openproject/config/unicorn.rb

#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2018 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) 2006-2017 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.
#++

worker_processes Integer(ENV['WEB_CONCURRENCY'] || 2)
timeout Integer(ENV['WEB_TIMEOUT'] || 300)
preload_app true

# Preloading the unicorn server to have all workers spawn the application
# automatically.
#
# Borrows heavily from https://www.digitalocean.com/community/tutorials/how-to-optimize-unicorn-workers-in-a-ruby-on-rails-app
#
# This method requires ActiveRecord to close and re-establish its connection in the slaves,
# because the connection is not properly shared with them.
#
# If you use any other service, you'll need to add them to these _fork blocks to close
# and reopen sockets when forking.
# (except Dalli/Memcache store, which detects  automatically)
before_fork do |_server, _worker|
  if defined?(ActiveRecord::Base)
    ActiveRecord::Base.connection.disconnect!
  end
end

after_fork do |_server, _worker|
  if defined?(ActiveRecord::Base)
    ActiveRecord::Base.establish_connection
  end
end