76 lines
2.2 KiB
PHP
76 lines
2.2 KiB
PHP
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<?php
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namespace Guzzle\Batch;
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use Guzzle\Batch\BatchTransferInterface;
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use Guzzle\Batch\BatchDivisorInterface;
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use Guzzle\Common\Exception\InvalidArgumentException;
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use Guzzle\Service\Command\CommandInterface;
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use Guzzle\Service\Exception\InconsistentClientTransferException;
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/**
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* Efficiently transfers multiple commands in parallel per client
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* This class is to be used with {@see Guzzle\Batch\BatchInterface}
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*/
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class BatchCommandTransfer implements BatchTransferInterface, BatchDivisorInterface
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{
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/** @var int Size of each command batch */
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protected $batchSize;
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/**
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* @param int $batchSize Size of each batch
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*/
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public function __construct($batchSize = 50)
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{
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$this->batchSize = $batchSize;
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}
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/**
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* Creates batches by grouping commands by their associated client
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* {@inheritdoc}
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*/
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public function createBatches(\SplQueue $queue)
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{
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$groups = new \SplObjectStorage();
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foreach ($queue as $item) {
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if (!$item instanceof CommandInterface) {
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throw new InvalidArgumentException('All items must implement Guzzle\Service\Command\CommandInterface');
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}
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$client = $item->getClient();
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if (!$groups->contains($client)) {
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$groups->attach($client, new \ArrayObject(array($item)));
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} else {
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$groups[$client]->append($item);
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}
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}
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$batches = array();
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foreach ($groups as $batch) {
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$batches = array_merge($batches, array_chunk($groups[$batch]->getArrayCopy(), $this->batchSize));
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}
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return $batches;
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}
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public function transfer(array $batch)
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{
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if (empty($batch)) {
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return;
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}
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// Get the client of the first found command
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$client = reset($batch)->getClient();
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// Keep a list of all commands with invalid clients
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$invalid = array_filter($batch, function ($command) use ($client) {
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return $command->getClient() !== $client;
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});
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if (!empty($invalid)) {
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throw new InconsistentClientTransferException($invalid);
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}
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$client->execute($batch);
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}
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}
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