334 lines
10 KiB
Go
334 lines
10 KiB
Go
package service
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"log"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"github.com/Wei-Shaw/sub2api/internal/config"
|
|
"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
|
|
)
|
|
|
|
const (
|
|
defaultDashboardStatsFreshTTL = 15 * time.Second
|
|
defaultDashboardStatsCacheTTL = 30 * time.Second
|
|
defaultDashboardStatsRefreshTimeout = 30 * time.Second
|
|
)
|
|
|
|
// ErrDashboardStatsCacheMiss 标记仪表盘缓存未命中。
|
|
var ErrDashboardStatsCacheMiss = errors.New("仪表盘缓存未命中")
|
|
|
|
// DashboardStatsCache 定义仪表盘统计缓存接口。
|
|
type DashboardStatsCache interface {
|
|
GetDashboardStats(ctx context.Context) (string, error)
|
|
SetDashboardStats(ctx context.Context, data string, ttl time.Duration) error
|
|
DeleteDashboardStats(ctx context.Context) error
|
|
}
|
|
|
|
type dashboardStatsRangeFetcher interface {
|
|
GetDashboardStatsWithRange(ctx context.Context, start, end time.Time) (*usagestats.DashboardStats, error)
|
|
}
|
|
|
|
type dashboardStatsCacheEntry struct {
|
|
Stats *usagestats.DashboardStats `json:"stats"`
|
|
UpdatedAt int64 `json:"updated_at"`
|
|
}
|
|
|
|
// DashboardService 提供管理员仪表盘统计服务。
|
|
type DashboardService struct {
|
|
usageRepo UsageLogRepository
|
|
aggRepo DashboardAggregationRepository
|
|
cache DashboardStatsCache
|
|
cacheFreshTTL time.Duration
|
|
cacheTTL time.Duration
|
|
refreshTimeout time.Duration
|
|
refreshing int32
|
|
aggEnabled bool
|
|
aggInterval time.Duration
|
|
aggLookback time.Duration
|
|
aggUsageDays int
|
|
}
|
|
|
|
func NewDashboardService(usageRepo UsageLogRepository, aggRepo DashboardAggregationRepository, cache DashboardStatsCache, cfg *config.Config) *DashboardService {
|
|
freshTTL := defaultDashboardStatsFreshTTL
|
|
cacheTTL := defaultDashboardStatsCacheTTL
|
|
refreshTimeout := defaultDashboardStatsRefreshTimeout
|
|
aggEnabled := true
|
|
aggInterval := time.Minute
|
|
aggLookback := 2 * time.Minute
|
|
aggUsageDays := 90
|
|
if cfg != nil {
|
|
if !cfg.Dashboard.Enabled {
|
|
cache = nil
|
|
}
|
|
if cfg.Dashboard.StatsFreshTTLSeconds > 0 {
|
|
freshTTL = time.Duration(cfg.Dashboard.StatsFreshTTLSeconds) * time.Second
|
|
}
|
|
if cfg.Dashboard.StatsTTLSeconds > 0 {
|
|
cacheTTL = time.Duration(cfg.Dashboard.StatsTTLSeconds) * time.Second
|
|
}
|
|
if cfg.Dashboard.StatsRefreshTimeoutSeconds > 0 {
|
|
refreshTimeout = time.Duration(cfg.Dashboard.StatsRefreshTimeoutSeconds) * time.Second
|
|
}
|
|
aggEnabled = cfg.DashboardAgg.Enabled
|
|
if cfg.DashboardAgg.IntervalSeconds > 0 {
|
|
aggInterval = time.Duration(cfg.DashboardAgg.IntervalSeconds) * time.Second
|
|
}
|
|
if cfg.DashboardAgg.LookbackSeconds > 0 {
|
|
aggLookback = time.Duration(cfg.DashboardAgg.LookbackSeconds) * time.Second
|
|
}
|
|
if cfg.DashboardAgg.Retention.UsageLogsDays > 0 {
|
|
aggUsageDays = cfg.DashboardAgg.Retention.UsageLogsDays
|
|
}
|
|
}
|
|
return &DashboardService{
|
|
usageRepo: usageRepo,
|
|
aggRepo: aggRepo,
|
|
cache: cache,
|
|
cacheFreshTTL: freshTTL,
|
|
cacheTTL: cacheTTL,
|
|
refreshTimeout: refreshTimeout,
|
|
aggEnabled: aggEnabled,
|
|
aggInterval: aggInterval,
|
|
aggLookback: aggLookback,
|
|
aggUsageDays: aggUsageDays,
|
|
}
|
|
}
|
|
|
|
func (s *DashboardService) GetDashboardStats(ctx context.Context) (*usagestats.DashboardStats, error) {
|
|
if s.cache != nil {
|
|
cached, fresh, err := s.getCachedDashboardStats(ctx)
|
|
if err == nil && cached != nil {
|
|
s.refreshAggregationStaleness(cached)
|
|
if !fresh {
|
|
s.refreshDashboardStatsAsync()
|
|
}
|
|
return cached, nil
|
|
}
|
|
if err != nil && !errors.Is(err, ErrDashboardStatsCacheMiss) {
|
|
log.Printf("[Dashboard] 仪表盘缓存读取失败: %v", err)
|
|
}
|
|
}
|
|
|
|
stats, err := s.refreshDashboardStats(ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get dashboard stats: %w", err)
|
|
}
|
|
return stats, nil
|
|
}
|
|
|
|
func (s *DashboardService) GetUsageTrendWithFilters(ctx context.Context, startTime, endTime time.Time, granularity string, userID, apiKeyID int64) ([]usagestats.TrendDataPoint, error) {
|
|
trend, err := s.usageRepo.GetUsageTrendWithFilters(ctx, startTime, endTime, granularity, userID, apiKeyID)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get usage trend with filters: %w", err)
|
|
}
|
|
return trend, nil
|
|
}
|
|
|
|
func (s *DashboardService) GetModelStatsWithFilters(ctx context.Context, startTime, endTime time.Time, userID, apiKeyID int64) ([]usagestats.ModelStat, error) {
|
|
stats, err := s.usageRepo.GetModelStatsWithFilters(ctx, startTime, endTime, userID, apiKeyID, 0)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get model stats with filters: %w", err)
|
|
}
|
|
return stats, nil
|
|
}
|
|
|
|
func (s *DashboardService) getCachedDashboardStats(ctx context.Context) (*usagestats.DashboardStats, bool, error) {
|
|
data, err := s.cache.GetDashboardStats(ctx)
|
|
if err != nil {
|
|
return nil, false, err
|
|
}
|
|
|
|
var entry dashboardStatsCacheEntry
|
|
if err := json.Unmarshal([]byte(data), &entry); err != nil {
|
|
s.evictDashboardStatsCache(err)
|
|
return nil, false, ErrDashboardStatsCacheMiss
|
|
}
|
|
if entry.Stats == nil {
|
|
s.evictDashboardStatsCache(errors.New("仪表盘缓存缺少统计数据"))
|
|
return nil, false, ErrDashboardStatsCacheMiss
|
|
}
|
|
|
|
age := time.Since(time.Unix(entry.UpdatedAt, 0))
|
|
return entry.Stats, age <= s.cacheFreshTTL, nil
|
|
}
|
|
|
|
func (s *DashboardService) refreshDashboardStats(ctx context.Context) (*usagestats.DashboardStats, error) {
|
|
stats, err := s.fetchDashboardStats(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
s.applyAggregationStatus(ctx, stats)
|
|
cacheCtx, cancel := s.cacheOperationContext()
|
|
defer cancel()
|
|
s.saveDashboardStatsCache(cacheCtx, stats)
|
|
return stats, nil
|
|
}
|
|
|
|
func (s *DashboardService) refreshDashboardStatsAsync() {
|
|
if s.cache == nil {
|
|
return
|
|
}
|
|
if !atomic.CompareAndSwapInt32(&s.refreshing, 0, 1) {
|
|
return
|
|
}
|
|
|
|
go func() {
|
|
defer atomic.StoreInt32(&s.refreshing, 0)
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), s.refreshTimeout)
|
|
defer cancel()
|
|
|
|
stats, err := s.fetchDashboardStats(ctx)
|
|
if err != nil {
|
|
log.Printf("[Dashboard] 仪表盘缓存异步刷新失败: %v", err)
|
|
return
|
|
}
|
|
s.applyAggregationStatus(ctx, stats)
|
|
cacheCtx, cancel := s.cacheOperationContext()
|
|
defer cancel()
|
|
s.saveDashboardStatsCache(cacheCtx, stats)
|
|
}()
|
|
}
|
|
|
|
func (s *DashboardService) fetchDashboardStats(ctx context.Context) (*usagestats.DashboardStats, error) {
|
|
if !s.aggEnabled {
|
|
if fetcher, ok := s.usageRepo.(dashboardStatsRangeFetcher); ok {
|
|
now := time.Now().UTC()
|
|
start := truncateToDayUTC(now.AddDate(0, 0, -s.aggUsageDays))
|
|
return fetcher.GetDashboardStatsWithRange(ctx, start, now)
|
|
}
|
|
}
|
|
return s.usageRepo.GetDashboardStats(ctx)
|
|
}
|
|
|
|
func (s *DashboardService) saveDashboardStatsCache(ctx context.Context, stats *usagestats.DashboardStats) {
|
|
if s.cache == nil || stats == nil {
|
|
return
|
|
}
|
|
|
|
entry := dashboardStatsCacheEntry{
|
|
Stats: stats,
|
|
UpdatedAt: time.Now().Unix(),
|
|
}
|
|
data, err := json.Marshal(entry)
|
|
if err != nil {
|
|
log.Printf("[Dashboard] 仪表盘缓存序列化失败: %v", err)
|
|
return
|
|
}
|
|
|
|
if err := s.cache.SetDashboardStats(ctx, string(data), s.cacheTTL); err != nil {
|
|
log.Printf("[Dashboard] 仪表盘缓存写入失败: %v", err)
|
|
}
|
|
}
|
|
|
|
func (s *DashboardService) evictDashboardStatsCache(reason error) {
|
|
if s.cache == nil {
|
|
return
|
|
}
|
|
cacheCtx, cancel := s.cacheOperationContext()
|
|
defer cancel()
|
|
|
|
if err := s.cache.DeleteDashboardStats(cacheCtx); err != nil {
|
|
log.Printf("[Dashboard] 仪表盘缓存清理失败: %v", err)
|
|
}
|
|
if reason != nil {
|
|
log.Printf("[Dashboard] 仪表盘缓存异常，已清理: %v", reason)
|
|
}
|
|
}
|
|
|
|
func (s *DashboardService) cacheOperationContext() (context.Context, context.CancelFunc) {
|
|
return context.WithTimeout(context.Background(), s.refreshTimeout)
|
|
}
|
|
|
|
func (s *DashboardService) applyAggregationStatus(ctx context.Context, stats *usagestats.DashboardStats) {
|
|
if stats == nil {
|
|
return
|
|
}
|
|
updatedAt := s.fetchAggregationUpdatedAt(ctx)
|
|
stats.StatsUpdatedAt = updatedAt.UTC().Format(time.RFC3339)
|
|
stats.StatsStale = s.isAggregationStale(updatedAt, time.Now().UTC())
|
|
}
|
|
|
|
func (s *DashboardService) refreshAggregationStaleness(stats *usagestats.DashboardStats) {
|
|
if stats == nil {
|
|
return
|
|
}
|
|
updatedAt := parseStatsUpdatedAt(stats.StatsUpdatedAt)
|
|
stats.StatsStale = s.isAggregationStale(updatedAt, time.Now().UTC())
|
|
}
|
|
|
|
func (s *DashboardService) fetchAggregationUpdatedAt(ctx context.Context) time.Time {
|
|
if s.aggRepo == nil {
|
|
return time.Unix(0, 0).UTC()
|
|
}
|
|
updatedAt, err := s.aggRepo.GetAggregationWatermark(ctx)
|
|
if err != nil {
|
|
log.Printf("[Dashboard] 读取聚合水位失败: %v", err)
|
|
return time.Unix(0, 0).UTC()
|
|
}
|
|
if updatedAt.IsZero() {
|
|
return time.Unix(0, 0).UTC()
|
|
}
|
|
return updatedAt.UTC()
|
|
}
|
|
|
|
func (s *DashboardService) isAggregationStale(updatedAt, now time.Time) bool {
|
|
if !s.aggEnabled {
|
|
return true
|
|
}
|
|
epoch := time.Unix(0, 0).UTC()
|
|
if !updatedAt.After(epoch) {
|
|
return true
|
|
}
|
|
threshold := s.aggInterval + s.aggLookback
|
|
return now.Sub(updatedAt) > threshold
|
|
}
|
|
|
|
func parseStatsUpdatedAt(raw string) time.Time {
|
|
if raw == "" {
|
|
return time.Unix(0, 0).UTC()
|
|
}
|
|
parsed, err := time.Parse(time.RFC3339, raw)
|
|
if err != nil {
|
|
return time.Unix(0, 0).UTC()
|
|
}
|
|
return parsed.UTC()
|
|
}
|
|
|
|
func (s *DashboardService) GetAPIKeyUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]usagestats.APIKeyUsageTrendPoint, error) {
|
|
trend, err := s.usageRepo.GetAPIKeyUsageTrend(ctx, startTime, endTime, granularity, limit)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get api key usage trend: %w", err)
|
|
}
|
|
return trend, nil
|
|
}
|
|
|
|
func (s *DashboardService) GetUserUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]usagestats.UserUsageTrendPoint, error) {
|
|
trend, err := s.usageRepo.GetUserUsageTrend(ctx, startTime, endTime, granularity, limit)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get user usage trend: %w", err)
|
|
}
|
|
return trend, nil
|
|
}
|
|
|
|
func (s *DashboardService) GetBatchUserUsageStats(ctx context.Context, userIDs []int64) (map[int64]*usagestats.BatchUserUsageStats, error) {
|
|
stats, err := s.usageRepo.GetBatchUserUsageStats(ctx, userIDs)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get batch user usage stats: %w", err)
|
|
}
|
|
return stats, nil
|
|
}
|
|
|
|
func (s *DashboardService) GetBatchAPIKeyUsageStats(ctx context.Context, apiKeyIDs []int64) (map[int64]*usagestats.BatchAPIKeyUsageStats, error) {
|
|
stats, err := s.usageRepo.GetBatchAPIKeyUsageStats(ctx, apiKeyIDs)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get batch api key usage stats: %w", err)
|
|
}
|
|
return stats, nil
|
|
}
|