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# GOV.UK Mini Environment Admin
# Copyright © 2018, 2019 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/>.
module Backends::TerraformAwsUsingAmi::BackendMethods
def create_data_snapshot
GovukGuix::CreateDataSnapshotJob.enqueue(
backend_type: self.class.name,
backend_id: id
)
end
def backend_terraform_variables
public_ip_addresses = ENV[
'GOVUK_MINI_ENVIRONMENT_ADMIN_PUBLIC_IP_ADDRESSES'
].split(',')
raise 'missing public ip addresses' if public_ip_addresses.nil?
egress_cidr_blocks = public_ip_addresses.map { |x| "#{x}/32" }
common_terraform_variables.merge(
aws_vpc_id: vpc_id,
ssh_public_key: ssh_public_key,
backend_slug: label.parameterize,
mini_environment_admin_guix_public_key: guix_public_key,
mini_environment_admin_egress_cidr_blocks: egress_cidr_blocks
)
end
def deploy_backend
within_backend_terraform_working_directory do
RubyTerraform.apply(
vars: backend_terraform_variables,
auto_approve: true
)
end
end
def refresh_backend_state
within_backend_terraform_working_directory do
RubyTerraform.refresh(
vars: backend_terraform_variables
)
end
end
def destroy_backend
within_backend_terraform_working_directory do
RubyTerraform.destroy(
vars: backend_terraform_variables,
force: true
)
end
end
def stop_backend
within_backend_terraform_working_directory do
RubyTerraform.destroy(
vars: backend_terraform_variables,
target: 'aws_spot_instance_request.main',
force: true
)
end
end
def in_use_store_paths
[
GovukGuix::Revision.where(archived: false).pluck(:store_path),
available_data_snapshots.pluck(:store_path),
mini_environments
.where(archived: false)
.pluck(:backend_data)
.map { |x| x&.dig('build_output') }
].flatten.compact
end
def update_guix_gcroots
GovukGuix::UpdateGcrootsDirectory.set_in_use_store_paths(
in_use_store_paths,
run_remotely_on_host: build_remote_host
)
end
def add_in_use_store_path(store_path)
GovukGuix::UpdateGcrootsDirectory.add_store_path(
store_path,
run_remotely_on_host: build_remote_host
)
end
def within_backend_terraform_working_directory(&block)
with_advisory_lock(
"terraform"
) do
TerraformWorkingDirectory.new(
terraform_state_id,
'terraform/aws_using_ami/backend'
).within_working_directory(&block)
end
end
def available_data_snapshots
GovukGuix::DataSnapshot.where(backend: self)
end
def backend_terraform_states
TerraformState.where(
state_id: terraform_state_id
)
end
def backend_latest_terraform_state
backend_terraform_states.order(:id).last
end
def status
latest_terraform_state = backend_terraform_states.order(:id).last
running = (
latest_terraform_state &&
(latest_terraform_state.output_value('backend_up') == 'true')
)
{
running: running,
updated_at: latest_terraform_state.try(:created_at)
}
end
end
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