2020-10-16 07:53:49 -07:00
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package keeper
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import (
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"context"
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"time"
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metrics "github.com/armon/go-metrics"
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tmstrings "github.com/tendermint/tendermint/libs/strings"
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2020-10-19 06:04:55 -07:00
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cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
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2020-10-16 07:53:49 -07:00
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"github.com/cosmos/cosmos-sdk/telemetry"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/cosmos/cosmos-sdk/x/staking/types"
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)
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type msgServer struct {
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Keeper
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}
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// NewMsgServerImpl returns an implementation of the bank MsgServer interface
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// for the provided Keeper.
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func NewMsgServerImpl(keeper Keeper) types.MsgServer {
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return &msgServer{Keeper: keeper}
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}
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var _ types.MsgServer = msgServer{}
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func (k msgServer) CreateValidator(goCtx context.Context, msg *types.MsgCreateValidator) (*types.MsgCreateValidatorResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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valAddr, err := sdk.ValAddressFromBech32(msg.ValidatorAddress)
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if err != nil {
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return nil, err
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}
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// check to see if the pubkey or sender has been registered before
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if _, found := k.GetValidator(ctx, valAddr); found {
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return nil, types.ErrValidatorOwnerExists
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}
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2020-10-19 06:04:55 -07:00
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pk, ok := msg.Pubkey.GetCachedValue().(cryptotypes.PubKey)
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if !ok {
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return nil, sdkerrors.Wrapf(sdkerrors.ErrInvalidType, "Expecting crypto.PubKey, got %T", pk)
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2020-10-16 07:53:49 -07:00
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}
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if _, found := k.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(pk)); found {
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return nil, types.ErrValidatorPubKeyExists
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}
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bondDenom := k.BondDenom(ctx)
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if msg.Value.Denom != bondDenom {
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return nil, sdkerrors.Wrapf(types.ErrBadDenom, "got %s, expected %s", msg.Value.Denom, bondDenom)
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}
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if _, err := msg.Description.EnsureLength(); err != nil {
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return nil, err
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}
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cp := ctx.ConsensusParams()
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if cp != nil && cp.Validator != nil {
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if !tmstrings.StringInSlice(pk.Type(), cp.Validator.PubKeyTypes) {
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return nil, sdkerrors.Wrapf(
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types.ErrValidatorPubKeyTypeNotSupported,
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"got: %s, expected: %s", pk.Type(), cp.Validator.PubKeyTypes,
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)
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}
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}
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2020-10-23 05:07:52 -07:00
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validator, err := types.NewValidator(valAddr, pk, msg.Description)
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if err != nil {
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return nil, err
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}
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2020-10-16 07:53:49 -07:00
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commission := types.NewCommissionWithTime(
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msg.Commission.Rate, msg.Commission.MaxRate,
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msg.Commission.MaxChangeRate, ctx.BlockHeader().Time,
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)
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validator, err = validator.SetInitialCommission(commission)
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if err != nil {
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return nil, err
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}
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delegatorAddress, err := sdk.AccAddressFromBech32(msg.DelegatorAddress)
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if err != nil {
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return nil, err
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}
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validator.MinSelfDelegation = msg.MinSelfDelegation
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k.SetValidator(ctx, validator)
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k.SetValidatorByConsAddr(ctx, validator)
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k.SetNewValidatorByPowerIndex(ctx, validator)
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// call the after-creation hook
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k.AfterValidatorCreated(ctx, validator.GetOperator())
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// move coins from the msg.Address account to a (self-delegation) delegator account
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// the validator account and global shares are updated within here
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// NOTE source will always be from a wallet which are unbonded
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_, err = k.Keeper.Delegate(ctx, delegatorAddress, msg.Value.Amount, types.Unbonded, validator, true)
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if err != nil {
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return nil, err
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}
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeCreateValidator,
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sdk.NewAttribute(types.AttributeKeyValidator, msg.ValidatorAddress),
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sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Value.Amount.String()),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress),
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),
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})
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return &types.MsgCreateValidatorResponse{}, nil
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}
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func (k msgServer) EditValidator(goCtx context.Context, msg *types.MsgEditValidator) (*types.MsgEditValidatorResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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valAddr, err := sdk.ValAddressFromBech32(msg.ValidatorAddress)
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if err != nil {
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return nil, err
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}
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// validator must already be registered
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validator, found := k.GetValidator(ctx, valAddr)
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if !found {
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return nil, types.ErrNoValidatorFound
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}
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// replace all editable fields (clients should autofill existing values)
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description, err := validator.Description.UpdateDescription(msg.Description)
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if err != nil {
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return nil, err
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}
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validator.Description = description
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if msg.CommissionRate != nil {
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commission, err := k.UpdateValidatorCommission(ctx, validator, *msg.CommissionRate)
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if err != nil {
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return nil, err
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}
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// call the before-modification hook since we're about to update the commission
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k.BeforeValidatorModified(ctx, valAddr)
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validator.Commission = commission
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}
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if msg.MinSelfDelegation != nil {
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if !msg.MinSelfDelegation.GT(validator.MinSelfDelegation) {
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return nil, types.ErrMinSelfDelegationDecreased
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}
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if msg.MinSelfDelegation.GT(validator.Tokens) {
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return nil, types.ErrSelfDelegationBelowMinimum
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}
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validator.MinSelfDelegation = (*msg.MinSelfDelegation)
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}
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k.SetValidator(ctx, validator)
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeEditValidator,
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sdk.NewAttribute(types.AttributeKeyCommissionRate, validator.Commission.String()),
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sdk.NewAttribute(types.AttributeKeyMinSelfDelegation, validator.MinSelfDelegation.String()),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, msg.ValidatorAddress),
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),
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})
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return &types.MsgEditValidatorResponse{}, nil
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}
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func (k msgServer) Delegate(goCtx context.Context, msg *types.MsgDelegate) (*types.MsgDelegateResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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valAddr, valErr := sdk.ValAddressFromBech32(msg.ValidatorAddress)
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if valErr != nil {
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return nil, valErr
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}
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validator, found := k.GetValidator(ctx, valAddr)
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if !found {
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return nil, types.ErrNoValidatorFound
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}
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delegatorAddress, err := sdk.AccAddressFromBech32(msg.DelegatorAddress)
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if err != nil {
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return nil, err
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}
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bondDenom := k.BondDenom(ctx)
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if msg.Amount.Denom != bondDenom {
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return nil, sdkerrors.Wrapf(types.ErrBadDenom, "got %s, expected %s", msg.Amount.Denom, bondDenom)
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}
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// NOTE: source funds are always unbonded
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_, err = k.Keeper.Delegate(ctx, delegatorAddress, msg.Amount.Amount, types.Unbonded, validator, true)
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if err != nil {
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return nil, err
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}
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defer func() {
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telemetry.IncrCounter(1, types.ModuleName, "delegate")
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telemetry.SetGaugeWithLabels(
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[]string{"tx", "msg", msg.Type()},
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float32(msg.Amount.Amount.Int64()),
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[]metrics.Label{telemetry.NewLabel("denom", msg.Amount.Denom)},
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)
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}()
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeDelegate,
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sdk.NewAttribute(types.AttributeKeyValidator, msg.ValidatorAddress),
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sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Amount.Amount.String()),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress),
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),
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})
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return &types.MsgDelegateResponse{}, nil
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}
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func (k msgServer) BeginRedelegate(goCtx context.Context, msg *types.MsgBeginRedelegate) (*types.MsgBeginRedelegateResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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valSrcAddr, err := sdk.ValAddressFromBech32(msg.ValidatorSrcAddress)
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if err != nil {
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return nil, err
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}
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delegatorAddress, err := sdk.AccAddressFromBech32(msg.DelegatorAddress)
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if err != nil {
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return nil, err
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}
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shares, err := k.ValidateUnbondAmount(
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ctx, delegatorAddress, valSrcAddr, msg.Amount.Amount,
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)
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if err != nil {
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return nil, err
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}
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bondDenom := k.BondDenom(ctx)
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if msg.Amount.Denom != bondDenom {
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return nil, sdkerrors.Wrapf(types.ErrBadDenom, "got %s, expected %s", msg.Amount.Denom, bondDenom)
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}
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valDstAddr, err := sdk.ValAddressFromBech32(msg.ValidatorDstAddress)
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if err != nil {
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return nil, err
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}
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completionTime, err := k.BeginRedelegation(
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ctx, delegatorAddress, valSrcAddr, valDstAddr, shares,
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)
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if err != nil {
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return nil, err
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}
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defer func() {
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telemetry.IncrCounter(1, types.ModuleName, "redelegate")
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telemetry.SetGaugeWithLabels(
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[]string{"tx", "msg", msg.Type()},
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float32(msg.Amount.Amount.Int64()),
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[]metrics.Label{telemetry.NewLabel("denom", msg.Amount.Denom)},
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)
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}()
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeRedelegate,
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sdk.NewAttribute(types.AttributeKeySrcValidator, msg.ValidatorSrcAddress),
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sdk.NewAttribute(types.AttributeKeyDstValidator, msg.ValidatorDstAddress),
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sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Amount.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyCompletionTime, completionTime.Format(time.RFC3339)),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress),
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),
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})
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return &types.MsgBeginRedelegateResponse{
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CompletionTime: completionTime,
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}, nil
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}
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func (k msgServer) Undelegate(goCtx context.Context, msg *types.MsgUndelegate) (*types.MsgUndelegateResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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addr, err := sdk.ValAddressFromBech32(msg.ValidatorAddress)
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if err != nil {
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return nil, err
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}
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delegatorAddress, err := sdk.AccAddressFromBech32(msg.DelegatorAddress)
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if err != nil {
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return nil, err
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}
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shares, err := k.ValidateUnbondAmount(
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ctx, delegatorAddress, addr, msg.Amount.Amount,
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)
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if err != nil {
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return nil, err
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}
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bondDenom := k.BondDenom(ctx)
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if msg.Amount.Denom != bondDenom {
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return nil, sdkerrors.Wrapf(types.ErrBadDenom, "got %s, expected %s", msg.Amount.Denom, bondDenom)
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}
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completionTime, err := k.Keeper.Undelegate(ctx, delegatorAddress, addr, shares)
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if err != nil {
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return nil, err
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}
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defer func() {
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telemetry.IncrCounter(1, types.ModuleName, "undelegate")
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telemetry.SetGaugeWithLabels(
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[]string{"tx", "msg", msg.Type()},
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float32(msg.Amount.Amount.Int64()),
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[]metrics.Label{telemetry.NewLabel("denom", msg.Amount.Denom)},
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)
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}()
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeUnbond,
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sdk.NewAttribute(types.AttributeKeyValidator, msg.ValidatorAddress),
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sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Amount.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyCompletionTime, completionTime.Format(time.RFC3339)),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress),
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),
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})
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return &types.MsgUndelegateResponse{
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CompletionTime: completionTime,
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}, nil
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}
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