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<?php
/**
* Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
namespace Aws\S3\Sync;
use Aws\S3\S3Client;
use Guzzle\Common\AbstractHasDispatcher;
use Guzzle\Common\Collection;
use Guzzle\Iterator\ChunkedIterator;
use Guzzle\Service\Command\CommandInterface;
abstract class AbstractSync extends AbstractHasDispatcher
{
const BEFORE_TRANSFER = 's3.sync.before_transfer';
const AFTER_TRANSFER = 's3.sync.after_transfer';
/** @var Collection */
protected $options;
/**
* @param array $options Associative array of options:
* - client: (S3Client) used to transfer requests
* - bucket: (string) Amazon S3 bucket
* - iterator: (\Iterator) Iterator that yields SplFileInfo objects to transfer
* - source_converter: (FilenameConverterInterface) Converter used to convert filenames
* - *: Any other options required by subclasses
*/
public function __construct(array $options)
{
$this->options = Collection::fromConfig(
$options,
array('concurrency' => 10),
array('client', 'bucket', 'iterator', 'source_converter')
);
$this->init();
}
public static function getAllEvents()
{
return array(self::BEFORE_TRANSFER, self::AFTER_TRANSFER);
}
/**
* Begin transferring files
*/
public function transfer()
{
// Pull out chunks of uploads to upload in parallel
$iterator = new ChunkedIterator($this->options['iterator'], $this->options['concurrency']);
foreach ($iterator as $files) {
$this->transferFiles($files);
}
}
/**
* Create a command or special transfer action for the
*
* @param \SplFileInfo $file File used to build the transfer
*
* @return CommandInterface|callable
*/
abstract protected function createTransferAction(\SplFileInfo $file);
/**
* Hook to initialize subclasses
* @codeCoverageIgnore
*/
protected function init() {}
/**
* Process and transfer a group of files
*
* @param array $files Files to transfer
*/
protected function transferFiles(array $files)
{
// Create the base event data object
$event = array('sync' => $this, 'client' => $this->options['client']);
$commands = array();
foreach ($files as $file) {
if ($action = $this->createTransferAction($file)) {
$event = array('command' => $action, 'file' => $file) + $event;
$this->dispatch(self::BEFORE_TRANSFER, $event);
if ($action instanceof CommandInterface) {
$commands[] = $action;
} elseif (is_callable($action)) {
$action();
$this->dispatch(self::AFTER_TRANSFER, $event);
}
}
}
$this->transferCommands($commands);
}
/**
* Transfer an array of commands in parallel
*
* @param array $commands Commands to transfer
*/
protected function transferCommands(array $commands)
{
if ($commands) {
$this->options['client']->execute($commands);
// Notify listeners that each command finished
$event = array('sync' => $this, 'client' => $this->options['client']);
foreach ($commands as $command) {
$event['command'] = $command;
$this->dispatch(self::AFTER_TRANSFER, $event);
}
}
}
}
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