Remove GenericController and add tests
This commit is contained in:
Manuel de Brito Fontes
parent
1701bfc334
commit
86f39d9deb
39 changed files with 1131 additions and 1325 deletions
151
pkg/ingress/controller/metric/collector/nginx.go
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151
pkg/ingress/controller/metric/collector/nginx.go
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@ -0,0 +1,151 @@
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/*
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Copyright 2017 The Kubernetes 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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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 collector
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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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)
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type (
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nginxStatusCollector struct {
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scrapeChan chan scrapeRequest
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ngxHealthPort int
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ngxVtsPath string
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data *nginxStatusData
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watchNamespace string
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ingressClass string
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}
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nginxStatusData struct {
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active *prometheus.Desc
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accepted *prometheus.Desc
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handled *prometheus.Desc
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requests *prometheus.Desc
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reading *prometheus.Desc
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writing *prometheus.Desc
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waiting *prometheus.Desc
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}
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)
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// NewNginxStatus returns a new prometheus collector the default nginx status module
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func NewNginxStatus(watchNamespace, ingressClass string, ngxHealthPort int, ngxVtsPath string) Stopable {
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p := nginxStatusCollector{
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scrapeChan: make(chan scrapeRequest),
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ngxHealthPort: ngxHealthPort,
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ngxVtsPath: ngxVtsPath,
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watchNamespace: watchNamespace,
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ingressClass: ingressClass,
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}
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p.data = &nginxStatusData{
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active: prometheus.NewDesc(
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prometheus.BuildFQName(ns, "", "active_connections"),
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"total number of active connections",
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[]string{"ingress_class", "namespace"}, nil),
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accepted: prometheus.NewDesc(
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prometheus.BuildFQName(ns, "", "accepted_connections"),
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"total number of accepted client connections",
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[]string{"ingress_class", "namespace"}, nil),
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handled: prometheus.NewDesc(
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prometheus.BuildFQName(ns, "", "handled_connections"),
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"total number of handled connections",
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[]string{"ingress_class", "namespace"}, nil),
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requests: prometheus.NewDesc(
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prometheus.BuildFQName(ns, "", "total_requests"),
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"total number of client requests",
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[]string{"ingress_class", "namespace"}, nil),
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reading: prometheus.NewDesc(
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prometheus.BuildFQName(ns, "", "current_reading_connections"),
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"current number of connections where nginx is reading the request header",
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[]string{"ingress_class", "namespace"}, nil),
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writing: prometheus.NewDesc(
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prometheus.BuildFQName(ns, "", "current_writing_connections"),
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"current number of connections where nginx is writing the response back to the client",
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[]string{"ingress_class", "namespace"}, nil),
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waiting: prometheus.NewDesc(
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prometheus.BuildFQName(ns, "", "current_waiting_connections"),
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"current number of idle client connections waiting for a request",
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[]string{"ingress_class", "namespace"}, nil),
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}
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go p.start()
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return p
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}
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// Describe implements prometheus.Collector.
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func (p nginxStatusCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- p.data.active
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ch <- p.data.accepted
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ch <- p.data.handled
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ch <- p.data.requests
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ch <- p.data.reading
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ch <- p.data.writing
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ch <- p.data.waiting
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}
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// Collect implements prometheus.Collector.
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func (p nginxStatusCollector) Collect(ch chan<- prometheus.Metric) {
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req := scrapeRequest{results: ch, done: make(chan struct{})}
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p.scrapeChan <- req
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<-req.done
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}
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func (p nginxStatusCollector) start() {
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for req := range p.scrapeChan {
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ch := req.results
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p.scrape(ch)
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req.done <- struct{}{}
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}
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}
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func (p nginxStatusCollector) Stop() {
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close(p.scrapeChan)
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}
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// nginxStatusCollector scrape the nginx status
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func (p nginxStatusCollector) scrape(ch chan<- prometheus.Metric) {
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s, err := getNginxStatus(p.ngxHealthPort, p.ngxVtsPath)
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if err != nil {
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glog.Warningf("unexpected error obtaining nginx status info: %v", err)
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return
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}
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ch <- prometheus.MustNewConstMetric(p.data.active,
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prometheus.GaugeValue, float64(s.Active), p.ingressClass, p.watchNamespace)
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ch <- prometheus.MustNewConstMetric(p.data.accepted,
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prometheus.GaugeValue, float64(s.Accepted), p.ingressClass, p.watchNamespace)
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ch <- prometheus.MustNewConstMetric(p.data.handled,
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prometheus.GaugeValue, float64(s.Handled), p.ingressClass, p.watchNamespace)
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ch <- prometheus.MustNewConstMetric(p.data.requests,
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prometheus.GaugeValue, float64(s.Requests), p.ingressClass, p.watchNamespace)
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ch <- prometheus.MustNewConstMetric(p.data.reading,
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prometheus.GaugeValue, float64(s.Reading), p.ingressClass, p.watchNamespace)
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ch <- prometheus.MustNewConstMetric(p.data.writing,
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prometheus.GaugeValue, float64(s.Writing), p.ingressClass, p.watchNamespace)
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ch <- prometheus.MustNewConstMetric(p.data.waiting,
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prometheus.GaugeValue, float64(s.Waiting), p.ingressClass, p.watchNamespace)
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}
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174
pkg/ingress/controller/metric/collector/process.go
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174
pkg/ingress/controller/metric/collector/process.go
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@ -0,0 +1,174 @@
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/*
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Copyright 2017 The Kubernetes 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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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 collector
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import (
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"path/filepath"
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"github.com/golang/glog"
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common "github.com/ncabatoff/process-exporter"
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"github.com/ncabatoff/process-exporter/proc"
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"github.com/prometheus/client_golang/prometheus"
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)
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// BinaryNameMatcher ...
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type BinaryNameMatcher struct {
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Name string
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Binary string
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}
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// MatchAndName returns false if the match failed, otherwise
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// true and the resulting name.
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func (em BinaryNameMatcher) MatchAndName(nacl common.NameAndCmdline) (bool, string) {
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if len(nacl.Cmdline) == 0 {
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return false, ""
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}
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cmd := filepath.Base(em.Binary)
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return em.Name == cmd, ""
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}
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type namedProcessData struct {
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numProcs *prometheus.Desc
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cpuSecs *prometheus.Desc
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readBytes *prometheus.Desc
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writeBytes *prometheus.Desc
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memResidentbytes *prometheus.Desc
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memVirtualbytes *prometheus.Desc
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startTime *prometheus.Desc
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}
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type namedProcess struct {
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*proc.Grouper
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scrapeChan chan scrapeRequest
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fs *proc.FS
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data namedProcessData
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}
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// NewNamedProcess returns a new prometheus collector for the nginx process
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func NewNamedProcess(children bool, mn common.MatchNamer) (prometheus.Collector, error) {
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fs, err := proc.NewFS("/proc")
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if err != nil {
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return nil, err
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}
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p := namedProcess{
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scrapeChan: make(chan scrapeRequest),
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Grouper: proc.NewGrouper(children, mn),
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fs: fs,
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}
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_, err = p.Update(p.fs.AllProcs())
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if err != nil {
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return nil, err
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}
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p.data = namedProcessData{
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numProcs: prometheus.NewDesc(
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"num_procs",
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"number of processes",
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nil, nil),
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cpuSecs: prometheus.NewDesc(
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"cpu_seconds_total",
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"Cpu usage in seconds",
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nil, nil),
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readBytes: prometheus.NewDesc(
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"read_bytes_total",
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"number of bytes read",
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nil, nil),
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writeBytes: prometheus.NewDesc(
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"write_bytes_total",
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"number of bytes written",
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nil, nil),
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memResidentbytes: prometheus.NewDesc(
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"resident_memory_bytes",
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"number of bytes of memory in use",
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nil, nil),
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memVirtualbytes: prometheus.NewDesc(
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"virtual_memory_bytes",
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"number of bytes of memory in use",
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nil, nil),
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startTime: prometheus.NewDesc(
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"oldest_start_time_seconds",
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"start time in seconds since 1970/01/01",
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nil, nil),
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}
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go p.start()
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return p, nil
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}
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// Describe implements prometheus.Collector.
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func (p namedProcess) Describe(ch chan<- *prometheus.Desc) {
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ch <- p.data.cpuSecs
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ch <- p.data.numProcs
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ch <- p.data.readBytes
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ch <- p.data.writeBytes
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ch <- p.data.memResidentbytes
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ch <- p.data.memVirtualbytes
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ch <- p.data.startTime
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}
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// Collect implements prometheus.Collector.
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func (p namedProcess) Collect(ch chan<- prometheus.Metric) {
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req := scrapeRequest{results: ch, done: make(chan struct{})}
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p.scrapeChan <- req
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<-req.done
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}
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func (p namedProcess) start() {
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for req := range p.scrapeChan {
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ch := req.results
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p.scrape(ch)
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req.done <- struct{}{}
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}
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}
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func (p namedProcess) Stop() {
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close(p.scrapeChan)
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}
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func (p namedProcess) scrape(ch chan<- prometheus.Metric) {
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_, err := p.Update(p.fs.AllProcs())
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if err != nil {
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glog.Warningf("unexpected error obtaining nginx process info: %v", err)
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return
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}
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for _, gcounts := range p.Groups() {
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ch <- prometheus.MustNewConstMetric(p.data.numProcs,
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prometheus.GaugeValue, float64(gcounts.Procs))
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ch <- prometheus.MustNewConstMetric(p.data.memResidentbytes,
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prometheus.GaugeValue, float64(gcounts.Memresident))
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ch <- prometheus.MustNewConstMetric(p.data.memVirtualbytes,
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prometheus.GaugeValue, float64(gcounts.Memvirtual))
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ch <- prometheus.MustNewConstMetric(p.data.startTime,
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prometheus.GaugeValue, float64(gcounts.OldestStartTime.Unix()))
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ch <- prometheus.MustNewConstMetric(p.data.cpuSecs,
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prometheus.CounterValue, gcounts.Cpu)
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ch <- prometheus.MustNewConstMetric(p.data.readBytes,
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prometheus.CounterValue, float64(gcounts.ReadBytes))
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ch <- prometheus.MustNewConstMetric(p.data.writeBytes,
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prometheus.CounterValue, float64(gcounts.WriteBytes))
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}
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}
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30
pkg/ingress/controller/metric/collector/scrape.go
Normal file
30
pkg/ingress/controller/metric/collector/scrape.go
Normal file
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@ -0,0 +1,30 @@
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/*
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Copyright 2017 The Kubernetes 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
|
||||
|
||||
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,
|
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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.
|
||||
*/
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package collector
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import "github.com/prometheus/client_golang/prometheus"
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// Stopable defines a prometheus collector that can be stopped
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type Stopable interface {
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prometheus.Collector
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Stop()
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}
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type scrapeRequest struct {
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results chan<- prometheus.Metric
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done chan struct{}
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}
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225
pkg/ingress/controller/metric/collector/status.go
Normal file
225
pkg/ingress/controller/metric/collector/status.go
Normal file
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@ -0,0 +1,225 @@
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/*
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Copyright 2016 The Kubernetes Authors.
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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.
|
||||
*/
|
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|
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package collector
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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||||
"net/http"
|
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"regexp"
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"strconv"
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||||
|
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"github.com/golang/glog"
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)
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|
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var (
|
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ac = regexp.MustCompile(`Active connections: (\d+)`)
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sahr = regexp.MustCompile(`(\d+)\s(\d+)\s(\d+)`)
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reading = regexp.MustCompile(`Reading: (\d+)`)
|
||||
writing = regexp.MustCompile(`Writing: (\d+)`)
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waiting = regexp.MustCompile(`Waiting: (\d+)`)
|
||||
)
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type basicStatus struct {
|
||||
// Active total number of active connections
|
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Active int
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// Accepted total number of accepted client connections
|
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Accepted int
|
||||
// Handled total number of handled connections. Generally, the parameter value is the same as accepts unless some resource limits have been reached (for example, the worker_connections limit).
|
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Handled int
|
||||
// Requests total number of client requests.
|
||||
Requests int
|
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// Reading current number of connections where nginx is reading the request header.
|
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Reading int
|
||||
// Writing current number of connections where nginx is writing the response back to the client.
|
||||
Writing int
|
||||
// Waiting current number of idle client connections waiting for a request.
|
||||
Waiting int
|
||||
}
|
||||
|
||||
// https://github.com/vozlt/nginx-module-vts
|
||||
type vts struct {
|
||||
NginxVersion string `json:"nginxVersion"`
|
||||
LoadMsec int `json:"loadMsec"`
|
||||
NowMsec int `json:"nowMsec"`
|
||||
// Total connections and requests(same as stub_status_module in NGINX)
|
||||
Connections connections `json:"connections"`
|
||||
// Traffic(in/out) and request and response counts and cache hit ratio per each server zone
|
||||
ServerZones map[string]serverZone `json:"serverZones"`
|
||||
// Traffic(in/out) and request and response counts and cache hit ratio per each server zone filtered through
|
||||
// the vhost_traffic_status_filter_by_set_key directive
|
||||
FilterZones map[string]map[string]filterZone `json:"filterZones"`
|
||||
// Traffic(in/out) and request and response counts per server in each upstream group
|
||||
UpstreamZones map[string][]upstreamZone `json:"upstreamZones"`
|
||||
}
|
||||
|
||||
type serverZone struct {
|
||||
RequestCounter float64 `json:"requestCounter"`
|
||||
InBytes float64 `json:"inBytes"`
|
||||
OutBytes float64 `json:"outBytes"`
|
||||
Responses response `json:"responses"`
|
||||
Cache cache `json:"cache"`
|
||||
}
|
||||
|
||||
type filterZone struct {
|
||||
RequestCounter float64 `json:"requestCounter"`
|
||||
InBytes float64 `json:"inBytes"`
|
||||
OutBytes float64 `json:"outBytes"`
|
||||
Cache cache `json:"cache"`
|
||||
Responses response `json:"responses"`
|
||||
}
|
||||
|
||||
type upstreamZone struct {
|
||||
Responses response `json:"responses"`
|
||||
Server string `json:"server"`
|
||||
RequestCounter float64 `json:"requestCounter"`
|
||||
InBytes float64 `json:"inBytes"`
|
||||
OutBytes float64 `json:"outBytes"`
|
||||
ResponseMsec float64 `json:"responseMsec"`
|
||||
Weight float64 `json:"weight"`
|
||||
MaxFails float64 `json:"maxFails"`
|
||||
FailTimeout float64 `json:"failTimeout"`
|
||||
Backup BoolToFloat64 `json:"backup"`
|
||||
Down BoolToFloat64 `json:"down"`
|
||||
}
|
||||
|
||||
type cache struct {
|
||||
Miss float64 `json:"miss"`
|
||||
Bypass float64 `json:"bypass"`
|
||||
Expired float64 `json:"expired"`
|
||||
Stale float64 `json:"stale"`
|
||||
Updating float64 `json:"updating"`
|
||||
Revalidated float64 `json:"revalidated"`
|
||||
Hit float64 `json:"hit"`
|
||||
Scarce float64 `json:"scarce"`
|
||||
}
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||||
|
||||
type response struct {
|
||||
OneXx float64 `json:"1xx"`
|
||||
TwoXx float64 `json:"2xx"`
|
||||
TheeXx float64 `json:"3xx"`
|
||||
FourXx float64 `json:"4xx"`
|
||||
FiveXx float64 `json:"5xx"`
|
||||
}
|
||||
|
||||
type connections struct {
|
||||
Active float64 `json:"active"`
|
||||
Reading float64 `json:"reading"`
|
||||
Writing float64 `json:"writing"`
|
||||
Waiting float64 `json:"waiting"`
|
||||
Accepted float64 `json:"accepted"`
|
||||
Handled float64 `json:"handled"`
|
||||
Requests float64 `json:"requests"`
|
||||
}
|
||||
|
||||
// BoolToFloat64 ...
|
||||
type BoolToFloat64 float64
|
||||
|
||||
// UnmarshalJSON ...
|
||||
func (bit BoolToFloat64) UnmarshalJSON(data []byte) error {
|
||||
asString := string(data)
|
||||
if asString == "1" || asString == "true" {
|
||||
bit = 1
|
||||
} else if asString == "0" || asString == "false" {
|
||||
bit = 0
|
||||
} else {
|
||||
return fmt.Errorf(fmt.Sprintf("boolean unmarshal error: invalid input %s", asString))
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func getNginxStatus(port int, path string) (*basicStatus, error) {
|
||||
url := fmt.Sprintf("http://0.0.0.0:%v%v", port, path)
|
||||
glog.V(3).Infof("start scraping url: %v", url)
|
||||
|
||||
data, err := httpBody(url)
|
||||
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("unexpected error scraping nginx status page: %v", err)
|
||||
}
|
||||
|
||||
return parse(string(data)), nil
|
||||
}
|
||||
|
||||
func httpBody(url string) ([]byte, error) {
|
||||
resp, err := http.DefaultClient.Get(url)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("unexpected error scraping nginx : %v", err)
|
||||
}
|
||||
|
||||
data, err := ioutil.ReadAll(resp.Body)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("unexpected error scraping nginx (%v)", err)
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
|
||||
return nil, fmt.Errorf("unexpected error scraping nginx (status %v)", resp.StatusCode)
|
||||
}
|
||||
|
||||
return data, nil
|
||||
}
|
||||
|
||||
func getNginxVtsMetrics(port int, path string) (*vts, error) {
|
||||
url := fmt.Sprintf("http://0.0.0.0:%v%v", port, path)
|
||||
glog.V(3).Infof("start scraping url: %v", url)
|
||||
|
||||
data, err := httpBody(url)
|
||||
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("unexpected error scraping nginx vts (%v)", err)
|
||||
}
|
||||
|
||||
var vts *vts
|
||||
err = json.Unmarshal(data, &vts)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("unexpected error json unmarshal (%v)", err)
|
||||
}
|
||||
glog.V(3).Infof("scrape returned : %v", vts)
|
||||
return vts, nil
|
||||
}
|
||||
|
||||
func parse(data string) *basicStatus {
|
||||
acr := ac.FindStringSubmatch(data)
|
||||
sahrr := sahr.FindStringSubmatch(data)
|
||||
readingr := reading.FindStringSubmatch(data)
|
||||
writingr := writing.FindStringSubmatch(data)
|
||||
waitingr := waiting.FindStringSubmatch(data)
|
||||
|
||||
return &basicStatus{
|
||||
toInt(acr, 1),
|
||||
toInt(sahrr, 1),
|
||||
toInt(sahrr, 2),
|
||||
toInt(sahrr, 3),
|
||||
toInt(readingr, 1),
|
||||
toInt(writingr, 1),
|
||||
toInt(waitingr, 1),
|
||||
}
|
||||
}
|
||||
|
||||
func toInt(data []string, pos int) int {
|
||||
if len(data) == 0 {
|
||||
return 0
|
||||
}
|
||||
if pos > len(data) {
|
||||
return 0
|
||||
}
|
||||
if v, err := strconv.Atoi(data[pos]); err == nil {
|
||||
return v
|
||||
}
|
||||
return 0
|
||||
}
|
||||
72
pkg/ingress/controller/metric/collector/status_test.go
Normal file
72
pkg/ingress/controller/metric/collector/status_test.go
Normal file
|
|
@ -0,0 +1,72 @@
|
|||
/*
|
||||
Copyright 2015 The Kubernetes Authors.
|
||||
|
||||
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 collector
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"github.com/kylelemons/godebug/pretty"
|
||||
)
|
||||
|
||||
func TestParseStatus(t *testing.T) {
|
||||
tests := []struct {
|
||||
in string
|
||||
out *basicStatus
|
||||
}{
|
||||
{`Active connections: 43
|
||||
server accepts handled requests
|
||||
7368 7368 10993
|
||||
Reading: 0 Writing: 5 Waiting: 38`,
|
||||
&basicStatus{43, 7368, 7368, 10993, 0, 5, 38},
|
||||
},
|
||||
{`Active connections: 0
|
||||
server accepts handled requests
|
||||
1 7 0
|
||||
Reading: A Writing: B Waiting: 38`,
|
||||
&basicStatus{0, 1, 7, 0, 0, 0, 38},
|
||||
},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
r := parse(test.in)
|
||||
if diff := pretty.Compare(r, test.out); diff != "" {
|
||||
t.Logf("%v", diff)
|
||||
t.Fatalf("expected %v but returned %v", test.out, r)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestToint(t *testing.T) {
|
||||
tests := []struct {
|
||||
in []string
|
||||
pos int
|
||||
exp int
|
||||
}{
|
||||
{[]string{}, 0, 0},
|
||||
{[]string{}, 1, 0},
|
||||
{[]string{"A"}, 0, 0},
|
||||
{[]string{"1"}, 0, 1},
|
||||
{[]string{"a", "2"}, 1, 2},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
v := toInt(test.in, test.pos)
|
||||
if v != test.exp {
|
||||
t.Fatalf("expected %v but returned %v", test.exp, v)
|
||||
}
|
||||
}
|
||||
}
|
||||
273
pkg/ingress/controller/metric/collector/vts.go
Normal file
273
pkg/ingress/controller/metric/collector/vts.go
Normal file
|
|
@ -0,0 +1,273 @@
|
|||
/*
|
||||
Copyright 2016 The Kubernetes Authors.
|
||||
|
||||
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 collector
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
|
||||
"github.com/golang/glog"
|
||||
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
)
|
||||
|
||||
const ns = "nginx"
|
||||
|
||||
type (
|
||||
vtsCollector struct {
|
||||
scrapeChan chan scrapeRequest
|
||||
port int
|
||||
path string
|
||||
data *vtsData
|
||||
watchNamespace string
|
||||
ingressClass string
|
||||
}
|
||||
|
||||
vtsData struct {
|
||||
bytes *prometheus.Desc
|
||||
cache *prometheus.Desc
|
||||
connections *prometheus.Desc
|
||||
responses *prometheus.Desc
|
||||
requests *prometheus.Desc
|
||||
filterZoneBytes *prometheus.Desc
|
||||
filterZoneResponses *prometheus.Desc
|
||||
filterZoneCache *prometheus.Desc
|
||||
upstreamBackup *prometheus.Desc
|
||||
upstreamBytes *prometheus.Desc
|
||||
upstreamDown *prometheus.Desc
|
||||
upstreamFailTimeout *prometheus.Desc
|
||||
upstreamMaxFails *prometheus.Desc
|
||||
upstreamResponses *prometheus.Desc
|
||||
upstreamRequests *prometheus.Desc
|
||||
upstreamResponseMsec *prometheus.Desc
|
||||
upstreamWeight *prometheus.Desc
|
||||
}
|
||||
)
|
||||
|
||||
// NewNGINXVTSCollector returns a new prometheus collector for the VTS module
|
||||
func NewNGINXVTSCollector(watchNamespace, ingressClass string, port int, path string) Stopable {
|
||||
|
||||
p := vtsCollector{
|
||||
scrapeChan: make(chan scrapeRequest),
|
||||
port: port,
|
||||
path: path,
|
||||
watchNamespace: watchNamespace,
|
||||
ingressClass: ingressClass,
|
||||
}
|
||||
|
||||
p.data = &vtsData{
|
||||
bytes: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "bytes_total"),
|
||||
"Nginx bytes count",
|
||||
[]string{"ingress_class", "namespace", "server_zone", "direction"}, nil),
|
||||
|
||||
cache: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "cache_total"),
|
||||
"Nginx cache count",
|
||||
[]string{"ingress_class", "namespace", "server_zone", "type"}, nil),
|
||||
|
||||
connections: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "connections_total"),
|
||||
"Nginx connections count",
|
||||
[]string{"ingress_class", "namespace", "type"}, nil),
|
||||
|
||||
responses: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "responses_total"),
|
||||
"The number of responses with status codes 1xx, 2xx, 3xx, 4xx, and 5xx.",
|
||||
[]string{"ingress_class", "namespace", "server_zone", "status_code"}, nil),
|
||||
|
||||
requests: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "requests_total"),
|
||||
"The total number of requested client connections.",
|
||||
[]string{"ingress_class", "namespace", "server_zone"}, nil),
|
||||
|
||||
filterZoneBytes: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "filterzone_bytes_total"),
|
||||
"Nginx bytes count",
|
||||
[]string{"ingress_class", "namespace", "server_zone", "key", "direction"}, nil),
|
||||
|
||||
filterZoneResponses: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "filterzone_responses_total"),
|
||||
"The number of responses with status codes 1xx, 2xx, 3xx, 4xx, and 5xx.",
|
||||
[]string{"ingress_class", "namespace", "server_zone", "key", "status_code"}, nil),
|
||||
|
||||
filterZoneCache: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "filterzone_cache_total"),
|
||||
"Nginx cache count",
|
||||
[]string{"ingress_class", "namespace", "server_zone", "key", "type"}, nil),
|
||||
|
||||
upstreamBackup: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_backup"),
|
||||
"Current backup setting of the server.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server"}, nil),
|
||||
|
||||
upstreamBytes: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_bytes_total"),
|
||||
"The total number of bytes sent to this server.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server", "direction"}, nil),
|
||||
|
||||
upstreamDown: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "vts_upstream_down_total"),
|
||||
"Current down setting of the server.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server"}, nil),
|
||||
|
||||
upstreamFailTimeout: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_fail_timeout"),
|
||||
"Current fail_timeout setting of the server.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server"}, nil),
|
||||
|
||||
upstreamMaxFails: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_maxfails"),
|
||||
"Current max_fails setting of the server.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server"}, nil),
|
||||
|
||||
upstreamResponses: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_responses_total"),
|
||||
"The number of upstream responses with status codes 1xx, 2xx, 3xx, 4xx, and 5xx.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server", "status_code"}, nil),
|
||||
|
||||
upstreamRequests: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_requests_total"),
|
||||
"The total number of client connections forwarded to this server.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server"}, nil),
|
||||
|
||||
upstreamResponseMsec: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_response_msecs_avg"),
|
||||
"The average of only upstream response processing times in milliseconds.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server"}, nil),
|
||||
|
||||
upstreamWeight: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(ns, "", "upstream_weight"),
|
||||
"Current upstream weight setting of the server.",
|
||||
[]string{"ingress_class", "namespace", "upstream", "server"}, nil),
|
||||
}
|
||||
|
||||
go p.start()
|
||||
|
||||
return p
|
||||
}
|
||||
|
||||
// Describe implements prometheus.Collector.
|
||||
func (p vtsCollector) Describe(ch chan<- *prometheus.Desc) {
|
||||
ch <- p.data.bytes
|
||||
ch <- p.data.cache
|
||||
ch <- p.data.connections
|
||||
ch <- p.data.requests
|
||||
ch <- p.data.responses
|
||||
ch <- p.data.upstreamBackup
|
||||
ch <- p.data.upstreamBytes
|
||||
ch <- p.data.upstreamDown
|
||||
ch <- p.data.upstreamFailTimeout
|
||||
ch <- p.data.upstreamMaxFails
|
||||
ch <- p.data.upstreamRequests
|
||||
ch <- p.data.upstreamResponseMsec
|
||||
ch <- p.data.upstreamResponses
|
||||
ch <- p.data.upstreamWeight
|
||||
ch <- p.data.filterZoneBytes
|
||||
ch <- p.data.filterZoneCache
|
||||
ch <- p.data.filterZoneResponses
|
||||
}
|
||||
|
||||
// Collect implements prometheus.Collector.
|
||||
func (p vtsCollector) Collect(ch chan<- prometheus.Metric) {
|
||||
req := scrapeRequest{results: ch, done: make(chan struct{})}
|
||||
p.scrapeChan <- req
|
||||
<-req.done
|
||||
}
|
||||
|
||||
func (p vtsCollector) start() {
|
||||
for req := range p.scrapeChan {
|
||||
ch := req.results
|
||||
p.scrapeVts(ch)
|
||||
req.done <- struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
func (p vtsCollector) Stop() {
|
||||
close(p.scrapeChan)
|
||||
}
|
||||
|
||||
// scrapeVts scrape nginx vts metrics
|
||||
func (p vtsCollector) scrapeVts(ch chan<- prometheus.Metric) {
|
||||
nginxMetrics, err := getNginxVtsMetrics(p.port, p.path)
|
||||
if err != nil {
|
||||
glog.Warningf("unexpected error obtaining nginx status info: %v", err)
|
||||
return
|
||||
}
|
||||
|
||||
reflectMetrics(&nginxMetrics.Connections, p.data.connections, ch, p.ingressClass, p.watchNamespace)
|
||||
|
||||
for name, zones := range nginxMetrics.UpstreamZones {
|
||||
for pos, value := range zones {
|
||||
reflectMetrics(&zones[pos].Responses, p.data.upstreamResponses, ch, p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamRequests,
|
||||
prometheus.CounterValue, zones[pos].RequestCounter, p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamDown,
|
||||
prometheus.CounterValue, float64(zones[pos].Down), p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamWeight,
|
||||
prometheus.CounterValue, zones[pos].Weight, p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamResponseMsec,
|
||||
prometheus.CounterValue, zones[pos].ResponseMsec, p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamBackup,
|
||||
prometheus.CounterValue, float64(zones[pos].Backup), p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamFailTimeout,
|
||||
prometheus.CounterValue, zones[pos].FailTimeout, p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamMaxFails,
|
||||
prometheus.CounterValue, zones[pos].MaxFails, p.ingressClass, p.watchNamespace, name, value.Server)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamBytes,
|
||||
prometheus.CounterValue, zones[pos].InBytes, p.ingressClass, p.watchNamespace, name, value.Server, "in")
|
||||
ch <- prometheus.MustNewConstMetric(p.data.upstreamBytes,
|
||||
prometheus.CounterValue, zones[pos].OutBytes, p.ingressClass, p.watchNamespace, name, value.Server, "out")
|
||||
}
|
||||
}
|
||||
|
||||
for name, zone := range nginxMetrics.ServerZones {
|
||||
reflectMetrics(&zone.Responses, p.data.responses, ch, p.ingressClass, p.watchNamespace, name)
|
||||
reflectMetrics(&zone.Cache, p.data.cache, ch, p.ingressClass, p.watchNamespace, name)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(p.data.requests,
|
||||
prometheus.CounterValue, zone.RequestCounter, p.ingressClass, p.watchNamespace, name)
|
||||
ch <- prometheus.MustNewConstMetric(p.data.bytes,
|
||||
prometheus.CounterValue, zone.InBytes, p.ingressClass, p.watchNamespace, name, "in")
|
||||
ch <- prometheus.MustNewConstMetric(p.data.bytes,
|
||||
prometheus.CounterValue, zone.OutBytes, p.ingressClass, p.watchNamespace, name, "out")
|
||||
}
|
||||
|
||||
for serverZone, keys := range nginxMetrics.FilterZones {
|
||||
for name, zone := range keys {
|
||||
reflectMetrics(&zone.Responses, p.data.filterZoneResponses, ch, p.ingressClass, p.watchNamespace, serverZone, name)
|
||||
reflectMetrics(&zone.Cache, p.data.filterZoneCache, ch, p.ingressClass, p.watchNamespace, serverZone, name)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(p.data.filterZoneBytes,
|
||||
prometheus.CounterValue, zone.InBytes, p.ingressClass, p.watchNamespace, serverZone, name, "in")
|
||||
ch <- prometheus.MustNewConstMetric(p.data.filterZoneBytes,
|
||||
prometheus.CounterValue, zone.OutBytes, p.ingressClass, p.watchNamespace, serverZone, name, "out")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func reflectMetrics(value interface{}, desc *prometheus.Desc, ch chan<- prometheus.Metric, labels ...string) {
|
||||
val := reflect.ValueOf(value).Elem()
|
||||
|
||||
for i := 0; i < val.NumField(); i++ {
|
||||
tag := val.Type().Field(i).Tag
|
||||
l := append(labels, tag.Get("json"))
|
||||
ch <- prometheus.MustNewConstMetric(desc,
|
||||
prometheus.CounterValue, val.Field(i).Interface().(float64),
|
||||
l...)
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue