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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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class CrawlController |
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{ |
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protected $crawler; |
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protected $crawler_id; |
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/** |
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* Get the latest crawler data from the database |
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*/ |
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protected function getCrawler() |
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{ |
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if(empty($this->crawler) || $this->crawler->id != $this->crawler_id) { |
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$this->crawler = Crawlers::findOrFail($this->crawler_id); |
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} else { |
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$this->crawler = $this->crawler->fresh(); |
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} |
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} |
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public function setCrawlerId($crawler_id) { |
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$this->crawler_id = $crawler_id; |
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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) |
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{ |
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$this->setCrawlerId($crawler_id); |
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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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if (!$this->crawler->enabled) { |
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throw new CrawlerException('Crawler (#' . $this->crawler_id . ') - crawler isnt enabled in database'); |
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} |
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$checkIfCrawlerCanBeRunned = $this->canCrawlerRunAfterPeriod(); |
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if($checkIfCrawlerCanBeRunned['status']) { |
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if (is_null($this->crawler->latest_status)) { |
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//first time it runs... |
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break; |
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} |
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if ($this->crawler->latest_status == 2) { |
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//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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throw new CrawlerException('Crawler (#' . $this->crawler_id . ') - last run had an error'); |
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} |
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} else { |
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throw new CrawlerNotReachedTimeBetweenJobsException('Has to wait '.$checkIfCrawlerCanBeRunned['retry_in'].' more seconds to run'); |
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} |
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if ($x == $times) { |
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$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 ($this->crawler->multiple_crawlers) { |
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break; |
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} |
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sleep(config('laravel-job-handler.retry_in_seconds', 3)); //retry in 3 seconds |
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} |
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} |
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$this->startCrawler(); |
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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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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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return $this->addStatus(2, $output); //done running |
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} |
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public function finish($output = '') |
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{ |
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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->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, $output = '') |
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{ |
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$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->crawler->latest_status = $status; |
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$this->crawler->save(); |
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if (!empty($output)) { |
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$crawlerstatuslog = new CrawlerStatusLogs(); |
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$crawlerstatuslog->status_id = $crawlerstatus->id; |
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$crawlerstatuslog->output = $output; |
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$crawlerstatuslog->save(); |
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} |
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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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/** |
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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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$this->getCrawler(); |
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if(is_null($this->crawler->time_between)) { |
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return $this->canCrawlerRunAfterPeriodStatus(true); |
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} else { |
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$seconds = $this->crawler->time_between; |
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} |
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if(!is_null($this->crawler->last_runned_at)) { |
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if ($this->crawler->last_runned_at <= Carbon::now()->subSeconds($seconds)) { |
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return $this->canCrawlerRunAfterPeriodStatus(true); |
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} |
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return $this->canCrawlerRunAfterPeriodStatus(false, Carbon::parse($this->crawler->last_runned_at)->diffInSeconds(Carbon::now()->subSeconds($seconds))); |
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} else { |
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//crawler never runned, so it can run now |
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return $this->canCrawlerRunAfterPeriodStatus(true); |
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} |
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} |
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public function canCrawlerRunAfterPeriodStatus($status, $retry_in = 0) { |
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return [ |
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'status' => $status, |
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'retry_in' => $retry_in |
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]; |
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} |
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} |
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Famdirksen /
LaravelJobHandler
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Checks if undeclared accessed properties appear in database migrations and if the creating migration is correct.