OpenProject is the leading open source project management software.
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openproject/app/uploaders/fog_file_uploader.rb

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#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2021 the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# See docs/COPYRIGHT.rdoc for more details.
#++
require 'carrierwave/storage/fog'
class FogFileUploader < CarrierWave::Uploader::Base
include FileUploader
storage :fog
# Delete cache and old rack file after store
# cf. https://github.com/carrierwaveuploader/carrierwave/wiki/How-to:-Delete-cache-garbage-directories
before :store, :remember_cache_id
after :store, :delete_tmp_dir
after :store, :delete_old_tmp_file
def copy_to(attachment)
attachment.remote_file_url = remote_file.url
end
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
def remote_file
@remote_file || file
end
def local_file
@remote_file ||= file
cache_stored_file!
super
end
##
# This is necessary for carrierwave to set the Content-Type in the S3 metadata for instance.
def fog_attributes
content_type = model.respond_to?(:content_type) ? model.content_type : ""
return super if content_type.blank?
super.merge "Content-Type": content_type
end
##
# Generates a download URL for this file.
#
# @param options [Hash] Options hash.
# @option options [String] :content_disposition Pass this content disposition to S3 so that it serves the file with it.
# @option options [DateTime] :expires_at Date at which the link should expire (default: now + 5 minutes)
# @option options [ActiveSupport::Duration] :expires_in Duration in which the link should expire.
#
# @return [String] The URL to download the file from.
def download_url(options = {})
url_options = {}
set_content_disposition! url_options, options: options
set_expires_at! url_options, options: options
remote_file.url url_options
end
##
# Checks if this file exists and is readable in the remote storage.
#
# In the current version of carrierwave the call to #exists?
# throws an error if the file does not exist:
#
# Excon::Errors::Forbidden: Expected(200) <=> Actual(403 Forbidden)
def readable?
remote_file&.exists?
rescue Excon::Errors::Forbidden
false
end
private
def set_content_disposition!(url_options, options:)
if options[:content_disposition].present?
url_options[:query] = {
# Passing this option to S3 will make it serve the file with the
# respective content disposition. Without it no content disposition
# header is sent. This only works for S3 but we don't support
# anything else anyway (see carrierwave.rb).
"response-content-disposition" => options[:content_disposition]
}
end
end
def set_expires_at!(url_options, options:)
if options[:expires_in].present?
expires = [options[:expires_in], OpenProject::Configuration.fog_download_url_expires_in].min
url_options[:expire_at] = ::Fog::Time.now + expires
end
if options[:expires_at].present?
url_options[:expire_at] = ::Fog::Time.at options[:expires_at] - ::Fog::Time.offset
end
end
end