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handler_shares.go
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/
handler_shares.go
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package staking
import (
"time"
sdk "github.com/okex/exchain/libs/cosmos-sdk/types"
"github.com/okex/exchain/x/staking/keeper"
"github.com/okex/exchain/x/staking/types"
)
func handleMsgBindProxy(ctx sdk.Context, msg types.MsgBindProxy, k keeper.Keeper) (*sdk.Result, error) {
delegator, found := k.GetDelegator(ctx, msg.DelAddr)
if !found || delegator.Tokens.IsZero() {
return types.ErrNoDelegationToAddShares(msg.DelAddr.String()).Result()
}
if !delegator.Shares.Equal(sdk.ZeroDec()) {
return types.ErrAlreadyAddedShares(delegator.DelegatorAddress.String()).Result()
}
// proxy must delegated
proxyDelegator, found := k.GetDelegator(ctx, msg.ProxyAddress)
if !found || proxyDelegator.Tokens.IsZero() {
return types.ErrProxyNotFound(msg.ProxyAddress.String()).Result()
}
// target delegator must reg as a proxy
if !proxyDelegator.IsProxy {
return types.ErrProxyNotFound(msg.ProxyAddress.String()).Result()
}
// double proxy is denied on okexchain
if delegator.IsProxy {
return types.ErrDoubleProxy(delegator.DelegatorAddress.String()).Result()
}
// same proxy, only update shares
if delegator.HasProxy() && delegator.ProxyAddress.Equals(proxyDelegator.DelegatorAddress) {
updateTokens := proxyDelegator.TotalDelegatedTokens.Add(proxyDelegator.Tokens)
if err := k.UpdateShares(ctx, proxyDelegator.DelegatorAddress, updateTokens); err != nil {
return types.ErrInvalidDelegation(proxyDelegator.DelegatorAddress.String()).Result()
}
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
// unbind from the original proxy
if len(delegator.ProxyAddress) != 0 {
if sdkErr := unbindProxy(ctx, delegator.DelegatorAddress, k); sdkErr != nil {
return nil, sdkErr
}
}
// bind proxy relationship
delegator.BindProxy(msg.ProxyAddress)
// update proxy's shares weight
proxyDelegator.TotalDelegatedTokens = proxyDelegator.TotalDelegatedTokens.Add(delegator.Tokens)
k.SetDelegator(ctx, delegator)
k.SetDelegator(ctx, proxyDelegator)
k.SetProxyBinding(ctx, proxyDelegator.DelegatorAddress, delegator.DelegatorAddress, false)
finalTokens := proxyDelegator.TotalDelegatedTokens.Add(proxyDelegator.Tokens)
if err := k.UpdateShares(ctx, proxyDelegator.DelegatorAddress, finalTokens); err != nil {
return types.ErrInvalidDelegation(proxyDelegator.DelegatorAddress.String()).Result()
}
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func unbindProxy(ctx sdk.Context, delAddr sdk.AccAddress, k keeper.Keeper) error {
delegator, found := k.GetDelegator(ctx, delAddr)
if !found {
return types.ErrNoDelegationToAddShares(delAddr.String())
}
proxyDelegator, found := k.GetDelegator(ctx, delegator.ProxyAddress)
if !found {
return types.ErrProxyNotFound(delAddr.String())
}
// update proxy's shares weight
if k.UpdateProxy(ctx, delegator, delegator.Tokens.Mul(sdk.NewDec(-1))) != nil {
return types.ErrInvalidDelegation(delAddr.String())
}
// unbind proxy relationship
delegator.UnbindProxy()
k.SetDelegator(ctx, delegator)
k.SetProxyBinding(ctx, proxyDelegator.DelegatorAddress, delegator.DelegatorAddress, true)
return nil
}
func handleMsgUnbindProxy(ctx sdk.Context, msg types.MsgUnbindProxy, k keeper.Keeper) (*sdk.Result, error) {
if sdkErr := unbindProxy(ctx, msg.DelAddr, k); sdkErr != nil {
return nil, sdkErr
}
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func regProxy(ctx sdk.Context, proxyAddr sdk.AccAddress, k keeper.Keeper) (*sdk.Result, error) {
// check status
proxy, found := k.GetDelegator(ctx, proxyAddr)
if !found {
return types.ErrNoDelegationToAddShares(proxyAddr.String()).Result()
}
if proxy.IsProxy {
return types.ErrProxyAlreadyExist(proxyAddr.String()).Result()
}
if len(proxy.ProxyAddress) != 0 {
return types.ErrAlreadyBound(proxyAddr.String()).Result()
}
proxy.RegProxy(true)
k.SetDelegator(ctx, proxy)
if k.UpdateShares(ctx, proxy.DelegatorAddress, proxy.Tokens) != nil {
return types.ErrInvalidDelegation(proxy.DelegatorAddress.String()).Result()
}
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func unregProxy(ctx sdk.Context, proxyAddr sdk.AccAddress, k keeper.Keeper) (*sdk.Result, error) {
// check status
proxy, found := k.GetDelegator(ctx, proxyAddr)
if !found {
return types.ErrProxyNotFound(proxyAddr.String()).Result()
}
if !proxy.IsProxy {
return types.ErrProxyNotFound(proxyAddr.String()).Result()
}
proxy.RegProxy(false)
// unreg action, we need to erase all proxy relationship
proxy.TotalDelegatedTokens = sdk.ZeroDec()
k.ClearProxy(ctx, proxy.DelegatorAddress)
k.SetDelegator(ctx, proxy)
if k.UpdateShares(ctx, proxy.DelegatorAddress, proxy.Tokens) != nil {
return types.ErrInvalidDelegation(proxy.DelegatorAddress.String()).Result()
}
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleRegProxy(ctx sdk.Context, msg types.MsgRegProxy, k keeper.Keeper) (*sdk.Result, error) {
if msg.Reg {
return regProxy(ctx, msg.ProxyAddress, k)
}
return unregProxy(ctx, msg.ProxyAddress, k)
}
func handleMsgAddShares(ctx sdk.Context, msg types.MsgAddShares, k keeper.Keeper) (*sdk.Result, error) {
maxValsToAddShares := int(k.ParamsMaxValsToAddShares(ctx))
if len(msg.ValAddrs) == 0 {
return nil, types.ErrEmptyValidators()
} else if len(msg.ValAddrs) > maxValsToAddShares {
return types.ErrExceedValidatorAddrs(maxValsToAddShares).Result()
}
// 0. check whether the delegator has delegation
delegator, found := k.GetDelegator(ctx, msg.DelAddr)
if !found || delegator.Tokens.IsZero() {
return types.ErrNoDelegationToAddShares(msg.DelAddr.String()).Result()
}
if delegator.HasProxy() {
return types.ErrAddSharesDuringProxy(delegator.DelegatorAddress.String(),
delegator.ProxyAddress.String()).Result()
}
// 1. get last validators which were added shares to and existing in the store
lastVals, lastShares := k.GetLastValsAddedSharesExisted(ctx, msg.DelAddr)
// 2. withdraw the shares last time
k.WithdrawLastShares(ctx, msg.DelAddr, lastVals, lastShares)
// 3. get validators to add shares this time (if the validator doesn't exist, return error)
vals, sdkErr := k.GetValidatorsToAddShares(ctx, msg.ValAddrs)
if sdkErr != nil {
return nil, sdkErr
}
if sdkErr = validateSharesAdding(vals); sdkErr != nil {
return nil, sdkErr
}
// 4. get the total amount of self token and delegated token
totalTokens := delegator.Tokens.Add(delegator.TotalDelegatedTokens)
// 4.1 increment validators period
delegatorValAddresses := getValsAddrs(vals)
k.BeforeDelegationCreated(ctx, msg.DelAddr, delegatorValAddresses)
// 5. add shares to the vals this time
shares, sdkErr := k.AddSharesToValidators(ctx, msg.DelAddr, vals, totalTokens)
if sdkErr != nil {
return nil, sdkErr
}
// 6. update the delegator entity for this time
delegator.ValidatorAddresses = delegatorValAddresses
delegator.Shares = shares
k.SetDelegator(ctx, delegator)
// 7. create new delegator starting info
k.AfterDelegationModified(ctx, msg.DelAddr, delegator.ValidatorAddresses)
ctx.EventManager().EmitEvent(buildEventForHandlerAddShares(delegator))
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
// validateSharesAdding gives a quick validity of target validators before shares adding
func validateSharesAdding(vals types.Validators) error {
if len(vals) == 0 {
return types.ErrEmptyValidators()
}
if valAddr, ok := isDismissed(vals); ok {
return types.ErrAddSharesToDismission(valAddr.String())
}
return nil
}
// isDismissed tells whether validator with zero-msd is among the shares adding targets and returns the first dismissed
// validator address
func isDismissed(vals types.Validators) (sdk.ValAddress, bool) {
valsLen := len(vals)
for i := 0; i < valsLen; i++ {
if vals[i].MinSelfDelegation.IsZero() {
return vals[i].OperatorAddress, true
}
}
return nil, false
}
// getValsAddrs gets validator addresses from a set of validator's entities
func getValsAddrs(vals types.Validators) []sdk.ValAddress {
lenVals := len(vals)
valAddrs := make([]sdk.ValAddress, lenVals)
for i := 0; i < lenVals; i++ {
valAddrs[i] = vals[i].OperatorAddress
}
return valAddrs
}
func buildEventForHandlerAddShares(delegator types.Delegator) sdk.Event {
lenAttributes := len(delegator.ValidatorAddresses) + 2
attributes := make([]sdk.Attribute, lenAttributes)
attributes[0] = sdk.NewAttribute(types.AttributeKeyDelegator, delegator.DelegatorAddress.String())
attributes[1] = sdk.NewAttribute(types.AttributeKeyShares, delegator.Shares.String())
for i := 2; i < lenAttributes; i++ {
attributes[i] = sdk.NewAttribute(types.AttributeKeyValidatorToAddShares, delegator.ValidatorAddresses[i-2].String())
}
return sdk.NewEvent(types.EventTypeAddShares, attributes...)
}
func handleMsgDeposit(ctx sdk.Context, msg types.MsgDeposit, k keeper.Keeper) (*sdk.Result, error) {
if msg.Amount.Denom != k.BondDenom(ctx) {
return ErrBadDenom().Result()
}
err := k.Delegate(ctx, msg.DelegatorAddress, msg.Amount)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeDelegate,
sdk.NewAttribute(types.AttributeKeyValidator, msg.DelegatorAddress.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Amount.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgWithdraw(ctx sdk.Context, msg types.MsgWithdraw, k keeper.Keeper) (*sdk.Result, error) {
if msg.Amount.Denom != k.BondDenom(ctx) {
return ErrBadDenom().Result()
}
completionTime, err := k.Withdraw(ctx, msg.DelegatorAddress, msg.Amount)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeUnbond,
sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Amount.String()),
sdk.NewAttribute(types.AttributeKeyCompletionTime, completionTime.Format(time.RFC3339)),
),
})
completionTimeBz := types.ModuleCdc.MustMarshalBinaryLengthPrefixed(completionTime)
return &sdk.Result{Data: completionTimeBz, Events: ctx.EventManager().Events()}, nil
}
func handleMsgDestroyValidator(ctx sdk.Context, msg types.MsgDestroyValidator, k keeper.Keeper) (*sdk.Result, error) {
valAddr := sdk.ValAddress(msg.DelAddr)
// 0.check to see if the validator which belongs to the delegator exists
validator, found := k.GetValidator(ctx, valAddr)
if !found {
return ErrNoValidatorFound(valAddr.String()).Result()
}
completionTime, sdkErr := k.WithdrawMinSelfDelegation(ctx, msg.DelAddr, validator)
if sdkErr != nil {
return nil, sdkErr
}
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeUnbond,
sdk.NewAttribute(sdk.AttributeKeySender, msg.DelAddr.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, validator.GetMinSelfDelegation().String()),
sdk.NewAttribute(types.AttributeKeyCompletionTime, completionTime.Format(time.RFC3339)),
),
})
completionTimeBytes := types.ModuleCdc.MustMarshalBinaryLengthPrefixed(completionTime)
return &sdk.Result{Data: completionTimeBytes, Events: ctx.EventManager().Events()}, nil
}