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<?php |
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namespace Famdirksen\LaravelJobHandler\Http\Controllers; |
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use Carbon\Carbon; |
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use Famdirksen\LaravelJobHandler\Exceptions\CrawlerException; |
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use Famdirksen\LaravelJobHandler\Exceptions\CrawlerNotReachedTimeBetweenJobsException; |
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use Famdirksen\LaravelJobHandler\Exceptions\CrawlerSaveException; |
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use Famdirksen\LaravelJobHandler\Models\Crawlers; |
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use Famdirksen\LaravelJobHandler\Models\CrawlerStatus; |
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use Famdirksen\LaravelJobHandler\Models\CrawlerStatusLogs; |
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use Illuminate\Support\Facades\Log; |
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class CrawlController |
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{ |
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protected $crawler; |
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protected $crawler_id; |
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protected $override_fail_status = false; |
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protected $logging = false; |
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protected $logs = []; |
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public function __construct() |
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{ |
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$this->startLogging(); |
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} |
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public function __destruct() |
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{ |
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$this->stopLogging(); |
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} |
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public function overrideFailStatus(bool $state) |
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{ |
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$this->log('Setup overrideFailStatus to: '.$state); |
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$this->override_fail_status = $state; |
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} |
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/** |
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* Get the latest crawler data from the database |
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*/ |
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protected function getCrawler() |
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{ |
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if (empty($this->crawler) || $this->crawler->id != $this->crawler_id) { |
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$this->log('Loading new crawler data'); |
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$this->crawler = Crawlers::findOrFail($this->crawler_id); |
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$this->log('Loaded new crawler data'); |
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} else { |
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$this->log('Refreshing crawler data'); |
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$this->crawler = $this->crawler->fresh(); |
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$this->log('Refreshed crawler data'); |
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} |
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} |
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/** |
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* Set the crawler id |
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* |
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* @param $crawler_id |
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*/ |
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public function setCrawlerId($crawler_id) |
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{ |
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$this->log('Setting crawler_id'); |
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$this->crawler_id = $crawler_id; |
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$this->log('Set crawler_id'); |
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} |
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/** |
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* Return the crawler id |
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* |
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* @return mixed |
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*/ |
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public function getCrawlerId() |
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{ |
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$this->log('Getting crawler_id'); |
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return $this->crawler_id; |
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} |
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/** |
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* Check if the controller is setup correctly |
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* |
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* @return bool |
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*/ |
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protected function controllerIsSetup() |
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{ |
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$this->log('Check if controllerIsSetup'); |
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if (!is_null($this->crawler_id)) { |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Setup the crawler so it won't run twice at the same time |
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* |
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* @param $crawler_id |
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*/ |
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public function setupCrawler($crawler_id = null) |
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{ |
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$this->log('Setup crawler'); |
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if (!is_null($crawler_id)) { |
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$this->log('Setup crawler, crawler_id is not set'); |
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$this->setCrawlerId($crawler_id); |
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} |
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if ($this->controllerIsSetup()) { |
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$times = config('laravel-job-handler.run_times', 10); |
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for ($x = 0; $x <= $times; $x++) { |
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//fetch the last data |
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$this->getCrawler(); |
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$this->log('Checking if crawler is enabled'); |
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if (!$this->crawler->enabled) { |
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$this->log('Crawler is not enabled'); |
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throw new CrawlerException('Crawler (#' . $this->crawler_id . ') - crawler isnt enabled in database'); |
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} |
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$this->log('Checking if crawler can be runned'); |
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$checkIfCrawlerCanBeRunned = $this->canCrawlerRunAfterPeriod(); |
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if ($checkIfCrawlerCanBeRunned['status']) { |
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$this->log('Checked if crawler can runned'); |
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if (is_null($this->crawler->latest_status)) { |
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$this->log('Crawler can be runned, it the first time'); |
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//first time it runs... |
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break; |
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} |
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if ($this->crawler->latest_status == 2) { |
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$this->log('Crawler can be runned, last crawler runned successfully'); |
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//Done running... |
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break; |
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} |
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if ($this->crawler->latest_status == 3) { |
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if ($this->override_fail_status) { |
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$this->log('Last crawler failed, but it is forced to run'); |
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//override the failed state, this will force to rerun... |
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break; |
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} |
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$this->log('Last crawler failed, force run is not enabled'); |
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throw new CrawlerException('Crawler (#' . $this->crawler_id . ') - last run had an error and override_fail_status is not enabled'); |
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} |
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} else { |
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$this->log('Crawler needs to wait ('.$checkIfCrawlerCanBeRunned['retry_in'].' seconds) before running again'); |
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throw new CrawlerNotReachedTimeBetweenJobsException('Has to wait ' . $checkIfCrawlerCanBeRunned['retry_in'] . ' more seconds to run'); |
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} |
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if ($x == $times && !$this->override_fail_status) { |
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$this->log('Crawler exceeded the max execution time'); |
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$this->failCrawler('Crawler (#' . $this->crawler_id . ') - max execution time'); |
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} |
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if ($this->crawler->status == 1) { |
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if ($this->crawler->multiple_crawlers) { |
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$this->log('Crawler can run multiple crawlers at the same time'); |
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break; |
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} |
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$wait = config('laravel-job-handler.retry_in_seconds', 3); |
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$this->log('Waiting for rechecking ('.$wait.' seconds) if crawler can be runned'); |
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sleep($wait); |
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} |
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} |
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$this->log('All setup, starting crawler'); |
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$this->startCrawler(); |
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} else { |
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throw new CrawlerException('CrawlController is not setup correctly.'); |
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} |
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} |
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/** |
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* Start the crawler and save it to the database |
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* |
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* @param string $output |
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*/ |
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public function startCrawler($output = '') |
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{ |
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$this->log('Starting crawler'); |
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return $this->addStatus(1, $output); //start running |
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} |
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/** |
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* set the crawler as done so other scripts can run |
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* |
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* @param string $output |
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*/ |
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public function doneCrawler($output = '') |
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{ |
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$this->log('Crawler done'); |
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return $this->addStatus(2, $output); //done running |
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} |
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/** |
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* Finishing the crawler |
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* |
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* @param string $output |
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* @return bool |
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*/ |
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public function finish($output = '') |
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{ |
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$this->log('Finishing crawler'); |
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return $this->doneCrawler($output); |
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} |
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/** |
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* crawler failed... |
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* |
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* @param string $output |
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*/ |
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public function failCrawler($output = '') |
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{ |
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$this->log('Crawler failed'); |
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$this->addStatus(3, $output); //failed |
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throw new CrawlerException($output.' - status 3'); |
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} |
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/** |
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* Save the latest crawler status to the database |
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* |
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* @param $status |
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* @param string $output |
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* @return bool |
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*/ |
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protected function addStatus($status, $output = '') |
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{ |
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$this->log('Registering status ('.$status.')'); |
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$crawlerstatus = new CrawlerStatus(); |
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$crawlerstatus->crawler_id = $this->crawler_id; |
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$crawlerstatus->status = $status; |
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if ($crawlerstatus->save()) { |
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$this->log('Registered status ('.$status.')'); |
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if ($this->crawler) { |
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$this->log('Setting crawler latest status (' . $status . ') attribute'); |
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$this->crawler->latest_status = $status; |
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$this->crawler->save(); |
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$this->log('Set crawler latest status (' . $status . ') attribute'); |
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} |
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if (!empty($output)) { |
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$formatted_logs[] = [ |
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'status_id' => $crawlerstatus->id, |
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'output' => $output, |
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'created_at' => Carbon::now(), |
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'updated_at' => Carbon::now(), |
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]; |
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CrawlerStatusLogs::insert($formatted_logs); |
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} |
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if ($status == 2) { |
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$this->stopLogging($crawlerstatus->id); |
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} |
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$this->getCrawler(); |
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return true; |
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} else { |
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throw new CrawlerSaveException('Cannot save crawlerstatus to database...'); |
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} |
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} |
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protected function saveLog($crawlerstatus_id) |
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{ |
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$formatted_logs = []; |
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foreach ($this->logs as $log) { |
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$formatted_logs[] = [ |
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'status_id' => $crawlerstatus_id, |
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'output' => $log, |
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'created_at' => Carbon::now(), |
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'updated_at' => Carbon::now(), |
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]; |
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} |
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if (count($formatted_logs) > 0) { |
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$this->log('Registering crawler logs'); |
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CrawlerStatusLogs::insert($formatted_logs); |
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$this->log('Registered crawler logs (count: ' . count($formatted_logs) . ')'); |
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} else { |
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$this->log('Log output is not set, skipping inserting'); |
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} |
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} |
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/** |
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* This will define when the job can be runned again |
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* |
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* @return array |
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*/ |
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public function canCrawlerRunAfterPeriod() |
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310
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{ |
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$this->getCrawler(); |
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313
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if (is_null($this->crawler->time_between)) { |
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$this->log('Not a time_between specified'); |
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return $this->canCrawlerRunAfterPeriodStatus(true); |
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} else { |
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$seconds = $this->crawler->time_between; |
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} |
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320
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321
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if (!is_null($this->crawler->last_runned_at)) { |
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322
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if ($this->crawler->last_runned_at <= Carbon::now()->subSeconds($seconds)) { |
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323
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return $this->canCrawlerRunAfterPeriodStatus(true); |
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324
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} |
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325
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326
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return $this->canCrawlerRunAfterPeriodStatus(false, Carbon::parse($this->crawler->last_runned_at)->diffInSeconds(Carbon::now()->subSeconds($seconds))); |
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327
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} else { |
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//crawler never runned, so it can run now |
|
329
|
|
|
return $this->canCrawlerRunAfterPeriodStatus(true); |
|
330
|
|
|
} |
|
331
|
|
|
} |
|
332
|
|
|
|
|
333
|
|
|
/** |
|
334
|
|
|
* Return the status for canCrawlerRunAfterPeriod method |
|
335
|
|
|
* |
|
336
|
|
|
* @param $status |
|
337
|
|
|
* @param int $retry_in |
|
338
|
|
|
* @return array |
|
339
|
|
|
*/ |
|
340
|
|
|
public function canCrawlerRunAfterPeriodStatus($status, $retry_in = 0) |
|
341
|
|
|
{ |
|
342
|
|
|
return [ |
|
343
|
|
|
'status' => $status, |
|
344
|
|
|
'retry_in' => $retry_in |
|
345
|
|
|
]; |
|
346
|
|
|
} |
|
347
|
|
|
|
|
348
|
|
|
|
|
349
|
|
|
|
|
350
|
|
|
protected function startLogging() |
|
351
|
|
|
{ |
|
352
|
|
|
$this->logging = true; |
|
353
|
|
|
$this->log('Started logging'); |
|
354
|
|
|
} |
|
355
|
|
|
protected function stopLogging($crawlerstatus_id = null) |
|
356
|
|
|
{ |
|
357
|
|
|
$this->log('Stop logging'); |
|
358
|
|
|
$this->logging = false; |
|
359
|
|
|
|
|
360
|
|
|
if (!is_null($crawlerstatus_id)) { |
|
361
|
|
|
$this->saveLog($crawlerstatus_id); |
|
362
|
|
|
} |
|
363
|
|
|
} |
|
364
|
|
|
protected function log($item = '') |
|
365
|
|
|
{ |
|
366
|
|
|
if ($this->logging) { |
|
367
|
|
|
$log = $item.' (crawler_id: '.$this->crawler_id.')'; |
|
368
|
|
|
|
|
369
|
|
|
$this->logs[] = $log; |
|
370
|
|
|
Log::debug($log); |
|
371
|
|
|
} |
|
372
|
|
|
} |
|
373
|
|
|
} |
|
374
|
|
|
|