Fixes #36310 - Migrate off ContentViews generated for repository export

Ensures no Hosts remain on ContentViews generated for repository export.
If doing so would leave the Host a valid ContentView, the Default
Organization View is assigned to it.

Also implements additional filtering in the candlepin proxies controller,
and several additional tests.

app/controllers/katello/api/rhsm/candlepin_proxies_controller.rb

@@ -211,7 +211,16 @@ def enabled_repos
 
     #api :POST, "/environments/:environment_id/consumers", N_("Register a consumer in environment")
     def consumer_create
-      host = Katello::RegistrationManager.process_registration(rhsm_params, find_content_view_environments)
+      content_view_environments = find_content_view_environments
+      if content_view_environments.any? { |cve| cve.content_view.generated_for_repository_export? }
+        render json: {
+          displayMessage: _("Cannot register with a content view generated for repository export"),
+          errors: [_("Cannot register with a content view generated for repository export")]
+        }, status: :bad_request
+        return
+      end
+
+      host = Katello::RegistrationManager.process_registration(rhsm_params, content_view_environments)
 
       host.reload
 
@@ -408,7 +417,8 @@ def find_activation_keys
     def update_environments_from_facts(param_environments)
       return if param_environments.blank?
       new_envs = param_environments.map do |env|
-        get_content_view_environment("cp_id", env['id'])
+        cve = get_content_view_environment("cp_id", env['id'])
+        cve unless cve&.content_view&.generated_for_repository_export?
       end
       new_envs.compact!
       Rails.logger.debug "Setting new content view environments for host #{@host.to_label}: #{new_envs.map(&:label)}"

db/migrate/20240815080259_migrate_off_generated_content_views.rb

@@ -0,0 +1,40 @@
+class MigrateOffGeneratedContentViews < ActiveRecord::Migration[6.1]
+  def up
+    say_with_time "Migrating hosts off generated content views" do
+      migrate_hosts
+    end
+  end
+
+  def down
+    say "This migration cannot be reversed", true
+  end
+
+  private
+
+  def migrate_hosts
+    say_with_time "Migrating hosts..." do
+      generated_content_views = Katello::ContentView.where(generated_for: 'repository_export')
+
+      facets = Katello::Host::ContentFacet.joins(:content_view_environments)
+      facets = facets.where(katello_content_view_environments: { content_view_id: generated_content_views })
+      facets.find_each do |content_facet|
+        offending_cves = content_facet.content_view_environments.select { |cve| generated_content_views.include?(cve.content_view) }
+        valid_cves = content_facet.content_view_environments - offending_cves
+
+        if valid_cves.empty?
+          default_view = Katello::ContentView.find_by(name: "Default Organization View", organization: content_facet.host.organization)
+          if default_view
+            default_cve = default_view.content_view_environments.find_by(lifecycle_environment: content_facet.lifecycle_environments.first)
+            content_facet.update!(content_view_environments: [default_cve])
+            say "Replaced all content views with Default Organization View for host #{content_facet.host.name}", true
+          else
+            say "No Default Organization View found for host #{content_facet.host.name}. Skipping.", true
+          end
+        else
+          content_facet.update!(content_view_environments: valid_cves)
+          say "Removed offending content views for host #{content_facet.host.name}", true
+        end
+      end
+    end
+  end
+end

test/controllers/api/rhsm/candlepin_proxies_controller_test.rb

@@ -85,7 +85,7 @@ module Katello
       end
     end
 
-    describe "register with a lifecycle environment" do
+    describe "register with a single lifecycle environment" do
       before do
         @facts = { 'network.hostname' => 'somehostname'}
         @content_view_environment = ContentViewEnvironment.find(katello_content_view_environments(:library_default_view_environment).id)
@@ -122,7 +122,7 @@ module Katello
         assert_response 400
       end
 
-      it "should not register" do
+      it "should not register with dead services" do
         ::Katello::RegistrationManager.expects(:check_registration_services).returns(false)
         ::Katello::RegistrationManager.expects(:process_registration).never
 
@@ -131,6 +131,31 @@ module Katello
 
         assert_response 500
       end
+
+      it "should not register with a content view generated for repository export" do
+        organization = Organization.find(taxonomies(:empty_organization).id)
+        library = organization.library
+
+        generated_cv = FactoryBot.create(:katello_content_view, :generated_for => :repository_export, :organization => organization)
+        generated_cve = FactoryBot.create(:katello_content_view_environment,
+                                          :content_view => generated_cv,
+                                          :environment => library)
+
+        Resources::Candlepin::Consumer.stubs(:get)
+        ::Katello::RegistrationManager.expects(:check_registration_services).returns(true)
+        ::Katello::RegistrationManager.expects(:process_registration).never
+
+        post(
+          :consumer_create,
+          :params => {
+            :organization_id => organization.label,
+            :environment_id => generated_cve.cp_id,
+            :facts => @facts
+          }
+        )
+
+        assert_response 400
+      end
     end
 
     describe "update enabled_repos" do

test/models/activation_key_test.rb

@@ -106,6 +106,16 @@ def setup
       end
     end
 
+    test "should not allow generated content view to be associated with activation key" do
+      generated_cv = FactoryBot.create(:katello_content_view, :generated_for => :repository_export, :organization => @dev_view.organization)
+
+      exception = assert_raises(ActiveRecord::RecordInvalid) do
+        @dev_key.update!(content_view: generated_cv)
+      end
+
+      assert_match(/Generated content views cannot be assigned to hosts or activation keys/, exception.message)
+    end
+
     def test_search_name
       activation_keys = ActivationKey.search_for("name = \"#{@dev_staging_view_key.name}\"")
       assert_includes activation_keys, @dev_staging_view_key

test/models/host/content_facet_test.rb

@@ -93,6 +93,17 @@ def test_audit_for_content_facet
       content_facet_rec = host1.associated_audits.where(auditable_id: content_facet1.id)
       assert content_facet_rec, "No associated audit record for content_facet"
     end
+
+    def test_content_view_environments_not_generated_for_repository_export
+      generated_cv = FactoryBot.create(:katello_content_view, :generated_for => :repository_export, :organization => view.organization)
+      generated_cve = FactoryBot.create(:katello_content_view_environment, :content_view => generated_cv, :environment => library)
+
+      exception = assert_raises(ActiveRecord::RecordInvalid) do
+        content_facet.content_view_environments = [generated_cve]
+      end
+
+      assert_includes exception.message, "Content view '#{generated_cv.name}' is a generated content view, which cannot be assigned to hosts or activation keys."
+    end
   end
 
   class ContentFacetErrataTest < ContentFacetBase