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[#1559] local_object_storage: Move shard.Mode to a separate package

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Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-06-28 17:05:08 +03:00 • committed by fyrchik
parent d8ba954aff
commit 339864b720
26 changed files with 134 additions and 133 deletions
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47
pkg/local_object_storage/shard/mode.go
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@ -3,62 +3,23 @@ package shard
import (
"errors"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/writecache"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard/mode"
)
// Mode represents enumeration of Shard work modes.
type Mode uint32
// ErrReadOnlyMode is returned when it is impossible to apply operation
// that changes shard's memory due to the "read-only" shard's mode.
var ErrReadOnlyMode = errors.New("shard is in read-only mode")
const (
// ModeReadWrite is a Mode value for shard that is available
// for read and write operations. Default shard mode.
ModeReadWrite Mode = iota
// ModeReadOnly is a Mode value for shard that does not
// accept write operation but is readable.
ModeReadOnly
// ModeDegraded is a Mode value for shard that is set automatically
// after a certain number of errors is encountered. It is the same as
// `ModeReadOnly` but also enables fallback algorithms for getting object
// in case metabase is corrupted.
ModeDegraded
)
func (m Mode) String() string {
switch m {
default:
return "UNDEFINED"
case ModeReadWrite:
return "READ_WRITE"
case ModeReadOnly:
return "READ_ONLY"
case ModeDegraded:
return "DEGRADED"
}
}
// SetMode sets mode of the shard.
//
// Returns any error encountered that did not allow
// setting shard mode.
func (s *Shard) SetMode(m Mode) error {
func (s *Shard) SetMode(m mode.Mode) error {
s.m.Lock()
defer s.m.Unlock()
if s.hasWriteCache() {
switch m {
case ModeReadOnly:
s.writeCache.SetMode(writecache.ModeReadOnly)
case ModeDegraded:
s.writeCache.SetMode(writecache.ModeDegraded)
case ModeReadWrite:
s.writeCache.SetMode(writecache.ModeReadWrite)
}
s.writeCache.SetMode(m)
}
s.info.Mode = m
@ -67,7 +28,7 @@ func (s *Shard) SetMode(m Mode) error {
}
// GetMode returns mode of the shard.
func (s *Shard) GetMode() Mode {
func (s *Shard) GetMode() mode.Mode {
s.m.RLock()
defer s.m.RUnlock()