multicloser

package main

import (
	"fmt"
	"log"

	"github.com/abcxyz/pkg/multicloser"
)

func setup() (*multicloser.Closer, error) {
	var closer *multicloser.Closer

	client1, err := newClient()
	if err != nil {
		return closer, fmt.Errorf("failed to create client1: %w", err)
	}
	closer = multicloser.Append(closer, client1.Close)

	client2, err := newClient()
	if err != nil {
		return closer, fmt.Errorf("failed to create client2: %w", err)
	}
	closer = multicloser.Append(closer, client2.Close)

	return closer, nil
}

// client is just a stub to demonstrate something that needs to be closed.
type client struct{}

func (c *client) Close() error {
	return nil
}

func newClient() (*client, error) {
	return &client{}, nil
}

func main() {
	closer, err := setup()
	defer func() {
		if err := closer.Close(); err != nil {
			log.Printf("failed to close: %s\n", err)
		}
	}()
	if err != nil {
		// handle err
	}

}