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Completed
Push — master ( 4a329e...1320b2 )
by Lukáš
03:00
created

GenerateProxiesCommand::execute()   A

↳ Parent: GenerateProxiesCommand

Complexity

Conditions 2
Paths 2

Size

Total Lines 9
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
c 1
b 0
f 0
dl 0
loc 9
rs 9.6666
cc 2
eloc 5
nc 2
nop 2
1 
<?php
2 
declare(strict_types=1);
3 

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace Lookyman\Nette\Proxy\Console;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Lookyman\Nette\Proxy\DI\ProxyExtension;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Nette\DI\Container;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Symfony\Component\Console\Command\Command;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Symfony\Component\Console\Input\InputInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Symfony\Component\Console\Output\OutputInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class GenerateProxiesCommand extends Command

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	protected function configure()

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		$this->setName('lookyman:nette-proxy:generate')

            


            
                                                                                                            
                            
            
                                    
            
            

                
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			->setDescription('Generate proxies for lazy services');

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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	protected function execute(InputInterface $input, OutputInterface $output)

            


            
                                                        
            
                                    
            
            

                
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	{

            


            
                                                        
            
                                    
            
            

                
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		/** @var Container $container */

            


            
                                                        
            
                                    
            
            

                
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		$container = $this->getHelper('container')->getContainer();

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
0 ignored issues

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                            show
                        


                        

                                                                                        




    

        
            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
It seems like you code against a concrete implementation and not the interface Symfony\Component\Console\Helper\HelperInterface as the method getContainer() does only exist in the following implementations of said interface: Kdyby\Console\ContainerHelper.
                                                                                                                                                                                                        

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s take a look at an example:


interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}





In the above example, the authenticate() method works fine as long as you just pass
instances of MyUser. However, if you now also want to pass a different implementation
of User which does not have a getDisplayName() method, the code will break.




Available Fixes


  1. Change the type-hint for the parameter:
    

    class AuthSystem
{
    public function authenticate(MyUser $user) { /* ... */ }
}

    

    

    2. 

  2. Add an additional type-check:
    

    class AuthSystem
{
    public function authenticate(User $user)
    {
        if ($user instanceof MyUser) {
            $this->logger->info(/** ... */);
        }

        // or alternatively
        if ( ! $user instanceof MyUser) {
            throw new \LogicException(
                '$user must be an instance of MyUser, '
               .'other instances are not supported.'
            );
        }

    }
}

    

    

    3. 




 Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types
inside the if block in such a case.


  1. Add the method to the interface:
    

    interface User
{
    /** @return string */
    public function getPassword();

    /** @return string */
    public function getDisplayName();
}

    

    

    2. 



                        

                                                    

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		foreach (array_keys($container->findByTag(ProxyExtension::TAG_LAZY)) as $name) {

            


            
                                                        
            
                                    
            
            

                
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			$container->getService($name);

            


            
                                                        
            
                                    
            
            

                
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			$output->writeln(sprintf('Proxy for service %s generated', $name));

            


            
                                                        
            
                                    
            
            

                
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		}

            


            
                                                        
            
                                    
            
            

                
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	}

            


            
                                                        
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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