frostfs-node/pkg/local_object_storage/metabase/db.go
Alex Vanin 6280d075b9 [] Remove childfree search attribute
With updated specification of object related operation
we don't have this search attribute any more and we
should not use functions related to this attribute.

This commit breaks object service logic, however it will
be fixed later.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
2020-11-30 10:44:15 +03:00

92 lines
1.7 KiB
Go

package meta
import (
"github.com/nspcc-dev/neofs-api-go/pkg/object"
v2object "github.com/nspcc-dev/neofs-api-go/v2/object"
"github.com/nspcc-dev/neofs-node/pkg/util/logger"
"go.etcd.io/bbolt"
"go.uber.org/zap"
)
// DB represents local metabase of storage node.
type DB struct {
path string
*cfg
matchers map[object.SearchMatchType]func(string, string, string) bool
}
// Option is an option of DB constructor.
type Option func(*cfg)
type cfg struct {
boltDB *bbolt.DB
log *logger.Logger
}
func defaultCfg() *cfg {
return &cfg{
log: zap.L(),
}
}
// NewDB creates, initializes and returns DB instance.
func NewDB(opts ...Option) *DB {
c := defaultCfg()
for i := range opts {
opts[i](c)
}
return &DB{
path: c.boltDB.Path(),
cfg: c,
matchers: map[object.SearchMatchType]func(string, string, string) bool{
object.MatchUnknown: unknownMatcher,
object.MatchStringEqual: stringEqualMatcher,
},
}
}
func (db *DB) Close() error {
return db.boltDB.Close()
}
// Path returns the path to meta database.
func (db *DB) Path() string {
return db.path
}
func stringEqualMatcher(key, objVal, filterVal string) bool {
switch key {
default:
return objVal == filterVal
case v2object.FilterPropertyPhy, v2object.FilterPropertyRoot:
return true
}
}
func unknownMatcher(key, _, _ string) bool {
switch key {
default:
return false
case v2object.FilterPropertyPhy, v2object.FilterPropertyRoot:
return true
}
}
// FromBoltDB returns option to construct DB from BoltDB instance.
func FromBoltDB(db *bbolt.DB) Option {
return func(c *cfg) {
c.boltDB = db
}
}
// WithLogger returns option to set logger of DB.
func WithLogger(l *logger.Logger) Option {
return func(c *cfg) {
c.log = l
}
}