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Loki: Introduce $__auto range variable for metric queries (#72690)

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* Loki: Add  interpolation to backend

* Loki: Replace default variable  with  in frontend

* Loki: Update docs in query builder fro __auto

* Loki: Update test for change default __auto

* Loki: Remove  and  from suggestions as  should be used

* Update docs

* Update pkg/tsdb/loki/parse_query.go

* Fix backend lint

* Fix lint and test

* Update

* Update docs/sources/datasources/loki/template-variables/index.md

Co-authored-by: lwandz13 <126723338+lwandz13@users.noreply.github.com>

* Update public/app/plugins/datasource/loki/querybuilder/operationUtils.ts

Co-authored-by: Matias Chomicki <matyax@gmail.com>

---------

Co-authored-by: lwandz13 <126723338+lwandz13@users.noreply.github.com>
Co-authored-by: Matias Chomicki <matyax@gmail.com>
This commit is contained in:
Ivana Huckova
2023-08-03 16:27:23 +02:00
committed by GitHub
co-authored by lwandz13 Matias Chomicki
parent b1fd399c10
commit 7bb0ff7055
16 changed files with 103 additions and 61 deletions
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pkg/tsdb/loki/parse_query.go
+14 -3
View File
@@ -10,6 +10,7 @@ import (
"github.com/grafana/grafana-plugin-sdk-go/backend"
"github.com/grafana/grafana/pkg/tsdb/intervalv2"
"github.com/grafana/grafana/pkg/tsdb/loki/kinds/dataquery"
)
const (
@@ -18,6 +19,7 @@ const (
varRange = "$__range"
varRangeS = "$__range_s"
varRangeMs = "$__range_ms"
varAuto = "$__auto"
)
const (
@@ -26,10 +28,12 @@ const (
varRangeAlt = "${__range}"
varRangeSAlt = "${__range_s}"
varRangeMsAlt = "${__range_ms}"
// $__auto is a new variable and we don't want to support this templating format
)
func interpolateVariables(expr string, interval time.Duration, timeRange time.Duration) string {
func interpolateVariables(expr string, interval time.Duration, timeRange time.Duration, queryType dataquery.LokiQueryType, step time.Duration) string {
intervalText := intervalv2.FormatDuration(interval)
stepText := intervalv2.FormatDuration(step)
intervalMsText := strconv.FormatInt(int64(interval/time.Millisecond), 10)
rangeMs := timeRange.Milliseconds()
@@ -42,6 +46,13 @@ func interpolateVariables(expr string, interval time.Duration, timeRange time.Du
expr = strings.ReplaceAll(expr, varRangeMs, rangeMsText)
expr = strings.ReplaceAll(expr, varRangeS, rangeSText)
expr = strings.ReplaceAll(expr, varRange, rangeSText+"s")
if queryType == dataquery.LokiQueryTypeInstant {
expr = strings.ReplaceAll(expr, varAuto, rangeSText+"s")
}
if queryType == dataquery.LokiQueryTypeRange {
expr = strings.ReplaceAll(expr, varAuto, stepText)
}
// this is duplicated code, hopefully this can be handled in a nicer way when
// https://github.com/grafana/grafana/issues/42928 is done.
@@ -131,13 +142,13 @@ func parseQuery(queryContext *backend.QueryDataRequest) ([]*lokiQuery, error) {
return nil, err
}
expr := interpolateVariables(model.Expr, interval, timeRange)
queryType, err := parseQueryType(model.QueryType)
if err != nil {
return nil, err
}
expr := interpolateVariables(model.Expr, interval, timeRange, queryType, step)
direction, err := parseDirection(model.Direction)
if err != nil {
return nil, err