Add location LED operations

These operations are triggered by identify menu actions in the UI.

app/models/manageiq/providers/redfish/physical_infra_manager/operations.rb

@@ -3,5 +3,6 @@ module PhysicalInfraManager::Operations
     extend ActiveSupport::Concern
 
     include_concern "Power"
+    include_concern "Led"
   end
 end

app/models/manageiq/providers/redfish/physical_infra_manager/operations/led.rb

@@ -0,0 +1,38 @@
+module ManageIQ::Providers::Redfish
+  module PhysicalInfraManager::Operations::Led
+    # Keep this in sync with app/models/physical_server/operations/led.rb in
+    # core and IndicatorLED enum in Redfish ComputerSystem type. Name of the
+    # method comes from the core and the action name used in the reset call
+    # from the IndicatorLED enum.
+
+    def blink_loc_led(server, _options)
+      set_led_state("Blinking", server)
+    end
+
+    def turn_on_loc_led(server, _options)
+      set_led_state("Lit", server)
+    end
+
+    def turn_off_loc_led(server, _options)
+      set_led_state("Off", server)
+    end
+
+    private
+
+    def set_led_state(state, server)
+      $redfish_log.info("Setting #{server.ems_ref} LED state to #{state}.")
+      with_provider_connection do |client|
+        system = client.find(server.ems_ref)
+        if system.nil?
+          $redfish_log.error("#{server.ems_ref} does not exist anymore.")
+          return
+        end
+
+        response = system.patch(:payload => { "IndicatorLED" => state })
+        unless response.status == 200
+          $redfish_log.error("LED state change on #{server.ems_ref} failed.")
+        end
+      end
+    end
+  end
+end

spec/models/manageiq/providers/redfish/physical_infra_manager/operations/led_spec.rb

@@ -0,0 +1,24 @@
+describe ManageIQ::Providers::Redfish::PhysicalInfraManager do
+  let(:server) { FactoryGirl.create(:redfish_physical_server, :vcr) }
+  subject(:ems) do
+    FactoryGirl.create(:ems_redfish_physical_infra, :vcr)
+  end
+
+  describe "#blink_loc_led", :vcr do
+    it "makes location LED start blinking" do
+      ems.blink_loc_led(server, nil)
+    end
+  end
+
+  describe "#turn_on_loc_led", :vcr do
+    it "turns on location LED" do
+      ems.turn_on_loc_led(server, nil)
+    end
+  end
+
+  describe "#turn_off_loc_led", :vcr do
+    it "turns off location LED" do
+      ems.turn_off_loc_led(server, nil)
+    end
+  end
+end