cubefs/master/flash_group.go
2025-08-08 14:52:03 +08:00

753 lines
22 KiB
Go

// Copyright 2023 The CubeFS Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
package master
import (
"encoding/json"
"fmt"
"net/http"
"strconv"
"strings"
"sync"
"time"
"github.com/cubefs/cubefs/sdk/httpclient"
"github.com/cubefs/cubefs/cmd/common"
"github.com/cubefs/cubefs/proto"
"github.com/cubefs/cubefs/util/errors"
"github.com/cubefs/cubefs/util/exporter"
"github.com/cubefs/cubefs/util/log"
)
var defaultWaitClientUpdateFgTimeSec = 65
type flashGroupValue struct {
ID uint64
Slots []uint32 // FlashGroup's position in hasher ring, set by cli. value is range of crc32.
SlotStatus proto.SlotStatus
PendingSlots []uint32
Step uint32
Weight uint32
Status proto.FlashGroupStatus
}
type FlashGroup struct {
flashGroupValue
lock sync.RWMutex
flashNodes map[string]*FlashNode // key: FlashNodeAddr
}
func (fg *FlashGroup) GetStatus() (st proto.FlashGroupStatus) {
fg.lock.RLock()
st = fg.Status
fg.lock.RUnlock()
return
}
func newFlashGroup(id uint64, slots []uint32, slotStatus proto.SlotStatus, pendingSlots []uint32, step uint32, status proto.FlashGroupStatus, weight uint32) *FlashGroup {
fg := new(FlashGroup)
fg.ID = id
fg.Slots = slots
fg.SlotStatus = slotStatus
fg.PendingSlots = pendingSlots
fg.Step = step
fg.Weight = weight
fg.Status = status
fg.flashNodes = make(map[string]*FlashNode)
return fg
}
func newFlashGroupFromFgv(fgv flashGroupValue) *FlashGroup {
fg := new(FlashGroup)
fg.ID = fgv.ID
fg.Slots = fgv.Slots
fg.SlotStatus = fgv.SlotStatus
fg.PendingSlots = fgv.PendingSlots
fg.Step = fgv.Step
fg.Weight = fgv.Weight
fg.Status = fgv.Status
fg.flashNodes = make(map[string]*FlashNode)
return fg
}
func (fg *FlashGroup) putFlashNode(fn *FlashNode) {
fg.lock.Lock()
fg.flashNodes[fn.Addr] = fn
fg.lock.Unlock()
}
func (fg *FlashGroup) removeFlashNode(addr string) {
fg.lock.Lock()
delete(fg.flashNodes, addr)
fg.lock.Unlock()
}
func (fg *FlashGroup) getTargetZoneFlashNodeHosts(targetZone string) (hosts []string) {
fg.lock.RLock()
for _, flashNode := range fg.flashNodes {
if flashNode.ZoneName == targetZone {
hosts = append(hosts, flashNode.Addr)
}
}
fg.lock.RUnlock()
return
}
func (fg *FlashGroup) getFlashNodeHosts(checkStatus bool) (hosts []string) {
hosts = make([]string, 0, len(fg.flashNodes))
fg.lock.RLock()
for host, flashNode := range fg.flashNodes {
if checkStatus && !flashNode.isActiveAndEnable() {
continue
}
hosts = append(hosts, host)
}
fg.lock.RUnlock()
return
}
func (fg *FlashGroup) getFlashNodeHostsEnabled() (hosts []string) {
hosts = make([]string, 0, len(fg.flashNodes))
fg.lock.RLock()
for host, flashNode := range fg.flashNodes {
if !flashNode.isEnable() {
continue
}
hosts = append(hosts, host)
}
fg.lock.RUnlock()
return
}
func (fg *FlashGroup) getFlashNodesCount() (count int) {
fg.lock.RLock()
count = len(fg.flashNodes)
fg.lock.RUnlock()
return
}
func (fg *FlashGroup) getSlots() (slots []uint32) {
fg.lock.RLock()
slots = make([]uint32, 0, len(fg.Slots))
slots = append(slots, fg.Slots...)
fg.lock.RUnlock()
return
}
func (fg *FlashGroup) getSlotsCount() (count int) {
fg.lock.RLock()
count = len(fg.Slots)
fg.lock.RUnlock()
return
}
func (fg *FlashGroup) getPendingSlotsCount() (count int) {
fg.lock.RLock()
count = len(fg.PendingSlots)
fg.lock.RUnlock()
return
}
func (fg *FlashGroup) getSlotStatus() (status proto.SlotStatus) {
fg.lock.RLock()
status = fg.SlotStatus
fg.lock.RUnlock()
return
}
func (c *Cluster) syncAddFlashGroup(flashGroup *FlashGroup) (err error) {
return c.syncPutFlashGroupInfo(opSyncAddFlashGroup, flashGroup)
}
func (c *Cluster) syncDeleteFlashGroup(flashGroup *FlashGroup) (err error) {
return c.syncPutFlashGroupInfo(opSyncDeleteFlashGroup, flashGroup)
}
func (c *Cluster) syncUpdateFlashGroup(flashGroup *FlashGroup) (err error) {
return c.syncPutFlashGroupInfo(opSyncUpdateFlashGroup, flashGroup)
}
func (c *Cluster) syncPutFlashGroupInfo(opType uint32, flashGroup *FlashGroup) (err error) {
metadata := new(RaftCmd)
metadata.Op = opType
metadata.K = flashGroupPrefix + strconv.FormatUint(flashGroup.ID, 10)
metadata.V, err = json.Marshal(flashGroup.flashGroupValue)
if err != nil {
return errors.New(err.Error())
}
return c.submit(metadata)
}
func (fg *FlashGroup) GetAdminView() (view proto.FlashGroupAdminView) {
fg.lock.RLock()
view = proto.FlashGroupAdminView{
ID: fg.ID,
Slots: fg.Slots,
Weight: fg.Weight,
Status: fg.Status,
SlotStatus: fg.SlotStatus,
PendingSlots: fg.PendingSlots,
Step: fg.Step,
}
view.ZoneFlashNodes = make(map[string][]*proto.FlashNodeViewInfo)
view.FlashNodeCount = len(fg.flashNodes)
for _, flashNode := range fg.flashNodes {
view.ZoneFlashNodes[flashNode.ZoneName] = append(view.ZoneFlashNodes[flashNode.ZoneName], flashNode.getFlashNodeViewInfo())
}
fg.lock.RUnlock()
return
}
func (m *Server) turnFlashGroup(w http.ResponseWriter, r *http.Request) {
var err error
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupTurn))
defer func() {
doStatAndMetric(proto.AdminFlashGroupTurn, metric, err, nil)
}()
var enable common.Bool
if err = parseArgs(r, enable.Enable()); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
topo := m.cluster.flashNodeTopo
enabled := enable.V
if enabled {
topo.clientOff.Store([]byte(nil))
} else {
topo.clientOff.Store(topo.clientEmpty)
}
sendOkReply(w, r, newSuccessHTTPReply(fmt.Sprintf("turn %v", enabled)))
}
func (m *Server) createFlashGroup(w http.ResponseWriter, r *http.Request) {
var (
err error
setSlots []uint32
setWeight uint32
gradualFlag bool
step uint32
)
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupCreate))
defer func() {
doStatAndMetric(proto.AdminFlashGroupCreate, metric, err, nil)
}()
if setSlots, err = getSetSlots(r); err != nil {
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
if setWeight, err = getSetWeight(r); err != nil {
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
if gradualFlag, err = getGradualFlag(r); err != nil {
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
if step, err = getStep(r); err != nil {
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
if gradualFlag && step <= 0 {
err = fmt.Errorf("the step size(%v) must be greater than 0 when flashGroup gradually creates the slots", step)
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
flashGroup, err := m.cluster.createFlashGroup(setSlots, setWeight, gradualFlag, step)
if err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
sendOkReply(w, r, newSuccessHTTPReply(flashGroup.GetAdminView()))
}
func (c *Cluster) createFlashGroup(setSlots []uint32, setWeight uint32, gradualFlag bool, step uint32) (fg *FlashGroup, err error) {
defer func() {
if err != nil {
log.LogErrorf("action[addFlashGroup],clusterID[%v] err:%v ", c.Name, err.Error())
}
}()
id, err := c.idAlloc.allocateCommonID()
if err != nil {
return
}
if gradualFlag {
if fg, err = c.flashNodeTopo.gradualCreateFlashGroup(id, c, setSlots, setWeight, step); err != nil {
return
}
} else {
if fg, err = c.flashNodeTopo.createFlashGroup(id, c, setSlots, setWeight); err != nil {
return
}
}
c.flashNodeTopo.updateClientCache()
log.LogInfof("action[addFlashGroup],clusterID[%v] id:%v Weight:%v Slots:%v success", c.Name, fg.ID, fg.Weight, fg.getSlots())
return
}
func (m *Server) removeFlashGroup(w http.ResponseWriter, r *http.Request) {
var (
err error
gradualFlag bool
step uint32
)
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupRemove))
defer func() {
doStatAndMetric(proto.AdminFlashGroupRemove, metric, err, nil)
}()
var flashGroupID common.Uint
if err = parseArgs(r, flashGroupID.ID()); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
if gradualFlag, err = getGradualFlag(r); err != nil {
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
if step, err = getStep(r); err != nil {
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
if gradualFlag && step <= 0 {
err = fmt.Errorf("the step size(%v) must be greater than 0 when flashGroup gradually deletes the slots", step)
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
var flashGroup *FlashGroup
if flashGroup, err = m.cluster.flashNodeTopo.getFlashGroup(flashGroupID.V); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
if flashGroup.getSlotStatus() == proto.SlotStatus_Deleting {
err = fmt.Errorf("the flashGroup(%v) is in slotDeleting status, it cannot be deleted repeatedly", flashGroup.ID)
sendErrReply(w, r, &proto.HTTPReply{Code: proto.ErrCodeParamError, Msg: err.Error()})
return
}
if err = m.cluster.removeFlashGroup(flashGroup, gradualFlag, step); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
m.cluster.flashNodeTopo.updateClientCache()
sendOkReply(w, r, newSuccessHTTPReply(fmt.Sprintf("remove flashGroup:%v successfully,Slots:%v nodeCount:%v",
flashGroup.ID, flashGroup.getSlots(), flashGroup.getFlashNodesCount())))
}
func (c *Cluster) removeFlashGroup(flashGroup *FlashGroup, gradualFlag bool, step uint32) (err error) {
remainingSlotsNum := uint32(flashGroup.getSlotsCount()) - step
if gradualFlag && remainingSlotsNum > 0 {
err = c.flashNodeTopo.gradualRemoveFlashGroup(flashGroup, c, step)
return
}
// remove flash nodes then del the flash group
err = c.removeAllFlashNodeFromFlashGroup(flashGroup)
if err != nil {
return
}
err = c.flashNodeTopo.removeFlashGroup(flashGroup, c)
return
}
func (m *Server) setFlashGroup(w http.ResponseWriter, r *http.Request) {
var (
flashGroupID common.Uint
fgStatus proto.FlashGroupStatus
flashGroup *FlashGroup
err error
)
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupSet))
defer func() {
doStatAndMetric(proto.AdminFlashGroupSet, metric, err, nil)
}()
var active common.Bool
if err = parseArgs(r, flashGroupID.ID(), active.Enable().OnValue(func() error {
fgStatus = argConvertFlashGroupStatus(active.V)
return nil
}),
); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
if flashGroup, err = m.cluster.flashNodeTopo.getFlashGroup(flashGroupID.V); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
flashGroup.lock.Lock()
oldStatus := flashGroup.Status
flashGroup.Status = fgStatus
if oldStatus != fgStatus {
if err = m.cluster.syncUpdateFlashGroup(flashGroup); err != nil {
flashGroup.Status = oldStatus
flashGroup.lock.Unlock()
sendErrReply(w, r, newErrHTTPReply(err))
return
}
m.cluster.flashNodeTopo.updateClientCache()
}
flashGroup.lock.Unlock()
sendOkReply(w, r, newSuccessHTTPReply(flashGroup.GetAdminView()))
}
func (m *Server) getFlashGroup(w http.ResponseWriter, r *http.Request) {
var (
flashGroupID common.Uint
flashGroup *FlashGroup
err error
)
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupGet))
defer func() {
doStatAndMetric(proto.AdminFlashGroupGet, metric, err, nil)
}()
if err = parseArgs(r, flashGroupID.ID()); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
if flashGroup, err = m.cluster.flashNodeTopo.getFlashGroup(flashGroupID.V); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
sendOkReply(w, r, newSuccessHTTPReply(flashGroup.GetAdminView()))
}
func (m *Server) flashGroupAddFlashNode(w http.ResponseWriter, r *http.Request) {
var err error
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupNodeAdd))
defer func() {
doStatAndMetric(proto.AdminFlashGroupNodeAdd, metric, err, nil)
}()
flashGroupID, addr, zoneName, count, err := parseArgsFlashGroupNode(r)
if err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
var flashGroup *FlashGroup
if flashGroup, err = m.cluster.flashNodeTopo.getFlashGroup(flashGroupID); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
if addr != "" {
err = m.cluster.addFlashNodeToFlashGroup(addr, flashGroup)
} else {
err = m.cluster.selectFlashNodesFromZoneAddToFlashGroup(zoneName, count, nil, flashGroup)
}
if err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
m.cluster.flashNodeTopo.updateClientCache()
sendOkReply(w, r, newSuccessHTTPReply(flashGroup.GetAdminView()))
}
func (c *Cluster) addFlashNodeToFlashGroup(addr string, flashGroup *FlashGroup) (err error) {
var flashNode *FlashNode
if flashNode, err = c.setFlashNodeToFlashGroup(addr, flashGroup.ID); err != nil {
return
}
flashGroup.putFlashNode(flashNode)
return
}
func (c *Cluster) setFlashNodeToFlashGroup(addr string, flashGroupID uint64) (flashNode *FlashNode, err error) {
if flashNode, err = c.peekFlashNode(addr); err != nil {
return
}
flashNode.Lock()
defer flashNode.Unlock()
if flashNode.FlashGroupID != unusedFlashNodeFlashGroupID {
err = fmt.Errorf("flashNode[%v] FlashGroupID[%v] can not add to flash group:%v", flashNode.Addr, flashNode.FlashGroupID, flashGroupID)
return
}
if time.Since(flashNode.ReportTime) > _defaultNodeTimeoutDuration {
flashNode.IsActive = false
err = fmt.Errorf("flashNode[%v] is inactive lastReportTime:%v", flashNode.Addr, flashNode.ReportTime)
return
}
oldFgID := flashNode.FlashGroupID
flashNode.FlashGroupID = flashGroupID
if err = c.syncUpdateFlashNode(flashNode); err != nil {
flashNode.FlashGroupID = oldFgID
return
}
log.LogInfo(fmt.Sprintf("action[setFlashNodeToFlashGroup] add flash node:%v to flashGroup:%v success", addr, flashGroupID))
return
}
func (c *Cluster) selectFlashNodesFromZoneAddToFlashGroup(zoneName string, count int, excludeHosts []string, flashGroup *FlashGroup) (err error) {
flashNodeZone, err := c.flashNodeTopo.getZone(zoneName)
if err != nil {
return
}
newHosts, err := flashNodeZone.selectFlashNodes(count, excludeHosts)
if err != nil {
return
}
successHost := make([]string, 0)
for _, newHost := range newHosts {
if err = c.addFlashNodeToFlashGroup(newHost, flashGroup); err != nil {
err = fmt.Errorf("successHost:%v, newHosts:%v err:%v", successHost, newHosts, err)
return
}
successHost = append(successHost, newHost)
}
log.LogInfo(fmt.Sprintf("action[selectFlashNodesFromZoneAddToFlashGroup] flashGroup:%v successHost:%v", flashGroup.ID, successHost))
return
}
func (m *Server) flashGroupRemoveFlashNode(w http.ResponseWriter, r *http.Request) {
var err error
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupNodeRemove))
defer func() {
doStatAndMetric(proto.AdminFlashGroupNodeRemove, metric, err, nil)
}()
flashGroupID, addr, zoneName, count, err := parseArgsFlashGroupNode(r)
if err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
var flashGroup *FlashGroup
if flashGroup, err = m.cluster.flashNodeTopo.getFlashGroup(flashGroupID); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
if addr != "" {
err = m.cluster.removeFlashNodeFromFlashGroup(addr, flashGroup)
} else {
err = m.cluster.removeFlashNodesFromTargetZone(zoneName, count, flashGroup)
}
if err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
m.cluster.flashNodeTopo.updateClientCache()
sendOkReply(w, r, newSuccessHTTPReply(flashGroup.GetAdminView()))
}
func (c *Cluster) removeFlashNodeFromFlashGroup(addr string, flashGroup *FlashGroup) (err error) {
var flashNode *FlashNode
if flashNode, err = c.setFlashNodeToUnused(addr, flashGroup.ID); err != nil {
return
}
flashGroup.removeFlashNode(flashNode.Addr)
log.LogInfo(fmt.Sprintf("action[removeFlashNodeFromFlashGroup] node:%v flashGroup:%v, success", flashNode.Addr, flashGroup.ID))
return
}
func (c *Cluster) removeAllFlashNodeFromFlashGroup(flashGroup *FlashGroup) (err error) {
flashNodeHosts := flashGroup.getFlashNodeHosts(false)
successHost := make([]string, 0)
for _, flashNodeHost := range flashNodeHosts {
if err = c.removeFlashNodeFromFlashGroup(flashNodeHost, flashGroup); err != nil {
log.LogErrorf("remove flashNode from flashGroup failed, successHost:%v, flashNodeHosts:%v err:%v", successHost, flashNodeHosts, err)
return
}
successHost = append(successHost, flashNodeHost)
}
log.LogInfof("action[RemoveAllFlashNodeFromFlashGroup] flashGroup:%v successHost:%v", flashGroup.ID, successHost)
return
}
func (c *Cluster) removeFlashNodesFromTargetZone(zoneName string, count int, flashGroup *FlashGroup) (err error) {
flashNodeHosts := flashGroup.getTargetZoneFlashNodeHosts(zoneName)
if len(flashNodeHosts) < count {
return fmt.Errorf("flashNodeHostsCount:%v less than expectCount:%v,flashNodeHosts:%v", len(flashNodeHosts), count, flashNodeHosts)
}
successHost := make([]string, 0)
for _, flashNodeHost := range flashNodeHosts {
if err = c.removeFlashNodeFromFlashGroup(flashNodeHost, flashGroup); err != nil {
err = fmt.Errorf("successHost:%v, flashNodeHosts:%v err:%v", successHost, flashNodeHosts, err)
return
}
successHost = append(successHost, flashNodeHost)
if len(successHost) >= count {
break
}
}
log.LogInfo(fmt.Sprintf("action[removeFlashNodesFromTargetZone] flashGroup:%v successHost:%v", flashGroup.ID, successHost))
return
}
func (c *Cluster) setFlashNodeToUnused(addr string, flashGroupID uint64) (flashNode *FlashNode, err error) {
if flashNode, err = c.peekFlashNode(addr); err != nil {
return
}
flashNode.Lock()
defer flashNode.Unlock()
if flashNode.FlashGroupID != flashGroupID {
err = fmt.Errorf("flashNode[%v] FlashGroupID[%v] not equal to target flash group:%v", flashNode.Addr, flashNode.FlashGroupID, flashGroupID)
return
}
oldFgID := flashNode.FlashGroupID
flashNode.FlashGroupID = unusedFlashNodeFlashGroupID
if err = c.syncUpdateFlashNode(flashNode); err != nil {
flashNode.FlashGroupID = oldFgID
return
}
go func() {
time.Sleep(time.Duration(defaultWaitClientUpdateFgTimeSec) * time.Second)
arr := strings.SplitN(addr, ":", 2)
p, _ := strconv.ParseUint(arr[1], 10, 64)
addr = fmt.Sprintf("%s:%d", arr[0], p+1)
if err = httpclient.New().Addr(addr).FlashNode().EvictAll(); err != nil {
log.LogErrorf("flashNode[%v] evict all failed, err:%v", flashNode.Addr, err)
return
}
}()
return
}
func (m *Server) listFlashGroups(w http.ResponseWriter, r *http.Request) {
var (
fgStatus proto.FlashGroupStatus
allStatus bool
err error
)
metric := exporter.NewTPCnt(apiToMetricsName(proto.AdminFlashGroupList))
defer func() {
doStatAndMetric(proto.AdminFlashGroupList, metric, err, nil)
}()
var active common.Bool
if err = parseArgs(r, active.Enable().OmitEmpty().
OnEmpty(func() error {
allStatus = true // resp all flash groups
return nil
}).
OnValue(func() error {
fgStatus = argConvertFlashGroupStatus(active.V)
return nil
}),
); err != nil {
sendErrReply(w, r, newErrHTTPReply(err))
return
}
fgv := m.cluster.flashNodeTopo.getFlashGroupsAdminView(fgStatus, allStatus)
sendOkReply(w, r, newSuccessHTTPReply(fgv))
}
func (m *Server) clientFlashGroups(w http.ResponseWriter, r *http.Request) {
var err error
metric := exporter.NewTPCnt(apiToMetricsName(proto.ClientFlashGroups))
defer func() {
doStatAndMetric(proto.ClientFlashGroups, metric, err, nil)
}()
if !m.metaReady {
sendErrReply(w, r, newErrHTTPReply(fmt.Errorf("meta not ready")))
return
}
cache := m.cluster.flashNodeTopo.getClientResponse()
if len(cache) == 0 {
sendErrReply(w, r, newErrHTTPReply(fmt.Errorf("flash group response cache is empty")))
return
}
send(w, r, cache)
}
func getSetSlots(r *http.Request) (slots []uint32, err error) {
r.ParseForm()
slots = make([]uint32, 0)
slotStr := r.FormValue("slots")
if slotStr != "" {
arr := strings.Split(slotStr, ",")
var slot uint64
for i := 0; i < len(arr); i++ {
slot, err = strconv.ParseUint(arr[i], 10, 32)
if err != nil {
return nil, err
}
if len(slots) >= defaultFlashGroupSlotsCount {
return
}
slots = append(slots, uint32(slot))
}
}
return
}
func getSetWeight(r *http.Request) (weight uint32, err error) {
var value uint64
r.ParseForm()
weightStr := r.FormValue("weight")
if weightStr != "" {
value, err = strconv.ParseUint(weightStr, 10, 32)
weight = uint32(value)
}
return
}
func getGradualFlag(r *http.Request) (gradualCreateFlag bool, err error) {
r.ParseForm()
flagStr := r.FormValue("gradualFlag")
if flagStr != "" {
gradualCreateFlag, err = strconv.ParseBool(flagStr)
}
return
}
func getStep(r *http.Request) (step uint32, err error) {
var value uint64
r.ParseForm()
stepStr := r.FormValue("step")
if stepStr != "" {
value, err = strconv.ParseUint(stepStr, 10, 32)
step = uint32(value)
}
return
}
func parseArgsFlashGroupNode(r *http.Request) (id uint64, addr, zoneName string, count int, err error) {
var (
idV common.Uint
addrV common.String
zoneV common.String
countV common.Int
)
if err = parseArgs(r, idV.ID(), addrV.Addr()); err == nil {
id = idV.V
addr = addrV.V
return
}
if err = parseArgs(r, idV.ID(), addrV.Addr().OmitEmpty(), zoneV.ZoneName(), countV.Count()); err == nil {
id = idV.V
addr = addrV.V
zoneName = zoneV.V
count = int(countV.V)
}
return
}
func argConvertFlashGroupStatus(active bool) proto.FlashGroupStatus {
if active {
return proto.FlashGroupStatus_Active
}
return proto.FlashGroupStatus_Inactive
}