| 1 |  |  | <?php namespace AdammBalogh\KeyValueStore\Adapter\SharedMemoryAdapter; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | use AdammBalogh\KeyValueStore\Adapter\Util; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  | use AdammBalogh\KeyValueStore\Exception\KeyNotFoundException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * @SuppressWarnings(PHPMD.UnusedFormalParameter) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | trait ValueTrait | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |      * Gets the value of a key. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |      * @param string $key | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |      * @return mixed The value of the key. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |      * @throws KeyNotFoundException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |      * @throws \Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |     public function get($key) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |         return $this->getValue($key); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |      * Sets the value of a key. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |      * @param string $key | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |      * @param mixed $value Can be any of serializable data type. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      * @return bool True if the set was successful, false if it was unsuccessful. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |      * @throws \Exception | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 35 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 36 |  |  |     public function set($key, $value) | 
            
                                                                        
                            
            
                                    
            
            
                | 37 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 38 |  |  |         if (!$this->shmProxy->put($this->client, $key, $value)) { | 
                            
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                | 39 |  |  |             throw new \Exception('Shm put error'); | 
            
                                                                        
                            
            
                                    
            
            
                | 40 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 41 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 42 |  |  |         return true; | 
            
                                                                        
                            
            
                                    
            
            
                | 43 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |      * Gets value, watches expiring. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |      * @param string $key | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |      * @throws KeyNotFoundException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |      * @throws \Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     protected function getValue($key) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |         if (!$this->shmProxy->has($this->client, $key)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |             throw new KeyNotFoundException(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |         $getResult = $this->shmProxy->get($this->client, $key); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |         $unserialized = @unserialize($getResult); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |         if (Util::hasInternalExpireTime($unserialized)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |             $this->handleTtl($key, $unserialized['ts'], $unserialized['s']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |             $getResult = $unserialized['v']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |         return $getResult; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |      * If ttl is lesser or equals 0 delete key. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |      * @param string $key | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |      * @param int $expireSetTs | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |      * @param int $expireSec | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |      * @return int ttl | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |      * @throws KeyNotFoundException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |      * @throws \Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |     protected function handleTtl($key, $expireSetTs, $expireSec) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |         $ttl = $expireSetTs + $expireSec - time(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |         if ($ttl <= 0) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |             if (!$this->shmProxy->remove($this->client, $key)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |                 throw new \Exception('Shm remove error'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |             throw new KeyNotFoundException(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |         return $ttl; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 98 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 99 |  |  |  | 
            
                        
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: