[#199] Make exist check on all primary buckets in metabase

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2020-11-27 10:59:47 +03:00
parent e478c0d024
commit f6387a9b94
2 changed files with 95 additions and 27 deletions

View file

@ -9,27 +9,41 @@ import (
// returns true if addr is in primary index or false if it is not.
func (db *DB) Exists(addr *objectSDK.Address) (exists bool, err error) {
err = db.boltDB.View(func(tx *bbolt.Tx) error {
// check graveyard first
if inGraveyard(tx, addr) {
return ErrAlreadyRemoved
}
exists, err = db.exists(tx, addr)
// if graveyard is empty, then check if object exists in primary bucket
primaryBucket := tx.Bucket(primaryBucketName(addr.ContainerID()))
if primaryBucket == nil {
return nil
}
// using `get` as `exists`: https://github.com/boltdb/bolt/issues/321
val := primaryBucket.Get(objectKey(addr.ObjectID()))
exists = len(val) != 0
return nil
return err
})
return exists, err
}
func (db *DB) exists(tx *bbolt.Tx, addr *objectSDK.Address) (exists bool, err error) {
// check graveyard first
if inGraveyard(tx, addr) {
return false, ErrAlreadyRemoved
}
objKey := objectKey(addr.ObjectID())
// if graveyard is empty, then check if object exists in primary bucket
if inBucket(tx, primaryBucketName(addr.ContainerID()), objKey) {
return true, nil
}
// if primary bucket is empty, then check if object exists in parent bucket
if inBucket(tx, parentBucketName(addr.ContainerID()), objKey) {
return true, nil
}
// if parent bucket is empty, then check if object exists in tombstone bucket
if inBucket(tx, tombstoneBucketName(addr.ContainerID()), objKey) {
return true, nil
}
// if parent bucket is empty, then check if object exists in storage group bucket
return inBucket(tx, storageGroupBucketName(addr.ContainerID()), objKey), nil
}
// inGraveyard returns true if object was marked as removed.
func inGraveyard(tx *bbolt.Tx, addr *objectSDK.Address) bool {
graveyard := tx.Bucket(graveyardBucketName)
@ -41,3 +55,16 @@ func inGraveyard(tx *bbolt.Tx, addr *objectSDK.Address) bool {
return len(tombstone) != 0
}
// inBucket checks if key <key> is present in bucket <name>.
func inBucket(tx *bbolt.Tx, name, key []byte) bool {
bkt := tx.Bucket(name)
if bkt == nil {
return false
}
// using `get` as `exists`: https://github.com/boltdb/bolt/issues/321
val := bkt.Get(key)
return len(val) != 0
}

View file

@ -3,7 +3,7 @@ package meta_test
import (
"testing"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/stretchr/testify/require"
)
@ -11,19 +11,60 @@ func TestDB_Exists(t *testing.T) {
db := newDB(t)
defer releaseDB(db)
raw := generateRawObject(t)
addAttribute(raw, "foo", "bar")
obj := object.NewFromV2(raw.ToV2())
exists, err := db.Exists(obj.Address())
t.Run("no object", func(t *testing.T) {
nonExist := generateRawObject(t)
exists, err := db.Exists(nonExist.Object().Address())
require.NoError(t, err)
require.False(t, exists)
})
err = db.Put(obj, nil)
t.Run("regular object", func(t *testing.T) {
regular := generateRawObject(t)
err := db.Put(regular.Object(), nil)
require.NoError(t, err)
exists, err = db.Exists(obj.Address())
exists, err := db.Exists(regular.Object().Address())
require.NoError(t, err)
require.True(t, exists)
})
t.Run("tombstone object", func(t *testing.T) {
ts := generateRawObject(t)
ts.SetType(objectSDK.TypeTombstone)
err := db.Put(ts.Object(), nil)
require.NoError(t, err)
exists, err := db.Exists(ts.Object().Address())
require.NoError(t, err)
require.True(t, exists)
})
t.Run("storage group object", func(t *testing.T) {
sg := generateRawObject(t)
sg.SetType(objectSDK.TypeStorageGroup)
err := db.Put(sg.Object(), nil)
require.NoError(t, err)
exists, err := db.Exists(sg.Object().Address())
require.NoError(t, err)
require.True(t, exists)
})
t.Run("virtual object", func(t *testing.T) {
cid := testCID()
parent := generateRawObjectWithCID(t, cid)
child := generateRawObjectWithCID(t, cid)
child.SetParent(parent.Object().SDK())
child.SetParentID(parent.Object().Address().ObjectID())
err := db.Put(child.Object(), nil)
require.NoError(t, err)
exists, err := db.Exists(parent.Object().Address())
require.NoError(t, err)
require.True(t, exists)
})
}