Filter builder

The Filter builder helps generating a filter, a.k.a a labels matcher expression.

Usage

package myDaC

import (
    promFilterBuilder "github.com/perses/perses/cue/dac-utils/prometheus/filter"
)

promFilterBuilder & {} // input parameters expected

Parameters

Parameter	Type	Mandatory/Optional	Default	Description
#input	[...varBuilder]	Mandatory		The list of variables builders from which to generate the filter.

Output

Field	Type	Description
filter	string	A labels matcher expression, that covers all the variables previously passed. E.g {namespace="$namespace",pod="$pod",container="$container"}

Example

package myDaC

import (
    promFilterBuilder "github.com/perses/perses/cue/dac-utils/prometheus/filter"
    textVarBuilder "github.com/perses/perses/cue/dac-utils/variable/text"
    promQLVarBuilder "github.com/perses/perses/cue/dac-utils/prometheus/variable/promql"
    labelValuesVarBuilder "github.com/perses/perses/cue/dac-utils/prometheus/variable/labelvalues"
)

{promFilterBuilder & {
    #input: [
        textVarBuilder & {
            #name:     "prometheus"
            #value:    "platform"
            #constant: true
        },
        labelValuesVarBuilder & {
            #name: "stack"
            #display: name: "PaaS"
            #metric:         "thanos_build_info"
            #label:          "stack"
            #datasourceName: "promDemo"
        },
        promQLVarBuilder & {
            #name:           "namespace"
            #metric:         "kube_namespace_labels"
            #allowMultiple:  true
            #datasourceName: "promDemo"
        }
    ]
}}.filter