140 lines
4.5 KiB
Go
140 lines
4.5 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package collectors
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import (
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"github.com/golang/glog"
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"github.com/prometheus/client_golang/prometheus"
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"golang.org/x/net/context"
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"k8s.io/api/core/v1"
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"k8s.io/client-go/informers"
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"k8s.io/client-go/tools/cache"
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"k8s.io/kube-state-metrics/pkg/options"
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)
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var (
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descLimitRangeLabelsDefaultLabels = []string{"limitrange", "namespace"}
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descLimitRange = prometheus.NewDesc(
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"kube_limitrange",
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"Information about limit range.",
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append(descLimitRangeLabelsDefaultLabels, "resource", "type", "constraint"),
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nil,
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)
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descLimitRangeCreated = prometheus.NewDesc(
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"kube_limitrange_created",
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"Unix creation timestamp",
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descLimitRangeLabelsDefaultLabels,
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nil,
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)
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)
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type LimitRangeLister func() (v1.LimitRangeList, error)
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func (l LimitRangeLister) List() (v1.LimitRangeList, error) {
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return l()
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}
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func RegisterLimitRangeCollector(registry prometheus.Registerer, informerFactories []informers.SharedInformerFactory, opts *options.Options) {
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infs := SharedInformerList{}
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for _, f := range informerFactories {
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infs = append(infs, f.Core().V1().LimitRanges().Informer().(cache.SharedInformer))
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}
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limitRangeLister := LimitRangeLister(func() (ranges v1.LimitRangeList, err error) {
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for _, rqinf := range infs {
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for _, rq := range rqinf.GetStore().List() {
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ranges.Items = append(ranges.Items, *(rq.(*v1.LimitRange)))
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}
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}
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return ranges, nil
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})
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registry.MustRegister(&limitRangeCollector{store: limitRangeLister, opts: opts})
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infs.Run(context.Background().Done())
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}
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type limitRangeStore interface {
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List() (v1.LimitRangeList, error)
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}
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// limitRangeCollector collects metrics about all limit ranges in the cluster.
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type limitRangeCollector struct {
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store limitRangeStore
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opts *options.Options
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}
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// Describe implements the prometheus.Collector interface.
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func (lrc *limitRangeCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- descLimitRange
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ch <- descLimitRangeCreated
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}
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// Collect implements the prometheus.Collector interface.
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func (lrc *limitRangeCollector) Collect(ch chan<- prometheus.Metric) {
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limitRangeCollector, err := lrc.store.List()
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if err != nil {
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ScrapeErrorTotalMetric.With(prometheus.Labels{"resource": "limitrange"}).Inc()
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glog.Errorf("listing limit ranges failed: %s", err)
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return
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}
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ScrapeErrorTotalMetric.With(prometheus.Labels{"resource": "limitrange"}).Add(0)
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ResourcesPerScrapeMetric.With(prometheus.Labels{"resource": "limitrange"}).Observe(float64(len(limitRangeCollector.Items)))
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for _, rq := range limitRangeCollector.Items {
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lrc.collectLimitRange(ch, rq)
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}
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glog.V(4).Infof("collected %d limitranges", len(limitRangeCollector.Items))
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}
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func (lrc *limitRangeCollector) collectLimitRange(ch chan<- prometheus.Metric, rq v1.LimitRange) {
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addGauge := func(desc *prometheus.Desc, v float64, lv ...string) {
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lv = append([]string{rq.Name, rq.Namespace}, lv...)
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ch <- prometheus.MustNewConstMetric(desc, prometheus.GaugeValue, v, lv...)
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}
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if !rq.CreationTimestamp.IsZero() {
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addGauge(descLimitRangeCreated, float64(rq.CreationTimestamp.Unix()))
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}
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rawLimitRanges := rq.Spec.Limits
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for _, rawLimitRange := range rawLimitRanges {
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for resource, min := range rawLimitRange.Min {
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addGauge(descLimitRange, float64(min.MilliValue())/1000, string(resource), string(rawLimitRange.Type), "min")
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}
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for resource, max := range rawLimitRange.Max {
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addGauge(descLimitRange, float64(max.MilliValue())/1000, string(resource), string(rawLimitRange.Type), "max")
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}
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for resource, df := range rawLimitRange.Default {
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addGauge(descLimitRange, float64(df.MilliValue())/1000, string(resource), string(rawLimitRange.Type), "default")
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}
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for resource, dfR := range rawLimitRange.DefaultRequest {
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addGauge(descLimitRange, float64(dfR.MilliValue())/1000, string(resource), string(rawLimitRange.Type), "defaultRequest")
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}
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for resource, mLR := range rawLimitRange.MaxLimitRequestRatio {
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addGauge(descLimitRange, float64(mLR.MilliValue())/1000, string(resource), string(rawLimitRange.Type), "maxLimitRequestRatio")
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}
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}
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}
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