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IIDManager.go
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/
IIDManager.go
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// IID(Integrated ID) Manager 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
//
// by CB-Spider Team, 2020.03.
package iidmanager
import (
"fmt"
"regexp"
"strconv"
"strings"
"github.com/rs/xid"
cblogger "github.com/cloud-barista/cb-log"
"github.com/cloud-barista/cb-spider/cloud-control-manager/cloud-driver/interfaces/resources"
cim "github.com/cloud-barista/cb-spider/cloud-info-manager"
ccim "github.com/cloud-barista/cb-spider/cloud-info-manager/connection-config-info-manager"
"github.com/sirupsen/logrus"
)
var cblog *logrus.Logger
func init() {
cblog = cblogger.GetLogger("CLOUD-BARISTA")
}
//====================================================================
// ====================================================================
type IIDInfo struct {
ConnectionName string // ex) "aws-seoul-config"
ResourceType string // ex) "VM"
IId resources.IID // ex) {NameId, SystemId} = {"powerkim_vm_01", "i-0bc7123b7e5cbf79d"}
}
//====================================================================
//----------------
// generate Spider UUID(SP-XID)
func New(cloudConnectName string, rsType string, uid string) (string, error) {
cccInfo, err := ccim.GetConnectionConfig(cloudConnectName)
if err != nil {
return "", err
}
// ref) https://github.com/cloud-barista/cb-spider/issues/655
if cccInfo.ProviderName == "NCP" && rsType == "sg" {
return uid, nil
}
// AZURE-nogegroup: MaxLength = 12, lower, number, Cannot use '-'
if cccInfo.ProviderName == "AZURE" && rsType == "nodegroup" {
retUID := strings.ToLower(strings.ReplaceAll(uid, "-", ""))
if len(retUID) > 12 {
// #6 + #6 => #12
retUID = uid[:6] + xid.New().String()[0:6]
}
return retUID, nil
}
// NHNCLOUD-cluster,nogegroup: MaxLenth = 20, lower, number, '-'
if cccInfo.ProviderName == "NHNCLOUD" && (rsType == "cluster" || rsType == "nodegroup") {
retUID := strings.ToLower(uid)
if len(retUID) > 20 {
// #10 + #10 => #20
retUID = uid[:10] + xid.New().String()[0:10]
}
return retUID, nil
}
// NCP or NCPVPC-windowvm: MaxLenth = 15, lower, number, '-'
if (cccInfo.ProviderName == "NCP" || cccInfo.ProviderName == "NCPVPC") && (rsType == "windowsvm") {
retUID := strings.ToLower(uid)
if len(retUID) > 15 {
// #8 + #7 => #15
retUID = uid[:8] + xid.New().String()[0:7]
}
return retUID, nil
}
// default length: 9 + 21 => 30 (NCP's ID Length, the shortest)
// ex) AWS maxLen(VMID)=255, #234 + #1 + #20 <== "{UID}-{XID}", {XID} = #20
maxLength := 9
rsMaxLength := getIdMaxLength(cccInfo.ProviderName, rsType)
if rsMaxLength > 0 && rsMaxLength <= 21 {
return "", fmt.Errorf("The Minimum ID Length must be greater than 21!")
}
if rsMaxLength > 21 {
maxLength = rsMaxLength - 21
}
cookedUID := cookUID(uid, maxLength)
// cblog.Info("UID: " + uid + " => cookedUID: " + cookedUID)
guid := xid.New()
spXID := cookedUID + "-" + guid.String()
// cblog.Info("SP-XID: " + spXID)
return convertDashOrUnderScore(cccInfo.ProviderName, spXID)
}
func getIdMaxLength(providerName string, rsType string) int {
// get Provider's Meta Info
cloudOSMetaInfo, err := cim.GetCloudOSMetaInfo(providerName)
if err != nil {
cblog.Error(err)
return 0
}
if len(cloudOSMetaInfo.IdMaxLength) <= 1 {
return 0
}
/*----- ref) cloud-driver-libs/cloudos_meta.yaml
# idmaxlength: VPC / Subnet / SecurityGroup / KeyPair / VM / Disk / NLB / MyImage /Cluster
idmaxlength: 255 / 256 / 255 / 255 / 255 / 255 / 255 / 255 / 255
-----*/
idx := getIDXNumber(rsType)
if idx == -1 {
return 0
}
// target CSP's rsType not defined in cloudos_meta.yaml
if idx >= len(cloudOSMetaInfo.IdMaxLength) {
return 0
}
strMaxLength := cloudOSMetaInfo.IdMaxLength[idx]
maxLength, _ := strconv.Atoi(strMaxLength)
return maxLength
}
func getIDXNumber(rsType string) int {
switch rsType {
case "vpc":
return 0
case "subnet":
return 1
case "sg":
return 2
case "keypair":
return 3
case "vm":
return 4
case "disk":
return 5
case "nlb":
return 6
case "myimage":
return 7
case "cluster":
return 8
case "nodegroup":
return 9
default:
return -1
}
}
func convertDashOrUnderScore(providerName string, spXID string) (string, error) {
var convertedSpXID string
// Tencent use '_'
if providerName == "TENCENT" {
convertedSpXID = strings.ReplaceAll(spXID, "-", "_")
} else { // other CSP use '-'
convertedSpXID = strings.ReplaceAll(spXID, "_", "-")
}
// AWS SecurityGroup: User can not use 'sg-*' format
convertedSpXID = strings.ReplaceAll(convertedSpXID, "sg-", "sg")
return convertedSpXID, nil
}
func cookUID(orgUID string, maxLength int) string {
runes := []rune(orgUID)
filteredUID := []byte{}
for _, char := range runes {
// (1) Max length is '9' or 4(TENCENT)
if len(filteredUID) == maxLength { // max length: 9 or 4(TENCENT)
break
}
var matched bool = false
var err error
// (2) Check the first character is a lowercase string
if len(filteredUID) == 0 {
matched, err = regexp.MatchString("[a-zA-Z]", string(char))
// (3) Extract filteredUID([a-zA-Z0-9-_])
} else {
matched, err = regexp.MatchString("[a-zA-Z0-9-_]", string(char))
}
if err != nil {
cblog.Error(err)
}
if matched {
//fmt.Printf("%s matches\n", string(char))
filteredUID = append(filteredUID, byte(char))
}
}
// (4) Coverting UID into lowercase
lowercaseUID := strings.ToLower(string(filteredUID))
return lowercaseUID
}