Fabian Gasper
103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
package main
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import (
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"context"
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"log"
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"net/http"
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"os"
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"os/signal"
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"sync"
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"syscall"
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"time"
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"github.com/gorilla/mux"
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"varde/internal/middleware"
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"varde/modules/keyserver"
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"varde/modules/webhook"
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"varde/modules/webserver"
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)
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func main() {
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cfg := loadConfig()
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r := mux.NewRouter()
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r.Use(middleware.SecurityHeaders)
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r.HandleFunc("/api/healthz", healthHandler).Methods("GET", "HEAD")
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var active []Module
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// Registration order matters: gorilla/mux matches in the order
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// routes are registered, not by specificity. Webhook and keyserver
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// use specific paths and must come before webserver's catch-all "/".
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if cfg.Webhook.Enabled {
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m := webhook.New(cfg.Webhook, cfg.Ntfy)
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m.RegisterRoutes(r)
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active = append(active, m)
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}
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if cfg.Keyserver.Enabled {
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m := keyserver.New(cfg.Keyserver)
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m.RegisterRoutes(r)
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active = append(active, m)
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}
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if cfg.Webserver.Enabled {
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m := webserver.New(cfg.Webserver)
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m.RegisterRoutes(r) // catch-all — must stay last
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active = append(active, m)
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}
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ctx, cancel := context.WithCancel(context.Background())
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var wg sync.WaitGroup
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for _, m := range active {
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wg.Add(1)
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go func(m Module) {
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defer wg.Done()
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if err := m.Start(ctx); err != nil {
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log.Printf("module %s: start error: %v", m.Name(), err)
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}
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}(m)
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}
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srv := &http.Server{
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Addr: ":" + cfg.Port,
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Handler: r,
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}
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go func() {
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log.Printf("Listening on :%s", cfg.Port)
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if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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log.Fatalf("server error: %v", err)
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}
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}()
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stop := make(chan os.Signal, 1)
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signal.Notify(stop, syscall.SIGTERM, syscall.SIGINT)
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<-stop
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log.Println("Shutdown signal received, draining connections...")
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cancel()
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shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer shutdownCancel()
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if err := srv.Shutdown(shutdownCtx); err != nil {
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log.Printf("graceful shutdown failed: %v", err)
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}
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for _, m := range active {
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if err := m.Stop(shutdownCtx); err != nil {
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log.Printf("module %s: stop error: %v", m.Name(), err)
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}
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}
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wg.Wait()
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log.Println("Server shut down cleanly")
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}
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func healthHandler(w http.ResponseWriter, req *http.Request) {
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w.WriteHeader(http.StatusOK)
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w.Write([]byte("ok"))
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}
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