From 3b4a232c4ab6c1c920645d8c596c70a9fb0acaa9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Meny?= <smeny@users.noreply.github.com>
Date: Fri, 28 Jan 2022 09:01:08 +0000
Subject: [PATCH] Add health check (#253)

---
 config/routes.rb           | 2 ++
 manifest.yml               | 2 ++
 spec/features/test_spec.rb | 5 +++++
 3 files changed, 9 insertions(+)

diff --git a/config/routes.rb b/config/routes.rb
index 8f7a1db47..40ad98333 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -9,6 +9,8 @@ Rails.application.routes.draw do
     get "confirmations/reset", to: "auth/passwords#reset_confirmation"
   end
 
+  get "/health", to: ->(_) { [204, {}, [nil]] }
+
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
   ActiveAdmin.routes(self)
 
diff --git a/manifest.yml b/manifest.yml
index afabbb4f7..8938a313c 100644
--- a/manifest.yml
+++ b/manifest.yml
@@ -7,6 +7,8 @@ defaults: &defaults
       command: bundle exec rake cf:on_first_instance db:migrate && bin/rails server
       instances: 2
       memory: 512M
+  health-check-type: http
+  health-check-http-endpoint: /health
 
 applications:
   - name: dluhc-core-staging
diff --git a/spec/features/test_spec.rb b/spec/features/test_spec.rb
index 13e42dee1..556d72a52 100644
--- a/spec/features/test_spec.rb
+++ b/spec/features/test_spec.rb
@@ -4,4 +4,9 @@ RSpec.describe "Test Features" do
     visit("/")
     expect(page).to have_content("Submit social housing lettings and sales data (CORE)")
   end
+
+  it "Responds to a health check" do
+    visit("/health")
+    expect(page).to have_http_status(204)
+  end
 end