func queryToTable()

in analysis/app/trend.go [179:228]

• 45 lines of code
• 11 McCabe index (conditional complexity)

func queryToTable(q *storage.Query) (t *table.Table, resultCols []string) {
	var names []string
	labels := make(map[string][]string)
	results := make(map[string][]float64)
	i := 0
	for q.Next() {
		res := q.Result()
		// TODO(quentin): Handle multiple results with the same name but different NameLabels.
		names = append(names, res.NameLabels["name"])
		for k := range res.Labels {
			if labels[k] == nil {
				labels[k] = make([]string, i)
			}
		}
		for k := range labels {
			labels[k] = append(labels[k], res.Labels[k])
		}
		f := strings.Fields(res.Content)
		metrics := make(map[string]float64)
		for j := 2; j+2 <= len(f); j += 2 {
			val, err := strconv.ParseFloat(f[j], 64)
			if err != nil {
				continue
			}
			unit := f[j+1]
			if results[unit] == nil {
				results[unit] = make([]float64, i)
			}
			metrics[unit] = val
		}
		for k := range results {
			results[k] = append(results[k], metrics[k])
		}
		i++
	}

	tab := new(table.Builder).Add("name", names)

	for k, v := range labels {
		tab.Add(k, v)
	}
	for k, v := range results {
		tab.Add(k, v)
		resultCols = append(resultCols, k)
	}

	sort.Strings(resultCols)

	return tab.Done(), resultCols
}