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refactor: 后端代码优化 11 项（codestable/refactors/2026-04-25-backend-cleanup）

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- 提取 getWKFromContext 辅助函数，消除 handler 中 5 处重复代码
- 提取 retryCode 函数，消除 Login/performStudy 中验证码重试重复
- 提取 removeSession 内部方法，消除 Del/ClearAll/ClearExpired 中 3 处重复
- 提取 WK.UserKey() 方法，消除 4 处 userKey 手动拼接
- SessionManager.Get() 改用 RLock 优化读性能
- GetRecords 递归分页改为迭代，避免栈溢出
- prepareRequestClient 添加配置缓存，仅在 debug 设置变化时重建
- 修正 schedule.go 时区为 Asia/Shanghai + cron "0 6 * * *"
- 修正 typo "以达到" → "已达到"
- 删除未使用的 QAList struct
- 修复 bufferHub.append 切片内存泄漏

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
zhilv
2026-04-26 13:07:45 +08:00
parent 2a6732ffe7
commit 536aa506f9
9 changed files with 488 additions and 94 deletions
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56
internal/ckwk/api.go
View File

@@ -43,6 +43,11 @@ type WK struct {
authMu sync.Mutex
sessionID string
sessionManager *SessionManager
// 缓存上次应用到的 debug 配置，仅在配置变化时重建
lastDebugEnabled bool
lastDebugProxy string
lastDebugSkipSSLVerify bool
}
func NewWK(username, password, host string, cookies []*http.Cookie) *WK {
@@ -86,25 +91,45 @@ func (wk *WK) bindSession(sm *SessionManager, sessionID string) {
wk.sessionID = sessionID
}
// UserKey 返回 "host:username" 格式的用户标识，用于 SessionManager 的 userToSession 索引
func (wk *WK) UserKey() string {
return wk.Host + ":" + wk.Username
}
func (wk *WK) prepareRequestClient() {
if wk == nil || wk.Req == nil {
return
}
debugEnabled := conf.IsRuntimeDebugEnabled()
debugProxy := conf.DebugProxy
debugSkipSSLVerify := conf.DebugSkipSSLVerify
// 仅在 debug 配置变化时重建
if wk.lastDebugEnabled == debugEnabled &&
wk.lastDebugProxy == debugProxy &&
wk.lastDebugSkipSSLVerify == debugSkipSSLVerify {
return
}
cfg := &request.Config{
UserAgent: request.DefaultUserAgent,
VerifySSL: true,
Debug: conf.IsRuntimeDebugEnabled(),
Debug: debugEnabled,
}
if conf.IsRuntimeDebugEnabled() {
cfg.Proxy = conf.DebugProxy
cfg.VerifySSL = !conf.DebugSkipSSLVerify
if debugEnabled {
cfg.Proxy = debugProxy
cfg.VerifySSL = !debugSkipSSLVerify
}
request.ApplyConfig(wk.Req, cfg)
if len(wk.Cookies) > 0 {
wk.Req.SetCookies(wk.Cookies)
}
wk.lastDebugEnabled = debugEnabled
wk.lastDebugProxy = debugProxy
wk.lastDebugSkipSSLVerify = debugSkipSSLVerify
}
func (wk *WK) newRequest() *resty.Request {
@@ -154,18 +179,23 @@ func (wk *WK) Code() (string, error) {
return result.Data, nil
}
// Login: Login WebSite
func (wk *WK) Login() (bool, error) {
yzm := ""
for i := 1; i <= 3; i++ {
yzm, _ = wk.Code()
// retryCode 重试获取验证码，最多 maxRetries 次
func retryCode(wk *WK, maxRetries int) (string, error) {
for i := 1; i <= maxRetries; i++ {
yzm, _ := wk.Code()
if yzm != "" {
break
return yzm, nil
}
log.Warnf("第 %d 次获取验证码失败, 正在重试...\n", i)
}
if yzm == "" {
return false, fmt.Errorf("以达到最大重试次数，验证码获取失败，登录终止。")
return "", fmt.Errorf("已达到最大重试次数，验证码获取失败")
}
// Login: Login WebSite
func (wk *WK) Login() (bool, error) {
yzm, err := retryCode(wk, 3)
if err != nil {
return false, err
}
resp, err := wk.newRequest().
@@ -415,7 +445,7 @@ func (wk *WK) performStudy(nodeID, studyID, studyTime string, status StudyStatus
log.Warnf("第 %d 次获取验证码失败, 正在重试...\n", i)
}
if yzm == "" {
return nil, fmt.Errorf("以达到最大重试次数，验证码获取失败，登录终止。")
return nil, fmt.Errorf("已达到最大重试次数，验证码获取失败，登录终止。")
}
data = map[string]string{
"nodeId": nodeID,

65
internal/ckwk/session_manager.go
View File

@@ -29,12 +29,23 @@ func NewSessionManager() *SessionManager {
}
}
// removeSession 取消 context、删除双 map 条目、记日志
func (m *SessionManager) removeSession(sessionID string, item SessionItem) {
if item.cancel != nil {
item.cancel()
}
userKey := item.Instance.UserKey()
delete(m.userToSession, userKey)
delete(m.sessions, sessionID)
log.Info("删除 Session", zap.String("id", sessionID))
}
// Store: 保存 session 并返回 session id
func (m *SessionManager) Store(wk *WK) string {
m.mu.Lock()
defer m.mu.Unlock()
userKey := wk.Host + ":" + wk.Username
userKey := wk.UserKey()
if oldID, exists := m.userToSession[userKey]; exists {
item := m.sessions[oldID]
if item.cancel != nil {
@@ -78,16 +89,20 @@ func (m *SessionManager) Store(wk *WK) string {
// Get: 获取指定 session id 的 wk
func (m *SessionManager) Get(sessionID string) (*WK, bool) {
m.mu.Lock()
defer m.mu.Unlock()
m.mu.RLock()
item, ok := m.sessions[sessionID]
if ok {
item.LastValue = time.Now()
m.sessions[sessionID] = item
return item.Instance, true
if !ok {
m.mu.RUnlock()
return nil, false
}
return nil, false
m.mu.RUnlock()
m.mu.Lock()
item.LastValue = time.Now()
m.sessions[sessionID] = item
m.mu.Unlock()
return item.Instance, true
}
func (m *SessionManager) Del(sessionID string) {
@@ -95,16 +110,7 @@ func (m *SessionManager) Del(sessionID string) {
defer m.mu.Unlock()
if item, ok := m.sessions[sessionID]; ok {
userKey := item.Instance.Host + ":" + item.Instance.Username
if item.cancel != nil {
item.cancel()
}
delete(m.userToSession, userKey)
delete(m.sessions, sessionID)
log.Info("删除 Session", zap.String("id", sessionID))
m.removeSession(sessionID, item)
}
}
@@ -141,16 +147,7 @@ func (m *SessionManager) ClearAll() {
defer m.mu.Unlock()
for sessionID, item := range m.sessions {
// 停止 KeepAlive
if item.cancel != nil {
item.cancel()
}
userKey := item.Instance.Host + ":" + item.Instance.Username
delete(m.userToSession, userKey)
delete(m.sessions, sessionID)
log.Info("清理 Session", zap.String("id", sessionID))
m.removeSession(sessionID, item)
}
log.Info("所有 Session 已清空")
@@ -164,15 +161,7 @@ func (m *SessionManager) ClearExpired(d time.Duration) {
for sessionID, item := range m.sessions {
if now.Sub(item.LastValue) > d {
if item.cancel != nil {
item.cancel()
}
userKey := item.Instance.Host + ":" + item.Instance.Username
delete(m.userToSession, userKey)
delete(m.sessions, sessionID)
log.Info("清理过期 Session", zap.String("id", sessionID))
m.removeSession(sessionID, item)
}
}
}

58
internal/ckwk/types.go
View File

@@ -25,7 +25,7 @@ const (
StudyStart StudyStatus = 1 // 开始学习
Study StudyStatus = 2 // 学习中
StudyOver StudyStatus = 3 // 学习介绍
StudyOver StudyStatus = 3 // 学习结束
)
// User: 用户
@@ -49,11 +49,36 @@ type Course struct {
Type string `json:"type"`
}
type QAList struct {
}
// GetRecords 分页获取记录（迭代实现）
func GetRecords[T any](wk *WK, rType RecordType, courseID, page string) (*AllRecordResp[T], error) {
log.Debug("获取记录信息", zap.String("host", wk.Host), zap.String("type", string(rType)))
result, err := fetchRecordPage[T](wk, rType, courseID, page)
if err != nil {
return nil, err
}
if !result.Status {
return &result, fmt.Errorf("接口报错: %s", result.Msg)
}
for result.PageInfo.Page < result.PageInfo.PageCount {
nextPage := fmt.Sprint(result.PageInfo.Page + 1)
nextResult, err := fetchRecordPage[T](wk, rType, courseID, nextPage)
if err != nil {
return nil, err
}
result.List = append(result.List, nextResult.List...)
log.Debug("Page", zap.Int("currentPage", result.PageInfo.Page), zap.Int("nextPage", nextResult.PageInfo.Page))
result.PageInfo = nextResult.PageInfo
}
return &result, nil
}
// fetchRecordPage 获取单页记录
func fetchRecordPage[T any](wk *WK, rType RecordType, courseID, page string) (AllRecordResp[T], error) {
var result AllRecordResp[T]
resp, err := wk.newRequest().
SetQueryParams(map[string]string{
"courseId": courseID,
@@ -62,32 +87,13 @@ func GetRecords[T any](wk *WK, rType RecordType, courseID, page string) (*AllRec
}).
Get(fmt.Sprintf("https://%s/user/study_record%s.json", wk.Host, rType))
if err != nil {
return nil, err
return result, err
}
var result AllRecordResp[T]
if err := json.Unmarshal(resp.Bytes(), &result); err != nil {
log.Error("JSON解析失败", zap.Error(err))
return nil, err
return result, err
}
if !result.Status {
return &result, fmt.Errorf("接口报错: %s", result.Msg)
}
currentPage := result.PageInfo.Page
totalPages := result.PageInfo.PageCount
for currentPage < totalPages {
nextPage := fmt.Sprint(currentPage + 1)
nextResult, err := GetRecords[T](wk, rType, courseID, nextPage)
if err != nil {
return nil, err
}
result.List = append(result.List, nextResult.List...)
log.Debug("Page", zap.Int("currentPage", currentPage), zap.Int("Page", nextResult.PageInfo.Page))
currentPage = nextResult.PageInfo.Page
}
return &result, nil
return result, nil
}