kanbanworkflowstimelinescrumrubyroadmapproject-planningproject-managementopenprojectangularissue-trackerifcgantt-chartganttbug-trackerboardsbcf
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
2.5 KiB
58 lines
2.5 KiB
#-- encoding: UTF-8
|
|
#-- copyright
|
|
# OpenProject is an open source project management software.
|
|
# Copyright (C) 2012-2020 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) 2006-2017 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.
|
|
#++
|
|
|
|
# We need to ensure that we operate on a well-known TRANSACTION ISOLATION LEVEL
|
|
# However, the default isolation level is different for MySQL and PostgreSQL and it is also
|
|
# possible (at least for MySQL) to globally override the default for your DBMS installation.
|
|
# Therefore we want to ensure that the isolation level is consistent on a session basis.
|
|
# We chose READ COMMITTED as our expected default isolation level, this is the default of
|
|
# PostgreSQL.
|
|
module ConnectionIsolationLevel
|
|
module ConnectionPoolPatch
|
|
def new_connection
|
|
connection = super
|
|
ConnectionIsolationLevel.set_connection_isolation_level connection
|
|
connection
|
|
end
|
|
end
|
|
|
|
def self.set_connection_isolation_level(connection)
|
|
isolation_level = 'ISOLATION LEVEL READ COMMITTED'
|
|
if OpenProject::Database.postgresql?(connection)
|
|
connection.execute("SET SESSION CHARACTERISTICS AS TRANSACTION #{isolation_level}")
|
|
end
|
|
end
|
|
end
|
|
|
|
ActiveRecord::ConnectionAdapters::ConnectionPool.send(:prepend,
|
|
ConnectionIsolationLevel::ConnectionPoolPatch)
|
|
|
|
# in case the existing connection was created before our patch
|
|
# N.B.: this assumes that our process only has this single thread, which is at least true today...
|
|
ConnectionIsolationLevel.set_connection_isolation_level ActiveRecord::Base.connection
|
|
|