I am using the Rails console to move some files from one site to another.
Inside a loop, I use the technique* advised in the Paperclip wiki to set the
remote_url of the attachment to the correct URL, and then call save on the
model, which copies the file over and runs it through the various
resize/transcode steps defined in my attachment. Unfortunately, this does not
seem to clean up after itself correctly, and I end up with a zillion files in
the temp folder, and yesterday the server ran out of free space and stopped
working.
I used ensure to clean up, but that's not a very friendly solution except when
nobody else is using the server.
Asset.current.where('assets.id > 31061').find_each do |a|
begin
# raw_file on the remote site returns a string with the URL of the file on
S3
a.blob_remote_url = open("http://example.org/assets/#{a.id}/raw_file";).read
a.save
rescue
a.destroy
ensure
FileUtils.rm Dir.glob('/tmp/*.jpg')
FileUtils.rm Dir.glob('/tmp/*.JPG')
FileUtils.rm Dir.glob('/tmp/*.mov')
FileUtils.rm Dir.glob('/tmp/*.MOV')
FileUtils.rm Dir.glob('/tmp/*.mp4')
FileUtils.rm Dir.glob('/tmp/open-uri*')
end
end
Inside the Paperclip gem, the URI adapter uses open-uri and the open call to
get a handle on the remote file, and since it's used inside a block, that
handle should collapse when the request is done and be garbage collected. I
don't see where the temp file is being created, or why it lingers.
Is the issue because I am inside an irb loop? Does that have some separate
context that prevents garbage collection?
Thanks,
Walter
*https://github.com/thoughtbot/paperclip/wiki/Attachment-downloaded-from-a-URL
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