mirror of https://github.com/rocboss/paopao-ce
Michael Li
1 year ago
commit
30d268a269
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// Copyright 2023 ROC. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package prometheus
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import (
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"github.com/prometheus/client_golang/prometheus"
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"github.com/rocboss/paopao-ce/internal/conf"
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"github.com/rocboss/paopao-ce/internal/core"
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"github.com/sirupsen/logrus"
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)
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type metrics struct {
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siteInfo *prometheus.GaugeVec
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ds core.DataService
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wc core.WebCache
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}
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func (m *metrics) updateSiteInfo() {
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if onlineUserKeys, err := m.wc.Keys(conf.PrefixOnlineUser + "*"); err == nil {
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maxOnline := len(onlineUserKeys)
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m.siteInfo.With(prometheus.Labels{"name": "max_online"}).Set(float64(maxOnline))
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} else {
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logrus.Warnf("update promethues metrics[site_info_max_online] occurs error: %s", err)
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}
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if registerUserCount, err := m.ds.GetRegisterUserCount(); err == nil {
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m.siteInfo.With(prometheus.Labels{"name": "register_user_count"}).Set(float64(registerUserCount))
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} else {
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logrus.Warnf("update promethues metrics[site_info_register_user_count] occurs error: %s", err)
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}
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}
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func (m *metrics) onUpdate() {
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logrus.Debugf("update promethues metrics job running")
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m.updateSiteInfo()
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}
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func newMetrics(reg prometheus.Registerer, ds core.DataService, wc core.WebCache) *metrics {
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m := &metrics{
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siteInfo: prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
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Namespace: "paopao",
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Subsystem: "site",
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Name: "simple_info",
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Help: "paopao-ce site simple information.",
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},
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[]string{
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// metric name
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"name",
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}),
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ds: ds,
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wc: wc,
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}
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reg.MustRegister(m.siteInfo)
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return m
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}
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@ -0,0 +1,41 @@
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// Copyright 2023 ROC. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package prometheus
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import (
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"net/http"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/collectors"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/robfig/cron/v3"
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"github.com/rocboss/paopao-ce/internal/conf"
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"github.com/rocboss/paopao-ce/internal/core"
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"github.com/rocboss/paopao-ce/internal/events"
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"github.com/sirupsen/logrus"
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)
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func scheduleJobs(metrics *metrics) {
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spec := conf.JobManagerSetting.UpdateMetricsInterval
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schedule, err := cron.ParseStandard(spec)
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if err != nil {
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panic(err)
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}
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events.OnTask(schedule, metrics.onUpdate)
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logrus.Debug("shedule prometheus metrics update jobs complete")
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}
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func NewHandler(ds core.DataService, wc core.WebCache) http.Handler {
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// Create non-global registry.
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registry := prometheus.NewRegistry()
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// Add go runtime metrics and process collectors.
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registry.MustRegister(
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collectors.NewGoCollector(),
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collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
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)
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metrics := newMetrics(registry, ds, wc)
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scheduleJobs(metrics)
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return promhttp.HandlerFor(registry, promhttp.HandlerOpts{EnableOpenMetrics: true})
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}
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@ -0,0 +1,64 @@
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// Copyright 2023 ROC. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package service
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import (
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"fmt"
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"net/http"
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"github.com/Masterminds/semver/v3"
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"github.com/fatih/color"
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"github.com/rocboss/paopao-ce/internal/conf"
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"github.com/rocboss/paopao-ce/internal/dao"
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"github.com/rocboss/paopao-ce/internal/dao/cache"
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"github.com/rocboss/paopao-ce/internal/metrics/prometheus"
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)
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var (
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_ Service = (*metricsService)(nil)
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)
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type metricsService struct {
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*baseHttpService
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}
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func (s *metricsService) Name() string {
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return "MetricsService"
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}
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func (s *metricsService) Version() *semver.Version {
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return semver.MustParse("v0.1.0")
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}
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func (s *metricsService) OnInit() error {
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s.registerRoute(s, nil)
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return nil
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}
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func (s *metricsService) String() string {
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return fmt.Sprintf("listen on %s\n", color.GreenString("http://%s:%s", conf.MetricsServerSetting.HttpIp, conf.MetricsServerSetting.HttpPort))
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}
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func newMetricsService() Service {
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addr := conf.MetricsServerSetting.HttpIp + ":" + conf.MetricsServerSetting.HttpPort
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// notice this step just to register pprof server to start. don't share server with pprof.
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server := httpServers.from(addr, func() *httpServer {
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ds, wc := dao.DataService(), cache.NewWebCache()
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mux := http.NewServeMux()
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mux.Handle("/metrics", prometheus.NewHandler(ds, wc))
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return &httpServer{
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baseServer: newBaseServe(),
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server: &http.Server{
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Addr: addr,
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Handler: mux,
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},
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}
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})
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return &metricsService{
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baseHttpService: &baseHttpService{
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server: server,
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},
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}
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}
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