Convert IDP service to service trace provider.

This converts the IDP service to use the service trace provider.

services/idp/pkg/middleware/static.go

@@ -4,14 +4,13 @@ import (
 	"net/http"
 	"strings"
 
-	idpTracing "github.com/owncloud/ocis/v2/services/idp/pkg/tracing"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/trace"
 )
 
 // Static is a middleware that serves static assets.
-func Static(root string, fs http.FileSystem) func(http.Handler) http.Handler {
+func Static(root string, fs http.FileSystem, tp trace.TracerProvider) func(http.Handler) http.Handler {
 	if !strings.HasSuffix(root, "/") {
 		root = root + "/"
 	}
@@ -28,7 +27,7 @@ func Static(root string, fs http.FileSystem) func(http.Handler) http.Handler {
 			spanOpts := []trace.SpanStartOption{
 				trace.WithSpanKind(trace.SpanKindServer),
 			}
-			ctx, span := idpTracing.TraceProvider.Tracer("idp").Start(r.Context(), "serve static asset", spanOpts...)
+			ctx, span := tp.Tracer("idp").Start(r.Context(), "serve static asset", spanOpts...)
 			defer span.End()
 			r = r.WithContext(ctx)