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QuestionAskerCommand   A
last analyzed

↳ Parent: Project

Complexity

Total Complexity 2

Size/Duplication

Total Lines 15
Duplicated Lines 0 %

Coupling/Cohesion

Components 0
Dependencies 2

Importance

Changes 0
Metric Value
wmc 2
lcom 0
cbo 2
dl 0
loc 15
rs 10
c 0
b 0
f 0

2 Methods

Rating   Name   Duplication   Size   Complexity  
A configure() 0 6 1
A execute() 0 3 1
1 
<?php
2 

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace Chrl\AppBundle\Command;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Wrep\Daemonizable\Command\EndlessCommand;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Symfony\Component\Console\Output\OutputInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Symfony\Component\Console\Input\InputInterface;

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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class QuestionAskerCommand extends EndlessCommand

            


            
                                                                        
                            
            
                                    
            
            

                
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{

            


            
                                                                        
                            
            
                                    
            
            

                
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    // This is just a normal Command::configure() method

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    protected function configure()

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->setName('buktopuha:questionbot')

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
0 ignored issues

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            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
It seems like you code against a specific sub-type and not the parent class Symfony\Component\Console\Command\Command as the method setTimeout() does only exist in the following sub-classes of Symfony\Component\Console\Command\Command: Chrl\AppBundle\Command\QuestionAskerCommand. Maybe you want to instanceof check for one of these explicitly?
                                                                                                                                                                                                                                                            

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s take a look at an example:


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

class MyUser extends 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 sub-classes
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 parent class:
    

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

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

    

    

    2. 



                        

                                                    

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                ->setDescription('Endless process that monitors time and asks questions')

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                ->setTimeout(1);

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    }

            


            
                                                                        
                            
            
                                    
            
            

                
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    // Execute will be called in a endless loop

            


            
                                                                                                            
                            
            
                                    
            
            

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

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    }

            


            
                                                        
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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