Prometheus Filter Builder

This libary helps generating a filter, a.k.a a labels matcher expression.

Usage#

package myDaC

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

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