more logging

db/helpers.go

@@ -33,11 +33,15 @@ func TableRowCount(ctx context.Context, dbConn *sqlx.DB, table string) (int64, e
 	if err := ValidateTableName(table); err != nil {
 		return 0, err
 	}
+	start := time.Now()
+	slog.Debug("db row count start", "table", table)
 	var count int64
 	query := fmt.Sprintf(`SELECT COUNT(*) FROM %s`, table)
 	if err := getLog(ctx, dbConn, &count, query); err != nil {
+		slog.Debug("db row count failed", "table", table, "duration", time.Since(start), "error", err)
 		return 0, err
 	}
+	slog.Debug("db row count complete", "table", table, "rows", count, "duration", time.Since(start))
 	return count, nil
 }
 
@@ -422,10 +426,17 @@ func CheckpointSQLite(ctx context.Context, dbConn *sqlx.DB) error {
 	if ctx == nil {
 		ctx = context.Background()
 	}
+	start := time.Now()
+	slog.Debug("sqlite checkpoint start")
 	cctx, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
 	_, err := dbConn.ExecContext(cctx, `PRAGMA wal_checkpoint(TRUNCATE);`)
-	return err
+	if err != nil {
+		slog.Warn("sqlite checkpoint failed", "error", err, "duration", time.Since(start))
+		return err
+	}
+	slog.Debug("sqlite checkpoint complete", "duration", time.Since(start))
+	return nil
 }
 
 // EnsureVmHourlyStats creates the shared per-snapshot cache table used by Go aggregations.
@@ -1311,9 +1322,13 @@ func AnalyzeTableIfPostgres(ctx context.Context, dbConn *sqlx.DB, tableName stri
 	if driver != "pgx" && driver != "postgres" {
 		return
 	}
+	start := time.Now()
+	slog.Debug("db analyze start", "table", tableName)
 	if _, err := execLog(ctx, dbConn, fmt.Sprintf(`ANALYZE %s`, tableName)); err != nil {
 		slog.Warn("failed to ANALYZE table", "table", tableName, "error", err)
+		return
 	}
+	slog.Debug("db analyze complete", "table", tableName, "duration", time.Since(start))
 }
 
 // SetPostgresWorkMem sets a per-session work_mem for heavy aggregations; no-op for other drivers.