/
handler.go
226 lines (182 loc) · 7.01 KB
/
handler.go
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package staking
import (
"github.com/ayher/project-anatha/x/hra"
"time"
tmstrings "github.com/tendermint/tendermint/libs/strings"
tmtypes "github.com/tendermint/tendermint/types"
sdk "github.com/ayher/anatha/types"
sdkerrors "github.com/ayher/anatha/types/errors"
"github.com/ayher/project-anatha/x/staking/keeper"
"github.com/ayher/project-anatha/x/staking/types"
)
func NewHandler(k keeper.Keeper) sdk.Handler {
return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
ctx = ctx.WithEventManager(sdk.NewEventManager())
switch msg := msg.(type) {
case types.MsgCreateValidator:
return handleMsgCreateValidator(ctx, msg, k)
case types.MsgEditValidator:
return handleMsgEditValidator(ctx, msg, k)
case types.MsgDelegate:
return handleMsgDelegate(ctx, msg, k)
case types.MsgUndelegate:
return handleMsgUndelegate(ctx, msg, k)
default:
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized %s message type: %T", ModuleName, msg)
}
}
}
// These functions assume everything has been authenticated,
// now we just perform action and save
func handleMsgCreateValidator(ctx sdk.Context, msg types.MsgCreateValidator, k keeper.Keeper) (*sdk.Result, error) {
// check if sender has a HRA
if ctx.BlockHeight() > hra.NameConstraintBlock && ! k.HraKeeper.OwnsAnyName(ctx, msg.DelegatorAddress) {
return nil, hra.ErrNameNotRegistered
}
// check to see if the pubkey or sender has been registered before
if _, found := k.GetValidator(ctx, msg.ValidatorAddress); found {
return nil, ErrValidatorOwnerExists
}
if _, found := k.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(msg.PubKey)); found {
return nil, ErrValidatorPubKeyExists
}
if msg.Value.Denom != k.BondDenom(ctx) {
return nil, ErrBadDenom
}
if _, err := msg.Description.EnsureLength(); err != nil {
return nil, err
}
if ctx.ConsensusParams() != nil {
tmPubKey := tmtypes.TM2PB.PubKey(msg.PubKey)
if !tmstrings.StringInSlice(tmPubKey.Type, ctx.ConsensusParams().Validator.PubKeyTypes) {
return nil, sdkerrors.Wrapf(
ErrValidatorPubKeyTypeNotSupported,
"got: %s, valid: %s", tmPubKey.Type, ctx.ConsensusParams().Validator.PubKeyTypes,
)
}
}
validator := NewValidator(msg.ValidatorAddress, msg.PubKey, msg.Description)
validator.MinSelfDelegation = types.DefaultStake
validator.Ticket = k.GetLastTicket(ctx)
k.SetLastTicket(ctx, validator.Ticket + 1)
k.SetValidator(ctx, validator)
k.SetValidatorByConsAddr(ctx, validator)
k.SetNewValidatorByPowerIndex(ctx, validator)
k.SetNewValidatorByTicket(ctx, validator)
// call the after-creation hook
k.AfterValidatorCreated(ctx, validator.OperatorAddress)
// move coins from the msg.Address account to a (self-delegation) delegator account
// the validator account and global shares are updated within here
// NOTE source will always be from a wallet which are unbonded
_, err := k.Delegate(ctx, msg.DelegatorAddress, types.DefaultStake, sdk.Unbonded, validator, true)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeCreateValidator,
sdk.NewAttribute(types.AttributeKeyValidator, msg.ValidatorAddress.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Value.Amount.String()),
),
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgEditValidator(ctx sdk.Context, msg types.MsgEditValidator, k keeper.Keeper) (*sdk.Result, error) {
// check if sender has a HRA
if ctx.BlockHeight() > hra.NameConstraintBlock && ! k.HraKeeper.OwnsAnyName(ctx, msg.GetSigners()[0]) {
return nil, hra.ErrNameNotRegistered
}
// validator must already be registered
validator, found := k.GetValidator(ctx, msg.ValidatorAddress)
if !found {
return nil, ErrNoValidatorFound
}
// replace all editable fields (clients should autofill existing values)
description, err := validator.Description.UpdateDescription(msg.Description)
if err != nil {
return nil, err
}
validator.Description = description
k.SetValidator(ctx, validator)
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.ValidatorAddress.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgDelegate(ctx sdk.Context, msg types.MsgDelegate, k keeper.Keeper) (*sdk.Result, error) {
// check if sender has a HRA
if ctx.BlockHeight() > hra.NameConstraintBlock && ! k.HraKeeper.OwnsAnyName(ctx, msg.GetSigners()[0]) {
return nil, hra.ErrNameNotRegistered
}
validator, found := k.GetValidator(ctx, msg.ValidatorAddress)
if !found {
return nil, ErrNoValidatorFound
}
toDelegate := types.DefaultStake.Sub(validator.Tokens)
if ! toDelegate.IsPositive() {
return nil, ErrBadDelegationAmount
}
// NOTE: source funds are always unbonded
_, err := k.Delegate(ctx, msg.DelegatorAddress, toDelegate, sdk.Unbonded, validator, true)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeDelegate,
sdk.NewAttribute(types.AttributeKeyValidator, msg.ValidatorAddress.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, toDelegate.String()),
),
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgUndelegate(ctx sdk.Context, msg types.MsgUndelegate, k keeper.Keeper) (*sdk.Result, error) {
// check if sender has a HRA
if ctx.BlockHeight() > hra.NameConstraintBlock && ! k.HraKeeper.OwnsAnyName(ctx, msg.DelegatorAddress) {
return nil, hra.ErrNameNotRegistered
}
validator, found := k.GetValidator(ctx, msg.ValidatorAddress)
if !found {
return nil, ErrNoValidatorFound
}
amount := validator.Tokens
shares, err := k.ValidateUnbondAmount(
ctx, msg.DelegatorAddress, msg.ValidatorAddress, amount,
)
if err != nil {
return nil, err
}
completionTime, err := k.Undelegate(ctx, msg.DelegatorAddress, msg.ValidatorAddress, shares)
if err != nil {
return nil, err
}
completionTimeBz := types.ModuleCdc.MustMarshalBinaryLengthPrefixed(completionTime)
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeUnbond,
sdk.NewAttribute(types.AttributeKeyValidator, msg.ValidatorAddress.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, amount.String()),
sdk.NewAttribute(types.AttributeKeyCompletionTime, completionTime.Format(time.RFC3339)),
),
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.DelegatorAddress.String()),
),
})
return &sdk.Result{Data: completionTimeBz, Events: ctx.EventManager().Events()}, nil
}