TrueCloudLab/frostfs-node
20
1
Fork 27
Code Issues 101 Pull requests 5 Projects Releases 1 Activity Actions

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

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

37
pkg/local_object_storage/shard/mode.go
View file

@ -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))