#
# Cookbook:: kosmos-postgresql
# Recipe:: default
#
# The MIT License (MIT)
#
# Copyright:: 2019, Kosmos Developers
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

postgresql_version = "12"
postgresql_service = "postgresql@#{postgresql_version}-main"

postgresql_custom_server postgresql_version do
  role "primary"
end

service postgresql_service do
  supports restart: true, status: true, reload: true
  action [:enable]
end

# This will only be run once, if the /var/lib/postgresql/10/main directory
# exists. The old data directory is then moved.
execute "upgrade postgresql to 12" do
  command <<-EOF
systemctl stop postgresql@12-main
systemctl stop postgresql@10-main
su - postgres -c "/usr/lib/postgresql/12/bin/pg_upgrade --old-bindir=/usr/lib/postgresql/10/bin/ --new-bindir=/usr/lib/postgresql/12/bin/ --old-datadir=/etc/postgresql/10/main/ --new-datadir=/etc/postgresql/12/main/"
mv /var/lib/postgresql/10/main /var/lib/postgresql/10/main.old
systemctl start postgresql@12-main
  EOF
  only_if { ::File.exist? "/var/lib/postgresql/10/main" }
end

postgresql_replicas.each do |replica|
  postgresql_access "#{replica[:hostname]} replication" do
    access_type "host"
    access_db "replication"
    access_user "replication"
    access_addr "#{replica[:ipaddress]}/32"
    access_method "md5"
    notifies :reload, "service[#{postgresql_service}]", :immediately
  end

  unless node.chef_environment == "development"
    include_recipe "firewall"

    firewall_rule "postgresql replica #{replica[:hostname]}" do
      port        5432
      protocol    :tcp
      command     :allow
      source replica[:ipaddress]
    end
  end
end