37 lines
886 B
Go
37 lines
886 B
Go
|
package shard
|
||
|
|
|
||
|
|
import (
|
||
|
|
"errors"
|
||
|
|
|
||
|
|
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard/mode"
|
||
|
|
)
|
||
|
|
|
||
|
|
// errWriteCacheDisabled is returned when an operation on write-cache is performed,
|
||
|
|
// but write-cache is disabled.
|
||
|
|
var errWriteCacheDisabled = errors.New("write-cache is disabled")
|
||
|
|
|
||
|
|
// FlushWriteCache moves writecache in read-only mode and flushes all data from it.
|
||
|
|
// After the operation writecache will remain read-only mode.
|
||
|
|
func (s *Shard) FlushWriteCache() error {
|
||
|
|
if !s.hasWriteCache() {
|
||
|
|
return errWriteCacheDisabled
|
||
|
|
}
|
||
|
|
|
||
|
|
s.m.RLock()
|
||
|
|
defer s.m.RUnlock()
|
||
|
|
|
||
|
|
// To write data to the blobstor we need to write to the blobstor and the metabase.
|
||
|
|
if s.info.Mode.ReadOnly() {
|
||
|
|
return ErrReadOnlyMode
|
||
|
|
}
|
||
|
|
if s.info.Mode.NoMetabase() {
|
||
|
|
return ErrDegradedMode
|
||
|
|
}
|
||
|
|
|
||
|
|
if err := s.writeCache.SetMode(mode.ReadOnly); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
return s.writeCache.Flush()
|
||
|
|
}
|