MSPSDS-472: Improve technical setup

web/Gemfile

@@ -20,8 +20,10 @@ gem "elasticsearch-rails"
 gem "govuk_notify_rails"
 gem "jbuilder", "~> 2.8"
 gem "keycloak"
+gem "lograge"
 gem "mini_magick"
 gem "pg", "~> 1.1"
+gem "pghero"
 gem "puma", "~> 3.0"
 gem "pundit"
 gem "rails", "~> 5.2"
@@ -30,6 +32,7 @@ gem "rubyzip", ">= 1.2.1"
 gem "sass-rails", "~> 5.0"
 gem "sidekiq"
 gem "slim-rails"
+gem "slowpoke"
 gem "strong_migrations"
 gem "turbolinks", "~> 5"
 gem "uglifier", ">= 1.3.0"

web/Gemfile.lock

@@ -179,6 +179,11 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
+    lograge (0.10.0)
+      actionpack (>= 4)
+      activesupport (>= 4)
+      railties (>= 4)
+      request_store (~> 1.0)
     loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -208,6 +213,8 @@ GEM
     parser (2.5.3.0)
       ast (~> 2.4.0)
     pg (1.1.3)
+    pghero (2.2.0)
+      activerecord
     powerpack (0.1.2)
     public_suffix (3.0.3)
     puma (3.12.0)
@@ -218,6 +225,7 @@ GEM
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
+    rack-timeout (0.4.2)
     rails (5.2.1)
       actioncable (= 5.2.1)
       actionmailer (= 5.2.1)
@@ -250,6 +258,8 @@ GEM
     redcarpet (3.4.0)
     redis (4.0.3)
     regexp_parser (1.2.0)
+    request_store (1.4.1)
+      rack (>= 1.4)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
@@ -317,6 +327,10 @@ GEM
       rubocop (>= 0.50.0)
       slim (>= 3.0, < 5.0)
       sysexits (~> 1.1)
+    slowpoke (0.2.1)
+      actionpack
+      rack-timeout (>= 0.3.0, < 0.5.0)
+      railties
     solargraph (0.28.4)
       coderay (~> 1.1)
       eventmachine (~> 1.2, >= 1.2.5)
@@ -408,8 +422,10 @@ DEPENDENCIES
   jbuilder (~> 2.8)
   keycloak
   listen (~> 3.1.5)
+  lograge
   mini_magick
   pg (~> 1.1)
+  pghero
   puma (~> 3.0)
   pundit
   rails (~> 5.2)
@@ -425,6 +441,7 @@ DEPENDENCIES
   simplecov-console
   slim-rails
   slim_lint
+  slowpoke
   solargraph
   spring
   spring-watcher-listen (~> 2.0.0)

web/README.md

@@ -120,4 +120,9 @@ See the AWS account section in [the root README](../README.md#aws) to get these
 
 See the Companies House account section in [the root README](../README.md#companies-house) to get this value.
 
+    cf set-env mspsds-web PGHERO_USERNAME XXX
+    cf set-env mspsds-web PGHERO_PASSWORD XXX
+
+This sets the http auth username and password for access to the pgHero dashboard. See confluence for values. 
+
 The app can then be started using `cf restart mspsds-web`.

web/app/controllers/errors_controller.rb

@@ -6,4 +6,8 @@ def not_found
   def internal_server_error
     render status: :internal_server_error
   end
+
+  def timeout
+    render :internal_server_error, status: :service_unavailable
+  end
 end

web/config/application.rb

@@ -27,5 +27,9 @@ class Application < Rails::Application
     config.time_zone = "Europe/London"
 
     config.exceptions_app = self.routes
+
+    # This is the requests' timeout value in seconds. 15 is the default set by Slowpoke
+    # Dev environments need longer due to occasional asset compilation
+    Slowpoke.timeout = Rails.env.production? ? 15 : 120
   end
 end

web/config/database.yml

@@ -21,6 +21,9 @@ default: &default
   username: postgres
   password:
   pool: 5
+  connect_timeout: 2
+  variables:
+    statement_timeout: 250
 
 
 development:

web/config/environments/production.rb

@@ -35,6 +35,8 @@
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.action_controller.asset_host = 'http://assets.example.com'
 
+  config.action_controller.default_url_options = { host: JSON.parse(ENV["VCAP_APPLICATION"])["application_uris"].first }
+
   # Specifies the header that your server uses for sending files.
   # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
   # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX

web/config/initializers/lograge.rb

@@ -0,0 +1,5 @@
+# Be sure to restart your server when you modify this file.
+
+Rails.application.configure do
+  config.lograge.enabled = true
+end

web/config/routes.rb

@@ -92,6 +92,10 @@
 
   match "/404", to: "errors#not_found", via: :all
   match "/500", to: "errors#internal_server_error", via: :all
+  # This is the page that will show for timeouts, currently showing the same as an internal error
+  match "/503", to: "errors#timeout", via: :all
+
+  mount PgHero::Engine, at: "pghero"
 
   root to: redirect(path: "/investigations")
 end

web/test/controllers/errors_controller_test.rb

@@ -18,4 +18,9 @@ class ErrorsControllerTest < ActionDispatch::IntegrationTest
     get "/500"
     assert_response :internal_server_error
   end
+
+  test "should get service_unavailable" do
+    get "/503"
+    assert_response :service_unavailable
+  end
 end

web/test/db/timeout_test.rb

@@ -0,0 +1,9 @@
+require "test_helper"
+
+class TimeoutTest < ActiveSupport::TestCase
+  test "long queries timeout" do
+    assert_raises do
+      ActiveRecord::Base.connection.execute("SELECT pg_sleep(20);")
+    end
+  end
+end