#
# Cookbook:: kosmos_postgresql
# Recipe:: replica
#

postgresql_custom_server postgresql_version do
  role "replica"
end

postgresql_data_bag_item = data_bag_item('credentials', 'postgresql')

primary = postgresql_primary

if primary.nil?
  Chef::Log.warn("No PostgreSQL primary node found. Skipping replication setup.")
  return
end

# TODO Replace pg.kosmos.local with private IP once available
# via proper node attribute
# https://gitea.kosmos.org/kosmos/chef/issues/263
execute "set up replication" do
  command <<-EOF
systemctl stop #{postgresql_service}
mv #{postgresql_data_dir} #{postgresql_data_dir}.old
pg_basebackup -h pg.kosmos.local -U replication -D #{postgresql_data_dir} -R
chown -R postgres:postgres #{postgresql_data_dir}
systemctl start #{postgresql_service}
  EOF
  environment 'PGPASSWORD' => postgresql_data_bag_item['replication_password']
  sensitive true
  not_if { ::File.exist? "#{postgresql_data_dir}/standby.signal" }
end