func GetTestMetrics(c *middleware.Context) { from := c.QueryInt64("from") to := c.QueryInt64("to") maxDataPoints := c.QueryInt64("maxDataPoints") stepInSeconds := (to - from) / maxDataPoints result := dtos.MetricQueryResultDto{} result.Data = make([]dtos.MetricQueryResultDataDto, 1) for seriesIndex := range result.Data { points := make([][2]float64, maxDataPoints) walker := rand.Float64() * 100 time := from for i := range points { points[i][0] = walker points[i][1] = float64(time) walker += rand.Float64() - 0.5 time += stepInSeconds } result.Data[seriesIndex].Target = "test-series-" + strconv.Itoa(seriesIndex) result.Data[seriesIndex].DataPoints = points } c.JSON(200, &result) }