From ddd6c08b6aee8525b1017e80eba8a84646c37194 Mon Sep 17 00:00:00 2001
From: Pavel Karpy <carpawell@nspcc.ru>
Date: Wed, 16 Feb 2022 17:48:53 +0300
Subject: [PATCH] [#143] object/search: Add notification filter

It allows searching object whose notification epoch fits passed
`SearchMatchType` and a value.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
---
 object/search.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/object/search.go b/object/search.go
index 9dc40002..240a65d8 100644
--- a/object/search.go
+++ b/object/search.go
@@ -3,6 +3,7 @@ package object
 import (
 	"encoding/json"
 	"fmt"
+	"strconv"
 
 	v2object "github.com/nspcc-dev/neofs-api-go/v2/object"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
@@ -231,6 +232,10 @@ func (f *SearchFilters) AddObjectOwnerIDFilter(m SearchMatchType, id *owner.ID)
 	f.addReservedFilter(m, fKeyOwnerID, id)
 }
 
+func (f *SearchFilters) AddNotificationEpochFilter(epoch uint64) {
+	f.addFilter(MatchStringEqual, 0, v2object.SysAttributeTickEpoch, staticStringer(strconv.FormatUint(epoch, 10)))
+}
+
 func (f SearchFilters) ToV2() []*v2object.SearchFilter {
 	result := make([]*v2object.SearchFilter, 0, len(f))