Revert "Remove unused Service::RetirementManagement.retire_service_resources method"

app/models/service/retirement_management.rb

@@ -6,6 +6,19 @@ def before_retirement
     children.each(&:retire_now)
   end
 
+  def retire_service_resources
+    # TODO: delete me per https://github.com/ManageIQ/manageiq/pull/16933#discussion_r175805070
+    return
+    direct_service_children.each(&:retire_service_resources)
+
+    service_resources.each do |sr|
+      if sr.resource.respond_to?(:retire_now)
+        $log.info("Retiring service resource for service: #{name} resource ID: #{sr.id}")
+        sr.resource.retire_now(retirement_requester)
+      end
+    end
+  end
+
   def automate_retirement_entrypoint
     r = service_template.resource_actions.detect { |ra| ra.action == 'Retirement' } unless service_template.nil?
     state_machine_entry_point = r.try(:fqname)

spec/models/service/retirement_management_spec.rb

@@ -130,6 +130,35 @@
     expect(@service.retires_on).to eq(options[:date])
   end
 
+  it "#retire_service_resources" do
+    ems = FactoryBot.create(:ems_vmware, :zone => @server.zone)
+    vm  = FactoryBot.create(:vm_vmware, :ems_id => ems.id)
+    @service << vm
+    expect(@service.service_resources.size).to eq(1)
+    expect(@service.service_resources.first.resource).to_not receive(:retire_now)
+    @service.retire_service_resources
+  end
+
+  it "#retire_service_resources should get service's retirement_requester" do
+    ems = FactoryBot.create(:ems_vmware, :zone => @server.zone)
+    vm  = FactoryBot.create(:vm_vmware, :ems_id => ems.id)
+    userid = 'freddy'
+    @service.update(:retirement_requester => userid)
+    @service << vm
+    expect(@service.service_resources.size).to eq(1)
+    expect(@service.service_resources.first.resource).to_not receive(:retire_now).with(userid)
+    @service.retire_service_resources
+  end
+
+  it "#retire_service_resources should get service's nil retirement_requester" do
+    ems = FactoryBot.create(:ems_vmware, :zone => @server.zone)
+    vm  = FactoryBot.create(:vm_vmware, :ems_id => ems.id)
+    @service << vm
+    expect(@service.service_resources.size).to eq(1)
+    expect(@service.service_resources.first.resource).to_not receive(:retire_now).with(nil)
+    @service.retire_service_resources
+  end
+
   it "#finish_retirement" do
     message = "Service: [#{@service.name}], Retires On: [#{Time.zone.now.strftime("%x %R %Z")}], has been retired"
     expect(@service).to receive(:raise_audit_event).with("service_retired", message, nil)