PromQL Variable Builder

Constructor

import "github.com/perses/perses/go-sdk/prometheus/promql"

var options []promql.Option
promql.PrometheusPromQL("group by (namespace) (kube_namespace_labels{}", options...)

Need to provide the name of the variable and a list of options.

Default options

• Expr(): with the expr provided in the constructor.

Available options

Expr

import "github.com/perses/perses/go-sdk/prometheus/promql" 

promql.Expr("group by (namespace) (kube_namespace_labels{}")

Define the promQL metadata name and the display name.

LabelName

import "github.com/perses/perses/go-sdk/prometheus/promql"

promql.LabelName("my_super_label_name")

Define a label name that can filter the result of the expression.

Datasource

import "github.com/perses/perses/go-sdk/prometheus/promql"

promql.Datasource("datasourceName")

Define the datasource where the expression will be executed.

Example

package main

import (
    "github.com/perses/perses/go-sdk/dashboard"
    "github.com/perses/perses/go-sdk/prometheus/variable/promql"
    listvariable "github.com/perses/perses/go-sdk/variable/list-variable"
)

func main() {
    dashboard.New("Example Dashboard",
        dashboard.AddVariable("namespace", listvariable.List(
            promql.PrometheusPromQL("group by (namespace) (kube_namespace_labels{stack=\"$stack\",prometheus=\"$prometheus\",prometheus_namespace=\"$prometheus_namespace\"})", 
                promql.LabelName("namespace"), 
                promql.Datasource("promDemo"), 
            ),
            listvariable.AllowMultiple(true),
        )),
    )
}