Add endpoint that returns a list of deployments that happened within last 8.hours

app/controllers/projects/deployments_controller.rb

+class Projects::DeploymentsController < Projects::ApplicationController
+  before_action :authorize_read_deployment!
+
+  def index
+    deployments = environment.deployments.where('created_at > ?', 8.hours.ago)
+                    .map { |d| d.slice(:id, :iid, :created_at, :sha, :ref, :tag) }
+
+    render json: { deployments: deployments }
+  end
+
+  private
+
+  def environment
+    @environment ||= project.environments.find(params[:environment_id])
+  end
+end

config/routes/project.rb

@@ -168,6 +168,8 @@ constraints(ProjectUrlConstrainer.new) do
         collection do
           get :folder, path: 'folders/:id'
         end
+
+        resources :deployments, only: [:index]
       end
 
       resource :cycle_analytics, only: [:show]

db/migrate/20170327091750_add_created_at_index_to_deployments.rb

+class AddCreatedAtIndexToDeployments < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def change
+    add_concurrent_index :deployments, :created_at
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170317203554) do
+ActiveRecord::Schema.define(version: 20170327091750) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -346,6 +346,7 @@ ActiveRecord::Schema.define(version: 20170317203554) do
     t.string "on_stop"
   end
 
+  add_index "deployments", ["created_at"], name: "index_deployments_on_created_at", using: :btree
   add_index "deployments", ["project_id", "environment_id", "iid"], name: "index_deployments_on_project_id_and_environment_id_and_iid", using: :btree
   add_index "deployments", ["project_id", "iid"], name: "index_deployments_on_project_id_and_iid", unique: true, using: :btree
 

spec/controllers/projects/deployments_controller_spec.rb

+require 'spec_helper'
+
+describe Projects::DeploymentsController do
+  include ApiHelpers
+
+  let(:user) { create(:user) }
+  let(:project) { create(:empty_project) }
+  let(:environment) { create(:environment, name: 'production', project: project) }
+  let(:deployment) { create(:deployment, project: project, environment: environment) }
+
+  before do
+    project.team << [user, :master]
+
+    sign_in(user)
+  end
+
+  describe 'GET #index' do
+    it 'returns list of deployments withing last 8 hours' do
+      create(:deployment, environment: environment, created_at: 9.hours.ago)
+      create(:deployment, environment: environment, created_at: 7.hours.ago)
+      create(:deployment, environment: environment)
+
+      get :index, environment_params
+
+      expect(response).to be_ok
+
+      expect(json_response['deployments'].count).to eq(2)
+    end
+
+    it 'returns a list with deployments information' do
+      deployment = create(:deployment, environment: environment)
+
+      get :index, environment_params
+      expect(response).to be_ok
+
+      deployments = json_response['deployments']
+      deployment_info = deployments.first.with_indifferent_access
+      created_at = deployment_info.delete(:created_at).to_time.utc
+
+      expect(deployments.count).to eq(1)
+      expect(deployment_info).to include(:id, :iid, :sha, :ref, :tag)
+      expect(deployment).to have_attributes(deployment_info)
+      expect(deployment.created_at).to be_within(1.second).of(created_at)
+    end
+  end
+
+  def environment_params(opts={})
+    opts.reverse_merge(namespace_id: project.namespace, project_id: project, environment_id: environment.id)
+  end
+end