mirror of
https://github.com/prometheus-operator/prometheus-operator.git
synced 2025-04-16 09:16:38 +00:00
66 lines
2 KiB
Go
66 lines
2 KiB
Go
// Copyright 2016 The prometheus-operator Authors
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//
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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 prometheus
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import (
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v1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
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"github.com/prometheus/client_golang/prometheus"
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"k8s.io/client-go/tools/cache"
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)
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var (
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descPrometheusSpecReplicas = prometheus.NewDesc(
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"prometheus_operator_spec_replicas",
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"Number of expected replicas for the object.",
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[]string{
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"namespace",
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"name",
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}, nil,
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)
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)
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type prometheusCollector struct {
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stores []cache.Store
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}
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func NewPrometheusCollector(s cache.Store) *prometheusCollector {
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return &prometheusCollector{stores: []cache.Store{s}}
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}
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func NewPrometheusCollectorForStores(s ...cache.Store) *prometheusCollector {
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return &prometheusCollector{stores: s}
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}
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// Describe implements the prometheus.Collector interface.
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func (c *prometheusCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- descPrometheusSpecReplicas
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}
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// Collect implements the prometheus.Collector interface.
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func (c *prometheusCollector) Collect(ch chan<- prometheus.Metric) {
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for _, s := range c.stores {
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for _, p := range s.List() {
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c.collectPrometheus(ch, p.(*v1.Prometheus))
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}
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}
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}
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func (c *prometheusCollector) collectPrometheus(ch chan<- prometheus.Metric, p *v1.Prometheus) {
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replicas := float64(minReplicas)
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if p.Spec.Replicas != nil {
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replicas = float64(*p.Spec.Replicas)
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}
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ch <- prometheus.MustNewConstMetric(descPrometheusSpecReplicas, prometheus.GaugeValue, replicas, p.Namespace, p.Name)
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}
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