Add Inner Ring code

pkg/util/profiler/server.go

@@ -0,0 +1,62 @@
+package profiler
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/spf13/viper"
+	"go.uber.org/zap"
+)
+
+type (
+	// Server is an interface of server.
+	server interface {
+		serve(ctx context.Context) error
+		shutdown(ctx context.Context) error
+	}
+
+	contextServer struct {
+		logger *zap.Logger
+		server *http.Server
+	}
+
+	params struct {
+		Address string
+		Name    string
+		Config  *viper.Viper
+		Logger  *zap.Logger
+		Handler http.Handler
+	}
+)
+
+func newServer(p params) server {
+	return &contextServer{
+		logger: p.Logger,
+		server: &http.Server{
+			Addr:              p.Address,
+			Handler:           p.Handler,
+			ReadTimeout:       p.Config.GetDuration(p.Name + ".read_timeout"),
+			ReadHeaderTimeout: p.Config.GetDuration(p.Name + ".read_header_timeout"),
+			WriteTimeout:      p.Config.GetDuration(p.Name + ".write_timeout"),
+			IdleTimeout:       p.Config.GetDuration(p.Name + ".idle_timeout"),
+			MaxHeaderBytes:    p.Config.GetInt(p.Name + ".max_header_bytes"),
+		},
+	}
+}
+
+func (cs *contextServer) serve(ctx context.Context) error {
+	go func() {
+		<-ctx.Done()
+
+		if err := cs.server.Close(); err != nil {
+			cs.logger.Info("something went wrong",
+				zap.Error(err))
+		}
+	}()
+
+	return cs.server.ListenAndServe()
+}
+
+func (cs *contextServer) shutdown(ctx context.Context) error {
+	return cs.server.Shutdown(ctx)
+}