1 files changed, 75 insertions, 0 deletions
diff --git a/apps/files_external/3rdparty/aws-sdk-php/Guzzle/Batch/BatchCommandTransfer.php b/apps/files_external/3rdparty/aws-sdk-php/Guzzle/Batch/BatchCommandTransfer.php
new file mode 100644
index 00000000000..d55ac7d1f32
--- /dev/null
+++ b/apps/files_external/3rdparty/aws-sdk-php/Guzzle/Batch/BatchCommandTransfer.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Guzzle\Batch;
+
+use Guzzle\Batch\BatchTransferInterface;
+use Guzzle\Batch\BatchDivisorInterface;
+use Guzzle\Common\Exception\InvalidArgumentException;
+use Guzzle\Service\Command\CommandInterface;
+use Guzzle\Service\Exception\InconsistentClientTransferException;
+
+/**
+ * Efficiently transfers multiple commands in parallel per client
+ * This class is to be used with {@see Guzzle\Batch\BatchInterface}
+ */
+class BatchCommandTransfer implements BatchTransferInterface, BatchDivisorInterface
+{
+    /** @var int Size of each command batch */
+    protected $batchSize;
+
+    /**
+     * @param int $batchSize Size of each batch
+     */
+    public function __construct($batchSize = 50)
+    {
+        $this->batchSize = $batchSize;
+    }
+
+    /**
+     * Creates batches by grouping commands by their associated client
+     * {@inheritdoc}
+     */
+    public function createBatches(\SplQueue $queue)
+    {
+        $groups = new \SplObjectStorage();
+        foreach ($queue as $item) {
+            if (!$item instanceof CommandInterface) {
+                throw new InvalidArgumentException('All items must implement Guzzle\Service\Command\CommandInterface');
+            }
+            $client = $item->getClient();
+            if (!$groups->contains($client)) {
+                $groups->attach($client, new \ArrayObject(array($item)));
+            } else {
+                $groups[$client]->append($item);
+            }
+        }
+
+        $batches = array();
+        foreach ($groups as $batch) {
+            $batches = array_merge($batches, array_chunk($groups[$batch]->getArrayCopy(), $this->batchSize));
+        }
+
+        return $batches;
+    }
+
+    public function transfer(array $batch)
+    {
+        if (empty($batch)) {
+            return;
+        }
+
+        // Get the client of the first found command
+        $client = reset($batch)->getClient();
+
+        // Keep a list of all commands with invalid clients
+        $invalid = array_filter($batch, function ($command) use ($client) {
+            return $command->getClient() !== $client;
+        });
+
+        if (!empty($invalid)) {
+            throw new InconsistentClientTransferException($invalid);
+        }
+
+        $client->execute($batch);
+    }
+}