Fixes #30929 - Deprecate ovirt v3 API

app/views/compute_resources/form/_ovirt.html.erb

@@ -1,7 +1,12 @@
+
 <%= text_f f, :url, :size => "col-md-8", :help_block => _("e.g. https://ovirt.example.com/ovirt-engine/api"), :help_inline => documentation_button('5.2.7oVirt/RHEVNotes') %>
 <%= checkbox_f f, :use_v4, :checked => f.object.use_v4?,
                :label => _('Use APIv4'),
-               :help_inline => _("Use the new engine API.") %>
+               :help_inline => _("API v4 is the default version. Uncheck it if you want to use v3, which is deprecated and will be removed in the next release.") %>
+<% unless f.object.use_v4?  %>
+  <%= alert :header => '', :class => 'alert-warning', :close => false,
+            :text => _("Please note, API v3 is deprecated and will be removed completely in the next Foreman release."), :size=> "col-md-8" %>
+<% end %>
 <%= text_f f, :user, :help_block => _("e.g. admin@internal") %>
 <%= password_f f, :password, :keep_value => true, :unset => unset_password? %>
 <% datacenters = (f.object.uuid.nil? && controller.action_name != 'test_connection')  ? [] : f.object.datacenters rescue []%>

config/initializers/deprecations.rb

@@ -1 +1,28 @@
 ActiveSupport::Deprecation.behavior = :silence if Rails.env.production?
+
+Foreman::Application.configure do |app|
+  config.after_initialize do
+    next if Foreman.in_rake?
+    next unless Rails.env.production?
+    next unless ComputeResource.all.unscoped.where(type: 'Foreman::Model::Ovirt').any? { |cr| cr.use_v4 == false }
+    blueprint = NotificationBlueprint.find_by_name('feature_deprecation')
+    next unless blueprint
+    message = UINotifications::StringParser.new(blueprint.message, {feature: 'Ovirt V3 API', version: '2.4'}).to_s
+    next if blueprint.notifications.where(message: message).any?
+    Notification.create!(
+      audience: Notification::AUDIENCE_ADMIN,
+      message: message,
+      notification_blueprint: blueprint,
+      initiator: User.anonymous_admin,
+      actions: {
+        links: [
+          {
+            href: 'https://community.theforeman.org/t/suggestion-to-drop-ovirt-api-v3-from-foreman/19915',
+            title: _('Further Information'),
+            external: true,
+          },
+        ],
+      }
+    )
+  end
+end