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<?php |
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/* |
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* This file is part of the Veslo project <https://github.com/symfony-doge/veslo>. |
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* |
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* (C) 2019 Pavel Petrov <[email protected]>. |
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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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* @license https://opensource.org/licenses/GPL-3.0 GPL-3.0 |
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*/ |
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declare(strict_types=1); |
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namespace Veslo\AnthillBundle\Vacancy\Parser; |
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use Closure; |
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use Psr\Log\LoggerInterface; |
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use Symfony\Component\Serializer\Normalizer\NormalizerInterface; |
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use Veslo\AnthillBundle\Dto\Vacancy\LocationDto; |
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use Veslo\AnthillBundle\Vacancy\ScannerPool\ConveyorAwareScannerPool; |
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use Veslo\AppBundle\Workflow\Vacancy\PitInterface; |
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use Veslo\AppBundle\Workflow\Vacancy\Worker\Iteration; |
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use Veslo\AppBundle\Workflow\Vacancy\WorkerInterface; |
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/** |
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* TODO: ascii image and descr |
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*/ |
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class Earwig implements WorkerInterface |
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{ |
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/** |
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* Logger as it is |
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* |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* Converts an object into a set of arrays/scalars |
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* |
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* @var NormalizerInterface |
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*/ |
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private $normalizer; |
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/** |
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* Aggregates scanners for vacancy parsing in context of workflow conveyor |
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* |
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* @var ConveyorAwareScannerPool |
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*/ |
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private $scannerPool; |
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/** |
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* Storage for parsed vacancy from website-provider |
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* Destination place in which result of worker action will be persisted |
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* |
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* @var PitInterface |
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*/ |
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private $destination; |
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/** |
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* Earwig constructor. |
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* |
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* @param LoggerInterface $logger Logger as it is |
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* @param NormalizerInterface $normalizer Converts an object into a set of arrays/scalars |
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* @param ConveyorAwareScannerPool $scannerPool Aggregates scanners for vacancy parsing in conveyor context |
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* @param PitInterface $destination Storage for parsed vacancy from website-provider |
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*/ |
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public function __construct( |
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LoggerInterface $logger, |
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NormalizerInterface $normalizer, |
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ConveyorAwareScannerPool $scannerPool, |
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PitInterface $destination |
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) { |
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$this->logger = $logger; |
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$this->normalizer = $normalizer; |
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$this->scannerPool = $scannerPool; |
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$this->destination = $destination; |
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} |
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/** |
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* Performs dung (vacancies) parsing by specified source and attempts count |
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* |
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* @param PitInterface $pit Vacancy URL storage |
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* @param int $iterations Parsing iterations count, at least one expected |
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* |
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* @return int Successful parse iterations count |
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*/ |
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public function parse(PitInterface $pit, int $iterations = 1): int |
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{ |
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$sourceName = get_class($pit); |
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$this->logger->debug('Parsing started.', ['source' => $sourceName, 'iterations' => $iterations]); |
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$iteration = Closure::fromCallable([$this, 'parseIteration']); |
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$iterationLoop = new Iteration\Loop($this, $iteration, 'An error has been occurred during vacancy parsing.'); |
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$successfulIterations = $iterationLoop->execute($pit, $iterations); |
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$this->logger->debug( |
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'Parsing completed.', |
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[ |
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'source' => $sourceName, |
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'iterations' => $iterations, |
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'successful' => $successfulIterations, |
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] |
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); |
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return $successfulIterations; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getLogger(): ?LoggerInterface |
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{ |
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return $this->logger; |
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} |
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/** |
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* Returns positive if vacancy is successfully parsed |
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* Builds and sends a payload to conveyor for further processing according to configured workflow |
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* |
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* @param PitInterface $pit Vacancy URL storage |
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* |
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* @return bool Positive, if vacancy data has been successfully parsed, negative otherwise |
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*/ |
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private function parseIteration(PitInterface $pit): bool |
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{ |
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$sourceName = get_class($pit); |
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/** @var LocationDto $location */ |
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$location = $pit->poll(); |
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if (!$location instanceof LocationDto) { |
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$this->logger->debug( |
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'No more vacancies to parse.', |
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[ |
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'source' => $sourceName, |
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'input' => gettype($location), |
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] |
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); |
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return false; |
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} |
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$scanner = $this->scannerPool->requireByLocation($location); |
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$scanResult = $scanner->scan($location); |
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$scanResultNormalized = $this->normalizer->normalize($scanResult); |
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$this->logger->info('Vacancy parsed.', ['source' => $sourceName, 'data' => $scanResultNormalized]); |
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$this->destination->offer($scanResult); |
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return true; |
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} |
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} |
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symfony-doge /
veslo
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