[ISSUE #102] 修复 circuitbreaker 熔断指标上报 prometheus 出现 nil 导致 panic

examples/circuitbreaker/consumer/polaris.yaml

@@ -1,7 +1,7 @@
 global:
   serverConnector:
     addresses:
-      - 172.18.0.1:8091
+      - 127.0.0.1:8091
   statReporter:
     enable: true
     chain:

examples/circuitbreaker/provider/polaris.yaml

@@ -1,7 +1,7 @@
 global:
   serverConnector:
     addresses:
-      - 172.18.0.1:8091
+      - 127.0.0.1:8091
   statReporter:
     enable: true
     chain:

examples/quickstart/provider/main.go

@@ -27,7 +27,6 @@ import (
 	"os/signal"
 	"strings"
 	"syscall"
-	"time"
 
 	"github.com/polarismesh/polaris-go"
 )
@@ -121,22 +120,6 @@ func (svr *PolarisProvider) deregisterService() {
 	log.Printf("deregister successfully.")
 }
 
-func (svr *PolarisProvider) doHeartbeat() {
-	log.Printf("start to invoke heartbeat operation")
-	ticker := time.NewTicker(time.Duration(5 * time.Second))
-	for range ticker.C {
-		if !svr.isShutdown {
-			heartbeatRequest := &polaris.InstanceHeartbeatRequest{}
-			heartbeatRequest.Namespace = namespace
-			heartbeatRequest.Service = service
-			heartbeatRequest.Host = svr.host
-			heartbeatRequest.Port = svr.port
-			heartbeatRequest.ServiceToken = token
-			svr.provider.Heartbeat(heartbeatRequest)
-		}
-	}
-}
-
 func (svr *PolarisProvider) runMainLoop() {
 	ch := make(chan os.Signal, 1)
 	signal.Notify(ch, []os.Signal{

examples/ratelimit/consumer/polaris.yaml

@@ -1,7 +1,7 @@
 global:
   serverConnector:
     addresses:
-      - 9.134.5.52:8091
+      - 127.0.0.1:8091
   statReporter:
     enable: true
     chain:

examples/ratelimit/provider/polaris.yaml

@@ -1,7 +1,7 @@
 global:
   serverConnector:
     addresses:
-      - 9.134.5.52:8091
+      - 127.0.0.1:8091
   statReporter:
     enable: true
     chain:

examples/route/dynamic/README-zh.md

@@ -58,16 +58,16 @@ global:
 
 ```
 # linux/mac运行命令
-./provider --metadata="env=dev" > provider-20000.log 2>&1 &
-./provider --metadata="env=test" > provider-20001.log 2>&1 &
-./provider --metadata="env=pre" > provider-20002.log 2>&1 &
-./provider --metadata="env=prod" > provider-20003.log 2>&1 &
+./provider --port="20000" --metadata="env=dev" > provider-20000.log 2>&1 &
+./provider --port="20001" --metadata="env=test" > provider-20001.log 2>&1 &
+./provider --port="20002" --metadata="env=pre" > provider-20002.log 2>&1 &
+./provider --port="20003" --metadata="env=prod" > provider-20003.log 2>&1 &
 
 # windows运行命令
-./provider.exe --metadata="env=dev" > provider-20000.log
-./provider.exe --metadata="env=test" > provider-20001.log
-./provider.exe --metadata="env=pre" > provider-20002.log
-./provider.exe --metadata="env=prod" > provider-20003.log
+./provider.exe  --port="20000" --metadata="env=dev" > provider-20000.log
+./provider.exe  --port="20001" --metadata="env=test" > provider-20001.log
+./provider.exe  --port="20002" --metadata="env=pre" > provider-20002.log
+./provider.exe  --port="20003" --metadata="env=prod" > provider-20003.log
 ```
 
 运行构建出的**consumer**可执行文件
@@ -76,18 +76,18 @@ global:
 
 ```
 # linux/mac运行命令
-./consumer --selfNamespace={selfName} --selfService=EchoConsumer
+./consumer
 
 # windows运行命令
-./consumer.exe --selfNamespace={selfName} --selfService=EchoConsumer
+./consumer.exe
 ```
 
 ### 验证
 
 通过设置请求头参数***env***的值，实现路由到不同的服务实例
 
 ```
-curl -H 'env: pre' http://127.0.0.1:18080/echo
+curl http://127.0.0.1:18080/echo?env=pre
 
 Hello, I'm RouteEchoServer Provider, My metadata's : env=pre, host : x.x.x.x:x
 ```

examples/route/dynamic/README.md

@@ -76,18 +76,18 @@ Run the built **consumer** executable
 
 ```
 # linux/mac
-./consumer --selfNamespace={selfName} --selfService=EchoConsumer
+./consumer
 
 # windows
-./consumer.exe --selfNamespace={selfName} --selfService=EchoConsumer
+./consumer.exe
 ```
 
 ### Verify
 
 Realize the route to different service instances by setting the value of the request header **env**
 
 ```
-curl -H 'env: pre' http://127.0.0.1:18080/echo
+curl http://127.0.0.1:18080/echo?env=pre
 
 Hello, I'm RouteEchoServer Provider, My metadata's : env=pre, host : x.x.x.x:x
 ```

examples/route/dynamic/consumer/main.go

@@ -23,6 +23,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"log"
+	"net"
 	"net/http"
 	"strings"
 	"time"
@@ -37,6 +38,7 @@ var (
 	selfNamespace string
 	selfService   string
 	port          int64
+	token         string
 )
 
 func initArgs() {
@@ -45,18 +47,42 @@ func initArgs() {
 	flag.StringVar(&selfNamespace, "selfNamespace", "default", "selfNamespace")
 	flag.StringVar(&selfService, "selfService", "", "selfService")
 	flag.Int64Var(&port, "port", 18080, "port")
+	flag.StringVar(&token, "token", "", "token")
 }
 
 // PolarisConsumer .
 type PolarisConsumer struct {
 	consumer  polaris.ConsumerAPI
 	router    polaris.RouterAPI
+	provider  polaris.ProviderAPI
 	namespace string
 	service   string
 }
 
 // Run .
 func (svr *PolarisConsumer) Run() {
+	if selfService != "" && selfNamespace != "" {
+		tmpHost, err := getLocalHost(svr.provider.SDKContext().GetConfig().GetGlobal().GetServerConnector().GetAddresses()[0])
+		if nil != err {
+			panic(fmt.Errorf("error occur while fetching localhost: %v", err))
+		}
+		req := &polaris.InstanceRegisterRequest{}
+		req.Namespace = selfNamespace
+		req.Service = selfService
+		log.Printf("start to invoke register operation")
+		registerRequest := &polaris.InstanceRegisterRequest{}
+		registerRequest.Service = service
+		registerRequest.Namespace = namespace
+		registerRequest.Host = tmpHost
+		registerRequest.Port = int(port)
+		registerRequest.ServiceToken = token
+		resp, err := svr.provider.RegisterInstance(registerRequest)
+		if nil != err {
+			log.Fatalf("fail to register instance, err is %v", err)
+		}
+		log.Printf("register response: instanceId %s", resp.InstanceID)
+	}
+
 	svr.runWebServer()
 }
 
@@ -155,6 +181,7 @@ func main() {
 	svr := &PolarisConsumer{
 		consumer:  polaris.NewConsumerAPIByContext(sdkCtx),
 		router:    polaris.NewRouterAPIByContext(sdkCtx),
+		provider:  polaris.NewProviderAPIByContext(sdkCtx),
 		namespace: namespace,
 		service:   service,
 	}
@@ -177,3 +204,16 @@ func convertQuery(rawQuery string) map[string]string {
 	}
 	return meta
 }
+
+func getLocalHost(serverAddr string) (string, error) {
+	conn, err := net.Dial("tcp", serverAddr)
+	if nil != err {
+		return "", err
+	}
+	localAddr := conn.LocalAddr().String()
+	colonIdx := strings.LastIndex(localAddr, ":")
+	if colonIdx > 0 {
+		return localAddr[:colonIdx], nil
+	}
+	return localAddr, nil
+}

examples/route/dynamic/provider/main.go

@@ -89,6 +89,22 @@ func (svr *PolarisProvider) Run() {
 	runMainLoop()
 }
 
+func (svr *PolarisProvider) registerService() {
+	log.Printf("start to invoke register operation")
+	registerRequest := &polaris.InstanceRegisterRequest{}
+	registerRequest.Service = service
+	registerRequest.Namespace = namespace
+	registerRequest.Host = host
+	registerRequest.Port = svr.port
+	registerRequest.ServiceToken = token
+	registerRequest.Metadata = convertMetadatas()
+	resp, err := svr.provider.RegisterInstance(registerRequest)
+	if nil != err {
+		log.Fatalf("fail to register instance, err is %v", err)
+	}
+	log.Printf("register response: instanceId %s", resp.InstanceID)
+}
+
 func (svr *PolarisProvider) runWebServer() {
 	http.HandleFunc("/echo", func(rw http.ResponseWriter, r *http.Request) {
 		rw.WriteHeader(http.StatusOK)
@@ -112,22 +128,6 @@ func (svr *PolarisProvider) runWebServer() {
 
 }
 
-func (svr *PolarisProvider) registerService() {
-	log.Printf("start to invoke register operation")
-	registerRequest := &polaris.InstanceRegisterRequest{}
-	registerRequest.Service = service
-	registerRequest.Namespace = namespace
-	registerRequest.Host = host
-	registerRequest.Port = svr.port
-	registerRequest.ServiceToken = token
-	registerRequest.Metadata = convertMetadatas()
-	resp, err := svr.provider.RegisterInstance(registerRequest)
-	if nil != err {
-		log.Fatalf("fail to register instance, err is %v", err)
-	}
-	log.Printf("register response: instanceId %s", resp.InstanceID)
-}
-
 func runMainLoop() {
 	ch := make(chan os.Signal, 1)
 	signal.Notify(ch, []os.Signal{

examples/route/nearby/consumer/go.mod

@@ -4,6 +4,8 @@ go 1.17
 
 require github.com/polarismesh/polaris-go v1.2.0-beta.3
 
+replace github.com/polarismesh/polaris-go => ../../../../
+
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
@@ -32,5 +34,3 @@ require (
 	google.golang.org/protobuf v1.28.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
-
-replace github.com/polarismesh/polaris-go => ../../../../

pkg/model/service.go

@@ -775,7 +775,7 @@ type CircuitBreakGauge struct {
 	CBStatus       CircuitBreakerStatus
 }
 
-// GetCircuitBreakerStatus 获取变化前的熔断状态
+// GetCircuitBreakerStatus 获取当前实例熔断状态
 func (cbg *CircuitBreakGauge) GetCircuitBreakerStatus() CircuitBreakerStatus {
 	return cbg.CBStatus
 }

pkg/model/stat.go

@@ -64,6 +64,31 @@ const (
 	RouteStat
 )
 
+func DescMetricType(t MetricType) string {
+	switch t {
+	case SDKAPIStat:
+		return "SDKAPIStat"
+	case ServiceStat:
+		return "ServiceStat"
+	case InstanceStat:
+		return "InstanceStat"
+	case SDKCfgStat:
+		return "SDKCfgStat"
+	case CircuitBreakStat:
+		return "CircuitBreakStat"
+	case PluginAPIStat:
+		return "PluginAPIStat"
+	case LoadBalanceStat:
+		return "LoadBalanceStat"
+	case RateLimitStat:
+		return "RateLimitStat"
+	case RouteStat:
+		return "RouteStat"
+	default:
+		return "Unknown"
+	}
+}
+
 var metricTypes = HashSet{}
 
 // ValidMetircType 检测是不是合法的统计类型.

plugin/localregistry/inmemory/inmemory.go

@@ -575,7 +575,7 @@ func (g *LocalCache) UpdateInstances(svcUpdateReq *localregistry.ServiceUpdateRe
 					cbStatusUpdated = false
 				}
 				err := g.engine.SyncReportStat(model.CircuitBreakStat,
-					&model.CircuitBreakGauge{ChangeInstance: updateInstance, CBStatus: preCBStatus})
+					&model.CircuitBreakGauge{ChangeInstance: updateInstance, CBStatus: nextCBStatus})
 				if err != nil {
 					log.GetBaseLogger().Errorf("fail to report circuitbreak change, error %v", err)
 				}

plugin/statreporter/prometheus/model.go

@@ -161,14 +161,14 @@ var (
 	CircuitBreakerOpen = metricDesc{
 		Name:       MetricsNameCircuitBreakerOpen,
 		Help:       "total of opened circuit breaker",
-		MetricType: TypeForCounterVec,
+		MetricType: TypeForGaugeVec,
 		LabelNames: GetLabels(CircuitBreakerGaugeLabelOrder),
 	}
 
 	CircuitBreakerHalfOpen = metricDesc{
 		Name:       MetricsNameCircuitBreakerHalfOpen,
 		Help:       "total of half-open circuit breaker",
-		MetricType: TypeForCounterVec,
+		MetricType: TypeForGaugeVec,
 		LabelNames: GetLabels(CircuitBreakerGaugeLabelOrder),
 	}
 )

plugin/statreporter/prometheus/prometheus_handler.go

@@ -223,21 +223,22 @@ func (p *PrometheusHandler) handleRateLimitGauge(metricsType model.MetricType, v
 func (p *PrometheusHandler) handleCircuitBreakGauge(metricsType model.MetricType, val *model.CircuitBreakGauge) {
 	labels := p.convertCircuitBreakGaugeToLabels(val)
 
-	open := p.metricVecCaches[MetricsNameCircuitBreakerOpen].(*prometheus.CounterVec)
+	open := p.metricVecCaches[MetricsNameCircuitBreakerOpen].(*prometheus.GaugeVec)
 
+	// 计算完之后的熔断状态
 	status := val.GetCircuitBreakerStatus().GetStatus()
 	if status == model.Open {
 		open.With(labels).Inc()
 	} else {
-		open.With(labels).Add(-1)
+		open.With(labels).Dec()
 	}
 
-	halfOpen := p.metricVecCaches[MetricsNameCircuitBreakerHalfOpen].(*prometheus.CounterVec)
+	halfOpen := p.metricVecCaches[MetricsNameCircuitBreakerHalfOpen].(*prometheus.GaugeVec)
 
 	if status == model.HalfOpen {
 		halfOpen.With(labels).Inc()
 	} else {
-		halfOpen.With(labels).Add(-1)
+		halfOpen.With(labels).Dec()
 	}
 }