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handler_sidechain.go
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/
handler_sidechain.go
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package slashing
import (
"bytes"
"fmt"
"time"
"github.com/aximchain/axc-cosmos-sdk/asc"
sdk "github.com/aximchain/axc-cosmos-sdk/types"
"github.com/aximchain/axc-cosmos-sdk/types/fees"
)
func handleMsgAscSubmitEvidence(ctx sdk.Context, msg MsgAscSubmitEvidence, k Keeper) sdk.Result {
sideChainId := k.ScKeeper.AscSideChainId(ctx)
sideCtx, err := k.ScKeeper.PrepareCtxForSideChain(ctx, sideChainId)
if err != nil {
return ErrInvalidSideChainId(DefaultCodespace).Result()
}
chainID, err := SideChainIdFromText(sideChainId)
if err != nil {
return ErrInvalidEvidence(DefaultCodespace, err.Error()).Result()
}
header := ctx.BlockHeader()
var sideConsAddr asc.Address
var sideConsAddr2 asc.Address
var err2 error
if sdk.IsUpgrade(sdk.FixDoubleSignChainId) {
sideConsAddr, err = msg.Headers[0].ExtractSignerFromHeader(chainID)
sideConsAddr2, err2 = msg.Headers[1].ExtractSignerFromHeader(chainID)
} else {
sideConsAddr, err = msg.Headers[0].ExtractSignerFromHeader(nil)
sideConsAddr2, err2 = msg.Headers[1].ExtractSignerFromHeader(nil)
}
if err != nil {
return ErrInvalidEvidence(DefaultCodespace, fmt.Sprintf("Failed to extract signer from block header, %s", err.Error())).Result()
}
if err2 != nil {
return ErrInvalidEvidence(DefaultCodespace, fmt.Sprintf("Failed to extract signer from block header, %s", err.Error())).Result()
}
if bytes.Compare(sideConsAddr.Bytes(), sideConsAddr2.Bytes()) != 0 {
return ErrInvalidEvidence(DefaultCodespace, "The signers of two block headers are not the same").Result()
}
if k.hasSlashRecord(sideCtx, sideConsAddr.Bytes(), DoubleSign, uint64(msg.Headers[0].Number)) {
return ErrEvidenceHasBeenHandled(k.Codespace).Result()
}
//verify evidence age
evidenceTime := msg.Headers[0].Time
if msg.Headers[0].Time < msg.Headers[1].Time {
evidenceTime = msg.Headers[1].Time
}
age := sideCtx.BlockHeader().Time.Sub(time.Unix(int64(evidenceTime), 0))
if age > k.MaxEvidenceAge(sideCtx) {
return ErrExpiredEvidence(k.Codespace).Result()
}
slashAmount := k.DoubleSignSlashAmount(sideCtx)
validator, slashedAmount, slashErr := k.validatorSet.SlashSideChain(ctx, sideChainId, sideConsAddr.Bytes(), sdk.NewDec(slashAmount))
if slashErr != nil {
return ErrFailedToSlash(k.Codespace, slashErr.Error()).Result()
}
bondDenom := k.validatorSet.BondDenom(sideCtx)
submitterReward := k.SubmitterReward(sideCtx)
submitterRewardReal := sdk.MinInt64(slashedAmount.RawInt(), submitterReward)
submitterRewardCoin := sdk.NewCoin(bondDenom, submitterRewardReal)
if submitterRewardReal > 0 {
submitterBalance := k.BankKeeper.GetCoins(ctx, msg.Submitter)
if err := k.BankKeeper.SetCoins(ctx, msg.Submitter, submitterBalance.Plus(sdk.Coins{submitterRewardCoin})); err != nil {
return ErrFailedToSlash(k.Codespace, err.Error()).Result()
}
}
remainingReward := slashedAmount.RawInt() - submitterRewardReal
var toFeePool int64
var validatorsCompensation map[string]int64
var found bool
if remainingReward > 0 {
found, validatorsCompensation, err = k.validatorSet.AllocateSlashAmtToValidators(sideCtx, sideConsAddr.Bytes(), sdk.NewDec(remainingReward))
if err != nil {
return ErrFailedToSlash(k.Codespace, err.Error()).Result()
}
if !found && ctx.IsDeliverTx() { // if the related validators are not found, the amount will be added to fee pool
toFeePool = remainingReward
remainingCoin := sdk.NewCoin(bondDenom, remainingReward)
fees.Pool.AddAndCommitFee("side_double_sign_slash", sdk.NewFee(sdk.Coins{remainingCoin}, sdk.FeeForAll))
}
}
jailUntil := header.Time.Add(k.DoubleSignUnbondDuration(sideCtx))
sr := SlashRecord{
ConsAddr: sideConsAddr.Bytes(),
InfractionType: DoubleSign,
InfractionHeight: uint64(msg.Headers[0].Number),
SlashHeight: header.Height,
JailUntil: jailUntil,
SlashAmt: slashedAmount.RawInt(),
SideChainId: sideChainId,
}
k.setSlashRecord(sideCtx, sr)
// Set or updated validator jail duration
signInfo, found := k.getValidatorSigningInfo(sideCtx, sideConsAddr.Bytes())
if !found {
panic(fmt.Sprintf("Expected signing info for validator %s but not found", sideConsAddr.Hex()))
}
signInfo.JailedUntil = jailUntil
k.setValidatorSigningInfo(sideCtx, sideConsAddr.Bytes(), signInfo)
if ctx.IsDeliverTx() && k.PbsbServer != nil {
event := SideSlashEvent{
Validator: validator.GetOperator(),
InfractionType: DoubleSign,
InfractionHeight: msg.Headers[0].Number,
SlashHeight: header.Height,
JailUtil: jailUntil,
SlashAmt: slashedAmount.RawInt(),
SideChainId: sideChainId,
ToFeePool: toFeePool,
Submitter: msg.Submitter,
SubmitterReward: submitterRewardReal,
ValidatorsCompensation: validatorsCompensation,
}
k.PbsbServer.Publish(event)
}
return sdk.Result{}
}
func handleMsgSideChainUnjail(ctx sdk.Context, msg MsgSideChainUnjail, k Keeper) sdk.Result {
scCtx, err := k.ScKeeper.PrepareCtxForSideChain(ctx, msg.SideChainId)
if err != nil {
return ErrInvalidSideChainId(DefaultCodespace).Result()
}
if err := k.Unjail(scCtx, msg.ValidatorAddr); err != nil {
return err.Result()
}
tags := sdk.NewTags("sideChainId", []byte(msg.SideChainId), "validator", []byte(msg.ValidatorAddr.String()))
return sdk.Result{
Tags: tags,
}
}