Use instance methods for system_hooks_service

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/observers/system_hook_observer.rb

@@ -2,10 +2,16 @@ class SystemHookObserver < BaseObserver
   observe :user, :project, :users_project
 
   def after_create(model)
-    SystemHooksService.execute_hooks_for(model, :create)
+    system_hook_service.execute_hooks_for(model, :create)
   end
 
   def after_destroy(model)
-    SystemHooksService.execute_hooks_for(model, :destroy)
+    system_hook_service.execute_hooks_for(model, :destroy)
+  end
+
+  private
+
+  def system_hook_service
+    SystemHooksService.new
   end
 end

app/services/system_hooks_service.rb

 class SystemHooksService
-  def self.execute_hooks_for(model, event)
+  def execute_hooks_for(model, event)
     execute_hooks(build_event_data(model, event))
   end
 
   private
 
-  def self.execute_hooks(data)
+  def execute_hooks(data)
     SystemHook.all.each do |sh|
       async_execute_hook sh, data
     end
   end
 
-  def self.async_execute_hook(hook, data)
+  def async_execute_hook(hook, data)
     Sidekiq::Client.enqueue(SystemHookWorker, hook.id, data)
   end
 
-  def self.build_event_data(model, event)
+  def build_event_data(model, event)
     data = {
       event_name: build_event_name(model, event),
       created_at: model.created_at
@@ -51,7 +51,7 @@ class SystemHooksService
     end
   end
 
-  def self.build_event_name(model, event)
+  def build_event_name(model, event)
     case model
     when UsersProject
       return "user_add_to_team"      if event == :create

spec/services/system_hooks_service_spec.rb

@@ -24,10 +24,10 @@ describe SystemHooksService do
   end
 
   def event_data(*args)
-    SystemHooksService.build_event_data(*args)
+    SystemHooksService.new.send :build_event_data, *args
   end
 
   def event_name(*args)
-    SystemHooksService.build_event_name(*args)
+    SystemHooksService.new.send :build_event_name, *args
   end
 end