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NLBHandler.go
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NLBHandler.go
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// Cloud Driver Interface of CB-Spider.
// The CB-Spider is a sub-Framework of the Cloud-Barista Multi-Cloud Project.
// The CB-Spider Mission is to connect all the clouds with a single interface.
//
// * Cloud-Barista: https://github.com/cloud-barista
//
// This is Mock Driver.
//
// by CB-Spider Team, 2020.10.
package resources
import (
"fmt"
"sync"
cblog "github.com/cloud-barista/cb-log"
irs "github.com/cloud-barista/cb-spider/cloud-control-manager/cloud-driver/interfaces/resources"
)
var nlbInfoMap map[string][]*irs.NLBInfo
type MockNLBHandler struct {
MockName string
}
func init() {
// cblog is a global variable.
nlbInfoMap = make(map[string][]*irs.NLBInfo)
}
var nlbMapLock = new(sync.RWMutex)
func (nlbHandler *MockNLBHandler) CreateNLB(nlbInfo irs.NLBInfo) (irs.NLBInfo, error) {
cblogger := cblog.GetLogger("CB-SPIDER")
cblogger.Info("Mock Driver: called CreateNLB()!")
mockName := nlbHandler.MockName
nlbInfo.IId.SystemId = nlbInfo.IId.NameId
nlbInfo.VpcIID.SystemId = nlbInfo.VpcIID.NameId
// insert.NLBInfo into global Map
nlbMapLock.Lock()
defer nlbMapLock.Unlock()
infoList, _ := nlbInfoMap[mockName]
clonedInfo := CloneNLBInfo(nlbInfo)
infoList = append(infoList, &clonedInfo)
nlbInfoMap[mockName] = infoList
return CloneNLBInfo(nlbInfo), nil
}
func CloneNLBInfoList(srcInfoList []*irs.NLBInfo) []*irs.NLBInfo {
clonedInfoList := []*irs.NLBInfo{}
for _, srcInfo := range srcInfoList {
clonedInfo := CloneNLBInfo(*srcInfo)
clonedInfoList = append(clonedInfoList, &clonedInfo)
}
return clonedInfoList
}
func CloneNLBInfo(srcInfo irs.NLBInfo) irs.NLBInfo {
/*
type NLBInfo struct {
IId IID // {NameId, SystemId}
VpcIID IID // {NameId, SystemId}
Type string // PUBLIC(V) | INTERNAL
Scope string // REGION(V) | GLOBAL
//------ Frontend
Listener ListenerInfo
//------ Backend
VMGroup VMGroupInfo
HealthChecker HealthCheckerInfo
CreatedTime time.Time
KeyValueList []KeyValue
}
*/
// clone.NLBInfo
clonedInfo := irs.NLBInfo{
IId: irs.IID{srcInfo.IId.NameId, srcInfo.IId.SystemId},
VpcIID: irs.IID{srcInfo.VpcIID.NameId, srcInfo.VpcIID.SystemId},
Type: srcInfo.Type,
Scope: srcInfo.Scope,
// Need not clone
Listener: srcInfo.Listener,
VMGroup: srcInfo.VMGroup,
HealthChecker: srcInfo.HealthChecker,
KeyValueList: srcInfo.KeyValueList,
}
return clonedInfo
}
func (nlbHandler *MockNLBHandler) ListNLB() ([]*irs.NLBInfo, error) {
cblogger := cblog.GetLogger("CB-SPIDER")
cblogger.Info("Mock Driver: called ListNLB()!")
mockName := nlbHandler.MockName
nlbMapLock.RLock()
defer nlbMapLock.RUnlock()
infoList, ok := nlbInfoMap[mockName]
if !ok {
return []*irs.NLBInfo{}, nil
}
return CloneNLBInfoList(infoList), nil
}
func (nlbHandler *MockNLBHandler) GetNLB(iid irs.IID) (irs.NLBInfo, error) {
cblogger := cblog.GetLogger("CB-SPIDER")
cblogger.Info("Mock Driver: called GetNLB()!")
nlbMapLock.RLock()
defer nlbMapLock.RUnlock()
mockName := nlbHandler.MockName
infoList, ok := nlbInfoMap[mockName]
if !ok {
return irs.NLBInfo{}, fmt.Errorf("%s NLB does not exist!!", iid.NameId)
}
// infoList is already cloned in ListNLB()
for _, info := range infoList {
if info.IId.NameId == iid.NameId {
return CloneNLBInfo(*info), nil
}
}
return irs.NLBInfo{}, fmt.Errorf("%s NLB does not exist!!", iid.NameId)
}
func (nlbHandler *MockNLBHandler) DeleteNLB(iid irs.IID) (bool, error) {
cblogger := cblog.GetLogger("CB-SPIDER")
cblogger.Info("Mock Driver: called DeleteNLB()!")
nlbMapLock.Lock()
defer nlbMapLock.Unlock()
mockName := nlbHandler.MockName
infoList, ok := nlbInfoMap[mockName]
if !ok {
return false, fmt.Errorf("%s NLB does not exist!!", iid.NameId)
}
for idx, info := range infoList {
if info.IId.SystemId == iid.SystemId {
infoList = append(infoList[:idx], infoList[idx+1:]...)
nlbInfoMap[mockName] = infoList
return true, nil
}
}
return false, nil
}
func (nlbHandler *MockNLBHandler) AddVMs(nlbIID irs.IID, vmIIDs *[]irs.IID) (irs.VMGroupInfo, error) {
cblogger := cblog.GetLogger("CB-SPIDER")
cblogger.Info("Mock Driver: called AddVMs()!")
nlbMapLock.Lock()
defer nlbMapLock.Unlock()
mockName := nlbHandler.MockName
infoList, ok := nlbInfoMap[mockName]
if !ok {
return irs.VMGroupInfo{}, fmt.Errorf("%s NLB does not exist!!", nlbIID.NameId)
}
// check if all input rules exist
for _, info := range infoList {
if info.IId.NameId == nlbIID.NameId {
for _, vmIID := range *vmIIDs {
for _, vm := range *info.VMGroup.VMs {
if vm.NameId == vmIID.NameId {
errMSG := fmt.Sprintf("%s NLB already has this VM: %v!!", nlbIID.NameId, vmIID)
errMSG += fmt.Sprintf(" #### %s NLB has %v!!", nlbIID.NameId, *info.VMGroup.VMs)
return irs.VMGroupInfo{}, fmt.Errorf(errMSG)
}
}
}
}
}
// Add all VMs
for _, info := range infoList {
if info.IId.NameId == nlbIID.NameId {
*info.VMGroup.VMs = append(*info.VMGroup.VMs, *vmIIDs...)
return CloneNLBInfo(*info).VMGroup, nil
}
}
return irs.VMGroupInfo{}, fmt.Errorf("%s NLB does not exist!!", nlbIID.NameId)
}
func (nlbHandler *MockNLBHandler) RemoveVMs(nlbIID irs.IID, vmIIDs *[]irs.IID) (bool, error) {
cblogger := cblog.GetLogger("CB-SPIDER")
cblogger.Info("Mock Driver: called RemoveVMs()!")
nlbMapLock.Lock()
defer nlbMapLock.Unlock()
mockName := nlbHandler.MockName
infoList, ok := nlbInfoMap[mockName]
if !ok {
return false, fmt.Errorf("%s NLB does not exist!!", nlbIID.NameId)
}
// check if all input rules do not exist
for _, info := range infoList {
if info.IId.NameId == nlbIID.NameId {
for _, vmIID := range *vmIIDs {
existFlag := false
for _, vm := range *info.VMGroup.VMs {
if vm.NameId == vmIID.NameId {
existFlag = true
}
}
if !existFlag {
errMSG := fmt.Sprintf("%s NLB does not have this VM: %v!!", nlbIID.NameId, vmIID)
errMSG += fmt.Sprintf(" #### %s NLB has %v!!", nlbIID.NameId, *info.VMGroup.VMs)
return false, fmt.Errorf(errMSG)
}
}
}
}
for _, info := range infoList {
if (*info).IId.NameId == nlbIID.NameId {
for idx, vm := range *info.VMGroup.VMs {
for _, vmIID := range *vmIIDs {
if vm.NameId == vmIID.NameId {
*info.VMGroup.VMs = removeVM(info.VMGroup.VMs, idx)
}
}
}
}
}
return true, nil
}
func removeVM(list *[]irs.IID, idx int) []irs.IID {
return append((*list)[:idx], (*list)[idx+1:]...)
}
//------ Frontend Control
func (nlbHandler *MockNLBHandler) ChangeListener(nlbIID irs.IID, listener irs.ListenerInfo) (irs.ListenerInfo, error) {
return irs.ListenerInfo{}, fmt.Errorf("Not implemented yet!")
}
//------ Backend Control
func (nlbHandler *MockNLBHandler) ChangeVMGroupInfo(nlbIID irs.IID, vmGroup irs.VMGroupInfo) (irs.VMGroupInfo, error) {
return irs.VMGroupInfo{}, fmt.Errorf("Not implemented yet!")
}
func (nlbHandler *MockNLBHandler) ChangeHealthCheckerInfo(nlbIID irs.IID, healthChecker irs.HealthCheckerInfo) (irs.HealthCheckerInfo, error) {
return irs.HealthCheckerInfo{}, fmt.Errorf("Not implemented yet!")
}
func (nlbHandler *MockNLBHandler) GetVMGroupHealthInfo(nlbIID irs.IID) (irs.HealthInfo, error) {
return irs.HealthInfo{}, fmt.Errorf("Not implemented yet!")
}