Add CustomButtonEvent model and emitter

app/models/custom_button.rb

@@ -88,11 +88,29 @@ def applies_to=(other)
     end
   end
 
-  def invoke(target)
+  def invoke(target, source = nil)
     args = resource_action.automate_queue_hash(target, {}, User.current_user)
+
+    publish_event(source, target, args)
     MiqQueue.put(queue_opts(target, args))
   end
 
+  def publish_event(source, target, args)
+    CustomButtonEvent.create(
+      :event_type => 'custom_button_event',
+      :message    => 'Custom button launched',
+      :source     => source,
+      :target     => target,
+      :user_id    => args[:user_id],
+      :group_id   => args[:miq_group_id],
+      :tenant_id  => args[:tenant_id],
+      :full_data  => {
+        :args                 => args,
+        :automate_entry_point => resource_action.ae_path
+      }
+    )
+  end
+
   def queue_opts(target, args)
     {
       :class_name  => 'MiqAeEngine',
@@ -104,13 +122,15 @@ def queue_opts(target, args)
     }
   end
 
-  def invoke_async(target)
+  def invoke_async(target, source = nil)
     task_opts = {
       :action => "Calling automate for user #{userid}",
       :userid => User.current_user
     }
 
     args = resource_action.automate_queue_hash(target, {}, User.current_user)
+
+    publish_event(source, target, args)
     MiqTask.generic_action_with_callback(task_opts, queue_opts(target, args))
   end
 

app/models/custom_button_event.rb

@@ -0,0 +1,2 @@
+class CustomButtonEvent < EventStream
+end

spec/models/custom_button_spec.rb

@@ -292,4 +292,36 @@
     button = FactoryGirl.create(:custom_button, :applies_to => service_template1)
     expect { button.copy(:applies_to => service_template2) }.to change { CustomButton.count }.by(1)
   end
+
+  context do
+    let(:vm)              { FactoryGirl.create(:vm_vmware) }
+    let(:user)            { FactoryGirl.create(:user_with_group) }
+    let(:resource_action) { FactoryGirl.create(:resource_action, :ae_namespace => 'SYSTEM', :ae_class => 'PROCESS', :ae_instance => 'Request') }
+    let(:custom_button)   { FactoryGirl.create(:custom_button, :applies_to => vm.class, :resource_action => resource_action) }
+
+    before do
+      EvmSpecHelper.local_miq_server(:is_master => true, :zone => Zone.seed)
+    end
+
+    %i(invoke invoke_async).each do |method|
+      describe "##{method}" do
+        it "publishes CustomButtonEvent" do
+          User.with_user(user) { custom_button.send(method, vm, 'UI') }
+
+          expect(CustomButtonEvent.count).to eq(1)
+          expect(CustomButtonEvent.first).to have_attributes(
+            :source      => 'UI',
+            :target_id   => vm.id,
+            :target_type => 'VmOrTemplate',
+            :type        => 'CustomButtonEvent',
+            :event_type  => 'custom_button_event',
+            :user_id     => user.id
+          )
+          expect(CustomButtonEvent.first[:full_data]).to include(
+            :automate_entry_point => "/SYSTEM/PROCESS/Request"
+          )
+        end
+      end
+    end
+  end
 end