/
msg_server.go
142 lines (116 loc) · 4.21 KB
/
msg_server.go
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package keeper
import (
"context"
sdk "github.com/cosmos/cosmos-sdk/types"
stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
"github.com/umee-network/umee/v4/util/sdkutil"
"github.com/umee-network/umee/v4/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
}
// Ensure prevote wasn't already submitted
if ms.HasAggregateExchangeRatePrevote(ctx, valAddr) {
return nil, types.ErrExistingPrevote
}
// Convert hex string to votehash
voteHash, err := types.AggregateVoteHashFromHex(msg.Hash)
if err != nil {
return nil, types.ErrInvalidHash.Wrap(err.Error())
}
aggregatePrevote := types.NewAggregateExchangeRatePrevote(voteHash, valAddr, uint64(ctx.BlockHeight()))
ms.SetAggregateExchangeRatePrevote(ctx, valAddr, aggregatePrevote)
return &types.MsgAggregateExchangeRatePrevoteResponse{}, nil
}
func (ms msgServer) AggregateExchangeRateVote(
goCtx context.Context,
msg *types.MsgAggregateExchangeRateVote,
) (*types.MsgAggregateExchangeRateVoteResponse, 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 := ms.GetParams(ctx)
aggregatePrevote, err := ms.GetAggregateExchangeRatePrevote(ctx, valAddr)
if err != nil {
return nil, types.ErrNoAggregatePrevote.Wrap(msg.Validator)
}
// Check the vote is submitted in the `period == prevote.period+1`
if (uint64(ctx.BlockHeight()) / params.VotePeriod) != (aggregatePrevote.SubmitBlock/params.VotePeriod)+1 {
return nil, types.ErrRevealPeriodMissMatch
}
exchangeRateTuples, err := types.ParseExchangeRateTuples(msg.ExchangeRates)
if err != nil {
return nil, err
}
// Verify that the vote hash and prevote hash match
hash := types.GetAggregateVoteHash(msg.Salt, msg.ExchangeRates, valAddr)
if aggregatePrevote.Hash != hash.String() {
return nil, types.ErrVerificationFailed.Wrapf("must be given %s not %s", aggregatePrevote.Hash, hash)
}
// Filter out rates which aren't included in the AcceptList
// This is also needed for slashing; in the end blocker we are checking if validator voted
// for all required currencies. If they missed some, then we increase their slashing counter.
filteredTuples := types.ExchangeRateTuples{}
for _, tuple := range exchangeRateTuples {
if params.AcceptList.Contains(tuple.Denom) {
filteredTuples = append(filteredTuples, tuple)
}
}
// Move aggregate prevote to aggregate vote with given exchange rates
ms.SetAggregateExchangeRateVote(ctx, valAddr, types.NewAggregateExchangeRateVote(filteredTuples, valAddr))
ms.DeleteAggregateExchangeRatePrevote(ctx, valAddr)
return &types.MsgAggregateExchangeRateVoteResponse{}, nil
}
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
}
val := ms.StakingKeeper.Validator(ctx, operatorAddr)
if val == nil {
return nil, stakingtypes.ErrNoValidatorFound.Wrap(msg.Operator)
}
ms.SetFeederDelegation(ctx, operatorAddr, delegateAddr)
sdkutil.Emit(&ctx, &types.EventDelegateFeedConsent{
Operator: msg.Operator, Delegate: msg.Delegate,
})
return &types.MsgDelegateFeedConsentResponse{}, nil
}