[英]Laravel Commands, Pthreads and Closure
There is a need to perform a specific process multiple threads.需要多线程执行特定的进程。 I learned about the extension for php - pthreads.
我了解了 php - pthreads 的扩展。
For example, a simple script outside Laravel works fine and I liked the results.例如,Laravel 之外的一个简单脚本运行良好,我喜欢结果。 I decided to move in Laravel, and faced with the problem.
我决定搬到 Laravel,并面临这个问题。 Of course I searched in google, found some questions on stackoverflow, where replied the author of extension.
当然我在谷歌搜索,在stackoverflow上发现了一些问题,在那里回答了扩展的作者。 But me did not help his answers, so I ask you to help me.
但是我没有帮他回答,所以我请你帮帮我。
Answered Question extension author. 回答问题扩展作者。
There is a class App\\Commands\\QuestionsParserCommand.有一个类 App\\Commands\\QuestionsParserCommand。 Inside I created an instance of the class App\\My\\Questions\\QuestionsParser and call the method init().
在里面,我创建了一个类 App\\My\\Questions\\QuestionsParser 的实例并调用方法 init()。 Then the code of the method init():
然后方法init()的代码:
// Create a pool
$pool = new Pool($this->threads, ParserWorkers::class);
// Create a thread class
$thread = new class extends Threaded
{
public function run()
{
// The class will receive data from a provider
// that will be shared between threads through ParserWorkers.
// It will work with the API and store the data in the database.
// The need to work with the threads,
// because the data for processing an incredible amount.
echo '+';
}
};
// Start a threads
for ($i = 0; $i < $this->threads; $i++) {
$pool->submit($thread);
}
$pool->shutdown();
Class ParserWorkers inherits from Worker and yet has an empty method run(). ParserWorkers 类继承自 Worker,但有一个空方法 run()。
As a result, I run the script and get a message in the log of php:结果,我运行脚本,在php的日志中得到一条消息:
[13-Oct-2016 11:27:35 Europe/Moscow] PHP Fatal error: Uncaught Exception: Serialization of 'Closure' is not allowed in [no active file]:0
Stack trace:
#0 {main}
thrown in [no active file] on line 0
Information: Laravel 5.2.43, php 7.0.8, Windows信息:Laravel 5.2.43、php 7.0.8、Windows
Thank you all!谢谢大家!
First you can get acquainted with the strategy of the author of the library: https://github.com/krakjoe/pthreads-autoloading-composer首先可以熟悉一下库作者的策略: https : //github.com/krakjoe/pthreads-autoloading-composer
The strategy used here ensures that each thread (Worker) gets a thread local copy of the framework, or whatever is being loaded, but does not break the abilities of objects that descend from pthreads.此处使用的策略可确保每个线程(Worker)获得框架的线程本地副本或正在加载的任何内容,但不会破坏从 pthread 派生的对象的能力。
Secondly, to start working with laravel features (like Service Providers, Facades, Helpers, etc), you need to initialize laravel.其次,要开始使用 laravel 功能(如服务提供者、门面、助手等),您需要初始化 laravel。
I looked at how to initialize the application in the tests/CreatesApplication.php file.我查看了如何在 tests/CreatesApplication.php 文件中初始化应用程序。 The code below shows how to do this for Laravel 5.7 with php 7.2.
下面的代码显示了如何使用 php 7.2 为 Laravel 5.7 执行此操作。
Important: specify the correct path to autoload.php and app.php relative to the Autoloader.php file location.重要提示:指定 autoload.php 和 app.php 相对于 Autoloader.php 文件位置的正确路径。
namespace App\Console\Commands;
use Worker;
use Illuminate\Contracts\Console\Kernel;
class Autoloader extends Worker
{
public function run()
{
require __DIR__. '/../../../vendor/autoload.php';
$app = require __DIR__.'/../../../bootstrap/app.php';
$app->make(Kernel::class)->bootstrap();
}
public function start($options = PTHREADS_INHERIT_ALL)
{
return parent::start(PTHREADS_INHERIT_INI);
}
}
namespace App\Console\Commands;
use Exception;
use Threaded;
class OperatorThread extends Threaded
{
/**
* @var OperatorThreaded
*/
private $operator;
private $error;
public function __construct(OperatorThreaded $operator)
{
$this->operator = $operator;
}
public function run()
{
try {
$this->operator->handle();
} catch (Exception $exception) {
$this->error = (string) $exception;
}
}
public function getError() {
return $this->error;
}
}
namespace App\Console\Commands;
class OperatorThreaded
{
private $i;
public function __construct($i)
{
$this->i = $i;
}
public function handle()
{
sleep(rand(1,3));
if (app()->isBooted()) {
echo $this->i . PHP_EOL;
}
}
}
Now you can use Laravel with pthreads:现在您可以将 Laravel 与 pthreads 一起使用:
namespace App\Console\Commands;
use Pool;
use Illuminate\Console\Command;
class Test extends Command
{
protected $description = 'test';
protected $signature = 'test';
public function handle()
{
$operators = [];
for ($i=0; $i<5; $i++) {
$operators[] = new OperatorThreaded($i);
}
$pool = new Pool(count($operators), Autoloader::class);
foreach ($operators as $operator) {
$thread = new OperatorThread($operator);
$pool->submit($thread);
}
while ($pool->collect());
$pool->shutdown();
}
}
$ php artisan test
1
2
4
0
3
foreach ($this->pool as $w) {
$w->start(PTHREADS_INHERIT_ALL ^ PTHREADS_INHERIT_CLASSES);
}
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