Add backend controllers, models and views

Also annotate existing models.

63 files changed, 1119 insertions, 117 deletions

diff --git a/.envrc b/.envrc
index 31dab2a..1f05664 100644
--- a/.envrc
+++ b/.envrc
@@ -10,6 +10,6 @@ export GUILE_LOAD_COMPILED_PATH="$GNU_GUIX_PATH"
 
 export GUIX_PACKAGE_PATH="$GUILE_LOAD_PATH"
 
-use guix --fallback -l guix.scm
+use guix --keep-failed --fallback -l guix.scm
 
 source_env .local.envrc
diff --git a/app/assets/javascripts/backends.js b/app/assets/javascripts/backends.js
new file mode 100644
index 0000000..dee720f
--- /dev/null
+++ b/app/assets/javascripts/backends.js
@@ -0,0 +1,2 @@
+// Place all the behaviors and hooks related to the matching controller here.
+// All this logic will automatically be available in application.js.
diff --git a/app/assets/javascripts/backends/terraform_aws.js b/app/assets/javascripts/backends/terraform_aws.js
new file mode 100644
index 0000000..dee720f
--- /dev/null
+++ b/app/assets/javascripts/backends/terraform_aws.js
@@ -0,0 +1,2 @@
+// Place all the behaviors and hooks related to the matching controller here.
+// All this logic will automatically be available in application.js.
diff --git a/app/assets/javascripts/backends/terraform_libvirt.js b/app/assets/javascripts/backends/terraform_libvirt.js
new file mode 100644
index 0000000..dee720f
--- /dev/null
+++ b/app/assets/javascripts/backends/terraform_libvirt.js
@@ -0,0 +1,2 @@
+// Place all the behaviors and hooks related to the matching controller here.
+// All this logic will automatically be available in application.js.
diff --git a/app/assets/javascripts/setup.js b/app/assets/javascripts/setup.js
new file mode 100644
index 0000000..dee720f
--- /dev/null
+++ b/app/assets/javascripts/setup.js
@@ -0,0 +1,2 @@
+// Place all the behaviors and hooks related to the matching controller here.
+// All this logic will automatically be available in application.js.
diff --git a/app/assets/stylesheets/backends.css b/app/assets/stylesheets/backends.css
new file mode 100644
index 0000000..afad32d
--- /dev/null
+++ b/app/assets/stylesheets/backends.css
@@ -0,0 +1,4 @@
+/*
+  Place all the styles related to the matching controller here.
+  They will automatically be included in application.css.
+*/
diff --git a/app/assets/stylesheets/backends/terraform_aws.css b/app/assets/stylesheets/backends/terraform_aws.css
new file mode 100644
index 0000000..afad32d
--- /dev/null
+++ b/app/assets/stylesheets/backends/terraform_aws.css
@@ -0,0 +1,4 @@
+/*
+  Place all the styles related to the matching controller here.
+  They will automatically be included in application.css.
+*/
diff --git a/app/assets/stylesheets/backends/terraform_libvirt.css b/app/assets/stylesheets/backends/terraform_libvirt.css
new file mode 100644
index 0000000..afad32d
--- /dev/null
+++ b/app/assets/stylesheets/backends/terraform_libvirt.css
@@ -0,0 +1,4 @@
+/*
+  Place all the styles related to the matching controller here.
+  They will automatically be included in application.css.
+*/
diff --git a/app/assets/stylesheets/setup.css b/app/assets/stylesheets/setup.css
new file mode 100644
index 0000000..afad32d
--- /dev/null
+++ b/app/assets/stylesheets/setup.css
@@ -0,0 +1,4 @@
+/*
+  Place all the styles related to the matching controller here.
+  They will automatically be included in application.css.
+*/
diff --git a/app/controllers/backends/terraform_aws_controller.rb b/app/controllers/backends/terraform_aws_controller.rb
new file mode 100644
index 0000000..b7f10ef
--- /dev/null
+++ b/app/controllers/backends/terraform_aws_controller.rb
@@ -0,0 +1,7 @@
+class Backends::TerraformAwsController < ApplicationController
+  def new
+  end
+
+  def show
+  end
+end
diff --git a/app/controllers/backends/terraform_libvirt_controller.rb b/app/controllers/backends/terraform_libvirt_controller.rb
new file mode 100644
index 0000000..f854bc2
--- /dev/null
+++ b/app/controllers/backends/terraform_libvirt_controller.rb
@@ -0,0 +1,39 @@
+class Backends::TerraformLibvirtController < ApplicationController
+  def new
+    @backend = Backends::TerraformLibvirt.new
+    @backend.uri = "qemu:///system"
+  end
+
+  def create
+    backend = Backends::TerraformLibvirt.create(
+      params
+        .require(:backends_terraform_libvirt)
+        .permit(:label, :uri)
+    )
+
+    flash[:success] = "#{backend.label} created"
+
+    redirect_to setup_path
+  end
+
+  def update
+    backend = Backends::TerraformLibvirt.update(
+      params[:id],
+      params
+        .require(:backends_terraform_libvirt)
+        .permit(:label, :uri)
+    )
+
+    flash[:success] = "#{backend.label} updated"
+  end
+
+  def show
+    @backend = Backends::TerraformLibvirt.find(params['id'])
+  end
+
+  def destroy
+    backend = Backends::TerraformLibvirt.find(params['id'])
+
+    backend.delete
+  end
+end
diff --git a/app/controllers/backends_controller.rb b/app/controllers/backends_controller.rb
new file mode 100644
index 0000000..d433193
--- /dev/null
+++ b/app/controllers/backends_controller.rb
@@ -0,0 +1,4 @@
+class BackendsController < ApplicationController
+  def index
+  end
+end
diff --git a/app/controllers/govuk_guix/revisions_controller.rb b/app/controllers/govuk_guix/revisions_controller.rb
index a890fd0..a0d8c01 100644
--- a/app/controllers/govuk_guix/revisions_controller.rb
+++ b/app/controllers/govuk_guix/revisions_controller.rb
@@ -1,4 +1,20 @@
 class GovukGuix::RevisionsController < ApplicationController
-  def index
+  def show
+    @revision = GovukGuix::Revision.find(params['id'])
   end
+
+  def enqueue_fetch_revision
+    revision = params.require('revision')
+
+    GovukGuix::FetchRevisionJob.enqueue(revision)
+
+    flash[:info] = "Fetching govuk-guix revision (#{revision})..."
+    redirect_to setup_path
+  end
+
+  def fetch_revision_jobs
+    @_revision_jobs ||= GovukGuix::FetchRevisionJob.enqueued_jobs
+  end
+
+  helper_method :fetch_revision_jobs
 end
diff --git a/app/controllers/mini_environments_controller.rb b/app/controllers/mini_environments_controller.rb
index 8009777..d845787 100644
--- a/app/controllers/mini_environments_controller.rb
+++ b/app/controllers/mini_environments_controller.rb
@@ -8,17 +8,23 @@ class MiniEnvironmentsController < ApplicationController
   end
 
   def create
-    @mini_environment = MiniEnvironment.create(
-      params
-        .require(:mini_environment)
-        .permit(
-          :name,
-          :govuk_guix_revision_id
-        )
+    parameters = params.require(
+      :mini_environment
+    ).permit(
+      :name,
+      :govuk_guix_revision_id,
     )
 
-    GovukGuix::BuildJob.enqueue(@mini_environment.id)
+    logger.error(parameters)
+    
+    @mini_environment = MiniEnvironment.new(parameters)
+    @mini_environment.backend = Backends.find_by_type_and_id(
+      params.require(:mini_environment).fetch(:backend)
+    )
+    @mini_environment.save!
 
+    @mini_environment.backend.build(@mini_environment)
+    
     redirect_to @mini_environment
   end
 
@@ -29,11 +35,11 @@ class MiniEnvironmentsController < ApplicationController
     
     case action
     when 'Destroy'
-      DestroyJob.enqueue(@mini_environment.id)
+      MiniEnvironmentJob.enqueue(@mini_environment.id, :destroy)
 
       flash[:notice] = "Destroying mini environment"
     when 'Start'
-      StartJob.enqueue(@mini_environment.id)
+      MiniEnvironmentJob.enqueue(@mini_environment.id, :start)
 
       flash[:notice] = "Starting mini environment"
     else
diff --git a/app/controllers/setup_controller.rb b/app/controllers/setup_controller.rb
new file mode 100644
index 0000000..2d16c4e
--- /dev/null
+++ b/app/controllers/setup_controller.rb
@@ -0,0 +1,10 @@
+class SetupController < ApplicationController
+  def show
+  end
+
+  def fetch_revision_jobs
+    @_revision_jobs ||= GovukGuix::FetchRevisionJob.enqueued_jobs
+  end
+
+  helper_method :fetch_revision_jobs
+end
diff --git a/app/controllers/terraform_http_backend_controller.rb b/app/controllers/terraform_http_backend_controller.rb
index 6b94d8d..2f6e9f8 100644
--- a/app/controllers/terraform_http_backend_controller.rb
+++ b/app/controllers/terraform_http_backend_controller.rb
@@ -2,13 +2,18 @@ class TerraformHttpBackendController < ApplicationController
   skip_before_action :verify_authenticity_token
 
   def create
-    TerraformState.create(data: params)
+    TerraformState.create(
+      mini_environment_id: mini_environment_id,
+      data: params
+    )
 
     render json: '{ "success": true }', status: 200
   end
 
   def show
-    state = TerraformState.last
+    state = TerraformState
+              .where(mini_environment_id: mini_environment_id)
+              .last
 
     if state.nil?
       render json: '{}', status: 404
@@ -18,8 +23,14 @@ class TerraformHttpBackendController < ApplicationController
   end
 
   def destroy
-    TerraformState.delete_all
+    TerraformState
+      .where(mini_environment_id: mini_environment_id)
+      .delete_all
 
     render json: '{ "success": true }', status: 200
   end
+
+  def mini_environment_id
+    params[:mini_environment_id]
+  end
 end
diff --git a/app/helpers/backends/terraform_aws_helper.rb b/app/helpers/backends/terraform_aws_helper.rb
new file mode 100644
index 0000000..b17f988
--- /dev/null
+++ b/app/helpers/backends/terraform_aws_helper.rb
@@ -0,0 +1,2 @@
+module Backends::TerraformAwsHelper
+end
diff --git a/app/helpers/backends/terraform_libvirt_helper.rb b/app/helpers/backends/terraform_libvirt_helper.rb
new file mode 100644
index 0000000..736fdfe
--- /dev/null
+++ b/app/helpers/backends/terraform_libvirt_helper.rb
@@ -0,0 +1,2 @@
+module Backends::TerraformLibvirtHelper
+end
diff --git a/app/helpers/backends_helper.rb b/app/helpers/backends_helper.rb
new file mode 100644
index 0000000..6888611
--- /dev/null
+++ b/app/helpers/backends_helper.rb
@@ -0,0 +1,20 @@
+module BackendsHelper
+  def new_backend_path(backend_class)
+    route_helper("new_#{backend_class.name.demodulize.underscore}_backend_path")
+  end
+
+  def show_backend_path(backend)
+    route_helper(
+      "#{backend.class.name.demodulize.underscore}_backend_path",
+      backend.id
+    )
+  end
+
+  def route_helper(name, *args)
+    Rails
+      .application
+      .routes
+      .url_helpers
+      .send(name, *args)
+  end
+end
diff --git a/app/helpers/setup_helper.rb b/app/helpers/setup_helper.rb
new file mode 100644
index 0000000..89cc8d2
--- /dev/null
+++ b/app/helpers/setup_helper.rb
@@ -0,0 +1,2 @@
+module SetupHelper
+end
diff --git a/app/jobs/destroy_job.rb b/app/jobs/destroy_job.rb
index 2bc72c1..45cd845 100644
--- a/app/jobs/destroy_job.rb
+++ b/app/jobs/destroy_job.rb
@@ -1,6 +1,6 @@
 require 'ruby_terraform'
 
-class DestroyJob < TerraformJob
+class DestroyJob < MiniEnvironmentJob
   @retry_interval = 30
 
   def run_terraform
diff --git a/app/jobs/enqueued_jobs.rb b/app/jobs/enqueued_jobs.rb
new file mode 100644
index 0000000..c394611
--- /dev/null
+++ b/app/jobs/enqueued_jobs.rb
@@ -0,0 +1,12 @@
+module EnqueuedJobs
+  def enqueued_jobs(argument = nil)
+    if argument
+      condition = " AND args->>0 = '#{argument}'"
+    else
+      condition = ""
+    end
+    
+    Que.execute("SELECT * FROM que_jobs WHERE job_class = '#{name}'#{condition}")
+  end
+end
+  
diff --git a/app/jobs/govuk_guix/fetch_revision_job.rb b/app/jobs/govuk_guix/fetch_revision_job.rb
index b1cb171..f1391cc 100644
--- a/app/jobs/govuk_guix/fetch_revision_job.rb
+++ b/app/jobs/govuk_guix/fetch_revision_job.rb
@@ -3,12 +3,16 @@ require 'git'
 require 'open3'
 
 class GovukGuix::FetchRevisionJob < GovukGuix::Job
+  extend EnqueuedJobs
+
   @retry_interval = 30
 
   def run(commit_hash)
     repository.fetch
 
-    repository.checkout(commit_hash)
+    sha = repository.object(commit_hash).sha
+
+    repository.checkout(sha)
 
     command = [
       "#{repository_directory}/guix-pre-inst-env",
@@ -23,7 +27,7 @@ class GovukGuix::FetchRevisionJob < GovukGuix::Job
       logger.debug("FetchRevisionJob: store_path: #{store_path}")
       
       GovukGuix::Revision.create(
-        commit_hash: commit_hash,
+        commit_hash: sha,
         store_path: store_path
       )
     end
diff --git a/app/jobs/govuk_guix/build_job.rb b/app/jobs/govuk_guix/generate_start_command_job.rb
index 381a717..489e35e 100644
--- a/app/jobs/govuk_guix/build_job.rb
+++ b/app/jobs/govuk_guix/generate_start_command_job.rb
@@ -1,11 +1,11 @@
 require 'ruby_terraform'
 require 'open3'
 
-class GovukGuix::BuildJob < GovukGuix::Job
+class GovukGuix::GenerateStartCommandJob < GovukGuix::Job
   @retry_interval = 30
 
   def run(mini_environment_id)
-    logger.info "GovukGuix::BuildJob: Building mini environment #{mini_environment_id}"
+    logger.info "GovukGuix::GenerateStartCommandJob: Building mini environment #{mini_environment_id}"
 
     mini_environment = MiniEnvironment.find(mini_environment_id)
 
@@ -25,9 +25,13 @@ class GovukGuix::BuildJob < GovukGuix::Job
 
     run_command(command) do |output|
       store_path = output.last.strip
-      logger.debug("GovukGuix::BuildJob: start_command: #{store_path}")
+      logger.debug("GovukGuix::GenerateStartCommandJob: start_command: #{store_path}")
       
-      mini_environment.update(start_command: store_path)
+      mini_environment.update(
+        backend_data: {
+          start_command: store_path
+        }
+      )
     end
   end
 end
diff --git a/app/jobs/govuk_guix/generate_vm_image_and_system_job.rb b/app/jobs/govuk_guix/generate_vm_image_and_system_job.rb
new file mode 100644
index 0000000..21455f9
--- /dev/null
+++ b/app/jobs/govuk_guix/generate_vm_image_and_system_job.rb
@@ -0,0 +1,39 @@
+require 'ruby_terraform'
+require 'open3'
+
+class GovukGuix::GenerateVmImageAndSystemJob < GovukGuix::Job
+  @retry_interval = 30
+
+  def run(mini_environment_id)
+    logger.info "#{self.class}: Building mini environment #{mini_environment_id}"
+
+    mini_environment = MiniEnvironment.find(mini_environment_id)
+
+    slug = mini_environment.name.parameterize
+    
+    command = [
+      "#{mini_environment.govuk_guix_revision.store_path}/bin/govuk",
+      "system",
+      "build",
+      "--output=vm-image-and-system",
+      "--rails-environment=production",
+      "--app-domain=#{slug}.aws.cbaines.net",
+      "--web-domain=www.#{slug}.aws.cbaines.net",
+      "--use-high-ports=false",
+      "--use-https=certbot",
+      "--fallback",
+      "whitehall",
+    ]
+
+    run_command(command) do |output|
+      store_path = output.last.strip
+      logger.debug "#{self.class}: vm_image_and_system: #{store_path}"
+      
+      mini_environment.update(
+        backend_data: {
+          vm_image_and_system: store_path
+        }
+      )
+    end
+  end
+end
diff --git a/app/jobs/govuk_guix/job.rb b/app/jobs/govuk_guix/job.rb
index 0161cb1..aebf2f9 100644
--- a/app/jobs/govuk_guix/job.rb
+++ b/app/jobs/govuk_guix/job.rb
@@ -1,6 +1,6 @@
 class GovukGuix::Job < Que::Job
   def run_command(command)
-    logger.debug("#{self.class}: Running command #{command}")
+    logger.debug("#{self.class}: Running command #{command.join(' ')}")
 
     Open3.popen2e(*command) do |stdin, stdout_and_stderr, wait_thr|
       logger.info("#{self.class}: commmand running, pid #{wait_thr.pid}")
diff --git a/app/jobs/terraform_job.rb b/app/jobs/mini_environment_job.rb
index 739a5b5..cda28b4 100644
--- a/app/jobs/terraform_job.rb
+++ b/app/jobs/mini_environment_job.rb
@@ -1,9 +1,9 @@
-class TerraformJob < Que::Job
-  def run(mini_environment_id)
+class MiniEnvironmentJob < Que::Job
+  def run(mini_environment_id, action)
     ActiveRecord::Base.transaction do
-      @mini_environment = MiniEnvironment.find(mini_environment_id)
+      mini_environment = MiniEnvironment.find(mini_environment_id)
 
-      run_terraform
+      mini_environment.backend.send(action, mini_environment)
     end
   end
   
diff --git a/app/jobs/start_job.rb b/app/jobs/start_job.rb
index ec17732..e7acaa4 100644
--- a/app/jobs/start_job.rb
+++ b/app/jobs/start_job.rb
@@ -1,34 +1,9 @@
 require 'ruby_terraform'
 
-class StartJob < TerraformJob
+class StartJob < MiniEnvironmentJob
   @retry_interval = 30
 
-  def run_terraform
-    logger.info "Setting up #{@mini_environment.name}"
-
-    Dir.chdir('terraform/aws') do
-      RubyTerraform.init(
-        backend: true,
-        backend_config: {
-          address: 'http://localhost:3000' + Rails.application.routes.url_helpers.terraform_http_backend_path
-        }
-      )
-
-      RubyTerraform.apply(
-        vars: {
-          aws_region: 'eu-west-1',
-          slug: @mini_environment.name.parameterize,
-          ssh_public_key: ssh_public_key,
-          start_command: @mini_environment.start_command
-        },
-        auto_approve: true
-      )
-    end
-  end
-
-  def ssh_public_key
-    File.open("#{ENV['HOME']}/.ssh/id_rsa.pub") do |file|
-      file.readline()
-    end
+  def perform_mini_environment_action
+    @mini_environment.backend.start(@mini_environment)
   end
 end
diff --git a/app/models/backends.rb b/app/models/backends.rb
new file mode 100644
index 0000000..2e11dfe
--- /dev/null
+++ b/app/models/backends.rb
@@ -0,0 +1,30 @@
+module Backends
+  def self.table_name_prefix
+    'backends_'
+  end
+
+  def self.classes
+    [
+      Backends::TerraformAws,
+      Backends::TerraformLibvirt
+    ]
+  end
+
+  def self.classes_with_backends
+    classes.select do |backend_class|
+      backend_class.all.any?
+    end
+  end
+
+  def self.all
+    classes.flat_map { |backend| backend.all }
+  end
+
+  def self.find_by_type_and_id(type_and_id)
+    type_name, id = type_and_id.split('=')
+
+    type = classes.find { |c| c.name == type_name }
+
+    type.find(id.to_i)
+  end
+end
diff --git a/app/models/backends/terraform_aws.rb b/app/models/backends/terraform_aws.rb
new file mode 100644
index 0000000..d79ff51
--- /dev/null
+++ b/app/models/backends/terraform_aws.rb
@@ -0,0 +1,77 @@
+# == Schema Information
+#
+# Table name: terraform_aws_backends
+#
+#  id                    :integer          not null, primary key
+#  label                 :string
+#  aws_region            :string
+#  aws_access_key_id     :string
+#  aws_secret_access_key :string
+#  created_at            :datetime         not null
+#  updated_at            :datetime         not null
+#
+
+class Backends::TerraformAws < ApplicationRecord
+  has_many :mini_environments, as: :backend
+
+  self.table_name = "terraform_aws_backends"
+
+  def self.label
+    "Amazon Web Services"
+  end
+
+  def type_and_id
+    "#{self.class.name}=#{id}"
+  end
+
+  def build(mini_environment)
+    GovukGuix::GenerateStartCommandJob.enqueue(
+      mini_environment.id
+    )
+  end
+  
+  def start
+    logger.info "Setting up #{@mini_environment.name}"
+
+    Dir.chdir("tmp/terraform-working-directories/#{@mini_environment.name}") do # TODO
+      RubyTerraform.init(
+        backend: true,
+        source: "terraform/aws", # TODO
+        backend_config: {
+          address: 'http://localhost:3000' + Rails.application.routes.url_helpers.terraform_http_backend_path
+        },
+        plugin_dir: "/gnu/store/x0b54k4i02vi05ghc0np7cqs2p5q6i31-profile/bin"
+      )
+
+      RubyTerraform.apply(
+        vars: {
+          aws_region: 'eu-west-1',
+          slug: @mini_environment.name.parameterize,
+          ssh_public_key: ssh_public_key,
+          start_command: @mini_environment.start_command
+        },
+        auto_approve: true
+      )
+    end
+  end
+
+  def destroy
+    Dir.chdir('terraform/aws') do
+      RubyTerraform.destroy(
+        vars: {
+          aws_region: 'eu-west-1',
+          slug: @mini_environment.name.parameterize,
+          ssh_public_key: ssh_public_key,
+          start_command: @mini_environment.start_command
+        },
+        force: true
+      )
+    end
+  end
+
+  def ssh_public_key
+    File.open("#{ENV['HOME']}/.ssh/id_rsa.pub") do |file|
+      file.readline()
+    end
+  end
+end
diff --git a/app/models/backends/terraform_libvirt.rb b/app/models/backends/terraform_libvirt.rb
new file mode 100644
index 0000000..4cb63b7
--- /dev/null
+++ b/app/models/backends/terraform_libvirt.rb
@@ -0,0 +1,101 @@
+# == 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
+#
+
+require 'fileutils'
+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)
+    GovukGuix::GenerateVmImageAndSystemJob.enqueue(
+      mini_environment.id
+    )
+  end
+
+  def start(mini_environment)
+    logger.info "Setting up #{mini_environment.name}"
+
+    source = File.expand_path("terraform/libvirt")
+    FileUtils.mkdir_p working_directory(mini_environment)
+
+    Dir.chdir(working_directory(mini_environment)) do
+      if Dir.empty?(".")
+        RubyTerraform.init(
+          backend: true,
+          from_module: source,
+          backend_config: {
+            address: terraform_backend_address(mini_environment)
+          },
+          plugin_dir: plugin_dir
+        )
+      end
+
+      RubyTerraform.apply(
+        vars: terraform_variables(mini_environment),
+        auto_approve: true
+      )
+    end
+  end
+
+  def destroy(mini_environment)
+    Dir.chdir(working_directory(mini_environment)) do
+      RubyTerraform.destroy(
+        vars: terraform_variables(mini_environment),
+        force: true
+      )
+    end
+  end
+
+  def terraform_variables(mini_environment)
+    mini_environment.backend_data.merge(
+      uri: self.uri,
+      machine_name: mini_environment.name.parameterize,
+    )
+  end
+
+  def terraform_backend_address(mini_environment)
+    (
+      'http://localhost:3000' +
+      Rails
+        .application
+        .routes
+        .url_helpers
+        .mini_environment_terraform_http_backend_path(
+          mini_environment
+        )
+    )
+  end
+
+  def working_directory(mini_environment)
+    "tmp/terraform-working-directories/#{mini_environment.name}"
+  end
+
+  def plugin_dir
+    ENV['PATH'].split(':').first
+  end
+
+  def ssh_public_key
+    File.open("#{ENV['HOME']}/.ssh/id_rsa.pub") do |file|
+      file.readline()
+    end
+  end
+end
diff --git a/app/models/finished_terraform_job.rb b/app/models/finished_terraform_job.rb
index 7ada6bd..1690626 100644
--- a/app/models/finished_terraform_job.rb
+++ b/app/models/finished_terraform_job.rb
@@ -1,3 +1,14 @@
+# == Schema Information
+#
+# Table name: finished_terraform_jobs
+#
+#  id                  :integer          not null, primary key
+#  mini_environment_id :integer
+#  job_class           :string
+#  created_at          :datetime         not null
+#  updated_at          :datetime         not null
+#
+
 class FinishedTerraformJob < ApplicationRecord
   belongs_to :mini_environment
 end
diff --git a/app/models/govuk_guix/revision.rb b/app/models/govuk_guix/revision.rb
index 147b6d6..83b72b5 100644
--- a/app/models/govuk_guix/revision.rb
+++ b/app/models/govuk_guix/revision.rb
@@ -1,3 +1,13 @@
+# == Schema Information
+#
+# Table name: govuk_guix_revisions
+#
+#  commit_hash :string           not null, primary key
+#  store_path  :string
+#  created_at  :datetime         not null
+#  updated_at  :datetime         not null
+#
+
 class GovukGuix::Revision < ApplicationRecord
   self.primary_key = "commit_hash"
 end
diff --git a/app/models/mini_environment.rb b/app/models/mini_environment.rb
index 87ecff8..ae013ab 100644
--- a/app/models/mini_environment.rb
+++ b/app/models/mini_environment.rb
@@ -1,6 +1,24 @@
+# == Schema Information
+#
+# Table name: mini_environments
+#
+#  id                     :integer          not null, primary key
+#  name                   :string
+#  created_at             :datetime         not null
+#  updated_at             :datetime         not null
+#  info                   :jsonb
+#  govuk_guix_revision_id :string
+#  backend_type           :string
+#  backend_id             :integer
+#  backend_data           :jsonb
+#
+
 class MiniEnvironment < ApplicationRecord
   has_many :finished_terraform_jobs, dependent: :destroy
+  has_many :terraform_states, dependent: :destroy
+  
   belongs_to :govuk_guix_revision, class_name: 'GovukGuix::Revision'
+  belongs_to :backend, polymorphic: true
 
   def enqueued_terraform_jobs
     Que.execute("SELECT * FROM que_jobs WHERE args->>0 = '#{id}'")
diff --git a/app/models/terraform_state.rb b/app/models/terraform_state.rb
index fe1d364..28ab358 100644
--- a/app/models/terraform_state.rb
+++ b/app/models/terraform_state.rb
@@ -1,2 +1,13 @@
+# == Schema Information
+#
+# Table name: terraform_states
+#
+#  id                  :integer          not null, primary key
+#  data                :json
+#  created_at          :datetime         not null
+#  updated_at          :datetime         not null
+#  mini_environment_id :integer
+#
+
 class TerraformState < ApplicationRecord
 end
diff --git a/app/models/user.rb b/app/models/user.rb
index 4ca70b3..b78f6f4 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,3 +1,18 @@
+# == Schema Information
+#
+# Table name: users
+#
+#  id                      :integer          not null, primary key
+#  name                    :string
+#  email                   :string
+#  uid                     :string
+#  organisation_slug       :string
+#  organisation_content_id :string
+#  permissions             :text
+#  remotely_signed_out     :boolean          default(FALSE)
+#  disabled                :boolean          default(FALSE)
+#
+
 class User < ApplicationRecord
   include GDS::SSO::User
 
diff --git a/app/views/backends/index.html.erb b/app/views/backends/index.html.erb
new file mode 100644
index 0000000..99ec1b8
--- /dev/null
+++ b/app/views/backends/index.html.erb
@@ -0,0 +1,8 @@
+
+<h1>Backends</h1>
+
+<% Backends.classes.each do |backend_class| %>
+  <h2>&nbsp; - <%= backend_class.label %></h2>
+
+  
+<% end %>
diff --git a/app/views/backends/terraform_aws/new.html.erb b/app/views/backends/terraform_aws/new.html.erb
new file mode 100644
index 0000000..0d33fcf
--- /dev/null
+++ b/app/views/backends/terraform_aws/new.html.erb
@@ -0,0 +1,63 @@
+<a href="<%= setup_path %>" class="btn btn-lg btn-primary pull-right">
+  Back to setup
+</a>
+
+<h1>Create a new AWS backend</h1>
+
+<div class="row">
+  <div class="col-md-10">
+    <%= form_with(model: @backend,
+                  url: { action: "create" },
+                  html: { class: "form-horizontal" }) do |f|
+    %>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :label, class: 'col-sm-4 control-label' %>
+        <div class="col-sm-8">
+          <%= f.text_field(
+            :label,
+            class: 'form-control',
+            placeholder: 'Label for this backend'
+          ) %>
+        </div>
+      </div>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :aws_region, 'AWS Region', class: 'col-sm-4 control-label' %>
+        <div class="col-sm-8">
+          <%= f.text_field(
+            :aws_region,
+            class: 'form-control',
+            placeholder: 'What region to use'
+          ) %>
+        </div>
+      </div>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :aws_access_key_id, 'AWS Access Key ID', class: 'col-sm-4 control-label' %>
+        <div class="col-sm-8">
+          <%= f.text_field(
+            :aws_access_key_id,
+            class: 'form-control',
+          ) %>
+        </div>
+      </div>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :aws_secret_access_key, 'AWS Secret Access Key', class: 'col-sm-4 control-label' %>
+        <div class="col-sm-8">
+          <%= f.password_field(
+            :aws_secret_access_key,
+            class: 'form-control',
+          ) %>
+        </div>
+      </div>
+
+      <div class="form-group form-group-lg">
+        <div class="col-sm-offset-4 col-sm-8">
+          <%= f.submit "Create", class: 'btn btn-lg btn-success' %>
+        </div>
+      </div>
+    <% end %>
+  </div>
+</div>
diff --git a/app/views/backends/terraform_aws/show.html.erb b/app/views/backends/terraform_aws/show.html.erb
new file mode 100644
index 0000000..e112d7d
--- /dev/null
+++ b/app/views/backends/terraform_aws/show.html.erb
@@ -0,0 +1,2 @@
+<h1>Backends::TerraformAws#show</h1>
+<p>Find me in app/views/backends/terraform_aws/show.html.erb</p>
diff --git a/app/views/backends/terraform_libvirt/new.html.erb b/app/views/backends/terraform_libvirt/new.html.erb
new file mode 100644
index 0000000..ead1f74
--- /dev/null
+++ b/app/views/backends/terraform_libvirt/new.html.erb
@@ -0,0 +1,43 @@
+<a href="<%= setup_path %>" class="btn btn-lg btn-primary pull-right">
+  Back to setup
+</a>
+
+<h1>Create a new libvirt backend</h1>
+
+<div class="row">
+  <div class="col-md-8">
+    <%= form_with(model: @backend,
+              url: { action: "create" },
+              html: { class: "form-horizontal" }) do |f|
+    %>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :label, class: 'col-sm-2 control-label' %>
+        <div class="col-sm-10">
+          <%= f.text_field(
+            :label,
+            class: 'form-control',
+            placeholder: 'Label for this backend'
+          ) %>
+        </div>
+      </div>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :uri, 'URI', class: 'col-sm-2 control-label' %>
+        <div class="col-sm-10">
+          <%= f.text_field(
+            :uri,
+            class: 'form-control',
+            placeholder: 'Specify what driver to use, and how to connect to it'
+          ) %>
+        </div>
+      </div>
+      
+      <div class="form-group form-group-lg">
+        <div class="col-sm-offset-2 col-sm-10">
+          <%= f.submit "Create", class: 'btn btn-lg btn-success' %>
+        </div>
+      </div>
+    <% end %>
+  </div>
+</div>
diff --git a/app/views/backends/terraform_libvirt/show.html.erb b/app/views/backends/terraform_libvirt/show.html.erb
new file mode 100644
index 0000000..14b02dc
--- /dev/null
+++ b/app/views/backends/terraform_libvirt/show.html.erb
@@ -0,0 +1,89 @@
+<a href="<%= setup_path %>" class="btn btn-lg btn-primary pull-right">
+  Back to Setup
+</a>
+
+<h1>Backend: <%= @backend.label %></h1>
+
+<div class="row">
+  <div class="col-md-8">
+    <h3>Update details</h3>
+    <br>
+
+    <%= form_with(model: @backend,
+                  url: { action: "update" },
+                  html: { class: "form-horizontal" }) do |f|
+    %>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :label, class: 'col-sm-2 control-label' %>
+        <div class="col-sm-10">
+          <%= f.text_field :label, class: 'form-control' %>
+        </div>
+      </div>
+
+      <div class="form-group form-group-lg">
+        <%= f.label :uri, class: 'col-sm-2 control-label' %>
+        <div class="col-sm-10">
+          <%= f.text_field :uri, class: 'form-control' %>
+        </div>
+      </div>
+      
+      <div class="form-group form-group-lg">
+        <div class="col-sm-offset-2 col-sm-10">
+          <%= f.submit "Save", class: 'btn btn-lg btn-success' %>
+        </div>
+      </div>
+    <% end %>
+  </div>
+  <div class="col-md-4">
+    <h3>Delete backend</h3>
+    <br>
+
+    <% unless @backend.mini_environments.empty? %>
+      <p>
+        Unable to delete backend, as mini environments using this
+        backend still exist.
+      </p>
+
+      <p>
+        To delete this backend, first delete all the mini environments
+        using it.
+      </p>
+    <% end %>
+
+    <%= form_with(model: @backend,
+                  url: { action: "destroy" },
+                  html: { class: "form-horizontal", method: :delete }) do |f|
+    %>
+      <%= f.submit(
+        "Delete",
+        class: (
+          'btn btn-lg btn-danger' +
+          (@backend.mini_environments.empty? ? '' : ' disabled')
+        )
+      ) %>
+    <% end %>
+
+  </div>
+</div>
+
+<h3>Mini environments</h3>
+
+<table class="table table-striped">
+  <tr>
+    <th>Name</th>
+    <th></th>
+  </tr>
+  <% @backend.mini_environments.each do |mini_environment| %>
+    <tr>
+      <td><%= mini_environment.name %></td>
+      <td>
+        <a class="btn btn-default btn-lg pull-right"
+           role="button"
+           href="<%= mini_environment_path(mini_environment) %>">
+          Show details
+        </a>
+      </td>
+    </tr>
+  <% end %>
+</table>
diff --git a/app/views/govuk_guix/revisions/index.html.erb b/app/views/govuk_guix/revisions/index.html.erb
deleted file mode 100644
index 54f9e4a..0000000
--- a/app/views/govuk_guix/revisions/index.html.erb
+++ /dev/null
@@ -1,10 +0,0 @@
-
-<% GovukGuix::Revision.all.each do |revision| %>
-
-  <div>
-
-    <%= revision.inspect %>
-
-  </div>
-
-<% end %>
diff --git a/app/views/govuk_guix/revisions/show.html.erb b/app/views/govuk_guix/revisions/show.html.erb
new file mode 100644
index 0000000..5f2b70d
--- /dev/null
+++ b/app/views/govuk_guix/revisions/show.html.erb
@@ -0,0 +1,5 @@
+<a href="<%= setup_path %>" class="btn btn-lg btn-primary pull-right">
+  Back to Setup
+</a>
+
+<h1>Revision: <%= @revision.commit_hash %></h1>
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 35ea5ff..c37b5f9 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -4,4 +4,13 @@
   <%= yield :extra_headers %>
 <% end %>
 
+<% content_for :navbar_items do %>
+  <li>
+    <a href="<%= mini_environments_path %>">Mini Environments</a>
+  </li>
+  <li>
+    <a href="<%= setup_path %>">Setup</a>
+  </li>
+<% end %>
+
 <%= render template: 'layouts/govuk_admin_template' %>
diff --git a/app/views/mini_environments/index.html.erb b/app/views/mini_environments/index.html.erb
index 5e131c6..b74fe73 100644
--- a/app/views/mini_environments/index.html.erb
+++ b/app/views/mini_environments/index.html.erb
@@ -5,10 +5,30 @@
   Create a new mini environment
 </a>
 
-
+<h1>Your mini environments</h1>
+<br>
 
 <% MiniEnvironment.all.each do |mini_environment| %>
-  <a href="<%= mini_environment_path mini_environment %>">
-    <h2><%= mini_environment.name %></h2>
-  </a>
+  <div class="panel panel-default">
+    <div class="panel-heading">
+      <div class="row">
+        <div class="col-md-8">
+          <h2><%= mini_environment.name %></h2>
+        </div>
+        <div class="col-md-2">
+          <div class="alert alert-success text-center" role="alert" style="margin-bottom: 0px;">
+            Mini environment running
+          </div>
+        </div>
+        <div class="col-md-2">
+          <a class="btn btn-lg btn-primary pull-right" role="button" href="<%= mini_environment_path mini_environment %>">
+            Show details
+          </a>
+        </div>
+      </div>
+    </div>
+  </div>
 <% end %>
+
+<h1>Other mini environments</h1>
+<br>
diff --git a/app/views/mini_environments/new.html.erb b/app/views/mini_environments/new.html.erb
index 7d3f2f2..33cb354 100644
--- a/app/views/mini_environments/new.html.erb
+++ b/app/views/mini_environments/new.html.erb
@@ -1,28 +1,81 @@
+<a href="<%= mini_environments_path %>" class="btn btn-lg btn-primary pull-right">
+  Back to list
+</a>
+
+<h1>Create a new mini environment</h1>
+
 <div class="row">
   <div class="col-md-8">
     <%= form_with(model: @mini_environment,
                   url: { action: "create" },
                   html: { class: 'form-horizontal' }) do |f| %>
 
-      <div class="form-group">
+      <div class="form-group form-group-lg">
         <%= f.label :name, class: 'col-sm-2 control-label' %>
         <div class="col-sm-10">
           <%= f.text_field :name, class: 'form-control' %>
+          <span id="helpBlock" class="help-block">
+            Choose a name for your mini environment. This will form
+            part of the URL used to access it.
+          </span>
         </div>
       </div>
 
-      <div class="form-group">
-        <%= f.label :govuk_guix_revision_id, class: 'col-sm-2 control-label' %>
-        <div class="col-sm-10">
-          <%= f.collection_select :govuk_guix_revision_id, GovukGuix::Revision.all, :commit_hash, :commit_hash %>
-        </div>
-      </div>
-      
-      <div class="form-group">
+      <div class="form-group form-group-lg">
         <div class="col-sm-offset-2 col-sm-10">
           <%= f.submit "Create", class: 'btn btn-lg btn-success' %>
         </div>
       </div>
+
+      <div class="panel panel-default">
+        <div class="panel-heading">
+          <h3 style="margin-top: 10px;">Advanced options</h3>
+        </div>
+        <div class="panel-body">
+          <div class="form-group form-group-lg">
+            <%= f.label :govuk_guix_revision_id, 'Revision', class: 'col-sm-2 control-label' %>
+            <div class="col-sm-10">
+              <%= f.collection_select(
+                :govuk_guix_revision_id,
+                GovukGuix::Revision.all,
+                :commit_hash,
+                :commit_hash,
+                {},
+                {
+                  class: 'form-control'
+                },
+              ) %>
+              <span id="helpBlock" class="help-block">
+                By default the latest set of software is used. If you
+                want to use specific versions of services, select a
+                different revision here.
+              </span>
+            </div>
+          </div>
+
+          <div class="form-group form-group-lg">
+            <%= f.label :backend, class: 'col-sm-2 control-label' %>
+            <div class="col-sm-10">
+              <%= f.grouped_collection_select(
+                :backend,
+                Backends.classes_with_backends,
+                :all,
+                :label,
+                :type_and_id,
+                :label,
+                {},
+                {
+                  class: 'form-control'
+                },
+              ) %>
+              <span id="helpBlock" class="help-block">
+                Choose the backend to use. This controls the resources
+                used to run the mini environment.
+              </span>
+            </div>
+          </div>
+        </div>
+      </div>
     <% end %>
   </div>
 </div>
diff --git a/app/views/mini_environments/show.html.erb b/app/views/mini_environments/show.html.erb
index a852e6c..2895330 100644
--- a/app/views/mini_environments/show.html.erb
+++ b/app/views/mini_environments/show.html.erb
@@ -1,22 +1,39 @@
-<h1>Name: <%= @mini_environment.name %></h1>
+<a href="<%= mini_environments_path %>" class="btn btn-lg btn-primary pull-right">
+  Back to list
+</a>
 
-<%= form_with(url: mini_environment_perform_action_path(@mini_environment),
-              local: true,
-              method: "post") do %>
-  <%= submit_tag('Start',
-                 disabled: !@mini_environment.start_command.present?,
-                 role: 'button',
-                 class: 'btn btn-lg btn-success')
-  %>
+<h1>Name: <%= @mini_environment.name %></h1>
 
-  <%= submit_tag("Destroy",
-                 #disabled: !@mini_environment.start_command.present?,
-                 role: 'button',
-                 class: 'btn btn-lg btn-danger')
-  %>
-<% end %>
+<div class="row">
+  <div class="col-md-9">
+    <a class="btn btn-primary btn-lg"
+       href="https://signon.<%= @mini_environment.name.parameterize %>.aws.cbaines.net">
+      View
+    </a>
 
-<a href="https://signon.<%= @mini_environment.name.parameterize %>.aws.cbaines.net">View</a>
+    <div class="list-group" style="margin-top: 20px;">
+      <%= form_with(url: mini_environment_perform_action_path(@mini_environment),
+                    local: true,
+                    method: "post") do %>
+        <%= submit_tag('Start',
+                       disabled: !@mini_environment.backend_data.present?,
+                       role: 'button',
+                       class: 'list-group-item btn btn-lg btn-success btn-block')
+        %>
+      <% end %>
+      <%= form_with(url: mini_environment_perform_action_path(@mini_environment),
+                    local: true,
+                    method: "post") do %>
+        <%= submit_tag("Destroy",
+                       disabled: @mini_environment.backend_data.present?,
+                       role: 'button',
+                       class: 'list-group-item btn btn-lg btn-danger btn-block',
+                       style: 'margin-top: 5px;')
+        %>
+      <% end %>
+    </div>
+  </div>
+</div>
 
 <h2>Finished jobs</h2>
 
@@ -69,6 +86,5 @@
         </div>
       </div>
     </div>
-<% end %>
-
+  <% end %>
 </div>
diff --git a/app/views/setup/show.html.erb b/app/views/setup/show.html.erb
new file mode 100644
index 0000000..6f8be35
--- /dev/null
+++ b/app/views/setup/show.html.erb
@@ -0,0 +1,73 @@
+
+<h1>Backends</h1>
+
+<% Backends.classes.each do |backend_class| %>
+  <div class="panel panel-default">
+    <!-- Default panel contents -->
+    <div class="panel-heading">
+      <h2><%= backend_class.label %></h2>
+    </div>
+    <ul class="list-group">
+      <% backend_class.all.each do |backend| %>
+        <a class="list-group-item" href="<%= show_backend_path(backend) %>">
+          <%= backend.label %>
+        </a>
+      <% end %>
+      <a class="list-group-item text-center"
+         href="<%= new_backend_path(backend_class) %>">
+        New <%= backend_class.label %> backend
+      </a>
+    </ul>
+  </div>
+<% end %>
+
+<h1>Revisions</h1>
+
+<%= form_with(url: enqueue_fetch_govuk_guix_revision_path,
+              method: "post") do %>
+  <div class="input-group input-group-lg">
+    <%= text_field_tag(
+      :revision,
+      'origin/master',
+      class: 'form-control',
+      placeholder: 'Git revision'
+    ) %>
+    <span class="input-group-btn">
+      <%= submit_tag("Fetch Revision",
+                     role: 'button',
+                     class: 'btn btn-lg btn-success')
+      %>
+    </span>
+  </div>
+<% end %>
+
+<br>
+<div class="list-group">
+  <% if fetch_revision_jobs.count %>
+    <% fetch_revision_jobs.each do |job| %>
+      <a href="#" class="list-group-item disabled">
+        Fetching
+        <span style="font-family: monospace;">
+          <%= job["args"].first %>
+        </span>
+
+        <div class="progress pull-right" style="width: 21.2em">
+          <div class="progress-bar progress-bar-striped active" role="progressbar" style="width: 100%">
+            <span class="sr-only">Fetching revision in progress</span>
+          </div>
+        </div>
+      </a>
+    <% end %>
+  <% end %>
+  
+  <% GovukGuix::Revision.order(:created_at).reverse_order.each do |revision| %>
+    <a href="<%= govuk_guix_revision_path(revision) %>" class="list-group-item">
+      <span class="badge" style="font-family: monospace;">
+        <%= revision.commit_hash %>
+      </span>
+
+      <%= revision.created_at %>
+    </a>
+  <% end %>
+</div>
+
diff --git a/config/database.yml b/config/database.yml
index 313bfde..4504ea0 100644
--- a/config/database.yml
+++ b/config/database.yml
@@ -5,13 +5,13 @@ default: &default
 development:
   <<: *default
   database: govuk_mini_environment_admin_development
-  url: <%= ENV['DATABASE_URL'] %>
+  #url: <%= ENV['DATABASE_URL'] %>
 
-test:
-  <<: *default
-  database: govuk_mini_environment_admin_test
-  url: <%= ENV["DATABASE_URL"].try(:sub, /([-_]development)?$/, '_test')%>
+# test:
+#   <<: *default
+#   database: govuk_mini_environment_admin_test
+#   url: <%= ENV["DATABASE_URL"].try(:sub, /([-_]development)?$/, '_test')%>
 
-production:
-  <<: *default
-  database: govuk_mini_environment_admin_production
+# production:
+#   <<: *default
+#   database: govuk_mini_environment_admin_production
diff --git a/config/routes.rb b/config/routes.rb
index 06470d3..51e5add 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,16 +1,28 @@
 Rails.application.routes.draw do
   root :to => 'mini_environments#index'
 
-  resource :terraform_http_backend,
-           controller: :terraform_http_backend,
-           except: %i[new edit update]
+  scope :setup do
+    get '/', to: 'setup#show', as: 'setup'
 
-  resources :mini_environments, path: '/' do
-    post '/', to: 'mini_environments#perform_action', as: 'perform_action'
-  end
+    resources :govuk_guix_revisions,
+              controller: 'govuk_guix/revisions',
+              only: %i[show destroy]
 
-  namespace :govuk_guix do
-    get 'revisions', to: 'revisions#index'
+    post 'enqueue_fetch_govuk_guix_revision',
+         to: 'govuk_guix/revisions#enqueue_fetch_revision',
+         as: 'enqueue_fetch_govuk_guix_revision'
+
+    scope '/backends' do
+      resources :terraform_aws,
+                as: 'terraform_aws_backends',
+                controller: 'backends/terraform_aws',
+                only: %i[create new show update destroy]
+
+      resources :terraform_libvirt,
+                as: 'terraform_libvirt_backends',
+                controller: 'backends/terraform_libvirt',
+                only: %i[create new show update destroy]
+    end
   end
 
   resources :que_jobs, only: [] do
@@ -19,4 +31,12 @@ Rails.application.routes.draw do
       post 'retry_now'
     end
   end
+
+  resources :mini_environments, path: '/' do
+    post '/', to: 'mini_environments#perform_action', as: 'perform_action'
+
+    resource :terraform_http_backend,
+             controller: :terraform_http_backend,
+             except: %i[new edit update]
+  end
 end
diff --git a/db/migrate/20180311125442_add_backend_data_to_mini_environment.rb b/db/migrate/20180311125442_add_backend_data_to_mini_environment.rb
new file mode 100644
index 0000000..57746f8
--- /dev/null
+++ b/db/migrate/20180311125442_add_backend_data_to_mini_environment.rb
@@ -0,0 +1,5 @@
+class AddBackendDataToMiniEnvironment < ActiveRecord::Migration[5.1]
+  def change
+    add_column :mini_environments, :backend_data, :jsonb
+  end
+end
diff --git a/db/migrate/20180311125615_remove_start_command_from_mini_environment.rb b/db/migrate/20180311125615_remove_start_command_from_mini_environment.rb
new file mode 100644
index 0000000..686b7e1
--- /dev/null
+++ b/db/migrate/20180311125615_remove_start_command_from_mini_environment.rb
@@ -0,0 +1,5 @@
+class RemoveStartCommandFromMiniEnvironment < ActiveRecord::Migration[5.1]
+  def change
+    remove_column :mini_environments, :start_command, :string
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index e66fa06..59427c0 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: 20180305222157) do
+ActiveRecord::Schema.define(version: 20180311125615) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -35,9 +35,9 @@ ActiveRecord::Schema.define(version: 20180305222157) do
     t.datetime "updated_at", null: false
     t.jsonb "info"
     t.string "govuk_guix_revision_id"
-    t.string "start_command"
     t.string "backend_type"
     t.bigint "backend_id"
+    t.jsonb "backend_data"
     t.index ["backend_type", "backend_id"], name: "index_mini_environments_on_backend_type_and_backend_id"
     t.index ["govuk_guix_revision_id"], name: "index_mini_environments_on_govuk_guix_revision_id"
   end
diff --git a/guix.scm b/guix.scm
index 1d85815..5a1af1d 100644
--- a/guix.scm
+++ b/guix.scm
@@ -3,6 +3,7 @@
              (gnu packages ruby)
              (gnu packages databases)
              (gnu packages rails)
+             (gnu packages terraform)
              (gds packages govuk ruby))
 
 (define govuk-mini-environment-admin
@@ -19,7 +20,12 @@
        ("ruby-plek" ,ruby-plek)
        ("ruby-terraform" ,ruby-terraform)
        ("ruby-que" ,ruby-que)
-       ("ruby-git" ,ruby-git)))
+       ("ruby-git" ,ruby-git)
+       ("terraform" ,terraform)
+       ("terraform-provider-libvirt" ,(package
+                                        (inherit terraform-provider-libvirt)
+                                        (source
+                                         "/home/chris/Projects/terraform-provider-libvirt")))))
     (synopsis "")
     (description "")
     (home-page "")
@@ -32,8 +38,7 @@
      `(,@(package-inputs govuk-mini-environment-admin)
        ("ruby" ,ruby)
        ("ruby-rerun" ,ruby-rerun)
+       ("ruby-annotate" ,ruby-annotate)
        ("postgresql" ,postgresql)))))
 
 govuk-mini-environment-admin-development-environment
-       
-    
diff --git a/terraform/libvirt/mini_environment.tf b/terraform/libvirt/mini_environment.tf
new file mode 100644
index 0000000..4b9965d
--- /dev/null
+++ b/terraform/libvirt/mini_environment.tf
@@ -0,0 +1,68 @@
+terraform {
+  backend "http" {}
+}
+
+variable "machine_name" {
+  type = "string"
+}
+
+variable "uri" {
+  type = "string"
+}
+
+variable "vm_image_and_system" {
+  type = "string"
+}
+
+provider "libvirt" {
+  uri = "${var.uri}"
+}
+
+resource "libvirt_network" "vm_network" {
+   name = "vm_network"
+   addresses = ["10.0.1.0/24"]
+}
+
+# Create the machine
+resource "libvirt_domain" "domain-ubuntu" {
+  name = "${var.machine_name}"
+  memory = "8196"
+  vcpu = 4
+
+  kernel = "${var.vm_image_and_system}/system/kernel/bzImage"
+  initrd = "${var.vm_image_and_system}/system/initrd"
+
+  cmdline {
+    "--root" = "/dev/vda1"
+    "--system" = "${var.vm_image_and_system}/system"
+    "--load" = "${var.vm_image_and_system}/system/boot"
+  }
+
+  filesystem {
+    source   = "/gnu/store"
+    target   = "TAG_gnu_store"
+    readonly = true
+    accessmode = "passthrough"
+  }
+
+  disk {
+    file = "${var.vm_image_and_system}/image"
+    readonly = true
+  }
+
+  network_interface {
+    network_name = "${libvirt_network.vm_network.name}"
+  }
+
+  console {
+    type        = "pty"
+    target_port = "0"
+    target_type = "serial"
+  }
+
+  console {
+    type        = "pty"
+    target_type = "virtio"
+    target_port = "1"
+  }
+}
diff --git a/test/controllers/backends/terraform_aws_controller_test.rb b/test/controllers/backends/terraform_aws_controller_test.rb
new file mode 100644
index 0000000..0c574fa
--- /dev/null
+++ b/test/controllers/backends/terraform_aws_controller_test.rb
@@ -0,0 +1,14 @@
+require 'test_helper'
+
+class Backends::TerraformAwsControllerTest < ActionDispatch::IntegrationTest
+  test "should get new" do
+    get backends_terraform_aws_new_url
+    assert_response :success
+  end
+
+  test "should get show" do
+    get backends_terraform_aws_show_url
+    assert_response :success
+  end
+
+end
diff --git a/test/controllers/backends/terraform_libvirt_controller_test.rb b/test/controllers/backends/terraform_libvirt_controller_test.rb
new file mode 100644
index 0000000..376d753
--- /dev/null
+++ b/test/controllers/backends/terraform_libvirt_controller_test.rb
@@ -0,0 +1,14 @@
+require 'test_helper'
+
+class Backends::TerraformLibvirtControllerTest < ActionDispatch::IntegrationTest
+  test "should get new" do
+    get backends_terraform_libvirt_new_url
+    assert_response :success
+  end
+
+  test "should get show" do
+    get backends_terraform_libvirt_show_url
+    assert_response :success
+  end
+
+end
diff --git a/test/controllers/backends_controller_test.rb b/test/controllers/backends_controller_test.rb
new file mode 100644
index 0000000..fe2682e
--- /dev/null
+++ b/test/controllers/backends_controller_test.rb
@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class BackendsControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end
diff --git a/test/controllers/setup_controller_test.rb b/test/controllers/setup_controller_test.rb
new file mode 100644
index 0000000..d350d63
--- /dev/null
+++ b/test/controllers/setup_controller_test.rb
@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class SetupControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end
diff --git a/test/fixtures/backends/terraform_aws.yml b/test/fixtures/backends/terraform_aws.yml
new file mode 100644
index 0000000..b0f1f9d
--- /dev/null
+++ b/test/fixtures/backends/terraform_aws.yml
@@ -0,0 +1,13 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  label: MyString
+  aws_region: MyString
+  aws_access_key_id: MyString
+  aws_secret_access_key: MyString
+
+two:
+  label: MyString
+  aws_region: MyString
+  aws_access_key_id: MyString
+  aws_secret_access_key: MyString
diff --git a/test/fixtures/backends/terraform_libvirts.yml b/test/fixtures/backends/terraform_libvirts.yml
new file mode 100644
index 0000000..06293db
--- /dev/null
+++ b/test/fixtures/backends/terraform_libvirts.yml
@@ -0,0 +1,9 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  label: MyString
+  uri: MyString
+
+two:
+  label: MyString
+  uri: MyString
diff --git a/test/models/backends/terraform_aws_test.rb b/test/models/backends/terraform_aws_test.rb
new file mode 100644
index 0000000..78cd8de
--- /dev/null
+++ b/test/models/backends/terraform_aws_test.rb
@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class Backends::TerraformAwsTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end
diff --git a/test/models/backends/terraform_libvirt_test.rb b/test/models/backends/terraform_libvirt_test.rb
new file mode 100644
index 0000000..b7d3c35
--- /dev/null
+++ b/test/models/backends/terraform_libvirt_test.rb
@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class Backends::TerraformLibvirtTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end