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70 lines
1.3 KiB
70 lines
1.3 KiB
package attack
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import (
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"harmony-benchmark/log"
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"math/rand"
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"os"
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"sync"
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"time"
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)
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const (
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DroppingTickDuration = 2 * time.Second
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AttackEnabled = false
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HitRate = 10
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DelayResponseDuration = 10 * time.Second
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)
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// AttackModel contains different models of attacking.
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type Attack struct {
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AttackEnabled bool
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log log.Logger // Log utility
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}
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var attack *Attack
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var once sync.Once
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// GetAttackModel returns attack model by using singleton pattern.
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func GetAttackModel() *Attack {
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once.Do(func() {
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attack = &Attack{}
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attack.AttackEnabled = AttackEnabled
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})
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return attack
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}
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func (attack *Attack) SetLogger(log log.Logger) {
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attack.log = log
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}
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// Run runs all attack models in goroutine mode.
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func (attack *Attack) Run() {
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if !attack.AttackEnabled {
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return
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}
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// Adding attack model here.
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go func() {
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attack.NodeKilledByItSelf()
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}()
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}
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// NodeKilledByItSelf runs killing itself attack
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func (attack *Attack) NodeKilledByItSelf() {
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tick := time.Tick(DroppingTickDuration)
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for {
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<-tick
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if rand.Intn(HitRate) == 0 {
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attack.log.Debug("***********************Killing myself***********************", "PID: ", os.Getpid())
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os.Exit(1)
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}
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}
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}
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func (attack *Attack) DelayResponse() {
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if !attack.AttackEnabled {
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return
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}
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if rand.Intn(HitRate) == 0 {
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time.Sleep(DelayResponseDuration)
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}
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}
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