现代化、开源的 Linux 服务器运维管理面板。
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 

877 lines
22 KiB

package service
import (
"context"
"encoding/base64"
"encoding/json"
"fmt"
"github.com/1Panel-dev/1Panel/backend/app/dto"
"github.com/1Panel-dev/1Panel/backend/app/dto/request"
"github.com/1Panel-dev/1Panel/backend/app/dto/response"
"github.com/1Panel-dev/1Panel/backend/app/model"
"github.com/1Panel-dev/1Panel/backend/app/repo"
"github.com/1Panel-dev/1Panel/backend/buserr"
"github.com/1Panel-dev/1Panel/backend/constant"
"github.com/1Panel-dev/1Panel/backend/global"
"github.com/1Panel-dev/1Panel/backend/i18n"
"github.com/1Panel-dev/1Panel/backend/utils/common"
"github.com/1Panel-dev/1Panel/backend/utils/docker"
"github.com/1Panel-dev/1Panel/backend/utils/files"
http2 "github.com/1Panel-dev/1Panel/backend/utils/http"
"gopkg.in/yaml.v3"
"io"
"net/http"
"os"
"path"
"strconv"
)
type AppService struct {
}
type IAppService interface {
PageApp(req request.AppSearch) (interface{}, error)
GetAppTags() ([]response.TagDTO, error)
GetApp(key string) (*response.AppDTO, error)
GetAppDetail(appId uint, version, appType string) (response.AppDetailDTO, error)
Install(ctx context.Context, req request.AppInstallCreate) (*model.AppInstall, error)
SyncAppListFromRemote() error
GetAppUpdate() (*response.AppUpdateRes, error)
GetAppDetailByID(id uint) (*response.AppDetailDTO, error)
SyncAppListFromLocal()
}
func NewIAppService() IAppService {
return &AppService{}
}
func (a AppService) PageApp(req request.AppSearch) (interface{}, error) {
var opts []repo.DBOption
opts = append(opts, appRepo.OrderByRecommend())
if req.Name != "" {
opts = append(opts, commonRepo.WithLikeName(req.Name))
}
if req.Type != "" {
opts = append(opts, appRepo.WithType(req.Type))
}
if req.Recommend {
opts = append(opts, appRepo.GetRecommend())
}
if len(req.Tags) != 0 {
tags, err := tagRepo.GetByKeys(req.Tags)
if err != nil {
return nil, err
}
var tagIds []uint
for _, t := range tags {
tagIds = append(tagIds, t.ID)
}
appTags, err := appTagRepo.GetByTagIds(tagIds)
if err != nil {
return nil, err
}
var appIds []uint
for _, t := range appTags {
appIds = append(appIds, t.AppId)
}
opts = append(opts, commonRepo.WithIdsIn(appIds))
}
var res response.AppRes
total, apps, err := appRepo.Page(req.Page, req.PageSize, opts...)
if err != nil {
return nil, err
}
var appDTOs []*response.AppDTO
for _, a := range apps {
appDTO := &response.AppDTO{
App: a,
}
appDTOs = append(appDTOs, appDTO)
appTags, err := appTagRepo.GetByAppId(a.ID)
if err != nil {
continue
}
var tagIds []uint
for _, at := range appTags {
tagIds = append(tagIds, at.TagId)
}
tags, err := tagRepo.GetByIds(tagIds)
if err != nil {
continue
}
appDTO.Tags = tags
installs, _ := appInstallRepo.ListBy(appInstallRepo.WithAppId(a.ID))
appDTO.Installed = len(installs) > 0
}
res.Items = appDTOs
res.Total = total
return res, nil
}
func (a AppService) GetAppTags() ([]response.TagDTO, error) {
tags, err := tagRepo.All()
if err != nil {
return nil, err
}
var res []response.TagDTO
for _, tag := range tags {
res = append(res, response.TagDTO{
Tag: tag,
})
}
return res, nil
}
func (a AppService) GetApp(key string) (*response.AppDTO, error) {
var appDTO response.AppDTO
app, err := appRepo.GetFirst(appRepo.WithKey(key))
if err != nil {
return nil, err
}
appDTO.App = app
details, err := appDetailRepo.GetBy(appDetailRepo.WithAppId(app.ID))
if err != nil {
return nil, err
}
var versionsRaw []string
for _, detail := range details {
versionsRaw = append(versionsRaw, detail.Version)
}
appDTO.Versions = common.GetSortedVersions(versionsRaw)
return &appDTO, nil
}
func (a AppService) GetAppDetail(appId uint, version, appType string) (response.AppDetailDTO, error) {
var (
appDetailDTO response.AppDetailDTO
opts []repo.DBOption
)
opts = append(opts, appDetailRepo.WithAppId(appId), appDetailRepo.WithVersion(version))
detail, err := appDetailRepo.GetFirst(opts...)
if err != nil {
return appDetailDTO, err
}
appDetailDTO.AppDetail = detail
appDetailDTO.Enable = true
if appType == "runtime" {
app, err := appRepo.GetFirst(commonRepo.WithByID(appId))
if err != nil {
return appDetailDTO, err
}
fileOp := files.NewFileOp()
versionPath := path.Join(constant.AppResourceDir, app.Resource, app.Key, detail.Version)
if !fileOp.Stat(versionPath) || detail.Update {
if err = downloadApp(app, detail, nil); err != nil {
return appDetailDTO, err
}
}
buildPath := path.Join(versionPath, "build")
paramsPath := path.Join(buildPath, "config.json")
if !fileOp.Stat(paramsPath) {
return appDetailDTO, buserr.New(constant.ErrFileNotExist)
}
param, err := fileOp.GetContent(paramsPath)
if err != nil {
return appDetailDTO, err
}
paramMap := make(map[string]interface{})
if err := json.Unmarshal(param, &paramMap); err != nil {
return appDetailDTO, err
}
appDetailDTO.Params = paramMap
composePath := path.Join(buildPath, "docker-compose.yml")
if !fileOp.Stat(composePath) {
return appDetailDTO, buserr.New(constant.ErrFileNotExist)
}
compose, err := fileOp.GetContent(composePath)
if err != nil {
return appDetailDTO, err
}
composeMap := make(map[string]interface{})
if err := yaml.Unmarshal(compose, &composeMap); err != nil {
return appDetailDTO, err
}
if service, ok := composeMap["services"]; ok {
servicesMap := service.(map[string]interface{})
for k := range servicesMap {
appDetailDTO.Image = k
}
}
} else {
paramMap := make(map[string]interface{})
if err := json.Unmarshal([]byte(detail.Params), &paramMap); err != nil {
return appDetailDTO, err
}
appDetailDTO.Params = paramMap
}
app, err := appRepo.GetFirst(commonRepo.WithByID(detail.AppId))
if err != nil {
return appDetailDTO, err
}
if err := checkLimit(app); err != nil {
appDetailDTO.Enable = false
}
return appDetailDTO, nil
}
func (a AppService) GetAppDetailByID(id uint) (*response.AppDetailDTO, error) {
res := &response.AppDetailDTO{}
appDetail, err := appDetailRepo.GetFirst(commonRepo.WithByID(id))
if err != nil {
return nil, err
}
res.AppDetail = appDetail
paramMap := make(map[string]interface{})
if err := json.Unmarshal([]byte(appDetail.Params), &paramMap); err != nil {
return nil, err
}
res.Params = paramMap
return res, nil
}
func (a AppService) Install(ctx context.Context, req request.AppInstallCreate) (appInstall *model.AppInstall, err error) {
if err = docker.CreateDefaultDockerNetwork(); err != nil {
err = buserr.WithDetail(constant.Err1PanelNetworkFailed, err.Error(), nil)
return
}
if list, _ := appInstallRepo.ListBy(commonRepo.WithByName(req.Name)); len(list) > 0 {
err = buserr.New(constant.ErrNameIsExist)
return
}
var (
httpPort int
httpsPort int
appDetail model.AppDetail
app model.App
)
httpPort, err = checkPort("PANEL_APP_PORT_HTTP", req.Params)
if err != nil {
return
}
httpsPort, err = checkPort("PANEL_APP_PORT_HTTPS", req.Params)
if err != nil {
return
}
appDetail, err = appDetailRepo.GetFirst(commonRepo.WithByID(req.AppDetailId))
if err != nil {
return
}
app, err = appRepo.GetFirst(commonRepo.WithByID(appDetail.AppId))
if err != nil {
return
}
if err = checkRequiredAndLimit(app); err != nil {
return
}
appInstall = &model.AppInstall{
Name: req.Name,
AppId: appDetail.AppId,
AppDetailId: appDetail.ID,
Version: appDetail.Version,
Status: constant.Installing,
HttpPort: httpPort,
HttpsPort: httpsPort,
App: app,
}
composeMap := make(map[string]interface{})
if req.EditCompose {
if err = yaml.Unmarshal([]byte(req.DockerCompose), &composeMap); err != nil {
return
}
} else {
if err = yaml.Unmarshal([]byte(appDetail.DockerCompose), &composeMap); err != nil {
return
}
}
value, ok := composeMap["services"]
if !ok {
err = buserr.New(constant.ErrFileParse)
return
}
servicesMap := value.(map[string]interface{})
containerName := constant.ContainerPrefix + app.Key + "-" + common.RandStr(4)
if req.Advanced && req.ContainerName != "" {
containerName = req.ContainerName
appInstalls, _ := appInstallRepo.ListBy(appInstallRepo.WithContainerName(containerName))
if len(appInstalls) > 0 {
err = buserr.New(constant.ErrContainerName)
return
}
containerExist := false
containerExist, err = checkContainerNameIsExist(req.ContainerName, appInstall.GetPath())
if err != nil {
return
}
if containerExist {
err = buserr.New(constant.ErrContainerName)
return
}
}
req.Params[constant.ContainerName] = containerName
appInstall.ContainerName = containerName
index := 0
for k := range servicesMap {
appInstall.ServiceName = k
if index > 0 {
continue
}
index++
}
if err = addDockerComposeCommonParam(composeMap, appInstall.ServiceName, req.AppContainerConfig, req.Params); err != nil {
return
}
var (
composeByte []byte
paramByte []byte
)
composeByte, err = yaml.Marshal(composeMap)
if err != nil {
return
}
appInstall.DockerCompose = string(composeByte)
defer func() {
if err != nil {
hErr := handleAppInstallErr(ctx, appInstall)
if hErr != nil {
global.LOG.Errorf("delete app dir error %s", hErr.Error())
}
}
}()
paramByte, err = json.Marshal(req.Params)
if err != nil {
return
}
appInstall.Env = string(paramByte)
if err = appInstallRepo.Create(ctx, appInstall); err != nil {
return
}
if err = createLink(ctx, app, appInstall, req.Params); err != nil {
return
}
go func() {
if err = copyData(app, appDetail, appInstall, req); err != nil {
if appInstall.Status == constant.Installing {
appInstall.Status = constant.Error
appInstall.Message = err.Error()
}
_ = appInstallRepo.Save(context.Background(), appInstall)
return
}
if err = upAppPre(app, appInstall); err != nil {
return
}
upApp(appInstall)
}()
go updateToolApp(appInstall)
return
}
func (a AppService) SyncAppListFromLocal() {
fileOp := files.NewFileOp()
localAppDir := constant.LocalAppResourceDir
if !fileOp.Stat(localAppDir) {
return
}
var (
err error
dirEntries []os.DirEntry
localApps []model.App
)
defer func() {
if err != nil {
global.LOG.Errorf("sync app failed %v", err)
}
}()
global.LOG.Infof("start sync local apps...")
dirEntries, err = os.ReadDir(localAppDir)
if err != nil {
return
}
for _, dirEntry := range dirEntries {
if dirEntry.IsDir() {
appDir := path.Join(localAppDir, dirEntry.Name())
appDirEntries, err := os.ReadDir(appDir)
if err != nil {
global.LOG.Errorf(i18n.GetMsgWithMap("ErrAppDirNull", map[string]interface{}{"name": dirEntry.Name(), "err": err.Error()}))
continue
}
app, err := handleLocalApp(appDir)
if err != nil {
global.LOG.Errorf(i18n.GetMsgWithMap("LocalAppErr", map[string]interface{}{"name": dirEntry.Name(), "err": err.Error()}))
continue
}
var appDetails []model.AppDetail
for _, appDirEntry := range appDirEntries {
if appDirEntry.IsDir() {
appDetail := model.AppDetail{
Version: appDirEntry.Name(),
Status: constant.AppNormal,
}
versionDir := path.Join(appDir, appDirEntry.Name())
if err = handleLocalAppDetail(versionDir, &appDetail); err != nil {
global.LOG.Errorf(i18n.GetMsgWithMap("LocalAppVersionErr", map[string]interface{}{"name": app.Name, "version": appDetail.Version, "err": err.Error()}))
continue
}
appDetails = append(appDetails, appDetail)
}
}
if len(appDetails) > 0 {
app.Details = appDetails
localApps = append(localApps, *app)
} else {
global.LOG.Errorf(i18n.GetMsgWithMap("LocalAppVersionNull", map[string]interface{}{"name": app.Name}))
}
}
}
var (
newApps []model.App
deleteApps []model.App
updateApps []model.App
oldAppIds []uint
deleteAppIds []uint
deleteAppDetails []model.AppDetail
newAppDetails []model.AppDetail
updateDetails []model.AppDetail
appTags []*model.AppTag
)
oldApps, _ := appRepo.GetBy(appRepo.WithResource(constant.AppResourceLocal))
apps := make(map[string]model.App, len(oldApps))
for _, old := range oldApps {
old.Status = constant.AppTakeDown
apps[old.Key] = old
}
for _, app := range localApps {
if oldApp, ok := apps[app.Key]; ok {
app.ID = oldApp.ID
appDetails := make(map[string]model.AppDetail, len(oldApp.Details))
for _, old := range oldApp.Details {
old.Status = constant.AppTakeDown
appDetails[old.Version] = old
}
for i, newDetail := range app.Details {
version := newDetail.Version
newDetail.Status = constant.AppNormal
newDetail.AppId = app.ID
oldDetail, exist := appDetails[version]
if exist {
newDetail.ID = oldDetail.ID
delete(appDetails, version)
}
app.Details[i] = newDetail
}
for _, v := range appDetails {
app.Details = append(app.Details, v)
}
}
app.TagsKey = append(app.TagsKey, constant.AppResourceLocal)
apps[app.Key] = app
}
for _, app := range apps {
if app.ID == 0 {
newApps = append(newApps, app)
} else {
oldAppIds = append(oldAppIds, app.ID)
if app.Status == constant.AppTakeDown {
installs, _ := appInstallRepo.ListBy(appInstallRepo.WithAppId(app.ID))
if len(installs) > 0 {
updateApps = append(updateApps, app)
continue
}
deleteAppIds = append(deleteAppIds, app.ID)
deleteApps = append(deleteApps, app)
deleteAppDetails = append(deleteAppDetails, app.Details...)
} else {
updateApps = append(updateApps, app)
}
}
}
tags, _ := tagRepo.All()
tagMap := make(map[string]uint, len(tags))
for _, tag := range tags {
tagMap[tag.Key] = tag.ID
}
tx, ctx := getTxAndContext()
defer tx.Rollback()
if len(newApps) > 0 {
if err = appRepo.BatchCreate(ctx, newApps); err != nil {
return
}
}
for _, update := range updateApps {
if err = appRepo.Save(ctx, &update); err != nil {
return
}
}
if len(deleteApps) > 0 {
if err = appRepo.BatchDelete(ctx, deleteApps); err != nil {
return
}
if err = appDetailRepo.DeleteByAppIds(ctx, deleteAppIds); err != nil {
return
}
}
if err = appTagRepo.DeleteByAppIds(ctx, oldAppIds); err != nil {
return
}
for _, newApp := range newApps {
if newApp.ID > 0 {
for _, detail := range newApp.Details {
detail.AppId = newApp.ID
newAppDetails = append(newAppDetails, detail)
}
}
}
for _, update := range updateApps {
for _, detail := range update.Details {
if detail.ID == 0 {
detail.AppId = update.ID
newAppDetails = append(newAppDetails, detail)
} else {
if detail.Status == constant.AppNormal {
updateDetails = append(updateDetails, detail)
} else {
deleteAppDetails = append(deleteAppDetails, detail)
}
}
}
}
allApps := append(newApps, updateApps...)
for _, app := range allApps {
for _, t := range app.TagsKey {
tagId, ok := tagMap[t]
if ok {
appTags = append(appTags, &model.AppTag{
AppId: app.ID,
TagId: tagId,
})
}
}
}
if len(newAppDetails) > 0 {
if err = appDetailRepo.BatchCreate(ctx, newAppDetails); err != nil {
return
}
}
for _, updateAppDetail := range updateDetails {
if err = appDetailRepo.Update(ctx, updateAppDetail); err != nil {
return
}
}
if len(deleteAppDetails) > 0 {
if err = appDetailRepo.BatchDelete(ctx, deleteAppDetails); err != nil {
return
}
}
if len(oldAppIds) > 0 {
if err = appTagRepo.DeleteByAppIds(ctx, oldAppIds); err != nil {
return
}
}
if len(appTags) > 0 {
if err = appTagRepo.BatchCreate(ctx, appTags); err != nil {
return
}
}
tx.Commit()
global.LOG.Infof("sync local apps success")
}
func (a AppService) GetAppUpdate() (*response.AppUpdateRes, error) {
res := &response.AppUpdateRes{
CanUpdate: false,
}
setting, err := NewISettingService().GetSettingInfo()
if err != nil {
return nil, err
}
versionUrl := fmt.Sprintf("%s/%s/1panel.json.version.txt", global.CONF.System.AppRepo, global.CONF.System.Mode)
versionRes, err := http2.GetHttpRes(versionUrl)
if err != nil {
return nil, err
}
defer versionRes.Body.Close()
body, err := io.ReadAll(versionRes.Body)
if err != nil {
return nil, err
}
lastModifiedStr := string(body)
lastModified, err := strconv.Atoi(lastModifiedStr)
if err != nil {
return nil, err
}
appStoreLastModified, _ := strconv.Atoi(setting.AppStoreLastModified)
if setting.AppStoreLastModified == "" || lastModified != appStoreLastModified {
res.CanUpdate = true
return res, err
}
return res, nil
}
func getAppFromRepo(downloadPath string) error {
downloadUrl := downloadPath
global.LOG.Infof("download file from %s", downloadUrl)
fileOp := files.NewFileOp()
packagePath := path.Join(constant.ResourceDir, path.Base(downloadUrl))
if err := fileOp.DownloadFile(downloadUrl, packagePath); err != nil {
return err
}
if err := fileOp.Decompress(packagePath, constant.ResourceDir, files.Zip); err != nil {
return err
}
defer func() {
_ = fileOp.DeleteFile(packagePath)
}()
return nil
}
func (a AppService) SyncAppListFromRemote() error {
updateRes, err := a.GetAppUpdate()
if err != nil {
return err
}
if !updateRes.CanUpdate {
return nil
}
if err = getAppFromRepo(fmt.Sprintf("%s/%s/1panel.json.zip", global.CONF.System.AppRepo, global.CONF.System.Mode)); err != nil {
return err
}
listFile := path.Join(constant.ResourceDir, "1panel.json")
content, err := os.ReadFile(listFile)
if err != nil {
return err
}
list := &dto.AppList{}
if err := json.Unmarshal(content, list); err != nil {
return err
}
var (
tags []*model.Tag
appTags []*model.AppTag
oldAppIds []uint
)
for _, t := range list.Extra.Tags {
tags = append(tags, &model.Tag{
Key: t.Key,
Name: t.Name,
})
}
oldApps, err := appRepo.GetBy(appRepo.WithResource(constant.AppResourceRemote))
if err != nil {
return err
}
for _, old := range oldApps {
oldAppIds = append(oldAppIds, old.ID)
}
baseRemoteUrl := fmt.Sprintf("%s/%s/1panel", global.CONF.System.AppRepo, global.CONF.System.Mode)
appsMap := getApps(oldApps, list.Apps)
for _, l := range list.Apps {
app := appsMap[l.AppProperty.Key]
iconRes, err := http.Get(l.Icon)
if err != nil {
return err
}
body, err := io.ReadAll(iconRes.Body)
if err != nil {
return err
}
iconStr := base64.StdEncoding.EncodeToString(body)
app.Icon = iconStr
app.TagsKey = l.AppProperty.Tags
if l.AppProperty.Recommend > 0 {
app.Recommend = l.AppProperty.Recommend
} else {
app.Recommend = 9999
}
app.ReadMe = l.ReadMe
app.LastModified = l.LastModified
versions := l.Versions
detailsMap := getAppDetails(app.Details, versions)
for _, v := range versions {
version := v.Name
detail := detailsMap[version]
dockerComposeUrl := fmt.Sprintf("%s/%s/%s/%s", baseRemoteUrl, app.Key, version, "docker-compose.yml")
composeRes, err := http.Get(dockerComposeUrl)
if err != nil {
return err
}
bodyContent, err := io.ReadAll(composeRes.Body)
if err != nil {
return err
}
detail.DockerCompose = string(bodyContent)
paramByte, _ := json.Marshal(v.AppForm)
detail.Params = string(paramByte)
detail.DownloadUrl = v.DownloadUrl
detail.DownloadCallBackUrl = v.DownloadCallBackUrl
detail.Update = true
detail.LastModified = v.LastModified
detailsMap[version] = detail
}
var newDetails []model.AppDetail
for _, detail := range detailsMap {
newDetails = append(newDetails, detail)
}
app.Details = newDetails
appsMap[l.AppProperty.Key] = app
}
var (
addAppArray []model.App
updateAppArray []model.App
deleteAppArray []model.App
deleteIds []uint
tagMap = make(map[string]uint, len(tags))
)
for _, v := range appsMap {
if v.ID == 0 {
addAppArray = append(addAppArray, v)
} else {
if v.Status == constant.AppTakeDown {
installs, _ := appInstallRepo.ListBy(appInstallRepo.WithAppId(v.ID))
if len(installs) > 0 {
updateAppArray = append(updateAppArray, v)
continue
}
deleteAppArray = append(deleteAppArray, v)
deleteIds = append(deleteIds, v.ID)
} else {
updateAppArray = append(updateAppArray, v)
}
}
}
tx, ctx := getTxAndContext()
defer tx.Rollback()
if len(addAppArray) > 0 {
if err := appRepo.BatchCreate(ctx, addAppArray); err != nil {
return err
}
}
if len(deleteAppArray) > 0 {
if err := appRepo.BatchDelete(ctx, deleteAppArray); err != nil {
return err
}
if err := appDetailRepo.DeleteByAppIds(ctx, deleteIds); err != nil {
return err
}
}
if err := tagRepo.DeleteAll(ctx); err != nil {
return err
}
if len(tags) > 0 {
if err := tagRepo.BatchCreate(ctx, tags); err != nil {
return err
}
for _, t := range tags {
tagMap[t.Key] = t.ID
}
}
for _, update := range updateAppArray {
if err := appRepo.Save(ctx, &update); err != nil {
return err
}
}
apps := append(addAppArray, updateAppArray...)
var (
addDetails []model.AppDetail
updateDetails []model.AppDetail
deleteDetails []model.AppDetail
)
for _, app := range apps {
for _, t := range app.TagsKey {
tagId, ok := tagMap[t]
if ok {
appTags = append(appTags, &model.AppTag{
AppId: app.ID,
TagId: tagId,
})
}
}
for _, d := range app.Details {
d.AppId = app.ID
if d.ID == 0 {
addDetails = append(addDetails, d)
} else {
if d.Status == constant.AppTakeDown {
runtime, _ := runtimeRepo.GetFirst(runtimeRepo.WithDetailId(d.ID))
if runtime != nil {
updateDetails = append(updateDetails, d)
continue
}
installs, _ := appInstallRepo.ListBy(appInstallRepo.WithDetailIdsIn([]uint{d.ID}))
if len(installs) > 0 {
updateDetails = append(updateDetails, d)
continue
}
deleteDetails = append(deleteDetails, d)
} else {
updateDetails = append(updateDetails, d)
}
}
}
}
if len(addDetails) > 0 {
if err := appDetailRepo.BatchCreate(ctx, addDetails); err != nil {
return err
}
}
if len(deleteDetails) > 0 {
if err := appDetailRepo.BatchDelete(ctx, deleteDetails); err != nil {
return err
}
}
for _, u := range updateDetails {
if err := appDetailRepo.Update(ctx, u); err != nil {
return err
}
}
if len(oldAppIds) > 0 {
if err := appTagRepo.DeleteByAppIds(ctx, oldAppIds); err != nil {
return err
}
}
if len(appTags) > 0 {
if err := appTagRepo.BatchCreate(ctx, appTags); err != nil {
return err
}
}
tx.Commit()
if err := NewISettingService().Update("AppStoreLastModified", strconv.Itoa(list.LastModified)); err != nil {
return err
}
return nil
}