[#255] services/audit: Define Report structure and Reporter interface

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/services/audit/report.go

@@ -0,0 +1,33 @@
+package audit
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/pkg/audit"
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
+)
+
+// Report tracks the progress of auditing container data.
+type Report struct {
+	res *audit.Result
+}
+
+// Reporter is an interface of the entity that records
+// the data audit report.
+type Reporter interface {
+	WriteReport(r *Report) error
+}
+
+// NewReport creates and returns blank Report instance.
+func NewReport(cid *container.ID) *Report {
+	rep := &Report{
+		res: audit.NewResult(),
+	}
+
+	rep.res.SetContainerID(cid)
+
+	return rep
+}
+
+// Result forms the structure of the data audit result.
+func (r *Report) Result() *audit.Result {
+	return r.res
+}