prometheus

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// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package dns
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import (
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	"github.com/prometheus/client_golang/prometheus"
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	"github.com/prometheus/prometheus/discovery"
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)
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var _ discovery.DiscovererMetrics = (*dnsMetrics)(nil)
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type dnsMetrics struct {
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	refreshMetrics discovery.RefreshMetricsInstantiator
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	dnsSDLookupsCount        prometheus.Counter
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	dnsSDLookupFailuresCount prometheus.Counter
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	metricRegisterer discovery.MetricRegisterer
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}
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func newDiscovererMetrics(reg prometheus.Registerer, rmi discovery.RefreshMetricsInstantiator) discovery.DiscovererMetrics {
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	m := &dnsMetrics{
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		refreshMetrics: rmi,
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		dnsSDLookupsCount: prometheus.NewCounter(
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			prometheus.CounterOpts{
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				Namespace: namespace,
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				Name:      "sd_dns_lookups_total",
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				Help:      "The number of DNS-SD lookups.",
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			}),
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		dnsSDLookupFailuresCount: prometheus.NewCounter(
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			prometheus.CounterOpts{
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				Namespace: namespace,
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				Name:      "sd_dns_lookup_failures_total",
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				Help:      "The number of DNS-SD lookup failures.",
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			}),
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	}
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	m.metricRegisterer = discovery.NewMetricRegisterer(reg, []prometheus.Collector{
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		m.dnsSDLookupsCount,
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		m.dnsSDLookupFailuresCount,
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	})
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	return m
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}
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// Register implements discovery.DiscovererMetrics.
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func (m *dnsMetrics) Register() error {
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	return m.metricRegisterer.RegisterMetrics()
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}
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// Unregister implements discovery.DiscovererMetrics.
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func (m *dnsMetrics) Unregister() {
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	m.metricRegisterer.UnregisterMetrics()
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}
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