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<?php |
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namespace Colligator\Jobs; |
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use Colligator\Collection; |
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use DateTime; |
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use Illuminate\Foundation\Bus\DispatchesJobs; |
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use Log; |
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use Phpoaipmh\Client; |
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use Phpoaipmh\Endpoint; |
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use Phpoaipmh\Exception\OaipmhException; |
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use Phpoaipmh\Granularity; |
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use Storage; |
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class OaiPmhHarvest extends Job |
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{ |
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use DispatchesJobs; |
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public $name; |
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public $url; |
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public $schema; |
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public $set; |
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public $start; |
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public $until; |
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public $resume; |
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public $maxRetries; |
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public $sleepTimeOnError; |
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/** |
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* Start time for the full harvest. |
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* |
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* @var float |
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*/ |
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protected $startTime; |
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/** |
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* Start time for the current batch. |
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* |
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* @var float |
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*/ |
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protected $batchTime; |
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/** |
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* Harvest position. |
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* |
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* @var int |
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*/ |
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protected $batchPos = 0; |
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/** |
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* @var Collection |
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*/ |
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public $collection; |
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/** |
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* Number of records retrieved between each emitted OaiPmhHarvestStatus event. |
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* A too small number will cause CPU overhead. |
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* |
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* @var int |
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*/ |
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protected $statusUpdateEvery = 50; |
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/** |
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* Create a new job instance. |
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* |
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* @param string $name Harvest name from config |
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* @param array $config Harvest config array (url, set, schema) |
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* @param DateTime $start Start date (optional) |
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* @param DateTime $until End date (optional) |
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* @param string $resume Resumption token for continuing an aborted harvest (optional) |
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*/ |
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public function __construct($name, $config, DateTime $start = null, DateTime $until = null, $resume = null) |
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{ |
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$this->name = $name; |
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$this->url = $config['url']; |
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$this->schema = $config['schema']; |
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$this->set = $config['set']; |
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$this->start = $start; |
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$this->until = $until; |
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$this->resume = $resume; |
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$this->maxRetries = array_get($config, 'max-retries', 1000); |
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$this->sleepTimeOnError = array_get($config, 'sleep-time-on-error', 60); |
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} |
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public function fromNetwork() |
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{ |
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$client = new Client($this->url); |
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$endpoint = new Endpoint($client,Granularity::DATE); |
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$recordsHarvested = 0; |
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// Loop over all records using an iterator that pulls in more data when |
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// the buffer is exhausted. |
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foreach ($endpoint->listRecords($this->schema, $this->start, $this->until, $this->set, $this->resume) as $record) { |
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++$recordsHarvested; |
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$this->dispatch(new ImportRecord($this->collection, $record->asXML())); |
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if ($recordsHarvested % $this->statusUpdateEvery == 0) { |
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$this->status($recordsHarvested, $recordsHarvested); |
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} |
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} |
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return $recordsHarvested; |
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} |
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/** |
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* Execute the job. |
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*/ |
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public function handle() |
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{ |
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Log::info('[OaiPmhHarvest] Starting job. Requesting records from ' . ($this->start ?: '(no limit)') . ' until ' . ($this->until ?: '(no limit)') . '.'); |
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// For timing |
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$this->startTime = $this->batchTime = microtime(true) - 1; |
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$this->collection = Collection::where('name', '=', $this->name)->first(); |
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if (is_null($this->collection)) { |
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$this->error("Collection '$this->name' not found in DB"); |
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return; |
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} |
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try { |
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$recordsHarvested = $this->fromNetwork(); |
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Log::info('[OaiPmhHarvest] Harvest complete, got ' . $recordsHarvested . ' records.'); |
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} catch (OaipmhException $e) { |
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Log::warning('[OaiPmhHarvest] Harvest stopped with error ' . $e->getCode() . ': ' . $e->getMessage()); |
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} |
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} |
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/** |
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* Output a status message. |
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* |
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* @param int $fetched |
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* @param int $current |
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*/ |
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public function status($fetched, $current) |
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{ |
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$totalTime = microtime(true) - $this->startTime; |
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$batchTime = microtime(true) - $this->batchTime; |
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$mem = round(memory_get_usage() / 1024 / 102.4) / 10; |
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$currentSpeed = ($fetched - $this->batchPos) / $batchTime; |
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$avgSpeed = $fetched / $totalTime; |
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$this->batchTime = microtime(true); |
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$this->batchPos = $fetched; |
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Log::debug(sprintf( |
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'[OaiPmhHarvest] Got %d records so far - Recs/sec: %.1f (current), %.1f (avg) - Mem: %.1f MB.', |
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$current, |
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$currentSpeed, |
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$avgSpeed, |
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$mem |
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)); |
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} |
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} |
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scriptotek /
colligator-backend
