From a8d76f2ebb0fe24385950976ed0e1fa6704e94aa Mon Sep 17 00:00:00 2001
From: Alex Vanin <alexey@nspcc.ru>
Date: Fri, 27 Nov 2020 12:01:44 +0300
Subject: [PATCH] [#199] Implement ObjectID selection filter in metabase

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
---
 .../metabase/v2/select.go                     | 37 ++++++++++-
 .../metabase/v2/select_test.go                | 64 ++++++++++++++++++-
 2 files changed, 97 insertions(+), 4 deletions(-)

diff --git a/pkg/local_object_storage/metabase/v2/select.go b/pkg/local_object_storage/metabase/v2/select.go
index d549addb..ec074244 100644
--- a/pkg/local_object_storage/metabase/v2/select.go
+++ b/pkg/local_object_storage/metabase/v2/select.go
@@ -131,7 +131,7 @@ func (db *DB) selectFastFilter(
 
 	switch f.Header() {
 	case v2object.FilterHeaderObjectID:
-		// todo: implement me
+		db.selectObjectID(tx, f, prefix, to, fNum)
 	case v2object.FilterHeaderOwnerID:
 		bucketName := ownerBucketName(cid)
 		db.selectFromFKBT(tx, bucketName, f, prefix, to, fNum)
@@ -252,6 +252,41 @@ func (db *DB) selectFromList(
 	}
 }
 
+// selectObjectID processes objectID filter with in-place optimizations.
+func (db *DB) selectObjectID(
+	tx *bbolt.Tx,
+	f object.SearchFilter,
+	prefix string,
+	to map[string]int, // resulting cache
+	fNum int, // index of filter
+) {
+	switch f.Operation() {
+	case object.MatchStringEqual:
+	default:
+		db.log.Debug("unknown operation", zap.Uint32("operation", uint32(f.Operation())))
+	}
+
+	// warning: it is in-place optimization and works only for MatchStringEQ,
+	// for NotEQ you should iterate over bkt and apply matchFunc
+
+	addrStr := prefix + f.Value()
+	addr := object.NewAddress()
+
+	err := addr.Parse(addrStr)
+	if err != nil {
+		db.log.Debug("can't decode object id address",
+			zap.String("addr", addrStr),
+			zap.String("error", err.Error()))
+
+		return
+	}
+
+	ok, err := db.exists(tx, addr)
+	if err == nil && ok {
+		markAddressInCache(to, fNum, addrStr)
+	}
+}
+
 // matchSlowFilters return true if object header is matched by all slow filters.
 func (db *DB) matchSlowFilters(tx *bbolt.Tx, addr *object.Address, f object.SearchFilters) bool {
 	if len(f) == 0 {
diff --git a/pkg/local_object_storage/metabase/v2/select_test.go b/pkg/local_object_storage/metabase/v2/select_test.go
index 6526d351..4d3b29a9 100644
--- a/pkg/local_object_storage/metabase/v2/select_test.go
+++ b/pkg/local_object_storage/metabase/v2/select_test.go
@@ -107,9 +107,6 @@ func TestDB_SelectRootPhyParent(t *testing.T) {
 	err = db.Put(link.Object(), nil)
 	require.NoError(t, err)
 
-	// printDB(meta.ExtractDB(db))
-	// return
-
 	t.Run("root objects", func(t *testing.T) {
 		fs := generateSearchFilter(cid)
 		fs.AddRootFilter()
@@ -300,3 +297,64 @@ func generateSearchFilter(cid *container.ID) objectSDK.SearchFilters {
 
 	return fs
 }
+
+func TestDB_SelectObjectID(t *testing.T) {
+	db := newDB(t)
+	defer releaseDB(db)
+
+	cid := testCID()
+
+	// prepare
+
+	parent := generateRawObjectWithCID(t, cid)
+
+	regular := generateRawObjectWithCID(t, cid)
+	regular.SetParentID(parent.ID())
+	regular.SetParent(parent.Object().SDK())
+
+	err := db.Put(regular.Object(), nil)
+	require.NoError(t, err)
+
+	ts := generateRawObjectWithCID(t, cid)
+	ts.SetType(objectSDK.TypeTombstone)
+	err = db.Put(ts.Object(), nil)
+	require.NoError(t, err)
+
+	sg := generateRawObjectWithCID(t, cid)
+	sg.SetType(objectSDK.TypeStorageGroup)
+	err = db.Put(sg.Object(), nil)
+	require.NoError(t, err)
+
+	t.Run("not found objects", func(t *testing.T) {
+		raw := generateRawObjectWithCID(t, cid)
+
+		fs := generateSearchFilter(cid)
+		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, raw.ID())
+
+		testSelect(t, db, fs)
+	})
+
+	t.Run("regular objects", func(t *testing.T) {
+		fs := generateSearchFilter(cid)
+		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, regular.ID())
+		testSelect(t, db, fs, regular.Object().Address())
+	})
+
+	t.Run("tombstone objects", func(t *testing.T) {
+		fs := generateSearchFilter(cid)
+		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, ts.ID())
+		testSelect(t, db, fs, ts.Object().Address())
+	})
+
+	t.Run("storage group objects", func(t *testing.T) {
+		fs := generateSearchFilter(cid)
+		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, sg.ID())
+		testSelect(t, db, fs, sg.Object().Address())
+	})
+
+	t.Run("storage group objects", func(t *testing.T) {
+		fs := generateSearchFilter(cid)
+		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, parent.ID())
+		testSelect(t, db, fs, parent.Object().Address())
+	})
+}