feat(performance): add recent success rates to model summary and enhance metrics retrieval

model/perf_metric.go

@@ -68,6 +68,16 @@ type PerfMetricSummary struct {
 	GenerationMs   int64  `json:"generation_ms"`
 }
 
+type PerfMetricSummaryBucket struct {
+	ModelName      string `json:"model_name"`
+	BucketTs       int64  `json:"bucket_ts"`
+	RequestCount   int64  `json:"request_count"`
+	SuccessCount   int64  `json:"success_count"`
+	TotalLatencyMs int64  `json:"total_latency_ms"`
+	OutputTokens   int64  `json:"output_tokens"`
+	GenerationMs   int64  `json:"generation_ms"`
+}
+
 func GetPerfMetricsSummaryAll(startTs int64, endTs int64, groups []string) ([]PerfMetricSummary, error) {
 	var summaries []PerfMetricSummary
 	query := DB.Model(&PerfMetric{}).
@@ -86,6 +96,25 @@ func GetPerfMetricsSummaryAll(startTs int64, endTs int64, groups []string) ([]Pe
 	return summaries, err
 }
 
+func GetPerfMetricsSummaryBucketsAll(startTs int64, endTs int64, groups []string) ([]PerfMetricSummaryBucket, error) {
+	var summaries []PerfMetricSummaryBucket
+	query := DB.Model(&PerfMetric{}).
+		Select("model_name, bucket_ts, SUM(request_count) as request_count, SUM(success_count) as success_count, SUM(total_latency_ms) as total_latency_ms, SUM(output_tokens) as output_tokens, SUM(generation_ms) as generation_ms").
+		Where("bucket_ts >= ? AND bucket_ts <= ?", startTs, endTs)
+	if groups != nil {
+		if len(groups) == 0 {
+			return summaries, nil
+		}
+		query = query.Where(commonGroupCol+" IN ?", groups)
+	}
+	err := query.
+		Group("model_name, bucket_ts").
+		Having("SUM(request_count) > 0").
+		Order("bucket_ts ASC").
+		Find(&summaries).Error
+	return summaries, err
+}
+
 func DeletePerfMetricsBefore(cutoffTs int64) error {
 	if cutoffTs <= 0 {
 		return nil