27 lines
827 B
Ruby
27 lines
827 B
Ruby
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# frozen_string_literal: true
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# License: AGPL-3.0-or-later WITH Web-Template-Output-Additional-Permission-3.0-or-later
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module ChunkedUploader
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# Copy a string using chunks instead of all as one string. This is useful reducing memory usage when you want to do a huge export
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#
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# This code copies each chunk to a tempfile and then opens the tempfile and passes the IO object to the block
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# @param [Enumerable<String>] chunk_enum an enumerable of strings.
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# @block accepts an IO for passing to upload
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def self.upload(chunk_enum, &block)
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file_name = File.join(Dir.tmpdir, SecureRandom.uuid)
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File.open(file_name, 'w') do |file|
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chunk_enum.each do |chunk|
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file.write(chunk)
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end
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end
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File.open(file_name, 'r') do |file|
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yield(file)
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end
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File.delete(file_name)
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end
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end
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