feat Prometheus

app/app.go

@@ -21,11 +21,11 @@ func (p *Program) Init(_ svc.Environment) error {
 	}
 	p.moduleList = append(p.moduleList, base)
 	p.moduleList = append(p.moduleList, (&module.DB{}).Bind(config.Get().DB))
-	p.moduleList = append(p.moduleList, &ModulePrometheus{})
 	p.moduleList = append(p.moduleList, &ModuleWebServer{})
 	p.moduleList = append(p.moduleList, &ModuleWebsocketServer{})
 	p.moduleList = append(p.moduleList, &ModuleGrpcServer{})
 	p.moduleList = append(p.moduleList, &ModuleLoginQueue{})
+	p.moduleList = append(p.moduleList, (&module.Prometheus{}).Bind(config.Get().Metric))
 	p.moduleList = append(p.moduleList, (&module.Tracer{}).Bind(config.Get().Metric, common.KeyDiscoverServiceNameGateway))
 
 	for i, m := range p.moduleList {

app/prometheus.go

@@ -1,61 +0,0 @@
-package app
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"git.hlsq.asia/mmorpg/service-common/log"
-	"git.hlsq.asia/mmorpg/service-common/module"
-	"git.hlsq.asia/mmorpg/service-gateway/config"
-	"git.hlsq.asia/mmorpg/service-gateway/internal/global"
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
-	"net/http"
-	"sync"
-)
-
-// ModulePrometheus 普罗米修斯模块
-type ModulePrometheus struct {
-	wg     *sync.WaitGroup
-	server *http.Server
-}
-
-func (m *ModulePrometheus) Init() error {
-	m.wg = &sync.WaitGroup{}
-
-	global.OnlineUsersGauge = prometheus.NewGauge(prometheus.GaugeOpts{
-		Name: "gateway_online_users_total",
-		Help: "Total number of online users in gateway",
-	})
-	prometheus.MustRegister(global.OnlineUsersGauge)
-
-	return nil
-}
-
-func (m *ModulePrometheus) Start() error {
-	m.wg.Add(1)
-	go func() {
-		defer m.wg.Done()
-		m.server = &http.Server{
-			Addr:    fmt.Sprintf("%v:%v", config.Get().Metric.Prometheus.Address, config.Get().Metric.Prometheus.Port),
-			Handler: promhttp.Handler(),
-		}
-		if err := m.server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
-			log.Errorf("prometheus server failed: %v", err.Error())
-		}
-		log.Infof("prometheus server stop.")
-	}()
-	return nil
-}
-
-func (m *ModulePrometheus) Stop() error {
-	if err := m.server.Shutdown(context.Background()); err != nil {
-		log.Errorf("stop prometheus server failed: %v", err)
-	}
-	m.wg.Wait()
-	return nil
-}
-
-func (m *ModulePrometheus) Bind(_ ...any) module.Module {
-	return m
-}

go.mod

@@ -4,7 +4,7 @@ go 1.24.0
 
 require (
 	bou.ke/monkey v1.0.2
-	git.hlsq.asia/mmorpg/service-common v0.0.0-20260116140135-e59d106700e3
+	git.hlsq.asia/mmorpg/service-common v0.0.0-20260116143417-d944729ad0e5
 	github.com/alicebob/miniredis/v2 v2.35.0
 	github.com/gin-contrib/cors v1.7.6
 	github.com/gin-gonic/gin v1.11.0

go.sum

@@ -2,8 +2,8 @@ bou.ke/monkey v1.0.2 h1:kWcnsrCNUatbxncxR/ThdYqbytgOIArtYWqcQLQzKLI=
 bou.ke/monkey v1.0.2/go.mod h1:OqickVX3tNx6t33n1xvtTtu85YN5s6cKwVug+oHMaIA=
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
-git.hlsq.asia/mmorpg/service-common v0.0.0-20260116140135-e59d106700e3 h1:3VOikwIBiZ1npwqfLeK558Uc6panZbtFkH5T1uoWPmk=
+git.hlsq.asia/mmorpg/service-common v0.0.0-20260116143417-d944729ad0e5 h1:gkPNZ/OiXQhtiqRMdLrL5Zw580zgb9082jkZQqP71Fk=
-git.hlsq.asia/mmorpg/service-common v0.0.0-20260116140135-e59d106700e3/go.mod h1:Dazg+4woCv9Jk7jgT2qUSGWhZOXx/0WYfJO+FCUDyhw=
+git.hlsq.asia/mmorpg/service-common v0.0.0-20260116143417-d944729ad0e5/go.mod h1:Dazg+4woCv9Jk7jgT2qUSGWhZOXx/0WYfJO+FCUDyhw=
 github.com/BurntSushi/toml v1.2.0 h1:Rt8g24XnyGTyglgET/PRUNlrUeu9F5L+7FilkXfZgs0=
 github.com/BurntSushi/toml v1.2.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/alicebob/miniredis/v2 v2.35.0 h1:QwLphYqCEAo1eu1TqPRN2jgVMPBweeQcR21jeqDCONI=

internal/global/global.go

@@ -1,7 +1,5 @@
 package global
 
-import "github.com/prometheus/client_golang/prometheus"
-
 const (
 	KeyGatewayAccessToken  = "gateway:token:access:%v"
 	KeyGatewayRefreshToken = "gateway:token:refresh:%v"
@@ -14,7 +12,3 @@ const (
 	MaxOnlineSize  = 100 // 最大在线人数
 	MaxQueueUpSize = 100 // 最大排队人数
 )
-
-var (
-	OnlineUsersGauge prometheus.Gauge
-)

internal/global/metric.go

@@ -0,0 +1,19 @@
+package global
+
+import (
+	"git.hlsq.asia/mmorpg/service-common/log"
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+var (
+	OnlineUsersGauge prometheus.Gauge
+)
+
+func init() {
+	log.Infof("Init prometheus metric...")
+	OnlineUsersGauge = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "online_users",
+		Help: "Total number of online users",
+	})
+	prometheus.MustRegister(OnlineUsersGauge)
+}