Support 'Stopping' the AWS backend

Which means just destroying the build machine.

1 files changed, 13 insertions, 0 deletions

diff --git a/app/models/backends/terraform_aws/backend_methods.rb b/app/models/backends/terraform_aws/backend_methods.rb
index f8338a4..89509bd 100644
--- a/app/models/backends/terraform_aws/backend_methods.rb
+++ b/app/models/backends/terraform_aws/backend_methods.rb
@@ -78,6 +78,19 @@ module Backends::TerraformAws::BackendMethods
     end
   end
 
+  def stop_backend
+    TerraformWorkingDirectory.new(
+      terraform_state_id,
+      'terraform/aws/backend'
+    ).within_working_directory do
+      RubyTerraform.destroy(
+        vars: backend_terraform_variables,
+        target: 'aws_spot_instance_request.main',
+        force: true
+      )
+    end
+  end
+
   def available_data_snapshots
     GovukGuix::DataSnapshot.where(backend: self)
   end