I have some objects in a Google Cloud Storage bucket that are publicly downloadable on URLs like https://storage.googleapis.com/blahblahblah. I want to set up a monitoring rule that lets me see how often one of these objects is being downloaded. I have turned on the Data Read audit log as mentioned here, but I don't see any logs when I download the object from the storage.googleapis.com link. I have another bucket where downloads are performed through the Node Google Cloud Storage client library, and I can see download logs from that bucket, so it seems like downloads from the public URL don't get logged.
I also don't see a way to specify the object in a particular bucket when setting up an alert in Google Cloud. Is creating a new bucket solely for this object the best way to try to set up monitoring for the number of downloads, or is there something I'm missing here?
