允许用户将MP3上传到Amazon S3

Question

I’m working on a website where users can upload podcasts. Podcasts are to be MP3 files, and stored in an Amazon S3 bucket.

What is the normal flow for this? I’ve Googled, but any articles relating to file uploads tend to be using the Amazon client libraries, and ideally I don’t want to use PHP (I’m using the LAMP stack) for uploading an MP3 file due to timeouts, file size limits etc.

Is there a way around this?

Answer 1

After lots of Googling, and back-and-forth on both the GitHub repository and Amazon documentation for the new PHP SDK, I’ve got a solution using Amazon’s new PHP SDK to generate the form fields, and Uploadify to actually upload the file directly to Amazon, bypassing my server. The code looks a little like this:

<?php
$bucket = (string) $container['config']->images->amazon->bucket;
$options = array(
    'acl' => CannedAcl::PUBLIC_READ,
    'Content-Type' => 'audio/mpeg',
    'key' => 'audio/a-test-podcast.mp3',
    'success_action_redirect' => (string) $container['config']->main->base_url . 'upload/success/',
    'success_action_status' => 201,
    'filename' => '^'
);
$postObject = new PostObject($container['amazon_s3'], $bucket, $options);
$postObject->prepareData();

$formAttributes = $postObject->getFormAttributes();
$formInputs = $postObject->getFormInputs();

$uploadPath = $formAttributes['action'];
?>
<script>
    (function($) {
        $('#podcast').uploadify({
            'buttonClass': 'button',
            'buttonText': 'Upload',
            'formData': <?php echo json_encode($formInputs); ?>,
            'fileObjName': 'file',
            'fileTypeExts': '*.mp3',
            'height': 36,
            'multi': false,
            'onUploadError': function(file, errorCode, errorMsg, errorString) {
                console.log('onUploadError', file, errorCode, errorMsg, errorString);
            },
            'onUploadSuccess': function(file, data, response) {
                console.log('onUploadSuccess', file, data, response);
            },
            'swf': '/assets/cms/swf/uploadify.swf',
            'uploader': '<?php echo $uploadPath; ?>',
            'width': 120
        });
    })(jQuery);
</script>