【Laravel】コマンドでAPIを並列実行する方法を解説！

<?php

namespace App\Console\Commands\Dev;

use GuzzleHttp\Client;
use GuzzleHttp\Promise;
use GuzzleHttp\RequestOptions;
use Illuminate\Console\Command;

class Command extends Command
{
    protected $signature = 'parallel-exec {count : 並列実行数}';

    protected $description = '並列実行コマンド';

    private const URL = 'https://sample.com/api';

    public function __construct()
    {
        parent::__construct();
    }

    public function handle()
    {
        $count = (int) $this->argument('count');

        if (! $this->confirm("{$count}件並列実行します。\nよろしいですか？")) {
            return 1;
        }

        $this->info('開始');

        $client = new Client;
        $promises = [];
        try {
            for ($i = 0; $i < $count; $i++) {
                $promises["req_{$i}"] = $client->postAsync(self::URL, [
                    RequestOptions::JSON => [
                        'id' => 1,
                    ],
                ]);
            }

            $this->info("{$count}件のリクエストを並列で実行中...");

            Promise\Utils::settle($promises)->wait();

            $this->info('終了');

            return 0;
        } catch (\Exception $e) {
            $this->error('並列実行処理中にエラーが発生しました。');

            return 1;
        }
    }
}