mirror of https://github.com/goharbor/harbor.git
111 lines
2.6 KiB
Go
111 lines
2.6 KiB
Go
package exporter
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import (
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"errors"
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"fmt"
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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/promhttp"
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"github.com/goharbor/harbor/src/lib/log"
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)
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// Opt is the config of Harbor exporter
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type Opt struct {
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Port int
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MetricsPath string
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ExporterMetricsEnabled bool
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MaxRequests int
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TLSEnabled bool
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Certificate string
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Key string
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CacheDuration int64
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CacheCleanInterval int64
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}
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// NewExporter creates a exporter for Harbor with the configuration
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func NewExporter(opt *Opt) *Exporter {
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exporter := &Exporter{
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Opt: opt,
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collectors: make(map[string]prometheus.Collector),
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}
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if opt.CacheDuration > 0 {
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CacheInit(opt)
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}
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err := exporter.RegisterCollector(NewHealthCollect(hbrCli),
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NewSystemInfoCollector(hbrCli),
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NewProjectCollector(),
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NewJobServiceCollector())
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if err != nil {
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log.Warningf("calling RegisterCollector() errored out, error: %v", err)
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}
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r := prometheus.NewRegistry()
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r.MustRegister(exporter)
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exporter.Server = newServer(opt, r)
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return exporter
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}
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// Exporter is struct for Harbor which can used to connection Harbor and collecting data
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type Exporter struct {
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*http.Server
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Opt *Opt
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collectors map[string]prometheus.Collector
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}
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// RegisterCollector register a collector to expoter
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func (e *Exporter) RegisterCollector(collectors ...collector) error {
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for _, c := range collectors {
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name := c.GetName()
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if _, ok := e.collectors[name]; ok {
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return errors.New("collector name is already registered")
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}
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e.collectors[name] = c
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log.Infof("collector %s registered ...", name)
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}
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return nil
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}
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func newServer(opt *Opt, _ *prometheus.Registry) *http.Server {
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exporterMux := http.NewServeMux()
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exporterMux.Handle(opt.MetricsPath, promhttp.Handler())
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exporterMux.HandleFunc("/", func(w http.ResponseWriter, _ *http.Request) {
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_, _ = w.Write([]byte(`<html>
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<head><title>Harbor Exporter</title></head>
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<body>
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<h1>Harbor Exporter</h1>
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<p><a href="` + opt.MetricsPath + `">Metrics</a></p>
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</body>
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</html>`))
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})
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return &http.Server{
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Addr: fmt.Sprintf(":%d", opt.Port),
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Handler: exporterMux,
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}
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}
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// Describe implements prometheus.Collector
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func (e *Exporter) Describe(c chan<- *prometheus.Desc) {
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for _, v := range e.collectors {
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v.Describe(c)
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}
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}
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// Collect implements prometheus.Collector
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func (e *Exporter) Collect(c chan<- prometheus.Metric) {
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for _, v := range e.collectors {
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v.Collect(c)
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}
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}
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func checkErr(err error, arg string) {
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if err == nil {
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return
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}
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log.Errorf("%s: %v", arg, err)
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}
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