initial import

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

options.go

@@ -0,0 +1,25 @@
+package otel
+
+import (
+	tracesdk "go.opentelemetry.io/otel/sdk/trace"
+	"go.opentelemetry.io/otel/trace"
+	"go.unistack.org/micro/v4/tracer"
+)
+
+type providerKey struct{}
+
+func Provider(opts ...tracesdk.TracerProvider) tracer.Option {
+	return tracer.SetOption(providerKey{}, opts)
+}
+
+type providerOptionsKey struct{}
+
+func ProviderOptions(opts ...tracesdk.TracerProviderOption) tracer.Option {
+	return tracer.SetOption(providerOptionsKey{}, opts)
+}
+
+type tracerOptionsKey struct{}
+
+func TracerOptions(opts ...trace.TracerOption) tracer.Option {
+	return tracer.SetOption(tracerOptionsKey{}, opts)
+}