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112 lines
4.0 KiB
112 lines
4.0 KiB
#-- encoding: UTF-8
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#-- copyright
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# OpenProject is a project management system.
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# Copyright (C) 2012-2014 the OpenProject Foundation (OPF)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2013 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See doc/COPYRIGHT.rdoc for more details.
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#++
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namespace :migrations do
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desc "Use FROM environment variable to define a timezone to migrate from.
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Examples: LOCAL (PostgreSQL), SYSTEM (MySQL), 'Europe/Berlin' (PostgreSQL), Europe/Berlin (MySQL)
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(Note the quotes in the different examples)"
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task :change_timestamps_to_utc => :environment do |task|
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def postgres?
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@postgres ||= ActiveRecord::Base.connection.instance_values["config"][:adapter] == "postgresql"
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end
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def mysql?
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@mysql ||= ActiveRecord::Base.connection.instance_values["config"][:adapter] == "mysql2"
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end
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raise "Error: Adapting Timestamps from system timezone to UTC is only supported for " +
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"postgres and mysql yet." unless postgres? || mysql?
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def readOldTimezone
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if postgres?
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@old_timezone = ActiveRecord::Base.connection.select_all(
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"SELECT current_setting('timezone') AS timezone").first['timezone']
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end
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end
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def setFromTimezone
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if postgres?
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from_timezone = ENV['FROM'] || 'LOCAL'
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ActiveRecord::Base.connection.execute "SET TIME ZONE #{from_timezone}"
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elsif mysql?
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converted_time = ActiveRecord::Base.connection.select_all( \
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"SELECT CONVERT_TZ('2013-11-06 15:13:42', 'SYSTEM', 'UTC')").first.values.first
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if converted_time.nil?
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raise <<-error
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Error: timezone information has not been loaded into mysql, please execute
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mysql_tzinfo_to_sql <path-to-zoneinfo> | mysql -u root mysql
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Hint: a likely location of <path-to-zoneinfo> is /usr/share/zoneinfo
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see: http://dev.mysql.com/doc/refman/5.0/en/mysql-tzinfo-to-sql.html
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error
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end
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end
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end
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def setOldTimezone
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if postgres?
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ActiveRecord::Base.connection.execute "SET TIME ZONE #{@old_timezone}"
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end
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end
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def getQueries
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if postgres?
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ActiveRecord::Base.connection.select_all <<-SQL
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select 'UPDATE ' || table_name || ' SET ' || column_name || ' = ' || column_name || '::timestamptz at time zone ''utc'';'
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from information_schema.columns
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where table_schema='public'
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and data_type like 'timestamp without time zone'
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SQL
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elsif mysql?
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from_timezone = ENV['FROM'] || 'SYSTEM'
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ActiveRecord::Base.connection.select_all <<-SQL
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select concat('UPDATE ',table_name, ' SET ', column_name, ' = CONVERT_TZ(', column_name, ', \\'#{from_timezone}\\', \\'UTC\\');')
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from information_schema.columns
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where table_schema = '#{ActiveRecord::Base.connection.current_database}' and data_type like 'datetime'
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SQL
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end
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end
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readOldTimezone
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begin
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setFromTimezone
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getQueries.each do |statement|
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ActiveRecord::Base.connection.execute statement.values.first
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end
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ensure
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setOldTimezone
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end
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end
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end
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