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[#1057] shard: Make shard to have only two mode

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Shard's mode was not used in the Node, so added only two modes whose roles
are clear. More modes will be added in the future.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
This commit is contained in:
Pavel Karpy 2021-12-27 14:03:15 +03:00 committed by Pavel Karpy
parent 2109211c55
commit 4f756bf121
1 changed files with 14 additions and 23 deletions
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37
pkg/local_object_storage/shard/mode.go
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@ -1,50 +1,41 @@
package shard
import "errors"
// 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")
// TODO: more detailed description of shard modes.
const (
_ Mode = iota
// ModeReadWrite is a Mode value for shard that is available
// for read and write operations. Default shard mode.
ModeReadWrite Mode = iota
// ModeActive is a Mode value for active shard.
ModeActive
// ModeInactive is a Mode value for inactive shard.
ModeInactive
// ModeReadOnly is a Mode value for read-only shard.
// ModeReadOnly is a Mode value for shard that does not
// accept write operation but is readable.
ModeReadOnly
// ModeFault is a Mode value for faulty shard.
ModeFault
// ModeEvacuate is a Mode value for evacuating shard.
ModeEvacuate
)
func (m Mode) String() string {
switch m {
default:
return "UNDEFINED"
case ModeActive:
return "ACTIVE"
case ModeInactive:
return "INACTIVE"
case ModeReadWrite:
return "READ_WRITE"
case ModeReadOnly:
return "READ_ONLY"
case ModeFault:
return "FAULT"
case ModeEvacuate:
return "EVACUATE"
}
}
// SetMode sets mode of the shard.
//
// Returns any error encountered that did not allow
// to set shard mode.
// setting shard mode.
func (s *Shard) SetMode(m Mode) error {
s.mode.Store(uint32(m))