浅谈Laravel核心解读之Console内核

<?php
// 第一部分： 创建应用实例
$app = new Illuminate\\Foundation\\Application(
  realpath(__DIR__.\'/../\')
);

// 第二部分： 完成内核绑定
$app->singleton(
  Illuminate\\Contracts\\Http\\Kernel::class,
  App\\Http\\Kernel::class
);
// console内核绑定
$app->singleton(
  Illuminate\\Contracts\\Console\\Kernel::class,
  App\\Console\\Kernel::class
);

$app->singleton(
  Illuminate\\Contracts\\Debug\\ExceptionHandler::class,
  App\\Exceptions\\Handler::class
);

return $app;

/**
* Define the application\'s command schedule.
*
* @param \\Illuminate\\Console\\Scheduling\\Schedule $schedule
* @return void
*/
protected function schedule(Schedule $schedule)
{
  // $schedule->command(\'inspire\')
  //     ->hourly();
}
/**
* Register the commands for the application.
*
* @return void
*/
protected function commands()
{
  $this->load(__DIR__.\'/Commands\');
  require  _path(\'routes/console.php\');
}

public function __construct(Application $app, Dispatcher $events)
{
  if (! defined(\'ARTISAN_BINARY\')) {
    define(\'ARTISAN_BINARY\', \'artisan\');
  }

  $this->app = $app;
  $this->events = $events;

  $this->app->booted(function () {
    $this->defineConsoleSchedule();
  });
}

$kernel = $app->make(Illuminate\\Contracts\\Console\\Kernel::class);

$status = $kernel->handle(
  $input = new Symfony\\Component\\Console\\Input\\ArgvInput,
  new Symfony\\Component\\Console\\Output\\ConsoleOutput
);

protected $bootstrappers = [
  \\Illuminate\\Foundation\\Bootstrap\\LoadEnvironmentVariables::class,
  \\Illuminate\\Foundation\\Bootstrap\\LoadConfiguration::class,
  \\Illuminate\\Foundation\\Bootstrap\\HandleExceptions::class,
  \\Illuminate\\Foundation\\Bootstrap\\RegisterFacades::class,
  \\Illuminate\\Foundation\\Bootstrap\\SetRequestForConsole::class,
  \\Illuminate\\Foundation\\Bootstrap\\RegisterProviders::class,
  \\Illuminate\\Foundation\\Bootstrap\\BootProviders::class,
];

name Illuminate\\Foundation\\Console;
class Kernel implements KernelContract
{
  public function handle($input, $output = null)
  {
    try {
      $this->bootstrap();

      return $this->getArtisan()->run($input, $output);
    } catch (Exception $e) {
      $this->reportException($e);

      $this->renderException($output, $e);

      return 1;
    } catch (Throwable $e) {
      $e = new FatalThrowableError($e);

      $this->reportException($e);

      $this->renderException($output, $e);

      return 1;
    }
  }
}

namespace Symfony\\Component\\Console;
class Application
{
  //执行命令
  public function run(InputInterface $input = null, OutputInterface $output = null)
  {
    ......
    try {
      $exitCode = $this->doRun($input, $output);
    } catch {
      ......
    }
    ......
    return $exitCode;
  }
  
  public function doRun(InputInterface $input, OutputInterface $output)
  {
    //解析出命令名称
    $name = $this->getCommandName($input);
    
    //解析出入参
    if (!$name) {
      $name = $this->defaultCommand;
      $definition = $this->getDefinition();
      $definition->setArguments(array_merge(
        $definition->getArguments(),
        array(
          \'command\' => new InputArgument(\'command\', InputArgument::OPTIONAL, $definition->getArgument(\'command\')->getDe ion(), $name),
        )
      ));
    }
    ......
    try {
      //通过命令名称查找出命令类（命名空间、类名等）
      $command = $this->find($name);
    }
    ......
    //运行命令类
    $exitCode = $this->doRunCommand($command, $input, $output);
    
    return $exitCode;
  }
  
  protected function doRunCommand(Command $command, InputInterface $input, OutputInterface $output)
  {
    ......
    //执行命令类的run方法来处理任务
    $exitCode = $command->run($input, $output);
    ......
    
    return $exitcode;
  }
}