[#231] metabase: Add container lister

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2020-12-03 14:29:33 +03:00
parent 3a37eda410
commit a1cb48f800
2 changed files with 85 additions and 0 deletions

View file

@ -0,0 +1,49 @@
package meta
import (
"strings"
"github.com/nspcc-dev/neofs-api-go/pkg/container"
"go.etcd.io/bbolt"
)
func (db *DB) Containers() (list []*container.ID, err error) {
err = db.boltDB.View(func(tx *bbolt.Tx) error {
list, err = db.containers(tx)
return err
})
return list, err
}
func (db *DB) containers(tx *bbolt.Tx) ([]*container.ID, error) {
result := make([]*container.ID, 0)
err := tx.ForEach(func(name []byte, _ *bbolt.Bucket) error {
id, err := parseContainerID(name)
if err != nil {
return err
}
if id != nil {
result = append(result, id)
}
return nil
})
return result, err
}
func parseContainerID(name []byte) (*container.ID, error) {
strName := string(name)
if strings.Contains(strName, "_") {
return nil, nil
}
id := container.NewID()
return id, id.Parse(strName)
}

View file

@ -0,0 +1,36 @@
package meta_test
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestDB_Containers(t *testing.T) {
db := newDB(t)
defer releaseDB(db)
const N = 10
cids := make(map[string]int, N)
for i := 0; i < N; i++ {
obj := generateRawObject(t)
cids[obj.ContainerID().String()] = 0
err := db.Put(obj.Object(), nil)
require.NoError(t, err)
}
lst, err := db.Containers()
require.NoError(t, err)
for _, cid := range lst {
i, ok := cids[cid.String()]
require.True(t, ok)
require.Equal(t, 0, i)
cids[cid.String()] = 1
}
}