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Interpolate $__interval in backend for alerting with sql datasources (#13156)

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add support for interpolate $__interval and  $__interval_ms in sql datasources
This commit is contained in:
Sven Klemm
2018-09-13 16:51:00 +02:00
committed by Marcus Efraimsson
parent bae560717d
commit 0254a29e35
11 changed files with 218 additions and 63 deletions
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40
pkg/tsdb/postgres/postgres_test.go
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@ -43,6 +43,11 @@ func TestPostgres(t *testing.T) {
return x, nil
}
origInterpolate := tsdb.Interpolate
tsdb.Interpolate = func(query *tsdb.Query, timeRange *tsdb.TimeRange, sql string) (string, error) {
return sql, nil
}
endpoint, err := newPostgresQueryEndpoint(&models.DataSource{
JsonData: simplejson.New(),
SecureJsonData: securejsondata.SecureJsonData{},
@ -55,6 +60,7 @@ func TestPostgres(t *testing.T) {
Reset(func() {
sess.Close()
tsdb.NewXormEngine = origXormEngine
tsdb.Interpolate = origInterpolate
})
Convey("Given a table with different native data types", func() {
@ -222,6 +228,40 @@ func TestPostgres(t *testing.T) {
}
})
Convey("When doing a metric query using timeGroup and $__interval", func() {
mockInterpolate := tsdb.Interpolate
tsdb.Interpolate = origInterpolate
Reset(func() {
tsdb.Interpolate = mockInterpolate
})
Convey("Should replace $__interval", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
DataSource: &models.DataSource{},
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": "SELECT $__timeGroup(time, $__interval) AS time, avg(value) as value FROM metric GROUP BY 1 ORDER BY 1",
"format": "time_series",
}),
RefId: "A",
},
},
TimeRange: &tsdb.TimeRange{
From: fmt.Sprintf("%v", fromStart.Unix()*1000),
To: fmt.Sprintf("%v", fromStart.Add(30*time.Minute).Unix()*1000),
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(queryResult.Meta.Get("sql").MustString(), ShouldEqual, "SELECT floor(extract(epoch from time)/60)*60 AS time, avg(value) as value FROM metric GROUP BY 1 ORDER BY 1")
})
})
Convey("When doing a metric query using timeGroup with NULL fill enabled", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{