func prepareInstantQuery(node Node, timestamp clientmodel.Timestamp, storage local.Storage, queryStats *stats.TimerGroup) (local.Preloader, error) { analyzeTimer := queryStats.GetTimer(stats.QueryAnalysisTime).Start() analyzer := NewQueryAnalyzer(storage) Walk(analyzer, node) analyzeTimer.Stop() // TODO: Preloading should time out after a given duration. preloadTimer := queryStats.GetTimer(stats.PreloadTime).Start() p := storage.NewPreloader() for fp, rangeDuration := range analyzer.FullRanges { if err := p.PreloadRange(fp, timestamp.Add(-rangeDuration), timestamp, *stalenessDelta); err != nil { p.Close() return nil, err } } for fp := range analyzer.IntervalRanges { if err := p.PreloadRange(fp, timestamp, timestamp, *stalenessDelta); err != nil { p.Close() return nil, err } } preloadTimer.Stop() ii := &iteratorInitializer{ storage: storage, } Walk(ii, node) return p, nil }
func prepareRangeQuery(node Node, start clientmodel.Timestamp, end clientmodel.Timestamp, interval time.Duration, storage local.Storage, queryStats *stats.TimerGroup) (local.Preloader, error) { analyzeTimer := queryStats.GetTimer(stats.QueryAnalysisTime).Start() analyzer := NewQueryAnalyzer(storage) Walk(analyzer, node) analyzeTimer.Stop() // TODO: Preloading should time out after a given duration. preloadTimer := queryStats.GetTimer(stats.PreloadTime).Start() p := storage.NewPreloader() for fp, rangeDuration := range analyzer.FullRanges { if err := p.PreloadRange(fp, start.Add(-rangeDuration), end, *stalenessDelta); err != nil { p.Close() return nil, err } /* if interval < rangeDuration { if err := p.GetMetricRange(fp, end, end.Sub(start)+rangeDuration); err != nil { p.Close() return nil, err } } else { if err := p.GetMetricRangeAtInterval(fp, start, end, interval, rangeDuration); err != nil { p.Close() return nil, err } } */ } for fp := range analyzer.IntervalRanges { if err := p.PreloadRange(fp, start, end, *stalenessDelta); err != nil { p.Close() return nil, err } } preloadTimer.Stop() ii := &iteratorInitializer{ storage: storage, } Walk(ii, node) return p, nil }