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Push — master ( d038b0...9c4c41 )
by Constantin
03:11
created

InMemoryStateManager::updateState()   A

↳ Parent: InMemoryStateManager

Complexity

Conditions 1
Paths 1

Size

Total Lines 10
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 6
CRAP Score 1

Importance

Changes 0
Metric Value
dl 0
loc 10
c 0
b 0
f 0
ccs 6
cts 6
cp 1
rs 9.4285
cc 1
eloc 5
nc 1
nop 2
crap 1
1 
<?php
2 
/**
3 
 * Copyright (c) 2017 Constantin Galbenu <[email protected]>
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 */
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namespace Gica\Cqrs\Saga\State;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class InMemoryStateManager implements ProcessStateLoader, ProcessStateUpdater

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    private $states = [];

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function loadState(string $stateClass, $stateId)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $key = $stateClass . $stateId;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        if (isset($this->states[$key])) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            return $this->states[$key];

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return new $stateClass;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    public function updateState($stateId, callable $updater)

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        $stateClass = $this->getStateClass($updater);

            


            
                                                                        
                            
            
                                    
            
            

                
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        $state = call_user_func($updater, $this->loadState($stateClass, $stateId));

            


            
                                                                        
                            
            
                                    
            
            

                
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        $key = $stateClass . $stateId;

            


            
                                                                        
                            
            
                                    
            
            

                
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        $this->states[$key] = $state;

            


            
                                                                        
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    private function getStateClass(callable $update): string

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $reflection = new \ReflectionFunction($update);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        if ($reflection->getNumberOfParameters() <= 0) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            throw new \Exception("Updater callback must have one type-hinted parameter");

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return $reflection->getParameters()[0]->getClass()->name;

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    }

            


            
                                                        
            
                                    
            
            

                
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}