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msg_server.go
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/
msg_server.go
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package keeper
import (
"context"
"github.com/cosmos/cosmos-sdk/types/errors"
sdkerrors "cosmossdk.io/errors"
sdk "github.com/cosmos/cosmos-sdk/types"
stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
"github.com/NibiruChain/nibiru/x/oracle/types"
)
type msgServer struct {
Keeper
}
// NewMsgServerImpl returns an implementation of the oracle MsgServer interface
// for the provided Keeper.
func NewMsgServerImpl(keeper Keeper) types.MsgServer {
return &msgServer{Keeper: keeper}
}
func (ms msgServer) AggregateExchangeRatePrevote(
goCtx context.Context,
msg *types.MsgAggregateExchangeRatePrevote,
) (*types.MsgAggregateExchangeRatePrevoteResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)
valAddr, err := sdk.ValAddressFromBech32(msg.Validator)
if err != nil {
return nil, err
}
feederAddr, err := sdk.AccAddressFromBech32(msg.Feeder)
if err != nil {
return nil, err
}
if err := ms.ValidateFeeder(ctx, feederAddr, valAddr); err != nil {
return nil, err
}
// Convert hex string to votehash
voteHash, err := types.AggregateVoteHashFromHexString(msg.Hash)
if err != nil {
return nil, sdkerrors.Wrap(types.ErrInvalidHash, err.Error())
}
ms.Keeper.Prevotes.Insert(ctx, valAddr, types.NewAggregateExchangeRatePrevote(voteHash, valAddr, uint64(ctx.BlockHeight())))
err = ctx.EventManager().EmitTypedEvent(&types.EventAggregatePrevote{
Validator: msg.Validator,
Feeder: msg.Feeder,
})
return &types.MsgAggregateExchangeRatePrevoteResponse{}, err
}
func (ms msgServer) AggregateExchangeRateVote(
goCtx context.Context, msg *types.MsgAggregateExchangeRateVote,
) (msgResp *types.MsgAggregateExchangeRateVoteResponse, err error) {
ctx := sdk.UnwrapSDKContext(goCtx)
valAddr, err := sdk.ValAddressFromBech32(msg.Validator)
if err != nil {
return nil, err
}
feederAddr, err := sdk.AccAddressFromBech32(msg.Feeder)
if err != nil {
return nil, err
}
if err := ms.ValidateFeeder(ctx, feederAddr, valAddr); err != nil {
return nil, err
}
params, err := ms.Keeper.Params.Get(ctx)
if err != nil {
return nil, err
}
// An aggergate prevote is required to get an aggregate vote.
aggregatePrevote, err := ms.Keeper.Prevotes.Get(ctx, valAddr)
if err != nil {
return nil, sdkerrors.Wrap(types.ErrNoAggregatePrevote, msg.Validator)
}
// Check a msg is submitted proper period
// This condition necessary for the commit-reveal scheme.
if (uint64(ctx.BlockHeight())/params.VotePeriod)-(aggregatePrevote.SubmitBlock/params.VotePeriod) != 1 {
return nil, types.ErrRevealPeriodMissMatch.Wrapf(
"aggregate prevote block: %d, current block: %d, vote period: %d",
aggregatePrevote.SubmitBlock, ctx.BlockHeight(), params.VotePeriod,
)
}
// Slice of (Pair, ExchangeRate) tuples.
exchangeRateTuples, err := types.ParseExchangeRateTuples(msg.ExchangeRates)
if err != nil {
return nil, sdkerrors.Wrap(errors.ErrInvalidCoins, err.Error())
}
// Check all pairs are in the vote target
for _, tuple := range exchangeRateTuples {
if !ms.IsWhitelistedPair(ctx, tuple.Pair) {
return nil, sdkerrors.Wrap(types.ErrUnknownPair, tuple.Pair.String())
}
}
// Verify an exchange rate with aggregate prevote hash
hash := types.GetAggregateVoteHash(msg.Salt, msg.ExchangeRates, valAddr)
if aggregatePrevote.Hash != hash.String() {
return nil, sdkerrors.Wrapf(
types.ErrVerificationFailed, "must be given %s not %s", aggregatePrevote.Hash, hash,
)
}
// Move aggregate prevote to aggregate vote with given exchange rates
ms.Keeper.Votes.Insert(
ctx, valAddr, types.NewAggregateExchangeRateVote(exchangeRateTuples, valAddr),
)
_ = ms.Keeper.Prevotes.Delete(ctx, valAddr)
priceTuples, err := types.NewExchangeRateTuplesFromString(msg.ExchangeRates)
if err != nil {
return
}
err = ctx.EventManager().EmitTypedEvent(&types.EventAggregateVote{
Validator: msg.Validator,
Feeder: msg.Feeder,
Prices: priceTuples,
})
return &types.MsgAggregateExchangeRateVoteResponse{}, err
}
func (ms msgServer) DelegateFeedConsent(
goCtx context.Context, msg *types.MsgDelegateFeedConsent,
) (*types.MsgDelegateFeedConsentResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)
operatorAddr, err := sdk.ValAddressFromBech32(msg.Operator)
if err != nil {
return nil, err
}
delegateAddr, err := sdk.AccAddressFromBech32(msg.Delegate)
if err != nil {
return nil, err
}
// Check the delegator is a validator
val := ms.StakingKeeper.Validator(ctx, operatorAddr)
if val == nil {
return nil, sdkerrors.Wrap(stakingtypes.ErrNoValidatorFound, msg.Operator)
}
// Set the delegation
ms.Keeper.FeederDelegations.Insert(ctx, operatorAddr, delegateAddr)
err = ctx.EventManager().EmitTypedEvent(&types.EventDelegateFeederConsent{
Feeder: msg.Delegate,
Validator: msg.Operator,
})
return &types.MsgDelegateFeedConsentResponse{}, err
}