405 lines
13 KiB
Go
405 lines
13 KiB
Go
package service
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import (
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"context"
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"encoding/json"
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"errors"
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"net/http"
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"strings"
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"time"
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"infinite-canvas/backend/internal/model"
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"gorm.io/gorm"
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)
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type ChannelModelRequest struct {
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ModelKey string `json:"modelKey"`
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DisplayName string `json:"displayName"`
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Capability string `json:"capability"`
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Protocol string `json:"protocol"`
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BillingMode string `json:"billingMode"`
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UnitPriceMicrocredits int64 `json:"unitPriceMicrocredits"`
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PriceConfigured bool `json:"priceConfigured"`
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Enabled *bool `json:"enabled"`
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}
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// AdminChannelModelFetchResult 是管理员从上游拉目录后的汇总：models 为去重后的标识，added 为本次新建条数。
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type AdminChannelModelFetchResult struct {
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Models []string `json:"models"`
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Added int64 `json:"added"`
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}
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type AdminChannelModelTestResult struct {
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DurationMs int64 `json:"durationMs"`
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}
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func (s *Service) EnsureSystemChannelModels() error {
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channels, err := s.repo.SystemChannels(true)
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if err != nil {
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return err
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}
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for index := range channels {
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items, err := s.repo.ChannelModels(channels[index].ID, true)
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if err != nil {
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return err
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}
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if len(items) == 0 {
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if err := s.syncInitialChannelModels(&channels[index], channelModelNames(channels[index])); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (s *Service) AdminChannelModels(actor *model.User, channelID string) ([]model.ChannelModel, 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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if _, err := s.repo.AdminSystemChannel(channelID); err != nil {
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return nil, err
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}
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return s.ensureChannelModels(channelID, true)
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}
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func (s *Service) SystemChannelModel(channelID string, modelKey string) (*model.ChannelModel, error) {
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return s.repo.ChannelModelByKey(channelID, strings.TrimPrefix(strings.TrimSpace(modelKey), "models/"))
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}
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func (s *Service) FetchAdminChannelModels(ctx context.Context, actor *model.User, channelID string) (*AdminChannelModelFetchResult, 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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channel, err := s.repo.AdminSystemChannel(channelID)
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if err != nil {
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return nil, err
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}
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headers, err := ParseOutboundHeadersJSON(channel.HeadersJSON)
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if err != nil {
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return nil, err
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}
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// 使用服务端保存的渠道密钥和请求头访问上游，避免敏感配置再次经过浏览器。
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models, err := s.FetchChannelModels(ctx, actor, ChannelModelsRequest{BaseURL: channel.BaseURL, APIKey: channel.APIKey, APIFormat: channel.APIFormat, Headers: headers})
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if err != nil {
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return nil, err
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}
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// 只按当前未删除记录去重；重新拉取已删除模型时应生成新的待配置记录。
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existing, err := s.repo.ChannelModels(channelID, true)
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if err != nil {
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return nil, err
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}
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known := make(map[string]struct{}, len(existing))
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for _, item := range existing {
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known[item.ModelKey] = struct{}{}
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}
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missing := make([]model.ChannelModel, 0, len(models))
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for _, name := range models {
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if _, ok := known[name]; ok {
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continue
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}
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// 自动发现不能绕过定价边界；新模型由管理员定价后再手动启用。
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missing = append(missing, model.ChannelModel{ID: newID(), ChannelID: channelID, ModelKey: name, DisplayName: name, BillingMode: "fixed_request", Enabled: false, PriceVersion: 1})
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}
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added, err := s.repo.CreateMissingChannelModels(missing)
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if err != nil {
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return nil, err
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}
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return &AdminChannelModelFetchResult{Models: models, Added: added}, nil
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}
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func (s *Service) SaveAdminChannelModel(actor *model.User, channelID string, id string, req ChannelModelRequest) (*model.ChannelModel, 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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channel, err := s.repo.AdminSystemChannel(channelID)
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if err != nil {
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return nil, err
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}
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modelKey, capability, protocol, err := normalizeChannelModelContract(channel, req)
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if err != nil {
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return nil, err
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}
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billingMode := strings.TrimSpace(req.BillingMode)
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if billingMode == "" {
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billingMode = "fixed_request"
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}
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if billingMode != "fixed_request" && billingMode != "per_second" {
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return nil, BadAuthRequest("模型计费方式仅支持按次或按秒")
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}
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if billingMode == "per_second" && capability != "video" {
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return nil, BadAuthRequest("只有视频模型可以按秒计费")
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}
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if req.UnitPriceMicrocredits < 0 {
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return nil, BadAuthRequest("模型积分价格不能小于 0")
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}
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item := &model.ChannelModel{ID: newID(), ChannelID: channelID, Enabled: true, PriceVersion: 1}
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if id != "" {
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item, err = s.repo.ChannelModelByID(channelID, id)
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if err != nil {
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return nil, err
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}
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item.PriceVersion++
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}
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conflict, conflictErr := s.repo.ChannelModelByKeyIncludingDisabled(channelID, modelKey)
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if conflictErr != nil && !errors.Is(conflictErr, gorm.ErrRecordNotFound) {
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return nil, conflictErr
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}
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if conflict != nil && conflict.ID != item.ID {
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return nil, BadAuthRequest("该渠道已存在模型 " + modelKey + "，请直接编辑已有模型")
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}
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item.ModelKey = modelKey
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item.DisplayName = strings.TrimSpace(req.DisplayName)
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if item.DisplayName == "" {
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item.DisplayName = modelKey
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}
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item.Capability = capability
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item.Protocol = protocol
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item.BillingMode = billingMode
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item.UnitPriceMicrocredits = req.UnitPriceMicrocredits
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item.PriceConfigured = req.PriceConfigured
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if req.Enabled != nil {
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item.Enabled = *req.Enabled
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}
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if err := s.repo.SaveChannelModel(item); err != nil {
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return nil, err
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}
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if err := s.syncChannelModelNames(channel); err != nil {
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return nil, err
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}
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return item, nil
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}
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func (s *Service) TestAdminChannelModel(ctx context.Context, actor *model.User, channelID string, req ChannelModelRequest) (*AdminChannelModelTestResult, 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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channel, err := s.repo.AdminSystemChannel(channelID)
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if err != nil {
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return nil, err
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}
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modelKey, capability, protocol, err := normalizeChannelModelContract(channel, req)
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if err != nil {
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return nil, err
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}
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if strings.TrimSpace(channel.BaseURL) == "" || strings.TrimSpace(channel.APIKey) == "" {
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return nil, BadAuthRequest("请先在渠道中配置 Base URL 和 API Key")
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}
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headers, err := ParseOutboundHeadersJSON(channel.HeadersJSON)
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if err != nil {
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return nil, err
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}
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prompt := map[string]string{
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"text": "Reply with OK.",
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"image": "A simple gray circle on a white background.",
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"video": "A static gray circle on a white background.",
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"audio": "Model test.",
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}[capability]
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videoSeconds := "6"
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videoSecondsValue := 6
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if protocol == model.ChannelInterfaceVolcengineJiMengVideo {
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videoSeconds = "5"
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videoSecondsValue = 5
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}
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input := canvasGenerationInput{
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Mode: capability,
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Prompt: prompt,
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Config: providerConfig{
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ChannelID: channel.ID,
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APIFormat: channel.APIFormat,
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InterfaceType: string(protocol),
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BaseURL: channel.BaseURL,
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APIKey: channel.APIKey,
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SecretKey: channel.SecretKey,
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Headers: headers,
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Model: modelKey,
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Size: map[string]string{"image": "1024x1024", "video": "16:9"}[capability],
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Quality: "auto",
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Count: "1",
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VideoSeconds: videoSeconds,
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VQuality: "720",
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VideoGenerateAudio: "false",
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VideoWatermark: "false",
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AudioVoice: "alloy",
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AudioFormat: "mp3",
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AudioSpeed: "1",
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},
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Metadata: map[string]interface{}{},
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}
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// 测试复用真实生成协议、运行时并发和熔断策略，但不创建用户任务或计费订单。
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testCtx, cancel := context.WithTimeout(ctx, 10*time.Minute)
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defer cancel()
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testCtx = context.WithValue(testCtx, providerAnalyticsKey{}, providerAnalyticsContext{
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Service: s, UserID: actor.ID, ChannelID: channel.ID, Capability: capability,
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Operation: "admin_model_test", Model: modelKey, VideoSeconds: videoSecondsValue,
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})
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startedAt := time.Now()
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switch capability {
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case "text":
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_, err = runTextTask(testCtx, input)
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case "image":
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_, err = runImageTask(testCtx, input)
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case "video":
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_, err = runVideoTask(testCtx, input)
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case "audio":
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_, err = runAudioTask(testCtx, input)
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}
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if err != nil {
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status := http.StatusBadGateway
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if errors.Is(err, context.DeadlineExceeded) {
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status = http.StatusGatewayTimeout
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}
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return nil, &AuthError{Status: status, Message: "模型测试失败：" + truncateRunes(err.Error(), 1000)}
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}
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return &AdminChannelModelTestResult{DurationMs: time.Since(startedAt).Milliseconds()}, nil
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}
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func normalizeChannelModelContract(channel *model.ModelChannel, req ChannelModelRequest) (string, string, model.ChannelInterfaceType, error) {
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modelKey := strings.TrimPrefix(strings.TrimSpace(req.ModelKey), "models/")
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if modelKey == "" {
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return "", "", "", BadAuthRequest("请填写模型标识")
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}
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capability := normalizeCapability(req.Capability)
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if capability == "" {
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return "", "", "", BadAuthRequest("请选择模型能力")
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}
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protocol := model.ChannelInterfaceType(strings.TrimSpace(req.Protocol))
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if !validChannelInterfaceType(protocol) {
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return "", "", "", BadAuthRequest("请选择有效的模型请求协议")
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}
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if expected := capabilityForProtocol(protocol); expected != "" && expected != capability {
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return "", "", "", BadAuthRequest("模型能力与请求协议不匹配")
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}
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if (protocol == model.ChannelInterfaceVolcengineJiMengImage || protocol == model.ChannelInterfaceVolcengineJiMengVideo) && (strings.TrimSpace(channel.APIKey) == "" || strings.TrimSpace(channel.SecretKey) == "") {
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return "", "", "", BadAuthRequest("即梦官方协议需要先在渠道中配置 Access Key 和 Secret Key")
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}
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return modelKey, capability, protocol, nil
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}
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func (s *Service) DeleteAdminChannelModel(actor *model.User, channelID string, id string) error {
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if err := s.RequireAdmin(actor); err != nil {
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return err
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}
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if _, err := s.repo.AdminSystemChannel(channelID); err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return BadAuthRequest("系统渠道不存在或已删除")
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}
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return err
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}
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if _, err := s.repo.ChannelModelByID(channelID, id); err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return BadAuthRequest("渠道模型不存在或已删除")
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}
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return err
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}
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items, err := s.repo.ChannelModels(channelID, false)
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if err != nil {
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return err
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}
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names := make([]string, 0, len(items))
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for _, item := range items {
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if item.ID != id {
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names = append(names, item.ModelKey)
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}
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}
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encoded, err := json.Marshal(names)
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if err != nil {
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return err
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}
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// 删除模型与渠道的兼容模型清单必须同事务提交，避免接口报错但列表已部分变化。
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err = s.repo.DeleteChannelModel(channelID, id, string(encoded), time.Now())
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return BadAuthRequest("渠道模型不存在或已删除")
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}
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return err
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}
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func (s *Service) syncInitialChannelModels(channel *model.ModelChannel, names []string) error {
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existing, err := s.repo.ChannelModels(channel.ID, true)
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if err != nil {
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return err
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}
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byKey := make(map[string]*model.ChannelModel, len(existing))
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for index := range existing {
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byKey[existing[index].ModelKey] = &existing[index]
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}
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desired := make(map[string]bool, len(names))
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for _, name := range uniqueNonEmpty(names) {
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name = strings.TrimPrefix(name, "models/")
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desired[name] = true
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if item := byKey[name]; item != nil {
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if !item.Enabled {
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item.Enabled = true
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item.PriceVersion++
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if err := s.repo.SaveChannelModel(item); err != nil {
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return err
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}
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}
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continue
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}
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item := model.ChannelModel{ID: newID(), ChannelID: channel.ID, ModelKey: name, DisplayName: name, BillingMode: "fixed_request", Enabled: false, PriceVersion: 1}
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if err := s.repo.SaveChannelModel(&item); err != nil {
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return err
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}
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}
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for index := range existing {
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if existing[index].Enabled && !desired[existing[index].ModelKey] {
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existing[index].Enabled = false
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existing[index].PriceVersion++
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if err := s.repo.SaveChannelModel(&existing[index]); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (s *Service) ensureChannelModels(channelID string, includeDisabled bool) ([]model.ChannelModel, error) {
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items, err := s.repo.ChannelModels(channelID, includeDisabled)
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if err != nil || len(items) > 0 {
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return items, err
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}
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channel, err := s.repo.AdminSystemChannel(channelID)
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if err != nil {
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return nil, err
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}
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if err := s.syncInitialChannelModels(channel, channelModelNames(*channel)); err != nil {
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return nil, err
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}
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return s.repo.ChannelModels(channelID, includeDisabled)
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}
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func (s *Service) syncChannelModelNames(channel *model.ModelChannel) error {
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items, err := s.repo.ChannelModels(channel.ID, false)
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if err != nil {
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return err
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}
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names := make([]string, 0, len(items))
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for _, item := range items {
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names = append(names, item.ModelKey)
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}
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encoded, err := json.Marshal(names)
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if err != nil {
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return err
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}
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channel.ModelsJSON = string(encoded)
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return s.repo.Save(channel)
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}
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func capabilityForProtocol(protocol model.ChannelInterfaceType) string {
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switch protocol {
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case model.ChannelInterfaceOpenAIImage, model.ChannelInterfaceVolcengineArkImage, model.ChannelInterfaceVolcengineJiMengImage:
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return "image"
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case model.ChannelInterfaceOpenAIAudio:
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return "audio"
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case model.ChannelInterfaceNewAPIVideo, model.ChannelInterfaceNewAPIChannel1, model.ChannelInterfaceNewAPIChannel2, model.ChannelInterfaceXAIVideo, model.ChannelInterfaceVolcengineArkVideo, model.ChannelInterfaceVolcengineJiMengVideo, model.ChannelInterfaceGeminiVeo:
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return "video"
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case model.ChannelInterfaceChatCompletion, model.ChannelInterfaceOpenAIResponse:
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return "text"
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default:
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return ""
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}
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}
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