VictoriaMetrics/app/vmselect/graphite/render_response.qtpl

{% stripspace %}

{% import (
	"math"
	"sort"
) %}

RenderJSONResponse generates response for /render?format=json .
See https://graphite.readthedocs.io/en/stable/render_api.html#json
{% func RenderJSONResponse(nextSeries nextSeriesFunc, jsonp string) %}
	{% if jsonp != "" %}{%s= jsonp %}({% endif %}
	{% code ss, err := fetchAllSeries(nextSeries) %}
	{% if err != nil %}
		{
			"error": {%q= err.Error() %}
		}
		{% return %}
	{% endif %}
	{% code sort.Slice(ss, func(i, j int) bool { return ss[i].Name < ss[j].Name }) %}
	[
		{% for i, s := range ss %}
			{%= renderSeriesJSON(s) %}
			{% if i+1 < len(ss) %},{% endif %}
		{% endfor %}
	]
	{% if jsonp != "" %}){% endif %}
{% endfunc %}

{% func renderSeriesJSON(s *series) %}
	{
		"target": {%q= s.Name %},
		"tags":{
			{% code
				tagKeys := make([]string, 0, len(s.Tags))
				for k := range s.Tags {
					tagKeys = append(tagKeys, k)
				}
				sort.Strings(tagKeys)
			%}
			{% for i, k := range tagKeys %}
				{% code v := s.Tags[k] %}
				{%q= k %}: {%q= v %}
				{% if i+1 < len(tagKeys) %},{% endif %}
			{% endfor %}
		},
		"datapoints":[
			{% code timestamps := s.Timestamps %}
			{% for i, v := range s.Values %}
				[
					{% if math.IsNaN(v) %}null{% else %}{%f= v %}{% endif %},
					{%dl= timestamps[i]/1e3 %}
				]
				{% if i+1 < len(timestamps) %},{% endif %}
			{% endfor %}
		]
	}
{% endfunc %}

{% endstripspace %}