VictoriaMetrics/app/vmselect/prometheus/query_range_response.qtpl
Aliaksandr Valialkin b8739bc00b
app/vmselect: return stats.seriesFetched as string instead of number
vmalert expects string value for stats.seriesFetched, so it is impossible
switching to number without breaking compatibility with old vmalert releases :(

It is still unclear why stats.seriesFetched has string type in the first place...
2023-11-01 17:49:59 +01:00

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{% import (
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/netstorage"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/promql"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/querytracer"
) %}
{% stripspace %}
QueryRangeResponse generates response for /api/v1/query_range.
See https://prometheus.io/docs/prometheus/latest/querying/api/#range-queries
{% func QueryRangeResponse(rs []netstorage.Result, qt *querytracer.Tracer, qtDone func(), qs *promql.QueryStats) %}
{
{% code
seriesCount := len(rs)
pointsCount := 0
%}
"status":"success",
"data":{
"resultType":"matrix",
"result":[
{% if len(rs) > 0 %}
{%= queryRangeLine(&rs[0]) %}
{% code pointsCount += len(rs[0].Values) %}
{% code rs = rs[1:] %}
{% for i := range rs %}
,{%= queryRangeLine(&rs[i]) %}
{% code pointsCount += len(rs[i].Values) %}
{% endfor %}
{% endif %}
]
},
"stats":{
{% code
// seriesFetched is string instead of int because of historical reasons.
// It cannot be converted to int without breaking backwards compatibility at vmalert :(
%}
"seriesFetched": "{%dl qs.SeriesFetched %}",
"executionTimeMsec": {%dl qs.ExecutionTimeMsec %}
}
{% code
qt.Printf("generate /api/v1/query_range response for series=%d, points=%d", seriesCount, pointsCount)
qtDone()
%}
{%= dumpQueryTrace(qt) %}
}
{% endfunc %}
{% func queryRangeLine(r *netstorage.Result) %}
{
"metric": {%= metricNameObject(&r.MetricName) %},
"values": {%= valuesWithTimestamps(r.Values, r.Timestamps) %}
}
{% endfunc %}
{% endstripspace %}