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133 lines
4.6 KiB
Go
133 lines
4.6 KiB
Go
package service
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import (
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"context"
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"strings"
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"time"
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)
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// TokenRefresher 定义平台特定的token刷新策略接口
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// 通过此接口可以扩展支持不同平台(Anthropic/OpenAI/Gemini)
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type TokenRefresher interface {
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// CanRefresh 检查此刷新器是否能处理指定账号
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CanRefresh(account *Account) bool
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// NeedsRefresh 检查账号的token是否需要刷新
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NeedsRefresh(account *Account, refreshWindow time.Duration) bool
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// Refresh 执行token刷新,返回更新后的credentials
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// 注意:返回的map应该保留原有credentials中的所有字段,只更新token相关字段
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Refresh(ctx context.Context, account *Account) (map[string]any, error)
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}
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// ClaudeTokenRefresher 处理Anthropic/Claude OAuth token刷新
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type ClaudeTokenRefresher struct {
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oauthService *OAuthService
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}
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// NewClaudeTokenRefresher 创建Claude token刷新器
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func NewClaudeTokenRefresher(oauthService *OAuthService) *ClaudeTokenRefresher {
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return &ClaudeTokenRefresher{
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oauthService: oauthService,
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}
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}
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// CacheKey 返回用于分布式锁的缓存键
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func (r *ClaudeTokenRefresher) CacheKey(account *Account) string {
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return ClaudeTokenCacheKey(account)
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}
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// CanRefresh 检查是否能处理此账号
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// 处理 anthropic 平台的 oauth 与 setup-token 类型账号。
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// 两者的 access_token 均为短期令牌(expires_in=28800,即 8h),到期都需刷新;
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// setup-token 之前被排除会导致其 access_token 过期后请求 401。
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// 此处与手动刷新入口(account.IsOAuth())保持一致,实际是否刷新由 NeedsRefresh
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// 基于 expires_at 门控,并在分布式锁保护下执行,不会造成过度刷新。
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func (r *ClaudeTokenRefresher) CanRefresh(account *Account) bool {
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return account.Platform == PlatformAnthropic && account.IsOAuth()
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}
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// NeedsRefresh 检查token是否需要刷新
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// 基于 expires_at 字段判断是否在刷新窗口内
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func (r *ClaudeTokenRefresher) NeedsRefresh(account *Account, refreshWindow time.Duration) bool {
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expiresAt := account.GetCredentialAsTime("expires_at")
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if expiresAt == nil {
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return false
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}
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return time.Until(*expiresAt) < refreshWindow
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}
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// Refresh 执行token刷新
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// 保留原有credentials中的所有字段,只更新token相关字段
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func (r *ClaudeTokenRefresher) Refresh(ctx context.Context, account *Account) (map[string]any, error) {
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tokenInfo, err := r.oauthService.RefreshAccountToken(ctx, account)
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if err != nil {
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return nil, err
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}
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newCredentials := BuildClaudeAccountCredentials(tokenInfo)
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newCredentials = MergeCredentials(account.Credentials, newCredentials)
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return newCredentials, nil
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}
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// OpenAITokenRefresher 处理 OpenAI OAuth token刷新
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type OpenAITokenRefresher struct {
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openaiOAuthService *OpenAIOAuthService
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accountRepo AccountRepository
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}
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// NewOpenAITokenRefresher 创建 OpenAI token刷新器
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func NewOpenAITokenRefresher(openaiOAuthService *OpenAIOAuthService, accountRepo AccountRepository) *OpenAITokenRefresher {
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return &OpenAITokenRefresher{
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openaiOAuthService: openaiOAuthService,
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accountRepo: accountRepo,
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}
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}
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// CacheKey 返回用于分布式锁的缓存键
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func (r *OpenAITokenRefresher) CacheKey(account *Account) string {
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return OpenAITokenCacheKey(account)
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}
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// CanRefresh 检查是否能处理此账号
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func (r *OpenAITokenRefresher) CanRefresh(account *Account) bool {
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if account.IsCredentialShadow() {
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return false
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}
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return account.Platform == PlatformOpenAI && account.Type == AccountTypeOAuth
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}
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// NeedsRefresh 检查token是否需要刷新
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// expires_at 缺失且处于限流状态时需要刷新,防止限流期间 token 静默过期
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func (r *OpenAITokenRefresher) NeedsRefresh(account *Account, refreshWindow time.Duration) bool {
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if account.IsOpenAIPersonalAccessToken() {
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return false
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}
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if strings.TrimSpace(account.GetOpenAIRefreshToken()) == "" {
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return false
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}
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expiresAt := account.GetCredentialAsTime("expires_at")
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if expiresAt == nil {
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return account.IsRateLimited()
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}
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return time.Until(*expiresAt) < refreshWindow
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}
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// Refresh 执行token刷新
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// 保留原有credentials中的所有字段,只更新token相关字段
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func (r *OpenAITokenRefresher) Refresh(ctx context.Context, account *Account) (map[string]any, error) {
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tokenInfo, err := r.openaiOAuthService.RefreshAccountToken(ctx, account)
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if err != nil {
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return nil, err
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}
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// 使用服务提供的方法构建新凭证,并保留原有字段
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newCredentials := r.openaiOAuthService.BuildAccountCredentials(tokenInfo)
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newCredentials = MergeCredentials(account.Credentials, newCredentials)
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newCredentials = NormalizeOpenAIPersonalAccessTokenCredentials(account, tokenInfo, newCredentials)
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return newCredentials, nil
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}
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