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cmd/stupgrades: Basic process metrics

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This commit is contained in:
Jakob Borg 2024-06-03 07:17:32 +02:00
parent 2f281799c1
commit 2bb5b2244b
1 changed files with 29 additions and 7 deletions
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36
cmd/stupgrades/main.go
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@ -19,16 +19,18 @@ import (
"time"
"github.com/alecthomas/kong"
"github.com/prometheus/client_golang/prometheus/promhttp"
_ "github.com/syncthing/syncthing/lib/automaxprocs"
"github.com/syncthing/syncthing/lib/httpcache"
"github.com/syncthing/syncthing/lib/upgrade"
)
type cli struct {
Listen string `default:":8080" help:"Listen address"`
URL string `short:"u" default:"https://api.github.com/repos/syncthing/syncthing/releases?per_page=25" help:"GitHub releases url"`
Forward []string `short:"f" help:"Forwarded pages, format: /path->https://example/com/url"`
CacheTime time.Duration `default:"15m" help:"Cache time"`
Listen string `default:":8080" help:"Listen address"`
MetricsListen string `default:":8081" help:"Listen address for metrics"`
URL string `short:"u" default:"https://api.github.com/repos/syncthing/syncthing/releases?per_page=25" help:"GitHub releases url"`
Forward []string `short:"f" help:"Forwarded pages, format: /path->https://example/com/url"`
CacheTime time.Duration `default:"15m" help:"Cache time"`
}
func main() {
@ -41,17 +43,37 @@ func main() {
}
func server(params *cli) error {
http.Handle("/meta.json", httpcache.SinglePath(&githubReleases{url: params.URL}, params.CacheTime))
if params.MetricsListen != "" {
mux := http.NewServeMux()
mux.Handle("/metrics", promhttp.Handler())
go func() {
log.Println("Listening for metrics on", params.MetricsListen)
if err := http.ListenAndServe(params.MetricsListen, mux); err != nil {
log.Fatalf("Failed to start metrics server: %v", err)
}
}()
}
mux := http.NewServeMux()
mux.Handle("/meta.json", httpcache.SinglePath(&githubReleases{url: params.URL}, params.CacheTime))
for _, fwd := range params.Forward {
path, url, ok := strings.Cut(fwd, "->")
if !ok {
return fmt.Errorf("invalid forward: %q", fwd)
}
http.Handle(path, httpcache.SinglePath(&proxy{url: url}, params.CacheTime))
log.Println("Forwarding", path, "to", url)
mux.Handle(path, httpcache.SinglePath(&proxy{url: url}, params.CacheTime))
}
return http.ListenAndServe(params.Listen, nil)
srv := &http.Server{
Addr: params.Listen,
Handler: mux,
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
}
srv.SetKeepAlivesEnabled(false)
return srv.ListenAndServe()
}
type githubReleases struct {