<?php
/*
 * Copyright 2012-2014 Rackspace US, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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.
 */

require dirname(__DIR__) . '/../vendor/autoload.php';

use OpenCloud\Rackspace;
use OpenCloud\Common\Constants\Datetime;

$client = new Rackspace('{authUrl}', array(
    'username' => '{username}',
    'apiKey'   => '{apiKey}',
));

$service = $client->queuesService(null, '{region}');

// You MUST set a client ID before executing any operation. This ID must be a
// valid UUID. The SDK can set a random UUID for you if you don't want to
// define your own, just leave the argument empty.
$service->setClientId();

// Get your queue
$queue = $service->getQueue('{queueName}');

// Claim messages that fall under a few conditions: limit the claim size to 15,
// set the grace and TTL period to 5 minutes. These are just examples and may
// be replaced.
$messages = $queue->claimMessages(array(
    'limit' => 15,
    'grace' => 5 * Datetime::MINUTE,
    'ttl'   => 5 * Datetime::MINUTE
));

// Iterate over your claimed messages in order to perform computation on them.
foreach ($messages as $message) {
    /** @var OpenCloud\Queues\Resource\Message */
}