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# GOV.UK Mini Environment Admin
# Copyright © 2018 Christopher Baines <mail@cbaines.net>
#
# This file is part of the GOV.UK Mini Environment Admin.
#
# The GOV.UK Mini Environment Admin is free software: you can
# redistribute it and/or modify it under the terms of the GNU Affero
# General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later
# version.
#
# The GOV.UK Mini Environment Admin 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with the GOV.UK Mini Environment Admin. If not, see
# <http://www.gnu.org/licenses/>.
# == Schema Information
#
# Table name: terraform_libvirt_backends
#
# id :integer not null, primary key
# label :string
# uri :string
# created_at :datetime not null
# updated_at :datetime not null
# domain :string
#
require 'ruby_terraform'
class Backends::TerraformLibvirt < ApplicationRecord
has_many :mini_environments, as: :backend
self.table_name = 'terraform_libvirt_backends'
def self.label
'libvirt'
end
def type_and_id
"#{self.class.name}=#{id}"
end
def build(mini_environment)
slug = mini_environment.name.parameterize
GovukGuix::BuildJob.enqueue(
mini_environment.id,
services: %w(whitehall government-frontend),
arguments: {
type: 'vm-image-and-system',
app_domain: "#{slug}.#{domain}",
web_domain: "www.#{slug}.#{domain}",
# Assume that this is a local environment, and not externally
# accessible
use_https: 'development',
http_ports_mode: 'standard',
host_name: "#{slug}.#{domain}",
admin_environment_label: mini_environment.name,
signon_instance_name: slug
}
)
end
def start(mini_environment)
logger.info "Setting up #{mini_environment.name}"
within_terraform_working_directory(mini_environment) do
RubyTerraform.apply(
vars: terraform_variables(mini_environment),
auto_approve: true
)
end
end
def destroy(mini_environment)
within_terraform_working_directory(mini_environment) do
RubyTerraform.destroy(
vars: terraform_variables(mini_environment),
force: true
)
end
end
def deploy_backend
TerraformWorkingDirectory.new(
terraform_state_id,
'terraform/libvirt/backend'
).within_working_directory do
RubyTerraform.apply(
vars: {
uri: uri,
domain: domain
},
auto_approve: true
)
end
end
def terraform_state_id
"backend/terraform_libvirt/#{id}"
end
def within_terraform_working_directory(mini_environment, &block)
TerraformWorkingDirectory.new(
"mini_environment/#{mini_environment.id}",
'terraform/libvirt/mini_environment'
).within_working_directory(&block)
end
def signon_url(mini_environment)
"https://signon.#{mini_environment.name.parameterize}.#{domain}"
end
def terraform_variables(mini_environment)
slug = mini_environment.name.parameterize
{
uri: uri,
machine_name: slug,
host_name: "#{slug}.#{domain}",
vm_image_and_system: mini_environment.backend_data['build_output'],
backend_remote_state_address: (
'http://localhost:3000' +
Rails
.application
.routes
.url_helpers
.terraform_http_backend_path(terraform_state_id)
)
}
end
end
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