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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Nexcess.net Turpentine Extension for Magento  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (C) 2012  Nexcess.net L.L.C.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This program is free software; you can redistribute it and/or modify  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * it under the terms of the GNU General Public License as published by  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * the Free Software Foundation; either version 2 of the License, or  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (at your option) any later version.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This program is distributed in the hope that it will be useful,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * but WITHOUT ANY WARRANTY; without even the implied warranty of  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * GNU General Public License for more details.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * You should have received a copy of the GNU General Public License along  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * with this program; if not, write to the Free Software Foundation, Inc.,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Nexcessnet_Turpentine_Model_Observer_Cron extends Varien_Event_Observer { | 
            
                            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Max time to crawl URLs if max_execution_time is 0 (unlimited) in seconds  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var int  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const MAX_CRAWL_TIME = 300;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Amount of time of execution time to leave for other cron processes  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var int  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const EXEC_TIME_BUFFER = 15;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Crawl available URLs in the queue until we get close to max_execution_time  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * (up to MAX_CRAWL_TIME)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  Varien_Object $eventObject  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return null  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function crawlUrls($eventObject) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $helper = Mage::helper('turpentine/cron'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($helper->getCrawlerEnabled()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $maxRunTime = $helper->getAllowedRunTime();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($maxRunTime === 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $maxRunTime = self::MAX_CRAWL_TIME;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $batchSize = $helper->getCrawlerBatchSize();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $timeout = $helper->getCrawlerWaitPeriod();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $crawlCount = 0;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            // just in case we have a silly short max_execution_time  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $maxRunTime = abs($maxRunTime - self::EXEC_TIME_BUFFER);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            while (($helper->getRunTime() < $maxRunTime) &&  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $url = $helper->getNextUrl()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                if ( ! $this->_crawlUrl($url)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    Mage::helper('turpentine/debug')->logWarn( | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        'Failed to crawl URL: %s', $url );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                if ($crawlCount > 0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    && $timeout > 0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    && $batchSize > 0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    && $crawlCount%$batchSize == 0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    Mage::helper('turpentine/debug')->logDebug('Crawled '.$crawlCount.' urls, sleeping for '.$timeout.' seconds'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    sleep($timeout);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $crawlCount++;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Queue all URLs  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  Varien_Object $eventObject  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return null  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function queueAllUrls($eventObject) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $helper = Mage::helper('turpentine/cron'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if ($helper->getCrawlerEnabled()) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $helper->addUrlsToCrawlerQueue($helper->getAllUrls());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Request a single URL, returns whether the request was successful or not  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  string $url  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function _crawlUrl($url) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $client = Mage::helper('turpentine/cron')->getCrawlerClient(); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $client->setUri($url);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Mage::helper('turpentine/debug')->logDebug('Crawling URL: %s', $url); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $response = $client->request();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } catch (Exception $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            Mage::helper('turpentine/debug')->logWarn( | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Error crawling URL (%s): %s',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $url, $e->getMessage() );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $response->isSuccessful();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.