Add UUID facet

Should keep the UUID around over rebuilds as well, to allow booting
install media based on UUID

README.md

@@ -7,10 +7,6 @@ Example iPXE boot URLs;
 `http://foreman.example.com/unattended/iPXE?uuid=${uuid}`  
 `http://template-proxy.example.com:8000/unattended/iPXE?mac=${netX/mac}&uuid=${uuid}`
 
-### TODO:
-
-- Support booting machines in build mode (facts are wiped when machines are in build)
-
 ## Installation
 
 See the [Plugins install instructions, advanced installation from gems](https://theforeman.org/plugins/#2.3AdvancedInstallationfromGems) for information on how to install this plugins.

app/models/foreman_uuid_boot/uuidboot_host_facet.rb

+# frozen_string_literal: true
+
+module ForemanUuidBoot
+  class UuidbootHostFacet < ApplicationRecord
+    include Facets::Base
+
+    def self.populate_fields_from_facts(host, parser, _type, _proxy)
+      facet = host.uuidboot_facet || host.build_uuidboot_facet
+      facet.uuid = parser.facts.dig('dmi', 'product', 'uuid') || parser.facts['uuid']
+      facet.save if facet.changed?
+    end
+  end
+end

app/services/foreman/unattended_installation/concerns/host_finder_extensions.rb

@@ -13,6 +13,14 @@ module HostFinderExtensions
   def find_host_by_uuid
     return unless (uuid = query_params['uuid'])
 
+    facet = ForemanUuidBoot::UuidbootHostFacet.where(uuid: uuid).order(:created_at)
+    if facet.any?
+      Rails.logger.warn("Multiple hosts found with #{uuid}, picking up the most recent") if facet.count > 1
+
+      return facet.last.host.reload
+    end
+
+    # Fallback fact search
     fact_name_id = FactName.where(name: 'uuid').map(&:id)
     return unless fact_name_id.any?
 

db/migrate/20230120100100_add_uuidboot_facet.rb

+# frozen_string_literal: true
+
+class AddUuidbootFacet < ActiveRecord::Migration[5.1]
+  def change
+    create_table :uuidboot_host_facets do |t|
+      t.references :host, type: :integer, foreign_key: true, index: { unique: true }
+      t.uuid :uuid, null: false
+
+      t.timestamps
+    end
+  end
+end

foreman_uuid_boot.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.homepage      = 'https://github.com/ananace/foreman_uuid_boot'
   spec.license       = 'GPL-3.0'
 
-  spec.files         = Dir['{app,lib}/**/*.{rake,rb}'] + %w[LICENSE.txt Rakefile README.md]
+  spec.files         = Dir['{app,db,lib}/**/*.{rake,rb}'] + %w[LICENSE.txt Rakefile README.md]
 
   spec.metadata['rubygems_mfa_required'] = 'true'
 

lib/foreman_uuid_boot/engine.rb

@@ -6,9 +6,19 @@ module ForemanUuidBoot
 
     config.autoload_paths += Dir["#{config.root}/app/services/foreman/unattended_installation/concerns"]
 
+    initializer 'foreman_uuid_boot.load_app_instance_data' do |app|
+      ForemanUuidBoot::Engine.paths['db/migrate'].existent.each do |path|
+        app.config.paths['db/migrate'] << path
+      end
+    end
+
     initializer 'foreman_uuid_boot.register_plugin', before: :finisher_hook do |_app|
       Foreman::Plugin.register :foreman_uuid_boot do
-        requires_foreman '>= 1.14'
+        requires_foreman '>= 2.5'
+
+        register_facet ForemanUuidBoot::UuidbootHostFacet, :uuidboot_facet do
+          set_dependent_action :destroy
+        end
       end
     end