatorShares.Sub(lastShares).Add(shares)
k.SetValidator(ctx, vals[i])
k.SetValidatorByPowerIndex(ctx, vals[i])
}
// update the delegator struct
delegator.Shares = shares
k.SetDelegator(ctx, delegator)
// initialize starting info for a new delegation
k.AfterDelegationModified(ctx, delegator.DelegatorAddress, delegatorValAddresses)
return nil
}
// AddSharesToValidators adds shares to validators and return the amount of the shares
func (k Keeper) AddSharesToValidators(ctx sdk.Context, delAddr sdk.AccAddress, vals types.Validators, tokens sdk.Dec) (
shares types.Shares, sdkErr error) {
lenVals := len(vals)
shares = calculateWeight(tokens)
if sdkErr != nil {
return
}
for i := 0; i < lenVals; i++ {
k.addShares(ctx, delAddr, vals[i], shares)
}
return
}
// WithdrawLastShares withdraws the shares last time from the validators
func (k Keeper) WithdrawLastShares(ctx sdk.Context, delAddr sdk.AccAddress, lastValsAddedSharesTo types.Validators,
lastShares types.Shares) {
lenLastVals := len(lastValsAddedSharesTo)
if lenLastVals > 0 {
// withdraw delegation rewards, remove delegator starting info
k.BeforeDelegationSharesModified(ctx, delAddr, lastValsAddedSharesTo.ToValAddresses())
}
for i := 0; i < lenLastVals; i++ {
k.withdrawShares(ctx, delAddr, lastValsAddedSharesTo[i], lastShares)
}
}
func (k Keeper) withdrawShares(ctx sdk.Context, delAddr sdk.AccAddress, val types.Validator, shares types.Shares) {
// 1.delete shares entity
k.DeleteShares(ctx, val.OperatorAddress, delAddr)
// 2.update validator entity
k.DeleteValidatorByPowerIndex(ctx, val)
// 3.update validator's shares
val.DelegatorShares = val.GetDelegatorShares().Sub(shares)
// 3.check whether the validator should be removed
if val.IsUnbonded() && val.GetMinSelfDelegation().IsZero() && val.GetDelegatorShares().IsZero() {
k.RemoveValidator(ctx, val.OperatorAddress)
return
}
k.SetValidator(ctx, val)
k.SetValidatorByPowerIndex(ctx, val)
}
func (k Keeper) addShares(ctx sdk.Context, delAddr sdk.AccAddress, val types.Validator, shares types.Shares) {
// 1.update shares entity
k.SetShares(ctx, delAddr, val.OperatorAddress, shares)
// 2.update validator entity
k.DeleteValidatorByPowerIndex(ctx, val)
val.DelegatorShares = val.GetDelegatorShares().Add(shares)
k.SetValidator(ctx, val)
k.SetValidatorByPowerIndex(ctx, val)
}
// GetLastValsAddedSharesExisted gets last validators that the delegator added shares to last time
func (k Keeper) GetLastValsAddedSharesExisted(ctx sdk.Context, delAddr sdk.AccAddress) (types.Validators, types.Shares) {
// 1.get delegator entity
delegator, found := k.GetDelegator(ctx, delAddr)
// if not found
if !found {
return nil, sdk.ZeroDec()
}
// 2.get validators that were added shares to and existing in the store
lenVals := len(delegator.ValidatorAddresses)
var vals types.Validators
for i := 0; i < lenVals; i++ {
val, found := k.GetValidator(ctx, delegator.ValidatorAddresses[i])
if found {
// the validator that were added shares to hasn't been removed
vals = append(vals, val)
}
}
return vals, delegator.Shares
}
// GetValidatorsToAddShares gets the validators from their validator addresses
func (k Keeper) GetValidatorsToAddShares(ctx sdk.Context, valAddrs []sdk.ValAddress) (types.Validators, error) {
lenVals := len(valAddrs)
vals := make(types.Validators, lenVals)
for i := 0; i < lenVals; i++ {
val, found := k.GetValidator(ctx, valAddrs[i])
if found {
// get the validator hasn't been removed
vals[i] = val
} else {
return nil, types.ErrNoValidatorFound(valAddrs[i].String())
}
}
return vals, nil
}