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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of the AntiMattr MongoDB Migrations Library, a library by Matthew Fitzgerald.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (c) 2014 Matthew Fitzgerald  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace AntiMattr\MongoDB\Migrations\Collection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Exception;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MongoDB\Collection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use MongoDB\Database;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Matthew Fitzgerald <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Statistics  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const COUNT = 'count';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const SIZE = 'size';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const AVG_OBJ_SIZE = 'avgObjSize';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const STORAGE_SIZE = 'storageSize';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const NUM_EXTENTS = 'numExtents';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const NINDEXES = 'nindexes';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const LAST_EXTENT_SIZE = 'lastExtentSize';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const PADDING_FACTOR = 'paddingFactor';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const TOTAL_INDEX_SIZE = 'totalIndexSize';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static $metrics = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::COUNT,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::SIZE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::AVG_OBJ_SIZE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::STORAGE_SIZE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::NUM_EXTENTS,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::NINDEXES,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::LAST_EXTENT_SIZE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::PADDING_FACTOR,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::TOTAL_INDEX_SIZE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \MongoDB\Collection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $collection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $before = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $after = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setDatabase(Database $database)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->database = $database;  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \MongoDB\Collection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setCollection(Collection $collection)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->collection = $collection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \MongoDB\Collection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getCollection()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->collection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function updateBefore()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $data = $this->getCollectionStats();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($data as $key => $value) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (in_array($key, static::$metrics)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->before[$key] = $value;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getBefore()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->before;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function updateAfter()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $data = $this->getCollectionStats();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($data as $key => $value) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (in_array($key, static::$metrics)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->after[$key] = $value;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getAfter()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->after;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \Exception  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    protected function getCollectionStats()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $name = $this->collection->getCollectionName();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!$data = $this->database->command(['collStats' => $name])) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $message = sprintf(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'Statistics not found for collection %s',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $name  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            throw new Exception($message);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $data;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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