public static function grabLinks()
{
$client = new Client();
$baseUrl = 'http://olx.ua/nedvizhimost/cri/?page=%d';
$page = 1;
$retryCount = 5;
do {
$time = time();
$response = null;
try {
$response = $client->get(sprintf($baseUrl, $page++));
} catch (ServerException $e) {
Log::error('OLX server error', ['code' => $e->getCode(), 'message' => $e->getMessage()]);
return;
}
$urls = [];
if ($response) {
$crawler = new Crawler($response->getBody()->getContents());
$urls = array_map(function ($link) {
return preg_replace('/#.*$/', '', $link);
}, $crawler->filter('td.offer a.link')->extract('href'));
}
if (0 === count($urls)) {
Log::info('Grabbed 0 OLX links');
}
$grabbedCount = 0;
$droppedCount = 0;
/** @var Dispatcher $dispatcher */
$dispatcher = app('Illuminate\\Bus\\Dispatcher');
foreach ($urls as $url) {
/** @var GrabbedUrl $grabbedUrl */
$grabbedUrl = GrabbedUrl::where('url', $url)->first();
if ($grabbedUrl) {
/** @var GrabbedUrl $grabbedUrl */
$grabbedUrl->count = $grabbedUrl->count + 1;
$grabbedUrl->save();
$droppedCount++;
} else {
$grabbedUrl = GrabbedUrl::create(['url' => $url]);
$dispatcher->dispatch(new Parse($grabbedUrl));
$grabbedCount++;
}
}
printf('[%d] grabbed: %d, dropped: %d' . PHP_EOL, time() - $time, $grabbedCount, $droppedCount);
} while ($grabbedCount > 0 or $retryCount-- > 0);
}
/**
* Execute the job.
*
* @return void
*/
public function handle(ParserLoggerInterface $logger, Client $client)
{
$context = ['url' => $this->url->url];
try {
$response = $client->get($this->url->url, ['allow_redirects' => false]);
} catch (ClientException $e) {
$logger->error('Client error', self::arrayInsert($context, 'exception', $e));
throw $e;
}
if (200 !== ($code = $response->getStatusCode())) {
switch ($code) {
case 301:
if (preg_match('/from404/', $response->getHeaderLine('Location'))) {
$logger->warning('Offer deleted', $context);
} else {
$grabbedUrl = null;
try {
$grabbedUrl = GrabbedUrl::create(['url' => $response->getHeaderLine('Location')]);
} catch (QueryException $e) {
return;
}
if ($grabbedUrl) {
$this->dispatch(new Parse($grabbedUrl));
$logger->info('Dispatched new job', self::arrayInsert($context, 'new_url', $response->getHeaderLine('Location')));
}
}
return;
default:
$logger->error('Invalid response code ' . $code, $context);
}
}
$responseHtml = $response->getBody()->getContents();
$crawler = new Crawler($responseHtml);
$offer = new Offer();
$offer->href = $this->url->url;
$requiredFieldsCommands = ['phones' => function () use($client) {
return self::getPhones($client, self::getOlxId($this->url->url));
}, 'cat_path' => function () use($responseHtml) {
return self::getCatPath($responseHtml);
}];
foreach ($requiredFieldsCommands as $field => $command) {
try {
$offer->{$field} = $command();
} catch (\Exception $e) {
$logger->error('Unable to extract required fields', self::arrayInsert($context, 'required_field', $field));
throw $e;
}
}
$fieldsCommands = ['price_string' => function () use($crawler) {
return $crawler->filter('.pricelabel.tcenter')->first()->text();
}, 'title' => function () use($crawler) {
return $crawler->filter('.offerheadinner > h1')->text();
}, 'olx_id' => function () {
return self::getOlxId($this->url->url);
}, 'description' => function () use($crawler) {
return $crawler->filter('#textContent')->text();
}, 'date_string' => function () use($crawler) {
return self::getDate($crawler);
}, 'offer_number' => function () use($crawler) {
return self::getOfferNumber($crawler);
}];
$failedFields = [];
foreach ($fieldsCommands as $field => $command) {
try {
$offer->{$field} = trim($command());
} catch (\Exception $e) {
array_push($failedFields, $field);
}
}
$detailsTables = $crawler->filter('table.details table.item');
$details = [];
foreach ($detailsTables as $detailsTable) {
/** @var $detailsTable Crawler */
try {
$details[$detailsTable->getElementsByTagName('th')->item(0)->textContent] = preg_replace('/\\t*|\\n*|\\s{2,}/u', '', $detailsTable->getElementsByTagName('td')->item(0)->textContent);
} catch (\Exception $e) {
array_push($failedFields, $detailsTable->text());
}
}
if ($details) {
$offer->details = $details;
}
if ($failedFields and $failedFields !== ["price_string"]) {
// lots of offers don't have assigned price
$logger->warning('Failed fields', self::arrayInsert($context, 'failed_fields', $failedFields));
}
if ($olxTimestamp = self::parseDate($offer->date_string)) {
$offer->created_at_olx = $olxTimestamp;
}
try {
$offer->save();
} catch (QueryException $e) {
if (23000 === intval($e->getCode())) {
return;
// duplicate offer, finish job
}
$logger->error('', self::arrayInsert($context, 'exception', $e));
throw $e;
}
if ($offer) {
try {
$detectPhones = new DetectPhones($offer);
$detectPhones->handle();
} catch (\Exception $e) {
\Log::critical('Failed to detect phones', ['exception' => $e]);
}
}
if ($offer->wasRecentlyCreated) {
$photos = [];
try {
$photos = $crawler->filter('#bigGallery a')->reduce(function (Crawler $node, $i) {
return (bool) $node->attr('href');
})->extract('href');
} catch (Exception $e) {
$logger->error('Failed to get photos', self::arrayInsert($context, 'exception', $e));
}
if ($photos) {
foreach ($photos as $photo) {
$offer->photos()->create(['url' => $photo]);
}
}
if ($locationString = self::getLocationString($crawler)) {
if ($location = Location::where('location', $locationString)->first()) {
$offer->location()->associate($location);
$offer->save();
} else {
try {
$location = Location::create(['location' => $locationString]);
} catch (QueryException $e) {
$logger->error('Unable to create Location', self::arrayInsert($context, 'location', $locationString));
}
if ($location instanceof Location) {
$offer->location()->associate($location);
$offer->save();
}
}
}
}
Event::fire(new OfferParsed($offer));
}
