discourse/lib/file_store/local_store.rb

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require 'file_store/base_store'
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module FileStore
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class LocalStore < BaseStore
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def store_upload(file, upload)
path = get_path_for_upload(file, upload)
store_file(file, path)
end
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def store_optimized_image(file, optimized_image)
path = get_path_for_optimized_image(file, optimized_image)
store_file(file, path)
end
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def store_avatar(file, avatar, size)
path = get_path_for_avatar(file, avatar, size)
store_file(file, path)
end
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def remove_upload(upload)
remove_file(upload.url)
end
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def remove_optimized_image(optimized_image)
remove_file(optimized_image.url)
end
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def has_been_uploaded?(url)
is_relative?(url) || is_local?(url)
end
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def absolute_base_url
"#{Discourse.base_url_no_prefix}#{relative_base_url}"
end
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def relative_base_url
"/uploads/#{RailsMultisite::ConnectionManagement.current_db}"
end
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def external?
!internal?
end
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def internal?
true
end
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def path_for(upload)
"#{public_dir}#{upload.url}"
end
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def avatar_template(avatar)
relative_avatar_template(avatar)
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end
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def purge_tombstone(grace_period)
`find #{tombstone_dir} -mtime +#{grace_period} -type f -delete`
end
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private
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def get_path_for_upload(file, upload)
unique_sha1 = Digest::SHA1.hexdigest("#{Time.now.to_s}#{file.original_filename}")[0..15]
extension = File.extname(file.original_filename)
clean_name = "#{unique_sha1}#{extension}"
# path
"#{relative_base_url}/#{upload.id}/#{clean_name}"
end
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def get_path_for_optimized_image(file, optimized_image)
# 1234567890ABCDEF_100x200.jpg
filename = [
optimized_image.sha1[6..15],
"_#{optimized_image.width}x#{optimized_image.height}",
optimized_image.extension,
].join
# path
"#{relative_base_url}/_optimized/#{optimized_image.sha1[0..2]}/#{optimized_image.sha1[3..5]}/#{filename}"
end
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def get_path_for_avatar(file, avatar, size)
relative_avatar_template(avatar).gsub("{size}", size.to_s)
end
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def relative_avatar_template(avatar)
File.join(
relative_base_url,
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"avatars",
avatar.sha1[0..2],
avatar.sha1[3..5],
avatar.sha1[6..15],
"{size}#{avatar.extension}"
)
end
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def store_file(file, path)
# copy the file to the right location
copy_file(file, "#{public_dir}#{path}")
# url
"#{Discourse.base_uri}#{path}"
end
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def copy_file(file, path)
FileUtils.mkdir_p(Pathname.new(path).dirname)
# move the file to the right location
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# not using mv, cause permissions are no good on move
File.open(path, "wb") { |f| f.write(file.read) }
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end
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def remove_file(url)
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return unless is_relative?(url)
path = public_dir + url
tombstone = public_dir + url.gsub("/uploads/", "/tombstone/")
FileUtils.mkdir_p(Pathname.new(tombstone).dirname)
FileUtils.move(path, tombstone)
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rescue Errno::ENOENT
# don't care if the file isn't there
end
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def is_relative?(url)
url.start_with?(relative_base_url)
end
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def is_local?(url)
absolute_url = url.start_with?("//") ? SiteSetting.scheme + ":" + url : url
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absolute_url.start_with?(absolute_base_url) || absolute_url.start_with?(absolute_base_cdn_url)
end
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def absolute_base_cdn_url
"#{Discourse.asset_host}#{relative_base_url}"
end
def public_dir
"#{Rails.root}/public"
end
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def tombstone_dir
public_dir + relative_base_url.gsub("/uploads/", "/tombstone/")
end
end
end