The core protocol of WoopChain
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woop/attack/attack.go

107 lines
2.5 KiB

package attack
import (
"harmony-benchmark/log"
"math/rand"
"os"
"sync"
"time"
)
const (
DroppingTickDuration = 2 * time.Second
HitRate = 10
DelayResponseDuration = 10 * time.Second
ConsensusIdThresholdMin = 10
ConsensusIdThresholdMax = 100
)
type AttackType byte
const (
KilledItself AttackType = iota
DelayResponse
IncorrectResponse
)
// AttackModel contains different models of attacking.
type Attack struct {
AttackEnabled bool
attackType AttackType
ConsensusIdThreshold uint32
readyByConsensusThreshold bool
log log.Logger // Log utility
}
var attack *Attack
var once sync.Once
// GetInstance returns attack model by using singleton pattern.
func GetInstance() *Attack {
once.Do(func() {
attack = &Attack{}
attack.Init()
})
return attack
}
func (attack *Attack) Init() {
attack.AttackEnabled = false
attack.readyByConsensusThreshold = false
}
func (attack *Attack) SetAttackEnabled(AttackEnabled bool) {
attack.AttackEnabled = AttackEnabled
if AttackEnabled {
attack.attackType = AttackType(rand.Intn(3))
attack.ConsensusIdThreshold = uint32(ConsensusIdThresholdMin + rand.Intn(ConsensusIdThresholdMax-ConsensusIdThresholdMin))
}
}
func (attack *Attack) SetLogger(log log.Logger) {
attack.log = log
}
func (attack *Attack) Run() {
attack.NodeKilledByItSelf()
attack.DelayResponse()
}
// NodeKilledByItSelf runs killing itself attack
func (attack *Attack) NodeKilledByItSelf() {
if !attack.AttackEnabled || attack.attackType != KilledItself || !attack.readyByConsensusThreshold {
return
}
if rand.Intn(HitRate) == 0 {
attack.log.Debug("******************Killing myself******************", "PID: ", os.Getpid())
os.Exit(1)
}
}
func (attack *Attack) DelayResponse() {
if !attack.AttackEnabled || attack.attackType != DelayResponse || !attack.readyByConsensusThreshold {
return
}
if rand.Intn(HitRate) == 0 {
attack.log.Debug("******************Attack: DelayResponse******************", "PID: ", os.Getpid())
time.Sleep(DelayResponseDuration)
}
}
func (attack *Attack) IncorrectResponse() bool {
if !attack.AttackEnabled || attack.attackType != IncorrectResponse || !attack.readyByConsensusThreshold {
return false
}
if rand.Intn(HitRate) == 0 {
attack.log.Debug("******************Attack: IncorrectResponse******************", "PID: ", os.Getpid())
return true
}
return false
}
func (attack *Attack) UpdateConsensusReady(consensusId uint32) {
if consensusId > attack.ConsensusIdThreshold {
attack.readyByConsensusThreshold = true
}
}