Get S3 Object Metadata from Post or Attachment ID

Hey Jon,

First a little bit of info that’ll help you in the future. At time of offload, you can tell WP Offload Media to include some extra files that aren’t part of the normal Media Library metadata (sizes) by using the as3cf_attachment_file_paths filter.

There’s an example in our Tweaks Plugin.

https://github.com/deliciousbrains/wp-amazon-s3-and-cloudfront-tweaks/blob/beb2e0f1bba71be7b462a60209e5ff630a57437e/amazon-s3-and-cloudfront-tweaks.php#L708

When you use that filter, any time files are uploaded to the bucket, downloaded from the bucket, or removed from the bucket, the extra files are included in the action if appropriate.

In fact, if you implement that filter even now, after the items have already been offloaded, you may still be able to get WP Offload Media to remove those extra files from the bucket when a Media Library item is deleted. But that does depend on whether you’ve already added them to the same bucket path as the known Media Library files.

Now to your actual question. Probably the simplest method to get a Media Library item’s remote URL is with the global function:

$url = as3cf_get_attachment_url( $post_id );

You can then just pull apart the URL to get the bits you want with the standard parse_url function.

-IJ

Thanks, IJ, for the detailed info and that function.

It’s saved me quite a bit of time coding.

Have a good one.

Jon