289 lines
10 KiB
Go
289 lines
10 KiB
Go
package app
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net"
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"net/http"
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"path"
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"strings"
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"time"
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"infinite-canvas/backend/internal/model"
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"github.com/tencentyun/cos-go-sdk-v5"
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"gorm.io/gorm"
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)
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type OSSConnectionTestResult struct {
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OK bool `json:"ok"`
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Message string `json:"message,omitempty"`
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TestedAt time.Time `json:"testedAt"`
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TestedDigest string `json:"testedDigest"`
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}
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var errOSSConnectionReadMismatch = errors.New("对象存储读取内容不一致")
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func (s *Service) TestAdminOSSSetting(actor *model.User, req OSSSettingRequest) (*OSSConnectionTestResult, error) {
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if err := s.RequireAdmin(actor); err != nil {
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return nil, err
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}
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_, current, err := s.readOSSSetting()
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if err != nil {
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return nil, err
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}
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return s.testOSSSetting("platform", "", actor.ID, req, current)
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}
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func (s *Service) TestUserOSSSetting(actor *model.User, req OSSSettingRequest) (*OSSConnectionTestResult, error) {
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if actor == nil {
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return nil, Unauthorized("请先登录")
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}
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_, platform, err := s.readOSSSetting()
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if err != nil {
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return nil, err
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}
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if strings.EqualFold(strings.TrimSpace(req.Provider), s3Provider) && !platform.AllowUserS3 {
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return nil, Forbidden("平台管理员尚未允许个人 S3 兼容存储")
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}
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_, current, err := s.readUserOSSSetting(actor.ID)
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if err != nil {
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return nil, err
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}
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return s.testOSSSetting("user", actor.ID, actor.ID, req, current)
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}
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func (s *Service) testOSSSetting(scope string, ownerID string, actorID string, req OSSSettingRequest, current ossSettingValue) (*OSSConnectionTestResult, error) {
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req.Enabled = true
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value, err := ossSettingFromRequest(req, current)
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if err != nil {
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return nil, err
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}
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key := scope + ":" + actorID
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s.storageTestMu.Lock()
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if s.activeStorageTests == nil {
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s.activeStorageTests = make(map[string]bool)
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}
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if s.activeStorageTests[key] {
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s.storageTestMu.Unlock()
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return nil, NewAppError(http.StatusConflict, "对象存储连接测试正在进行")
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}
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s.activeStorageTests[key] = true
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s.storageTestMu.Unlock()
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defer func() {
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s.storageTestMu.Lock()
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delete(s.activeStorageTests, key)
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s.storageTestMu.Unlock()
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}()
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testKey := path.Join(value.PathPrefix, ".yingce-tests", scope, newID())
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if err := verifyOSSConnection(value, testKey); err != nil {
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return nil, err
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}
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location, err := s.upsertStorageLocation(scope, ownerID, value)
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if err != nil {
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return nil, err
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}
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now := time.Now()
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location.TestedDigest = storageTestDigest(value)
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location.TestedAt = &now
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if err := s.repo.SaveStorageLocation(location); err != nil {
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return nil, err
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}
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return &OSSConnectionTestResult{OK: true, Message: "连接测试通过", TestedAt: now, TestedDigest: location.TestedDigest}, nil
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}
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func verifyOSSConnection(value ossSettingValue, testKey string) error {
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payload := []byte("yingce-storage-test")
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// 连接测试验证服务端到对象存储的真实读写权限。CDN 是浏览器读取出口，
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// 可能存在回源鉴权或边缘同步延迟，不能参与刚写入对象的最小读写测试。
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testValue := value
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testValue.CDNBaseURL = ""
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if _, err := putOSSObject(testValue, testKey, "application/octet-stream", int64(len(payload)), bytes.NewReader(payload)); err != nil {
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return storageConnectionTestError(testValue.Provider, "写入", err)
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}
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stream, err := getOSSObjectRange(testValue, testKey, "bytes=0-3")
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var rangeErr error
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if err != nil {
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rangeErr = err
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} else {
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rangeErr = verifyOSSConnectionRead(stream, payload)
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}
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if err := deleteOSSObject(testValue, testKey); err != nil {
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return storageConnectionTestError(testValue.Provider, "删除", err)
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}
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if rangeErr != nil {
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return storageConnectionTestError(testValue.Provider, "Range 读取", rangeErr)
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}
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return nil
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}
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func verifyOSSConnectionRead(stream *ossObjectStream, payload []byte) error {
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if stream == nil || stream.Body == nil {
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return fmt.Errorf("%w：响应为空", errOSSConnectionReadMismatch)
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}
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data, readErr := io.ReadAll(io.LimitReader(stream.Body, int64(len(payload)+1)))
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closeErr := stream.Body.Close()
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if readErr != nil {
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return fmt.Errorf("对象存储响应读取失败：%w", readErr)
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}
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if closeErr != nil {
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return fmt.Errorf("对象存储响应关闭失败：%w", closeErr)
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}
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// HTTP 允许服务端忽略 Range 并返回 200 + 完整对象。应用的资源代理也会
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// 原样透传这种响应，因此连接测试应同时接受完整读取与标准的 206 分段读取。
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switch stream.StatusCode {
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case http.StatusPartialContent:
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if len(payload) >= 4 && bytes.Equal(data, payload[:4]) {
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return nil
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}
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case http.StatusOK:
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if bytes.Equal(data, payload) {
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return nil
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}
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}
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return fmt.Errorf("%w（HTTP %d，读取 %d 字节）", errOSSConnectionReadMismatch, stream.StatusCode, len(data))
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}
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func storageConnectionTestError(provider string, operation string, cause error) error {
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provider = strings.ToLower(strings.TrimSpace(provider))
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providerName := "对象存储"
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switch provider {
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case aliyunOSSProvider:
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providerName = "阿里云 OSS"
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case tencentCOSProvider:
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providerName = "腾讯云 COS"
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case qiniuKodoProvider:
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providerName = "七牛云 Kodo"
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case s3Provider:
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providerName = "S3 兼容存储"
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}
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if errors.Is(cause, context.DeadlineExceeded) {
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return WrapAppError(http.StatusGatewayTimeout, fmt.Sprintf("%s %s测试超时，请检查 Endpoint 和服务端网络", providerName, operation), cause)
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}
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var networkErr net.Error
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if errors.As(cause, &networkErr) && networkErr.Timeout() {
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return WrapAppError(http.StatusGatewayTimeout, fmt.Sprintf("%s %s测试超时，请检查 Endpoint 和服务端网络", providerName, operation), cause)
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}
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if operation == "Range 读取" && errors.Is(cause, errOSSConnectionReadMismatch) {
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return WrapAppError(http.StatusBadGateway, fmt.Sprintf("%s Range 读取返回的数据与刚写入对象不一致，请检查 Endpoint 或出网代理是否忽略、改写了 Range 请求", providerName), cause)
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}
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if provider == tencentCOSProvider {
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var responseErr *cos.ErrorResponse
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if errors.As(cause, &responseErr) && responseErr.Response != nil {
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switch responseErr.Response.StatusCode {
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case http.StatusBadRequest, http.StatusUnprocessableEntity:
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return WrapAppError(http.StatusBadGateway, fmt.Sprintf("腾讯云 COS %s请求被拒绝，请检查 Bucket、Region 和 Endpoint", operation), cause)
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case http.StatusUnauthorized, http.StatusForbidden:
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return WrapAppError(http.StatusBadGateway, fmt.Sprintf("腾讯云 COS %s鉴权失败，请检查 SecretId、SecretKey 和 Bucket 权限", operation), cause)
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case http.StatusNotFound:
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return WrapAppError(http.StatusBadGateway, fmt.Sprintf("腾讯云 COS %s未找到 Bucket，请检查 Bucket、Region 和 Endpoint", operation), cause)
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case http.StatusTooManyRequests:
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return WrapAppError(http.StatusBadGateway, fmt.Sprintf("腾讯云 COS %s请求过于频繁，请稍后重试", operation), cause)
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}
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if responseErr.Response.StatusCode >= http.StatusInternalServerError {
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return WrapAppError(http.StatusBadGateway, fmt.Sprintf("腾讯云 COS %s服务暂时不可用，请稍后重试", operation), cause)
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}
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}
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}
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return WrapAppError(http.StatusBadGateway, fmt.Sprintf("%s %s测试失败，请检查 Endpoint、Bucket、访问密钥和存储桶权限", providerName, operation), cause)
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}
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func (s *Service) upsertStorageLocation(scope string, ownerID string, value ossSettingValue) (*model.StorageLocation, error) {
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digest := storageLocationDigest(value)
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location, err := s.repo.StorageLocationByDigest(scope, ownerID, value.Provider, digest)
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if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, err
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}
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stored, err := s.encryptOSSSettingSecrets(value)
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if err != nil {
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return nil, err
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}
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stored.Enabled = true
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stored.StorageLocationID = ""
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encoded, err := json.Marshal(stored)
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if err != nil {
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return nil, err
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}
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if location == nil {
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location = &model.StorageLocation{ID: newID(), Scope: scope, OwnerID: ownerID, Provider: value.Provider, LocationDigest: digest, ValueJSON: string(encoded)}
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if err := s.repo.CreateStorageLocation(location); err != nil {
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return nil, err
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}
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return location, nil
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}
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location.ValueJSON = string(encoded)
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return location, nil
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}
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func (s *Service) storageLocationValue(id string) (*model.StorageLocation, ossSettingValue, error) {
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location, err := s.repo.StorageLocation(id)
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if err != nil {
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return nil, ossSettingValue{}, err
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}
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var value ossSettingValue
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if err := json.Unmarshal([]byte(location.ValueJSON), &value); err != nil {
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return nil, ossSettingValue{}, errors.New("对象存储位置配置格式无效")
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}
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if _, err := s.decryptOSSSettingSecrets(&value); err != nil {
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return nil, ossSettingValue{}, err
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}
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value.StorageLocationID = location.ID
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return location, normalizeOSSSetting(value), nil
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}
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func (s *Service) requireTestedS3Location(scope string, ownerID string, value ossSettingValue) (*model.StorageLocation, error) {
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location, err := s.repo.StorageLocationByDigest(scope, ownerID, s3Provider, storageLocationDigest(value))
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, BadAuthRequest("S3 关键配置尚未通过连接测试")
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}
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return nil, err
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}
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if location.TestedAt == nil || location.TestedDigest != storageTestDigest(value) {
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return nil, BadAuthRequest("S3 关键配置或凭据已变化，请重新连接测试")
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}
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return location, nil
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}
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func (s *Service) populateStorageLocationPublic(result *PublicOSSSetting, scope string, ownerID string, id string) error {
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count, err := s.repo.StorageLocationHistoryCount(scope, ownerID)
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if err != nil {
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return err
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}
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result.HistoryCount = count
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if id == "" {
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return nil
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}
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location, err := s.repo.StorageLocation(id)
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if err != nil {
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return err
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}
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result.TestedAt = location.TestedAt
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result.TestedDigest = location.TestedDigest
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result.ReferencedResourceCount, err = s.repo.StorageLocationResourceCount(id)
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return err
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}
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func deleteOSSObject(setting ossSettingValue, objectKey string) error {
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switch normalizeOSSSetting(setting).Provider {
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case s3Provider:
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return deleteS3Object(setting, objectKey)
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case tencentCOSProvider:
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return deleteTencentCOSObject(setting, objectKey)
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case qiniuKodoProvider:
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return deleteQiniuObject(setting, objectKey)
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default:
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return deleteAliyunOSSObject(setting, objectKey)
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}
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}
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