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main.go
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62 lines (48 loc) · 1.5 KB
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package main
import (
"context"
"fmt"
"log"
"net/http"
"os/signal"
"syscall"
"time"
"github.com/joho/godotenv"
"simpleblog/internal/server"
)
func gracefulShutdown(apiServer *http.Server, done chan bool) {
// Create context that listens for the interrupt signal from the OS.
ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
defer stop()
// Listen for the interrupt signal.
<-ctx.Done()
log.Println("shutting down gracefully, press Ctrl+C again to force")
stop() // Allow Ctrl+C to force shutdown
// The context is used to inform the server it has 5 seconds to finish
// the request it is currently handling
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if err := apiServer.Shutdown(ctx); err != nil {
log.Printf("Server forced to shutdown with error: %v", err)
}
log.Println("Server exiting")
// Notify the main goroutine that the shutdown is complete
done <- true
}
func main() {
if err := godotenv.Load(); err != nil {
log.Printf("Error loading .env file: %v", err)
}
server := server.NewServer()
// Create a done channel to signal when the shutdown is complete
done := make(chan bool, 1)
// Run graceful shutdown in a separate goroutine
go gracefulShutdown(server, done)
err := server.ListenAndServe()
if err != nil && err != http.ErrServerClosed {
panic(fmt.Sprintf("http server error: %s", err))
}
// Wait for the graceful shutdown to complete
<-done
log.Println("Graceful shutdown complete.")
}