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#
# Copyright:: Copyright (c) 2012 Opscode, Inc.
# Copyright:: Copyright (c) 2014 GitLab.com
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

gitlab_rails_source_dir = "/opt/gitlab/embedded/service/gitlab-rails"
gitlab_rails_dir = node['gitlab']['gitlab-rails']['dir']
gitlab_rails_etc_dir = File.join(gitlab_rails_dir, "etc")
gitlab_rails_working_dir = File.join(gitlab_rails_dir, "working")
gitlab_rails_tmp_dir = File.join(gitlab_rails_dir, "tmp")
gitlab_rails_public_uploads_dir = node['gitlab']['gitlab-rails']['uploads_directory']
gitlab_rails_log_dir = node['gitlab']['gitlab-rails']['log_directory']

[
  gitlab_rails_dir,
  gitlab_rails_etc_dir,
  gitlab_rails_working_dir,
  gitlab_rails_tmp_dir,
  gitlab_rails_public_uploads_dir,
  node['gitlab']['gitlab-rails']['backup_path'],
  gitlab_rails_log_dir
].each do |dir_name|
  directory dir_name do
    owner node['gitlab']['user']['username']
    mode '0700'
    recursive true
  end
end

dependent_services = []
dependent_services << "service[unicorn]" if OmnibusHelper.should_notify?("unicorn")
dependent_services << "service[sidekiq]" if OmnibusHelper.should_notify?("sidekiq")

redis_not_listening = OmnibusHelper.not_listening?("redis")
postgresql_not_listening = OmnibusHelper.not_listening?("postgresql")

template_symlink File.join(gitlab_rails_etc_dir, "secret") do
  link_from File.join(gitlab_rails_source_dir, ".secret")
  source "secret_token.erb"
  owner "root"
  group "root"
  mode "0644"
  restarts dependent_services
end

database_attributes = node['gitlab']['gitlab-rails'].to_hash
if node['gitlab']['postgresql']['enable']
  database_attributes.merge!(
    :db_adapter => "postgresql",
    :db_username => node['gitlab']['postgresql']['sql_user'],
    :db_password => node['gitlab']['postgresql']['sql_password'],
    :db_host => node['gitlab']['postgresql']['listen_address'],
    :db_port => node['gitlab']['postgresql']['port']
  )
end

template_symlink File.join(gitlab_rails_etc_dir, "database.yml") do
  link_from File.join(gitlab_rails_source_dir, "config/database.yml")
  source "database.yml.erb"
  owner "root"
  group "root"
  mode "0644"
  variables database_attributes
  helpers SingleQuoteHelper
  restarts dependent_services
end

template_symlink File.join(gitlab_rails_etc_dir, "resque.yml") do
  link_from File.join(gitlab_rails_source_dir, "config/resque.yml")
  source "resque.yml.erb"
  owner "root"
  group "root"
  mode "0644"
  restarts dependent_services
end

template_symlink File.join(gitlab_rails_etc_dir, "aws.yml") do
  link_from File.join(gitlab_rails_source_dir, "config/aws.yml")
  owner "root"
  group "root"
  mode "0644"
  variables(node['gitlab']['gitlab-rails'].to_hash)
  restarts dependent_services

  unless node['gitlab']['gitlab-rails']['aws_enable']
    action :delete
  end
end

template_symlink File.join(gitlab_rails_etc_dir, "smtp_settings.rb") do
  link_from File.join(gitlab_rails_source_dir, "config/initializers/smtp_settings.rb")
  owner "root"
  group "root"
  mode "0644"
  variables(node['gitlab']['gitlab-rails'].to_hash)
  restarts dependent_services

  unless node['gitlab']['gitlab-rails']['smtp_enable']
    action :delete
  end
end

template_symlink File.join(gitlab_rails_etc_dir, "gitlab.yml") do
  link_from File.join(gitlab_rails_source_dir, "config/gitlab.yml")
  source "gitlab.yml.erb"
  helpers SingleQuoteHelper
  owner "root"
  group "root"
  mode "0644"
  variables(node['gitlab']['gitlab-rails'].to_hash)
  restarts dependent_services
  unless redis_not_listening
    notifies :run, 'execute[clear the gitlab-rails cache]'
  end
end

template_symlink File.join(gitlab_rails_etc_dir, "rack_attack.rb") do
  link_from File.join(gitlab_rails_source_dir, "config/initializers/rack_attack.rb")
  source "rack_attack.rb.erb"
  owner "root"
  group "root"
  mode "0644"
  variables(node['gitlab']['gitlab-rails'].to_hash)
  restarts dependent_services
end

directory node['gitlab']['gitlab-rails']['satellites_path'] do
  owner node['gitlab']['user']['username']
  group node['gitlab']['user']['group']
  mode "0750"
  recursive true
end

# replace empty directories in the Git repo with symlinks to /var/opt/gitlab
{
  "/opt/gitlab/embedded/service/gitlab-rails/tmp" => gitlab_rails_tmp_dir,
  "/opt/gitlab/embedded/service/gitlab-rails/public/uploads" => gitlab_rails_public_uploads_dir,
  "/opt/gitlab/embedded/service/gitlab-rails/log" => gitlab_rails_log_dir
}.each do |link_dir, target_dir|
  link link_dir do
    to target_dir
  end
end

# Make schema.rb writable for when we run `rake db:migrate`
file "/opt/gitlab/embedded/service/gitlab-rails/db/schema.rb" do
  owner node['gitlab']['user']['username']
end

# Only run `rake db:migrate` when the gitlab-rails version has changed
remote_file File.join(gitlab_rails_dir, 'VERSION') do
  source "file:///opt/gitlab/embedded/service/gitlab-rails/VERSION"
  notifies :run, 'execute[migrate database]' unless postgresql_not_listening
  notifies :run, 'execute[clear the gitlab-rails cache]' unless redis_not_listening
end

execute "chown -R #{node['gitlab']['user']['username']} /opt/gitlab/embedded/service/gitlab-rails/public"

execute "clear the gitlab-rails cache" do
  command "/opt/gitlab/bin/gitlab-rake cache:clear"
  action :nothing
end