Add terraform backend and initial guix configuration

13 files changed, 137 insertions, 6 deletions

diff --git a/.gitignore b/.gitignore
index 68bdf90..4c26e9e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,5 @@
 /yarn-error.log
 
 .byebug_history
+
+.terraform
diff --git a/app/controllers/terraform_http_backend_controller.rb b/app/controllers/terraform_http_backend_controller.rb
new file mode 100644
index 0000000..6b94d8d
--- /dev/null
+++ b/app/controllers/terraform_http_backend_controller.rb
@@ -0,0 +1,25 @@
+class TerraformHttpBackendController < ApplicationController
+  skip_before_action :verify_authenticity_token
+
+  def create
+    TerraformState.create(data: params)
+
+    render json: '{ "success": true }', status: 200
+  end
+
+  def show
+    state = TerraformState.last
+
+    if state.nil?
+      render json: '{}', status: 404
+    else
+      render json: state.data, status: 200
+    end
+  end
+
+  def destroy
+    TerraformState.delete_all
+
+    render json: '{ "success": true }', status: 200
+  end
+end
diff --git a/app/jobs/setup_job.rb b/app/jobs/setup_job.rb
index c7b1b80..6b4f9fe 100644
--- a/app/jobs/setup_job.rb
+++ b/app/jobs/setup_job.rb
@@ -1,5 +1,24 @@
+require 'ruby_terraform'
+
 class SetupJob < TerraformJob
   def run_terraform
     puts "Setting up #{@mini_environment.name}"
+
+    RubyTerraform.init(
+      source: 'terraform/aws',
+      path: 'terraform/aws',
+      backend: true,
+      backend_config: {
+        address: 'http://localhost:3000' + Rails.application.routes.url_helpers.terraform_http_backend_path
+      }
+    )
+
+    RubyTerraform.apply(
+      directory: 'terraform/aws', 
+      vars: {
+        slug: @mini_environment.name.parameterize
+      },
+      auto_approve: true
+    )
   end
 end
diff --git a/app/models/mini_environment.rb b/app/models/mini_environment.rb
index d53a8b1..2d6d8ae 100644
--- a/app/models/mini_environment.rb
+++ b/app/models/mini_environment.rb
@@ -1,3 +1,7 @@
 class MiniEnvironment < ApplicationRecord
   has_many :finished_terraform_jobs, dependent: :destroy
+
+  def enqueued_terraform_jobs
+    Que.execute("SELECT * FROM que_jobs WHERE args->>0 = '#{id}'")
+  end
 end
diff --git a/app/models/terraform_state.rb b/app/models/terraform_state.rb
new file mode 100644
index 0000000..fe1d364
--- /dev/null
+++ b/app/models/terraform_state.rb
@@ -0,0 +1,2 @@
+class TerraformState < ApplicationRecord
+end
diff --git a/app/views/mini_environments/show.html.erb b/app/views/mini_environments/show.html.erb
index 2d8988c..5b2199e 100644
--- a/app/views/mini_environments/show.html.erb
+++ b/app/views/mini_environments/show.html.erb
@@ -1,6 +1,18 @@
 <h1>Name: <%= @mini_environment.name %></h1>
 
+<h2>Finished jobs</h2>
+
 <% @mini_environment.finished_terraform_jobs.each do |job| %>
   <%= job.job_class %>
   <%= job.created_at %>
 <% end %>
+
+<h2>Enqueued jobs</h2>
+
+<% @mini_environment.enqueued_terraform_jobs.each do |job| %>
+  <%= job['job_class'] %>
+
+  <pre>
+    <%= job['last_error'] %>
+  </pre>
+<% end %>
diff --git a/config/initializers/que.rb b/config/initializers/que.rb
new file mode 100644
index 0000000..b9e5a68
--- /dev/null
+++ b/config/initializers/que.rb
@@ -0,0 +1 @@
+Que.mode = :off
diff --git a/config/routes.rb b/config/routes.rb
index 2296683..0dcd800 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,5 +1,9 @@
 Rails.application.routes.draw do
   root :to => 'mini_environments#index'
 
-  resources :mini_environments, :path => '/'
+  resource :terraform_http_backend,
+           controller: :terraform_http_backend,
+           except: %i[new edit update]
+
+  resources :mini_environments, path: '/'
 end
diff --git a/db/migrate/20180128125638_create_terraform_states.rb b/db/migrate/20180128125638_create_terraform_states.rb
new file mode 100644
index 0000000..1882af9
--- /dev/null
+++ b/db/migrate/20180128125638_create_terraform_states.rb
@@ -0,0 +1,9 @@
+class CreateTerraformStates < ActiveRecord::Migration[5.1]
+  def change
+    create_table :terraform_states do |t|
+      t.json :data
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 70325bb..a20083e 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180127222948) do
+ActiveRecord::Schema.define(version: 20180128125638) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -45,6 +45,12 @@ ActiveRecord::Schema.define(version: 20180127222948) do
     t.text "queue", default: "", null: false
   end
 
+  create_table "terraform_states", force: :cascade do |t|
+    t.json "data"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "users", force: :cascade do |t|
     t.string "name"
     t.string "email"
diff --git a/guix.scm b/guix.scm
new file mode 100644
index 0000000..332ed1e
--- /dev/null
+++ b/guix.scm
@@ -0,0 +1,38 @@
+(use-modules (guix packages)
+             (guix build-system ruby)
+             (gnu packages ruby)
+             (gnu packages databases)
+             (gnu packages rails)
+             (gnu packages rails-wip)
+             (gds packages govuk ruby))
+
+(define govuk-mini-environment-admin
+  (package
+    (name "govuk-mini-environment-admin")
+    (version "0")
+    (source #f)
+    (build-system ruby-build-system)
+    (inputs
+     `(("ruby-rails" ,ruby-rails)
+       ("ruby-pg" ,ruby-pg)
+       ("ruby-gds-sso" ,ruby-gds-sso)
+       ("ruby-govuk-admin-template" ,ruby-govuk-admin-template)
+       ("ruby-plek" ,ruby-plek)
+       ("ruby-terraform" ,ruby-terraform)
+       ("ruby-que" ,ruby-que)))
+    (synopsis "")
+    (description "")
+    (home-page "")
+    (license "")))
+
+(define govuk-mini-environment-admin-development-environment
+  (package
+    (inherit govuk-mini-environment-admin)
+    (inputs
+     `(,@(package-inputs govuk-mini-environment-admin)
+       ("ruby" ,ruby)
+       ("postgresql" ,postgresql)))))
+
+govuk-mini-environment-admin-development-environment
+       
+    
diff --git a/terraform/example.tf b/terraform/aws/mini_environment.tf
index 0efeed8..56c8a3c 100644
--- a/terraform/example.tf
+++ b/terraform/aws/mini_environment.tf
@@ -1,3 +1,12 @@
+terraform {
+  backend "http" {}
+}
+
+variable "slug" {
+  type = "string"
+}
+
+
 provider "aws" {
   region     = "eu-west-1"
 }
@@ -24,8 +33,8 @@ data "template_file" "govuk_service" {
 
   vars {
     guix_daemon_socket = "guix://${data.aws_instance.guix-daemon.private_dns}",
-    app_domain = "banana.aws.cbaines.net",
-    web_domain = "www.banana.aws.cbaines.net"
+    app_domain = "${var.slug}.aws.cbaines.net",
+    web_domain = "www.${var.slug}.aws.cbaines.net"
   }
 }
 
@@ -80,7 +89,7 @@ resource "aws_spot_instance_request" "example" {
 
 resource "aws_route53_record" "example" {
   zone_id = "${data.aws_route53_zone.main.zone_id}"
-  name    = "banana"
+  name    = "${var.slug}"
   type    = "A"
   ttl     = "60"
   records = ["${aws_spot_instance_request.example.public_ip}"]
@@ -88,7 +97,7 @@ resource "aws_route53_record" "example" {
 
 resource "aws_route53_record" "example_wildcard" {
   zone_id = "${data.aws_route53_zone.main.zone_id}"
-  name    = "*.banana"
+  name    = "*.${var.slug}"
   type    = "A"
   ttl     = "60"
   records = ["${aws_spot_instance_request.example.public_ip}"]
diff --git a/terraform/example/govuk.service.tpl b/terraform/aws/mini_environment/govuk.service.tpl
index 52b4b56..52b4b56 100644
--- a/terraform/example/govuk.service.tpl
+++ b/terraform/aws/mini_environment/govuk.service.tpl