60 lines
1.7 KiB
Go
60 lines
1.7 KiB
Go
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// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package prometheus
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// LabelMap defines the mapping from Prometheus label to a Metricbeat field
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type LabelMap interface {
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// GetField returns the resulting field name
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GetField() string
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// IsKey returns true if the label is a key label
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IsKey() bool
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}
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// Label maps a Prometheus label to a Metricbeat field
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func Label(field string) LabelMap {
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return &commonLabel{
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field: field,
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key: false,
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}
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}
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// KeyLabel maps a Prometheus label to a Metricbeat field. The label is flagged as key.
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// Metrics with the same tuple of key labels will be grouped in the same event.
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func KeyLabel(field string) LabelMap {
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return &commonLabel{
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field: field,
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key: true,
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}
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}
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type commonLabel struct {
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field string
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key bool
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}
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// GetField returns the resulting field name
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func (l *commonLabel) GetField() string {
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return l.field
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}
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// IsKey returns true if the label is a key label
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func (l *commonLabel) IsKey() bool {
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return l.key
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}
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