61 lines
1.2 KiB
Go
61 lines
1.2 KiB
Go
package main
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import (
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"context"
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"fmt"
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"io"
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"net"
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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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"time"
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)
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func run(ctx context.Context, w io.Writer, args []string) error {
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ctx, cancel := signal.NotifyContext(ctx, os.Interrupt)
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defer cancel()
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config := &Config{
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Host: "",
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Port: "3333",
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}
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srv := NewServer(config)
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httpServer := &http.Server{
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Addr: net.JoinHostPort(config.Host, config.Port),
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Handler: srv,
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}
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go func() {
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fmt.Fprintf(w, "Listening on %s\n", httpServer.Addr)
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if err := httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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fmt.Fprintf(os.Stderr, "Error listening and serving: %s\n", err)
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}
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}()
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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<-ctx.Done()
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shutdownCtx := context.Background()
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shutdownCtx, cancel := context.WithTimeout(shutdownCtx, 10*time.Second)
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defer cancel()
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if err := httpServer.Shutdown(shutdownCtx); err != nil {
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fmt.Fprintf(os.Stderr, "Error shutting down http server: %s\n", err)
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}
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}()
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wg.Wait()
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fmt.Fprintln(w, "Shutting down")
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return nil
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}
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func main() {
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ctx := context.Background()
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if err := run(ctx, os.Stdout, os.Args); err != nil {
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fmt.Fprintf(os.Stderr, "%s\n", err)
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os.Exit(1)
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}
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}
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