main.go

package main

import (
	"context"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/mdshack/ipmi-api/pkg/server"
)

func main() {
	// Create server instance
	srv := server.New()

	// Create HTTP server
	httpServer := &http.Server{
		Addr:    fmt.Sprintf("%s:%s", getConfig("IPMI_API_HOST", "0.0.0.0"), getConfig("IPMI_API_PORT", "8080")),
		Handler: srv.Router,
	}

	// Channel to listen for interrupt signal
	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)

	// Run server in a goroutine
	go func() {
		log.Printf("Starting server on %s", httpServer.Addr)
		if err := httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			log.Fatalf("Could not listen on %s: %v", httpServer.Addr, err)
		}
	}()

	// Wait for interrupt signal
	<-quit
	log.Println("Shutting down server...")

	// Create a context with timeout for graceful shutdown
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	// Attempt graceful shutdown
	if err := httpServer.Shutdown(ctx); err != nil {
		log.Fatalf("Server forced to shutdown: %v", err)
	}

	// Close all IPMI connections
	srv.Close()

	log.Println("Server exited")
}

// getConfig retrieves configuration from environment variables with a default value
func getConfig(key, defaultValue string) string {
	if value := os.Getenv(key); value != "" {
		return value
	}
	return defaultValue
}