59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
package slashing
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"fmt"
|
|
|
|
sdk "github.com/cosmos/cosmos-sdk/types"
|
|
abci "github.com/tendermint/abci/types"
|
|
crypto "github.com/tendermint/go-crypto"
|
|
tmtypes "github.com/tendermint/tendermint/types"
|
|
)
|
|
|
|
func NewBeginBlocker(sk Keeper) sdk.BeginBlocker {
|
|
return func(ctx sdk.Context, req abci.RequestBeginBlock) abci.ResponseBeginBlock {
|
|
// Tag the height
|
|
heightBytes := make([]byte, 8)
|
|
binary.LittleEndian.PutUint64(heightBytes, uint64(req.Header.Height))
|
|
tags := sdk.NewTags("height", heightBytes)
|
|
|
|
// Deal with any equivocation evidence
|
|
for _, evidence := range req.ByzantineValidators {
|
|
var pk crypto.PubKey
|
|
sk.cdc.MustUnmarshalBinaryBare(evidence.PubKey, &pk)
|
|
switch string(evidence.Type) {
|
|
case tmtypes.DUPLICATE_VOTE:
|
|
sk.handleDoubleSign(ctx, evidence.Height, evidence.Time, pk)
|
|
default:
|
|
ctx.Logger().With("module", "x/slashing").Error(fmt.Sprintf("Ignored unknown evidence type: %s", string(evidence.Type)))
|
|
}
|
|
}
|
|
|
|
// Figure out which validators were absent
|
|
absent := make(map[crypto.PubKey]struct{})
|
|
for _, pubkey := range req.AbsentValidators {
|
|
var pk crypto.PubKey
|
|
sk.cdc.MustUnmarshalBinaryBare(pubkey, &pk)
|
|
absent[pk] = struct{}{}
|
|
}
|
|
|
|
// Iterate over all the validators which *should* have signed this block
|
|
sk.stakeKeeper.IterateValidatorsBonded(ctx, func(_ int64, validator sdk.Validator) (stop bool) {
|
|
pubkey := validator.GetPubKey()
|
|
present := true
|
|
if _, ok := absent[pubkey]; ok {
|
|
present = false
|
|
}
|
|
sk.handleValidatorSignature(ctx, pubkey, present)
|
|
return false
|
|
})
|
|
|
|
// Return the begin block response
|
|
// TODO Return something composable, so other modules can also have BeginBlockers
|
|
// TODO Add some more tags so clients can track slashing events
|
|
return abci.ResponseBeginBlock{
|
|
Tags: tags.ToKVPairs(),
|
|
}
|
|
}
|
|
}
|