Add TracerProvider to VU State

cmd/test_load.go

@@ -75,6 +75,7 @@ func loadTest(gs *state.GlobalState, cmd *cobra.Command, args []string) (*loaded
 			val, ok := gs.Env[key]
 			return val, ok
 		},
+		TracerProvider: gs.TracerProvider,
 	}
 
 	test := &loadedTest{

js/runner.go

@@ -251,6 +251,7 @@ func (r *Runner) newVU(
 		Tags:           lib.NewVUStateTags(vu.Runner.RunTags),
 		Group:          r.defaultGroup,
 		BuiltinMetrics: r.preInitState.BuiltinMetrics,
+		TracerProvider: r.preInitState.TracerProvider,
 	}
 	vu.moduleVUImpl.state = vu.state
 	_ = vu.Runtime.Set("console", vu.Console)

lib/test_state.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/sirupsen/logrus"
 	"go.k6.io/k6/event"
+	"go.k6.io/k6/lib/trace"
 	"go.k6.io/k6/metrics"
 )
 
@@ -18,6 +19,7 @@ type TestPreInitState struct {
 	KeyLogger      io.Writer
 	LookupEnv      func(key string) (val string, ok bool)
 	Logger         logrus.FieldLogger
+	TracerProvider *trace.TracerProvider
 }
 
 // TestRunState contains the pre-init state as well as all of the state and

lib/vu_state.go

@@ -9,6 +9,7 @@ import (
 	"sync"
 
 	"github.com/sirupsen/logrus"
+	"go.opentelemetry.io/otel/trace"
 	"golang.org/x/time/rate"
 
 	"go.k6.io/k6/metrics"
@@ -19,6 +20,11 @@ type DialContexter interface {
 	DialContext(ctx context.Context, network, addr string) (net.Conn, error)
 }
 
+// TracerProvider provides methods for OTEL tracers initialization.
+type TracerProvider interface {
+	Tracer(name string, options ...trace.TracerOption) trace.Tracer
+}
+
 // State provides the volatile state for a VU.
 //
 // TODO: rename to VUState or, better yet, move to some other Go package outside
@@ -75,6 +81,9 @@ type State struct {
 	// unique globally across k6 instances (taking into account execution
 	// segments).
 	GetScenarioGlobalVUIter func() uint64
+
+	// Tracing instrumentation.
+	TracerProvider TracerProvider
 }
 
 // VUStateTags wraps the current VU's tags and ensures a thread-safe way to