Update tracing API

server/dnsanswers.go

@@ -9,6 +9,7 @@ import (
 	"golang.org/x/sync/errgroup"
 
 	"go.ntppool.org/common/logger"
+	"go.ntppool.org/common/tracing"
 	chdb "go.ntppool.org/data-api/chdb"
 	"go.ntppool.org/data-api/ntpdb"
 )
@@ -20,11 +21,12 @@ const pointSymbol = "‱"
 // const pointSymbol = "‰"
 
 func (srv *Server) dnsAnswers(c echo.Context) error {
-
 	log := logger.Setup()
-
 	ctx := c.Request().Context()
 
+	ctx, span := tracing.Tracer().Start(ctx, "dnsanswers")
+	defer span.End()
+
 	c.Response().Header().Set("Cache-Control", "max-age=20")
 
 	// conn, err := srv.chConn(ctx)

server/server.go

@@ -57,7 +57,7 @@ func NewServer(ctx context.Context, configFile string) (*Server, error) {
 		return nil, err
 	}
 
-	srv.tracer = tracing.NewTracer("data-api-tracer")
+	srv.tracer = tracing.Tracer()
 	return srv, nil
 }