97 lines
2.5 KiB
Go
97 lines
2.5 KiB
Go
/*
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Copyright 2016 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 controller
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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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"k8s.io/ingress-nginx/pkg/ingress/controller/metric/collector"
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)
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const (
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ngxStatusPath = "/nginx_status"
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ngxVtsPath = "/nginx_status/format/json"
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)
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func (n *NGINXController) setupMonitor(sm statusModule) {
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csm := n.statusModule
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if csm != sm {
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glog.Infof("changing prometheus collector from %v to %v", csm, sm)
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n.stats.stop(csm)
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n.stats.start(sm)
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n.statusModule = sm
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}
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}
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type statsCollector struct {
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process prometheus.Collector
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basic collector.Stopable
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vts collector.Stopable
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namespace string
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watchClass string
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port int
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}
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func (s *statsCollector) stop(sm statusModule) {
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switch sm {
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case defaultStatusModule:
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s.basic.Stop()
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prometheus.Unregister(s.basic)
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case vtsStatusModule:
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s.vts.Stop()
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prometheus.Unregister(s.vts)
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}
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}
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func (s *statsCollector) start(sm statusModule) {
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switch sm {
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case defaultStatusModule:
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s.basic = collector.NewNginxStatus(s.namespace, s.watchClass, s.port, ngxStatusPath)
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prometheus.Register(s.basic)
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break
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case vtsStatusModule:
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s.vts = collector.NewNGINXVTSCollector(s.namespace, s.watchClass, s.port, ngxVtsPath)
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prometheus.Register(s.vts)
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break
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}
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}
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func newStatsCollector(ns, class, binary string, port int) *statsCollector {
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glog.Infof("starting new nginx stats collector for Ingress controller running in namespace %v (class %v)", ns, class)
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glog.Infof("collector extracting information from port %v", port)
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pc, err := collector.NewNamedProcess(true, collector.BinaryNameMatcher{
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Name: "nginx",
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Binary: binary,
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})
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if err != nil {
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glog.Fatalf("unexpected error registering nginx collector: %v", err)
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}
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err = prometheus.Register(pc)
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if err != nil {
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glog.Fatalf("unexpected error registering nginx collector: %v", err)
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}
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return &statsCollector{
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namespace: ns,
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watchClass: class,
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process: pc,
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port: port,
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}
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}
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