Display help text below auto devops domain with nip.io domain name (#45561)

app/helpers/auto_devops_helper.rb

@@ -24,6 +24,15 @@ module AutoDevopsHelper
     end
   end
+  def cluster_ingress_ip(project)
+    project
+      .cluster_ingresses
+      .where("external_ip is not null")
+      .limit(1)
+      .pluck(:external_ip)
+      .first
+  end
+
   private
   def missing_auto_devops_domain?(project)

app/models/project.rb

@@ -217,6 +217,7 @@ class Project < ActiveRecord::Base
   has_one :cluster_project, class_name: 'Clusters::Project'
   has_many :clusters, through: :cluster_project, class_name: 'Clusters::Cluster'
+  has_many :cluster_ingresses, through: :clusters, source: :application_ingress, class_name: 'Clusters::Applications::Ingress'
   # Container repositories need to remove data from the container registry,
   # which is not managed by the DB. Hence we're still using dependent: :destroy

app/views/projects/settings/ci_cd/_autodevops_form.html.haml

@@ -35,7 +35,9 @@
               = _('Domain')
             = form.text_field :domain, class: 'form-control', placeholder: 'domain.com'
             .help-block
-              = s_('CICD|You need to specify a domain if you want to use Auto Review Apps and Auto Deploy stages.')
+              = s_('CICD|A domain is required to use Auto Review Apps and Auto Deploy Stages.')
+              - if cluster_ingress_ip = cluster_ingress_ip(@project)
+                = s_('%{nip_domain} can be used as an alternative to a custom domain.').html_safe % { nip_domain: "<code>#{cluster_ingress_ip}.nip.io</code>".html_safe }
               = link_to icon('question-circle'), help_page_path('topics/autodevops/index.md', anchor: 'auto-devops-base-domain'), target: '_blank'
           = f.submit 'Save changes', class: "btn btn-success prepend-top-15"

changelogs/unreleased/45584-add-nip-io-domain-suggestion-in-auto-devops.yml

+---
+title: Display help text below auto devops domain with nip.io domain name (#45561)
+merge_request: 18496
+author:
+type: added

locale/gitlab.pot

@@ -8,8 +8,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gitlab 1.0.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2018-05-09 09:24+0200\n"
-"PO-Revision-Date: 2018-05-09 09:24+0200\n"
+"POT-Creation-Date: 2018-05-14 10:49+0200\n"
+"PO-Revision-Date: 2018-05-14 10:49+0200\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: \n"
@@ -72,6 +72,9 @@ msgstr[1] ""
 msgid "%{loadingIcon} Started"
 msgstr ""
+msgid "%{nip_domain} can be used as an alternative to a custom domain."
+msgstr ""
+
 msgid "%{number_commits_behind} commits behind %{default_branch}, %{number_commits_ahead} commits ahead"
 msgstr ""
@@ -737,6 +740,9 @@ msgstr ""
 msgid "CI/CD settings"
 msgstr ""
+msgid "CICD|A domain is required to use Auto Review Apps and Auto Deploy Stages."
+msgstr ""
+
 msgid "CICD|An explicit %{ci_file} needs to be specified before you can begin using Continuous Integration and Delivery."
 msgstr ""
@@ -767,9 +773,6 @@ msgstr ""
 msgid "CICD|The Auto DevOps pipeline configuration will be used when there is no %{ci_file} in the project."
 msgstr ""
-msgid "CICD|You need to specify a domain if you want to use Auto Review Apps and Auto Deploy stages."
-msgstr ""
-
 msgid "Can run untagged jobs"
 msgstr ""

spec/features/projects/settings/pipelines_settings_spec.rb

@@ -75,6 +75,29 @@ describe "Projects > Settings > Pipelines settings" do
         expect(project.auto_devops).not_to be_enabled
         expect(project.auto_devops.domain).to eq('test.com')
       end
+
+      context 'when there is a cluster with ingress and external_ip' do
+        before do
+          cluster = create(:cluster, projects: [project])
+          cluster.create_application_ingress!(external_ip: '192.168.1.100')
+        end
+
+        it 'shows the help text with the nip.io domain as an alternative to custom domain' do
+          visit project_settings_ci_cd_path(project)
+          expect(page).to have_content('192.168.1.100.nip.io can be used as an alternative to a custom domain')
+        end
+      end
+
+      context 'when there is no ingress' do
+        before do
+          create(:cluster, projects: [project])
+        end
+
+        it 'alternative to custom domain is not shown' do
+          visit project_settings_ci_cd_path(project)
+          expect(page).not_to have_content('can be used as an alternative to a custom domain')
+        end
+      end
     end
   end
 end

spec/lib/gitlab/import_export/all_models.yml

@@ -185,6 +185,7 @@ project:
 - cluster
 - clusters
 - cluster_project
+- cluster_ingresses
 - creator
 - group
 - namespace