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315
internal/service/dashboard_query_service.go
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315
internal/service/dashboard_query_service.go
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// Filename: internal/service/dashboard_query_service.go
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package service
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import (
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"fmt"
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"gemini-balancer/internal/models"
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"gemini-balancer/internal/store"
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"gemini-balancer/internal/syncer"
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"strconv"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/sirupsen/logrus"
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"gorm.io/gorm"
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)
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const overviewCacheChannel = "syncer:cache:dashboard_overview"
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// DashboardQueryService 负责所有面向前端的仪表盘数据查询。
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type DashboardQueryService struct {
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db *gorm.DB
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store store.Store
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overviewSyncer *syncer.CacheSyncer[*models.DashboardStatsResponse]
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logger *logrus.Entry
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stopChan chan struct{}
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}
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func NewDashboardQueryService(db *gorm.DB, s store.Store, logger *logrus.Logger) (*DashboardQueryService, error) {
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qs := &DashboardQueryService{
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db: db,
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store: s,
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logger: logger.WithField("component", "DashboardQueryService"),
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stopChan: make(chan struct{}),
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}
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loader := qs.loadOverviewData
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overviewSyncer, err := syncer.NewCacheSyncer(loader, s, overviewCacheChannel)
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if err != nil {
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return nil, fmt.Errorf("failed to create overview cache syncer: %w", err)
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}
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qs.overviewSyncer = overviewSyncer
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return qs, nil
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}
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func (s *DashboardQueryService) Start() {
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go s.eventListener()
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s.logger.Info("DashboardQueryService started and listening for invalidation events.")
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}
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func (s *DashboardQueryService) Stop() {
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close(s.stopChan)
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s.logger.Info("DashboardQueryService and its CacheSyncer have been stopped.")
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}
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func (s *DashboardQueryService) GetGroupStats(groupID uint) (map[string]any, error) {
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statsKey := fmt.Sprintf("stats:group:%d", groupID)
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keyStatsMap, err := s.store.HGetAll(statsKey)
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if err != nil {
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s.logger.WithError(err).Errorf("Failed to get key stats from cache for group %d", groupID)
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return nil, fmt.Errorf("failed to get key stats from cache: %w", err)
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}
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keyStats := make(map[string]int64)
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for k, v := range keyStatsMap {
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val, _ := strconv.ParseInt(v, 10, 64)
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keyStats[k] = val
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}
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now := time.Now()
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oneHourAgo := now.Add(-1 * time.Hour)
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twentyFourHoursAgo := now.Add(-24 * time.Hour)
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type requestStatsResult struct {
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TotalRequests int64
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SuccessRequests int64
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}
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var last1Hour, last24Hours requestStatsResult
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s.db.Model(&models.StatsHourly{}).
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Select("SUM(request_count) as total_requests, SUM(success_count) as success_requests").
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Where("group_id = ? AND time >= ?", groupID, oneHourAgo).
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Scan(&last1Hour)
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s.db.Model(&models.StatsHourly{}).
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Select("SUM(request_count) as total_requests, SUM(success_count) as success_requests").
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Where("group_id = ? AND time >= ?", groupID, twentyFourHoursAgo).
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Scan(&last24Hours)
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failureRate1h := 0.0
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if last1Hour.TotalRequests > 0 {
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failureRate1h = float64(last1Hour.TotalRequests-last1Hour.SuccessRequests) / float64(last1Hour.TotalRequests) * 100
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}
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failureRate24h := 0.0
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if last24Hours.TotalRequests > 0 {
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failureRate24h = float64(last24Hours.TotalRequests-last24Hours.SuccessRequests) / float64(last24Hours.TotalRequests) * 100
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}
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last1HourStats := map[string]any{
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"total_requests": last1Hour.TotalRequests,
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"success_requests": last1Hour.SuccessRequests,
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"failure_rate": failureRate1h,
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}
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last24HoursStats := map[string]any{
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"total_requests": last24Hours.TotalRequests,
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"success_requests": last24Hours.SuccessRequests,
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"failure_rate": failureRate24h,
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}
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result := map[string]any{
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"key_stats": keyStats,
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"last_1_hour": last1HourStats,
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"last_24_hours": last24HoursStats,
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}
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return result, nil
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}
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func (s *DashboardQueryService) eventListener() {
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keyStatusSub, _ := s.store.Subscribe(models.TopicKeyStatusChanged)
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upstreamStatusSub, _ := s.store.Subscribe(models.TopicUpstreamHealthChanged)
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defer keyStatusSub.Close()
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defer upstreamStatusSub.Close()
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for {
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select {
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case <-keyStatusSub.Channel():
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s.logger.Info("Received key status changed event, invalidating overview cache...")
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_ = s.InvalidateOverviewCache()
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case <-upstreamStatusSub.Channel():
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s.logger.Info("Received upstream status changed event, invalidating overview cache...")
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_ = s.InvalidateOverviewCache()
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case <-s.stopChan:
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s.logger.Info("Stopping dashboard event listener.")
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return
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}
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}
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}
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// GetDashboardOverviewData 从 Syncer 缓存中高速获取仪表盘概览数据。
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func (s *DashboardQueryService) GetDashboardOverviewData() (*models.DashboardStatsResponse, error) {
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cachedDataPtr := s.overviewSyncer.Get()
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if cachedDataPtr == nil {
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return &models.DashboardStatsResponse{}, fmt.Errorf("overview cache is not available or still syncing")
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}
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return cachedDataPtr, nil
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}
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func (s *DashboardQueryService) InvalidateOverviewCache() error {
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return s.overviewSyncer.Invalidate()
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}
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// QueryHistoricalChart 查询历史图表数据。
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func (s *DashboardQueryService) QueryHistoricalChart(groupID *uint) (*models.ChartData, error) {
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type ChartPoint struct {
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TimeLabel string `gorm:"column:time_label"`
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ModelName string `gorm:"column:model_name"`
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TotalRequests int64 `gorm:"column:total_requests"`
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}
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sevenDaysAgo := time.Now().Add(-24 * 7 * time.Hour).Truncate(time.Hour)
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sqlFormat, goFormat := s.buildTimeFormatSelectClause()
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selectClause := fmt.Sprintf("%s as time_label, model_name, SUM(request_count) as total_requests", sqlFormat)
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query := s.db.Model(&models.StatsHourly{}).Select(selectClause).Where("time >= ?", sevenDaysAgo).Group("time_label, model_name").Order("time_label ASC")
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if groupID != nil && *groupID > 0 {
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query = query.Where("group_id = ?", *groupID)
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}
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var points []ChartPoint
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if err := query.Find(&points).Error; err != nil {
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return nil, err
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}
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datasets := make(map[string]map[string]int64)
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for _, p := range points {
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if _, ok := datasets[p.ModelName]; !ok {
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datasets[p.ModelName] = make(map[string]int64)
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}
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datasets[p.ModelName][p.TimeLabel] = p.TotalRequests
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}
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var labels []string
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for t := sevenDaysAgo; t.Before(time.Now()); t = t.Add(time.Hour) {
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labels = append(labels, t.Format(goFormat))
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}
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chartData := &models.ChartData{Labels: labels, Datasets: make([]models.ChartDataset, 0)}
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colorPalette := []string{"#FF6384", "#36A2EB", "#FFCE56", "#4BC0C0", "#9966FF", "#FF9F40"}
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colorIndex := 0
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for modelName, dataPoints := range datasets {
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dataArray := make([]int64, len(labels))
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for i, label := range labels {
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dataArray[i] = dataPoints[label]
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}
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chartData.Datasets = append(chartData.Datasets, models.ChartDataset{
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Label: modelName,
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Data: dataArray,
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Color: colorPalette[colorIndex%len(colorPalette)],
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})
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colorIndex++
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}
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return chartData, nil
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}
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func (s *DashboardQueryService) loadOverviewData() (*models.DashboardStatsResponse, error) {
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s.logger.Info("[CacheSyncer] Starting to load overview data from database...")
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startTime := time.Now()
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resp := &models.DashboardStatsResponse{
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KeyStatusCount: make(map[models.APIKeyStatus]int64),
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MasterStatusCount: make(map[models.MasterAPIKeyStatus]int64),
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KeyCount: models.StatCard{}, // 确保KeyCount是一个空的结构体，而不是nil
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RequestCount24h: models.StatCard{}, // 同上
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TokenCount: make(map[string]any),
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UpstreamHealthStatus: make(map[string]string),
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RPM: models.StatCard{},
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RequestCounts: make(map[string]int64),
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}
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// --- 1. Aggregate Operational Status from Mappings ---
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type MappingStatusResult struct {
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Status models.APIKeyStatus
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Count int64
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}
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var mappingStatusResults []MappingStatusResult
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if err := s.db.Model(&models.GroupAPIKeyMapping{}).Select("status, count(*) as count").Group("status").Find(&mappingStatusResults).Error; err != nil {
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return nil, fmt.Errorf("failed to query mapping status stats: %w", err)
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}
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for _, res := range mappingStatusResults {
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resp.KeyStatusCount[res.Status] = res.Count
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}
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// --- 2. Aggregate Master Status from APIKeys ---
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type MasterStatusResult struct {
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Status models.MasterAPIKeyStatus
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Count int64
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}
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var masterStatusResults []MasterStatusResult
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if err := s.db.Model(&models.APIKey{}).Select("master_status as status, count(*) as count").Group("master_status").Find(&masterStatusResults).Error; err != nil {
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return nil, fmt.Errorf("failed to query master status stats: %w", err)
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}
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var totalKeys, invalidKeys int64
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for _, res := range masterStatusResults {
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resp.MasterStatusCount[res.Status] = res.Count
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totalKeys += res.Count
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if res.Status != models.MasterStatusActive {
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invalidKeys += res.Count
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}
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}
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resp.KeyCount = models.StatCard{Value: float64(totalKeys), SubValue: invalidKeys, SubValueTip: "非活跃身份密钥数"}
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now := time.Now()
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// 1. RPM (1分钟), RPH (1小时), RPD (今日): 从“瞬时记忆”(request_logs)中精确查询
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var count1m, count1h, count1d int64
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// RPM: 从此刻倒推1分钟
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s.db.Model(&models.RequestLog{}).Where("request_time >= ?", now.Add(-1*time.Minute)).Count(&count1m)
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// RPH: 从此刻倒推1小时
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s.db.Model(&models.RequestLog{}).Where("request_time >= ?", now.Add(-1*time.Hour)).Count(&count1h)
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// RPD: 从今天零点 (UTC) 到此刻
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year, month, day := now.UTC().Date()
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startOfDay := time.Date(year, month, day, 0, 0, 0, 0, time.UTC)
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s.db.Model(&models.RequestLog{}).Where("request_time >= ?", startOfDay).Count(&count1d)
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// 2. RP30D (30天): 从“长期记忆”(stats_hourly)中高效查询，以保证性能
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var count30d int64
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s.db.Model(&models.StatsHourly{}).Where("time >= ?", now.AddDate(0, 0, -30)).Select("COALESCE(SUM(request_count), 0)").Scan(&count30d)
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resp.RequestCounts["1m"] = count1m
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resp.RequestCounts["1h"] = count1h
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resp.RequestCounts["1d"] = count1d
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resp.RequestCounts["30d"] = count30d
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var upstreams []*models.UpstreamEndpoint
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if err := s.db.Find(&upstreams).Error; err != nil {
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s.logger.WithError(err).Warn("Failed to load upstream statuses for dashboard.")
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} else {
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for _, u := range upstreams {
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resp.UpstreamHealthStatus[u.URL] = u.Status
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}
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}
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duration := time.Since(startTime)
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s.logger.Infof("[CacheSyncer] Successfully finished loading overview data in %s.", duration)
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return resp, nil
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}
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func (s *DashboardQueryService) GetRequestStatsForPeriod(period string) (gin.H, error) {
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var startTime time.Time
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now := time.Now()
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switch period {
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case "1m":
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startTime = now.Add(-1 * time.Minute)
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case "1h":
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startTime = now.Add(-1 * time.Hour)
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case "1d":
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year, month, day := now.UTC().Date()
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startTime = time.Date(year, month, day, 0, 0, 0, 0, time.UTC)
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default:
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return nil, fmt.Errorf("invalid period specified: %s", period)
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}
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var result struct {
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Total int64
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Success int64
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}
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err := s.db.Model(&models.RequestLog{}).
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Select("count(*) as total, sum(case when is_success = true then 1 else 0 end) as success").
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Where("request_time >= ?", startTime).
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Scan(&result).Error
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if err != nil {
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return nil, err
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}
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return gin.H{
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"total": result.Total,
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"success": result.Success,
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"failure": result.Total - result.Success,
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}, nil
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}
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func (s *DashboardQueryService) buildTimeFormatSelectClause() (string, string) {
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dialect := s.db.Dialector.Name()
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switch dialect {
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case "mysql":
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return "DATE_FORMAT(time, '%Y-%m-%d %H:00:00')", "2006-01-02 15:00:00"
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case "sqlite":
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return "strftime('%Y-%m-%d %H:00:00', time)", "2006-01-02 15:00:00"
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default:
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return "strftime('%Y-%m-%d %H:00:00', time)", "2006-01-02 15:00:00"
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}
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}
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