fix: add metrics basic support

common/extension/metrics.go

@@ -23,20 +23,20 @@ import (
 
 // we couldn't store the instance because the some instance may initialize before loading configuration
 // so lazy initialization will be better.
-var metricReporterMap = make(map[string]func() metrics.Reporter, 4)
+var metricReporterMap = make(map[string]func(config *metrics.ReporterConfig) metrics.Reporter, 4)
 
 // SetMetricReporter sets a reporter with the @name
-func SetMetricReporter(name string, reporterFunc func() metrics.Reporter) {
+func SetMetricReporter(name string, reporterFunc func(config *metrics.ReporterConfig) metrics.Reporter) {
 	metricReporterMap[name] = reporterFunc
 }
 
 // GetMetricReporter finds the reporter with @name.
 // if not found, it will panic.
 // we should know that this method usually is called when system starts, so we should panic
-func GetMetricReporter(name string) metrics.Reporter {
+func GetMetricReporter(name string, config *metrics.ReporterConfig) metrics.Reporter {
 	reporterFunc, found := metricReporterMap[name]
 	if !found {
 		panic("Cannot find the reporter with name: " + name)
 	}
-	return reporterFunc()
+	return reporterFunc(config)
 }

common/extension/metrics_test.go

@@ -35,10 +35,10 @@ import (
 func TestGetMetricReporter(t *testing.T) {
 	reporter := &mockReporter{}
 	name := "mock"
-	SetMetricReporter(name, func() metrics.Reporter {
+	SetMetricReporter(name, func(config *metrics.ReporterConfig) metrics.Reporter {
 		return reporter
 	})
-	res := GetMetricReporter(name)
+	res := GetMetricReporter(name, metrics.NewReporterConfig())
 	assert.Equal(t, reporter, res)
 }
 

config/consumer_config.go

@@ -40,7 +40,7 @@ const (
 type ConsumerConfig struct {
 	Filter string `yaml:"filter" json:"filter,omitempty" property:"filter"`
 	// support string
-	RegistryIDs []string `yaml:"registryIDs" json:"registryIDs,omitempty" property:"registryIDs"`
+	RegistryIDs []string `yaml:"registry-ids" json:"registry-ids,omitempty" property:"registry-ids"`
 
 	RequestTimeout string `default:"3s" yaml:"request-timeout" json:"request-timeout,omitempty" property:"request-timeout"`
 	ProxyFactory   string `default:"default" yaml:"proxy" json:"proxy,omitempty" property:"proxy"`

config/metric_config.go

@@ -17,27 +17,56 @@
 
 package config
 
-var defaultHistogramBucket = []float64{10, 50, 100, 200, 500, 1000, 10000}
+import (
+	"github.com/creasty/defaults"
+
+	"github.com/pkg/errors"
+)
+
+import (
+	"dubbo.apache.org/dubbo-go/v3/common/extension"
+	"dubbo.apache.org/dubbo-go/v3/metrics"
+)
 
 // MetricConfig This is the config struct for all metrics implementation
 type MetricConfig struct {
-	Reporters []string `yaml:"reporters" json:"reporters,omitempty"`
-	// TODO s?
-	HistogramBucket []float64 `yaml:"histogram_bucket" json:"histogram_bucket,omitempty"`
+	Mode               string `default:"pull" yaml:"mode" json:"mode,omitempty" property:"mode"` // push or pull,
+	Namespace          string `default:"dubbo" yaml:"namespace" json:"namespace,omitempty" property:"namespace"`
+	Enable             string `default:"true" yaml:"enable" json:"enable,omitempty" property:"enable"`
+	Port               string `default:"9090" yaml:"port" json:"port,omitempty" property:"port"`
+	Path               string `default:"/metrics" yaml:"path" json:"path,omitempty" property:"path"`
+	PushGatewayAddress string `default:"" yaml:"push-gateway-address" json:"push-gateway-address,omitempty" property:"push-gateway-address"`
 }
 
-// nolint
-func (mc *MetricConfig) Init() error {
-	return nil
+func (m *MetricConfig) ToReporterConfig() *metrics.ReporterConfig {
+	defaultMetricsReportConfig := metrics.NewReporterConfig()
+	if m.Mode == metrics.ReportModePush {
+		defaultMetricsReportConfig.Mode = metrics.ReportModePush
+	}
+	if m.Namespace != "" {
+		defaultMetricsReportConfig.Namespace = m.Namespace
+	}
+
+	defaultMetricsReportConfig.Enable = m.Enable == "1"
+	defaultMetricsReportConfig.Port = m.Port
+	defaultMetricsReportConfig.Path = m.Path
+	defaultMetricsReportConfig.PushGatewayAddress = m.PushGatewayAddress
+	return defaultMetricsReportConfig
 }
 
-// GetHistogramBucket find the histogram bucket
-// if it's empty, the default value will be return
-func (mc *MetricConfig) GetHistogramBucket() []float64 {
-	if len(mc.HistogramBucket) == 0 {
-		mc.HistogramBucket = defaultHistogramBucket
+// nolint
+func (mc *MetricConfig) Init() error {
+	if mc == nil {
+		return errors.New("metrics config is null")
+	}
+	if err := defaults.Set(mc); err != nil {
+		return err
 	}
-	return mc.HistogramBucket
+	if err := verify(mc); err != nil {
+		return err
+	}
+	extension.GetMetricReporter("prometheus", mc.ToReporterConfig())
+	return nil
 }
 
 type MetricConfigBuilder struct {
@@ -49,40 +78,7 @@ func NewMetricConfigBuilder() *MetricConfigBuilder {
 	return &MetricConfigBuilder{metricConfig: &MetricConfig{}}
 }
 
-// nolint
-func (mcb *MetricConfigBuilder) SetReporters(reporters []string) *MetricConfigBuilder {
-	mcb.metricConfig.Reporters = reporters
-	return mcb
-}
-
-// nolint
-func (mcb *MetricConfigBuilder) AddReporter(reporter string) *MetricConfigBuilder {
-	if mcb.metricConfig.Reporters == nil {
-		mcb.metricConfig.Reporters = make([]string, 0)
-	}
-	mcb.metricConfig.Reporters = append(mcb.metricConfig.Reporters, reporter)
-	return mcb
-}
-
-// nolint
-func (mcb *MetricConfigBuilder) SetHistogramBucket(histogramBucket []float64) *MetricConfigBuilder {
-	mcb.metricConfig.HistogramBucket = histogramBucket
-	return mcb
-}
-
-// nolint
-func (mcb *MetricConfigBuilder) AddBucket(bucket float64) *MetricConfigBuilder {
-	if mcb.metricConfig.HistogramBucket == nil {
-		mcb.metricConfig.HistogramBucket = make([]float64, 0)
-	}
-	mcb.metricConfig.HistogramBucket = append(mcb.metricConfig.HistogramBucket, bucket)
-	return mcb
-}
-
 // nolint
 func (mcb *MetricConfigBuilder) Build() *MetricConfig {
-	if err := mcb.metricConfig.Init(); err != nil {
-		panic(err)
-	}
 	return mcb.metricConfig
 }

config/provider_config.go

@@ -36,7 +36,7 @@ type ProviderConfig struct {
 	// Deprecated Register whether registration is required
 	Register bool `yaml:"register" json:"register" property:"register"`
 	// RegistryIDs is registry ids list
-	RegistryIDs []string `yaml:"registryIDs" json:"registryIDs" property:"registryIDs"`
+	RegistryIDs []string `yaml:"registry-ids" json:"registry-ids" property:"registry-ids"`
 	// Services services
 	Services map[string]*ServiceConfig `yaml:"services" json:"services,omitempty" property:"services"`
 

config/reference_config.go

@@ -50,7 +50,7 @@ type ReferenceConfig struct {
 	URL            string            `yaml:"url"  json:"url,omitempty" property:"url"`
 	Filter         string            `yaml:"filter" json:"filter,omitempty" property:"filter"`
 	Protocol       string            `default:"dubbo"  yaml:"protocol"  json:"protocol,omitempty" property:"protocol"`
-	RegistryIDs    []string          `yaml:"registryIDs"  json:"registryIDs,omitempty"  property:"registryIDs"`
+	RegistryIDs    []string          `yaml:"registry-ids"  json:"registry-ids,omitempty"  property:"registry-ids"`
 	Cluster        string            `yaml:"cluster"  json:"cluster,omitempty" property:"cluster"`
 	Loadbalance    string            `yaml:"loadbalance"  json:"loadbalance,omitempty" property:"loadbalance"`
 	Retries        string            `yaml:"retries"  json:"retries,omitempty" property:"retries"`

config/router_config.go

@@ -24,6 +24,7 @@ import (
 import (
 	_ "dubbo.apache.org/dubbo-go/v3/cluster/router/chain"
 	"dubbo.apache.org/dubbo-go/v3/common/constant"
+	_ "dubbo.apache.org/dubbo-go/v3/metrics/prometheus"
 )
 
 // RouterConfig is the configuration of the router.

config/service_config.go

@@ -50,9 +50,9 @@ import (
 type ServiceConfig struct {
 	id                          string
 	Filter                      string            `yaml:"filter" json:"filter,omitempty" property:"filter"`
-	ProtocolIDs                 []string          `default:"[\"dubbo\"]"  validate:"required"  yaml:"protocolIDs"  json:"protocolIDs,omitempty" property:"protocolIDs"` // multi protocolIDs support, split by ','
+	ProtocolIDs                 []string          `default:"[\"dubbo\"]"  validate:"required"  yaml:"protocol-ids"  json:"protocol-ids,omitempty" property:"protocol-ids"` // multi protocolIDs support, split by ','
 	Interface                   string            `validate:"required"  yaml:"interface"  json:"interface,omitempty" property:"interface"`
-	RegistryIDs                 []string          `yaml:"registryIDs"  json:"registryIDs,omitempty"  property:"registryIDs"`
+	RegistryIDs                 []string          `yaml:"registry-ids"  json:"registry-ids,omitempty"  property:"registry-ids"`
 	Cluster                     string            `default:"failover" yaml:"cluster"  json:"cluster,omitempty" property:"cluster"`
 	Loadbalance                 string            `default:"random" yaml:"loadbalance"  json:"loadbalance,omitempty"  property:"loadbalance"`
 	Group                       string            `yaml:"group"  json:"group,omitempty" property:"group"`

config/testdata/application.yaml

@@ -26,10 +26,10 @@ dubbo:
   services:
     helloService:
       interface: org.dubbo.service.HelloService
-      registryIDs: nacos,zk
+      registry-ids: nacos,zk
     orderService:
       interface: org.dubbo.service.OrderService
-      registryIDs: nacos
+      registry-ids: nacos
   provider:
     register: true
     services:

config/testdata/config/app/application.yaml

@@ -14,7 +14,7 @@ dubbo:
         interface: org.github.dubbo.HelloService # must be compatible with grpc or dubbo-java
   provider:
     register: true
-    registryIDs: nacos
+    registry-ids: nacos
     services:
       helloService:
         protocol: dubbo

config/testdata/config/provider/application.yaml

@@ -6,12 +6,12 @@ dubbo:
       address: nacos://127.0.0.1:8848
   provider:
     register: true
-    registryIDs:
+    registry-ids:
      - nacos
      - zk
     services:
       helloService:
         interface: org.dubbo.service.HelloService
-        registryIDs: nacos,zk
+        registry-ids: nacos,zk
       orderService:
         interface: org.dubbo.service.OrderService

config/testdata/config/provider/registry_application.yaml

@@ -4,10 +4,10 @@ dubbo:
       timeout: 3s
       address: naocs://127.0.0.1:8848
   provider:
-    registryIDs: nacos
+    registry-ids: nacos
     services:
       HelloService:
         interface: org.dubbo.service.HelloService
-        registryIDs: nacos,zk
+        registry-ids: nacos,zk
       OrderService:
         interface: org.dubbo.service.OrderService

config/testdata/consumer_config.yml

@@ -33,7 +33,7 @@ registries :
 
 references:
   "UserProvider":
-    registryIDs: "hangzhouzk,shanghaizk"
+    registry-ids: "hangzhouzk,shanghaizk"
     filter: ""
     protocol : "dubbo"
     version: "1.0"

config/testdata/consumer_config_with_configcenter.yml

@@ -7,7 +7,7 @@ config_center:
   address: "127.0.0.1"
 references:
   "UserProvider":
-    registryIDs: "hangzhouzk,shanghaizk"
+    registry-ids: "hangzhouzk,shanghaizk"
     filter: ""
     protocol : "dubbo"
     interface : "com.ikurento.user.UserProvider"

config/testdata/consumer_config_withoutProtocol.yml

@@ -33,7 +33,7 @@ registries :
 
 references:
   "UserProvider":
-    registryIDs: "hangzhouzk,shanghaizk"
+    registry-ids: "hangzhouzk,shanghaizk"
     filter: ""
     version: "1.0"
     group: "as"

config/testdata/provider_config.yml

@@ -27,7 +27,7 @@ registries :
 
 services:
   "UserProvider":
-    registryIDs: "hangzhouzk,shanghaizk"
+    registry-ids: "hangzhouzk,shanghaizk"
     filter: ""
     # the name of limiter
     tps.limiter: "default"

config/testdata/provider_config_withoutProtocol.yml

@@ -27,7 +27,7 @@ registries :
 
 services:
   "UserProvider":
-    registryIDs: "hangzhouzk,shanghaizk"
+    registry-ids: "hangzhouzk,shanghaizk"
     filter: ""
     # equivalent to interface of dubbo.xml
     interface : "com.ikurento.user.UserProvider"

config_center/apollo/mockDubbogo.yaml.json

@@ -0,0 +1 @@
+{"appId":"testApplication_yang","cluster":"default","namespaceName":"mockDubbogo.yaml","releaseKey":"20191104105242-0f13805d89f834a4","configurations":{"registries.hangzhouzk.username":"11111"}}

filter/metrics/filter.go

@@ -74,7 +74,7 @@ func (p *Filter) OnResponse(ctx context.Context, res protocol.Result, invoker pr
 func newFilter() filter.Filter {
 	if metricFilterInstance == nil {
 		reporters := make([]metrics.Reporter, 0, 1)
-		reporters = append(reporters, extension.GetMetricReporter("prometheus"))
+		reporters = append(reporters, extension.GetMetricReporter("prometheus", metrics.NewReporterConfig()))
 		metricFilterInstance = &Filter{
 			reporters: reporters,
 		}

filter/metrics/filter_test.go

@@ -32,7 +32,6 @@ import (
 import (
 	"dubbo.apache.org/dubbo-go/v3/common"
 	"dubbo.apache.org/dubbo-go/v3/common/extension"
-	"dubbo.apache.org/dubbo-go/v3/config"
 	"dubbo.apache.org/dubbo-go/v3/metrics"
 	_ "dubbo.apache.org/dubbo-go/v3/metrics/prometheus"
 	"dubbo.apache.org/dubbo-go/v3/protocol"
@@ -41,9 +40,8 @@ import (
 
 func TestMetricsFilterInvoke(t *testing.T) {
 	// prepare the mock reporter
-	config.GetMetricConfig().Reporters = []string{"mock"}
 	mk := &mockReporter{}
-	extension.SetMetricReporter("mock", func() metrics.Reporter {
+	extension.SetMetricReporter("mock", func(config *metrics.ReporterConfig) metrics.Reporter {
 		return mk
 	})
 

go.mod

@@ -3,6 +3,7 @@ module dubbo.apache.org/dubbo-go/v3
 go 1.15
 
 require (
+	contrib.go.opencensus.io/exporter/prometheus v0.4.0
 	github.com/RoaringBitmap/roaring v0.7.1
 	github.com/Workiva/go-datastructures v1.0.52
 	github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5
@@ -19,7 +20,6 @@ require (
 	github.com/go-co-op/gocron v1.9.0
 	github.com/go-playground/validator/v10 v10.9.0
 	github.com/go-resty/resty/v2 v2.3.0
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/mock v1.4.4
 	github.com/golang/protobuf v1.5.2
 	github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645
@@ -34,7 +34,6 @@ require (
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.11.0
-	github.com/prometheus/common v0.28.0 // indirect
 	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b
 	github.com/stretchr/testify v1.7.0
 	github.com/zouyx/agollo/v3 v3.4.5