console.md

console 应用注解说明

• 注册console kernel
  

• 从容器里检索并实例【反射】

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

实例后做如下动作

• run handle

  

  控制台命令注册加载
  

  获取console Application

  
  console Application 构造

  public function __construct(Container $laravel, Dispatcher $events, $version)
      {
          parent::__construct('Laravel Framework', $version);
  
          /**
          laravel框架的容器
          事件调度器
           **/
          $this->laravel = $laravel;
          $this->events = $events;
          $this->setAutoExit(false);
          $this->setCatchExceptions(false);
  
          $this->events->dispatch(new Events\ArtisanStarting($this));
  
          /**
           * 这里在框架启动时【先运行服务提供器--  Illuminate\Foundation\Providers\ConsoleSupportServiceProvider::class】
           * 这会把命令名称，命名具体类以key,value形式保存在应用容器里的bindings[]栈里
           * function ($artisan) use ($commands) {
              $artisan->resolveCommands($commands);
            }
           * 然后此函数即 protected static $bootstrappers = [function ($artisan) use ($commands) {
          $artisan->resolveCommands($commands);
          }];
           * 便会循环检索栈里的具体命令类更实例化
           * 实例化完成之后，将命令名称，命令对象以key,value保存在Symfony\Component\Console->commands[$command->getName()] = $command;
           * 里
           * laravel是对console【symfony console】做了二次的封装处理，具体使用文档在
           * https://symfony.com/doc/current/components/console.html
           * require __DIR__.'/vendor/autoload.php';
  
             use Symfony\Component\Console\Application;
  
             $application = new Application();
  
              // ... register commands
  
             $application->run();
           */
          $this->bootstrap();
      }

  命令实例化并添加
  

  run command 运行命令

   console Application
  public function run(InputInterface $input = null, OutputInterface $output = null)
      {
          /**
          获取命令名称 要么获取默认的命令，要么获取输入的命令参数
          假设键入的命令是php artisan route:list则该命令会返回route:list 否则返回默认的命名名称
           **/
          $commandName = $this->getCommandName(
              //输入对象  其实也就是 $argv参数的封装对象
              $input = $input ?: new ArgvInput
          );
  
          
          $this->events->fire(
              new Events\CommandStarting(
                  $commandName, $input, $output = $output ?: new ConsoleOutput
              )
          );
  
          //调度 具体文档在 https://symfony.com/doc/current/components/console.html
          //Syfmony/Console/Application->run()
          /**
          require __DIR__.'/vendor/autoload.php';
  
          use Symfony\Component\Console\Application;
  
          $application = new Application();
  
          // ... register commands
  
          $application->run();
           **/
          $exitCode = parent::run($input, $output);
  
          $this->events->fire(
              new Events\CommandFinished($commandName, $input, $output, $exitCode)
          );
  
          return $exitCode;
      }