Add Prometheus statistics and an example to showcase them using Grafana

api/server/prometheus_metrics.go

@@ -0,0 +1,9 @@
+package server
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+func (s *Server) handlePrometheusMetrics(c *gin.Context) {
+	s.Agent.PromHandler().ServeHTTP(c.Writer, c.Request)
+}

api/server/server.go

@@ -280,6 +280,7 @@ func (s *Server) bindHandlers(ctx context.Context) {
 	engine.GET("/", handlePing)
 	engine.GET("/version", handleVersion)
 	engine.GET("/stats", s.handleStats)
+	engine.GET("/metrics", s.handlePrometheusMetrics)
 
 	{
 		v1 := engine.Group("/v1")