prometheus/model/labelpair.go

// Copyright 2013 Prometheus Team
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package model

import (
	"sort"
)

type LabelPair struct {
	Name  LabelName
	Value LabelValue
}

type LabelPairs []LabelPair

func (l LabelPairs) Len() int {
	return len(l)
}

func (l LabelPairs) Less(i, j int) (less bool) {
	less = sort.StringsAreSorted([]string{
		string(l[i].Name),
		string(l[j].Name),
	})
	if !less {
		return
	}

	less = sort.StringsAreSorted([]string{
		string(l[i].Value),
		string(l[j].Value),
	})

	return
}

func (l LabelPairs) Swap(i, j int) {
	l[i], l[j] = l[j], l[i]
}