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openproject/db/migrate/migration_utils/yaml_migrator.rb

67 lines
2.4 KiB

#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2014 the OpenProject Foundation (OPF)
#
# 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 doc/COPYRIGHT.rdoc for more details.
#++
require_relative 'db_worker'
require 'syck'
module Migration
module YamlMigrator
include DbWorker
def migrate_yaml(table, column, source_yamler, target_yamler)
current_yamler = YAML::ENGINE.yamler
fetch_data(table,column).each do | data |
db_execute <<-SQL
UPDATE #{quoted_table_name(table)}
SET #{db_column(column)} = #{quote_value(yaml_to_yaml(data[column],source_yamler, target_yamler))}
WHERE id = #{data['id']};
SQL
end
ensure
# psych is the default starting at ruby 1.9.3, so we explicitely set it here
# in case no yamler was set to return to a sensible default
YAML::ENGINE.yamler = current_yamler.present? ? current_yamler : 'psych'
end
def fetch_data(table, column)
ActiveRecord::Base.connection.select_all <<-SQL
SELECT #{db_column('id')}, #{db_column(column)}
FROM #{quoted_table_name(table)}
WHERE #{db_column(column)} LIKE #{quote_value('---%')}
SQL
end
def yaml_to_yaml(data, source_yamler, target_yamler)
YAML::ENGINE.yamler = source_yamler
original = YAML.load(data)
YAML::ENGINE.yamler = target_yamler
YAML.dump original
end
end
end