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rails--rails/lib/active_storage/service/disk_service.rb

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require "fileutils"
require "pathname"
class ActiveStorage::Service::DiskService < ActiveStorage::Service
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CHUNK_SIZE = 65536
attr_reader :root
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def initialize(root:)
@root = root
end
def upload(key, io)
File.open(make_path_for(key), "wb") do |file|
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while chunk = io.read(CHUNK_SIZE)
file.write(chunk)
end
end
end
def download(key)
if block_given?
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File.open(path_for(key)) do |file|
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while data = file.read(CHUNK_SIZE)
yield data
end
end
else
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File.open path_for(key), &:read
end
end
def delete(key)
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File.delete path_for(key) rescue Errno::ENOENT # Ignore files already deleted
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end
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def exist?(key)
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File.exist? path_for(key)
end
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def url(key, expires_in:, disposition:, filename:)
verified_key_with_expiration = ActiveStorage::VerifiedKeyWithExpiration.encode(key, expires_in: expires_in)
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if defined?(Rails) && defined?(Rails.application)
Rails.application.routes.url_helpers.rails_disk_blob_path(verified_key_with_expiration, disposition: disposition)
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else
"/rails/blobs/#{verified_key_with_expiration}?disposition=#{disposition}"
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end
end
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def byte_size(key)
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File.size path_for(key)
end
def checksum(key)
Digest::MD5.file(path_for(key)).hexdigest
end
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private
def path_for(key)
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File.join root, folder_for(key), key
end
def folder_for(key)
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[ key[0..1], key[2..3] ].join("/")
end
def make_path_for(key)
path_for(key).tap { |path| FileUtils.mkdir_p File.dirname(path) }
end
end