Update hot-spot param flow example

Signed-off-by: Eric Zhao <[email protected]>

Author: sczyh30

example/hotspot_param_flow/hotspot_param_flow_example.go

@@ -7,15 +7,14 @@ import (
 	"time"
 
 	sentinel "github.com/alibaba/sentinel-golang/api"
-	"github.com/alibaba/sentinel-golang/core/base"
-	"github.com/alibaba/sentinel-golang/core/flow"
 	"github.com/alibaba/sentinel-golang/core/hotspot"
-	"github.com/alibaba/sentinel-golang/core/stat"
-	"github.com/alibaba/sentinel-golang/core/system"
 	"github.com/alibaba/sentinel-golang/util"
-	"github.com/google/uuid"
 )
 
+type fooStruct struct {
+	n int64
+}
+
 func main() {
 	var Resource = "test"
 
@@ -27,7 +26,6 @@ func main() {
 
 	_, err = hotspot.LoadRules([]*hotspot.Rule{
 		{
-			Id:                "1",
 			Resource:          Resource,
 			MetricType:        hotspot.QPS,
 			ControlBehavior:   hotspot.Reject,
@@ -41,7 +39,6 @@ func main() {
 			},
 		},
 		{
-			Id:                "2",
 			Resource:          Resource,
 			MetricType:        hotspot.QPS,
 			ControlBehavior:   hotspot.Reject,
@@ -58,26 +55,19 @@ func main() {
 		return
 	}
 
-	sc := base.NewSlotChain()
-	sc.AddStatPrepareSlotLast(&stat.StatNodePrepareSlot{})
-	sc.AddRuleCheckSlotLast(&system.SystemAdaptiveSlot{})
-	sc.AddRuleCheckSlotLast(&flow.FlowSlot{})
-	sc.AddRuleCheckSlotLast(&hotspot.Slot{})
-	sc.AddStatSlotLast(&stat.StatisticSlot{})
-	sc.AddStatSlotLast(&hotspot.ConcurrencyStatSlot{})
-
+	fmt.Println("Sentinel Go hot-spot param flow control demo is running. You may see the pass/block metric in the metric log.")
 	for i := 0; i < 10; i++ {
 		go func() {
 			for {
-				e, b := sentinel.Entry(Resource, sentinel.WithTrafficType(base.Inbound), sentinel.WithSlotChain(sc), sentinel.WithArgs(true, rand.Uint32()%30, "sentinel", uuid.New().String()))
+				e, b := sentinel.Entry(Resource, sentinel.WithArgs(true, rand.Uint32()%30, "sentinel", fooStruct{rand.Int63() % 5}))
 				if b != nil {
 					// Blocked. We could get the block reason from the BlockError.
-					time.Sleep(time.Duration(rand.Uint64()%10) * time.Millisecond)
-					//fmt.Println(util.CurrentTimeMillis(), "blocked")
+					time.Sleep(time.Duration(rand.Uint64()%50) * time.Millisecond)
+					fmt.Println(util.CurrentTimeMillis(), b.Error())
 				} else {
 					// Passed, wrap the logic here.
 					fmt.Println(util.CurrentTimeMillis(), "passed")
-					//time.Sleep(time.Duration(rand.Uint64()%10) * time.Millisecond)
+					time.Sleep(time.Duration(rand.Uint64()%50) * time.Millisecond)
 					// Be sure the entry is exited finally.
 					e.Exit()
 				}
@@ -87,15 +77,14 @@ func main() {
 	}
 
 	for {
-		e, b := sentinel.Entry(Resource, sentinel.WithTrafficType(base.Inbound), sentinel.WithSlotChain(sc), sentinel.WithArgs(false, uint32(9), "ahas", uuid.New().String()))
+		e, b := sentinel.Entry(Resource, sentinel.WithArgs(false, uint32(9), "ahas", fooStruct{rand.Int63() % 5}))
 		if b != nil {
 			// Blocked. We could get the block reason from the BlockError.
-			time.Sleep(time.Duration(rand.Uint64()%10) * time.Millisecond)
-			fmt.Println(util.CurrentTimeMillis(), "blocked")
+			time.Sleep(time.Duration(rand.Uint64()%50) * time.Millisecond)
 		} else {
 			// Passed, wrap the logic here.
 			fmt.Println(util.CurrentTimeMillis(), "passed")
-			time.Sleep(time.Duration(rand.Uint64()%10) * time.Millisecond)
+			time.Sleep(time.Duration(rand.Uint64()%50) * time.Millisecond)
 
 			// Be sure the entry is exited finally.
 			e.Exit()