Initial QSfera import

Server/services/ocs/pkg/service/v0/tracing.go

@@ -0,0 +1,23 @@
+package svc
+
+import (
+	"net/http"
+
+	"github.com/qsfera/server/pkg/middleware"
+)
+
+// NewTracing returns a service that instruments traces.
+func NewTracing(next Service) Service {
+	return tracing{
+		next: next,
+	}
+}
+
+type tracing struct {
+	next Service
+}
+
+// ServeHTTP implements the Service interface.
+func (t tracing) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	middleware.TraceContext(t.next).ServeHTTP(w, r)
+}