Remove rails observers from application

Gemfile

@@ -11,7 +11,6 @@ end
 gem "rails", "~> 4.1.0"
 
 gem "protected_attributes"
-gem 'rails-observers'
 
 # Make links from text
 gem 'rails_autolink', '~> 1.1'

Gemfile.lock

@@ -365,8 +365,6 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 4.1.1)
       sprockets-rails (~> 2.0)
-    rails-observers (0.1.2)
-      activemodel (~> 4.0)
     rails_autolink (1.1.6)
       rails (> 3.1)
     rails_best_practices (1.14.4)
@@ -644,7 +642,6 @@ DEPENDENCIES
   rack-cors
   rack-mini-profiler
   rails (~> 4.1.0)
-  rails-observers
   rails_autolink (~> 1.1)
   rails_best_practices
   raphael-rails (~> 2.1.2)

app/models/users_project.rb

@@ -37,6 +37,10 @@ class UsersProject < ActiveRecord::Base
   scope :in_projects, ->(projects) { where(project_id: projects.map { |p| p.id }) }
   scope :with_user, ->(user) { where(user_id: user.id) }
 
+  after_create :post_create_hook
+  after_update :post_update_hook
+  after_destroy :post_destroy_hook
+
   class << self
 
     # Add users to project teams with passed access option
@@ -114,4 +118,37 @@ class UsersProject < ActiveRecord::Base
   def owner?
     project.owner == user
   end
+
+  def post_create_hook
+    Event.create(
+      project_id: self.project.id,
+      action: Event::JOINED,
+      author_id: self.user.id
+    )
+
+    notification_service.new_team_member(self)
+    system_hook_service.execute_hooks_for(self, :create)
+  end
+
+  def post_update_hook
+    notification_service.update_team_member(self) if self.project_access_changed?
+  end
+
+  def post_destroy_hook
+    Event.create(
+      project_id: self.project.id,
+      action: Event::LEFT,
+      author_id: self.user.id
+    )
+
+    system_hook_service.execute_hooks_for(self, :destroy)
+  end
+
+  def notification_service
+    NotificationService.new
+  end
+
+  def system_hook_service
+    SystemHooksService.new
+  end
 end

app/observers/base_observer.rb

-class BaseObserver < ActiveRecord::Observer
-  def notification
-    NotificationService.new
-  end
-
-  def event_service
-    EventCreateService.new
-  end
-
-  def log_info message
-    Gitlab::AppLogger.info message
-  end
-
-  def system_hook_service
-    SystemHooksService.new
-  end
-end

app/observers/users_project_observer.rb

-class UsersProjectObserver < BaseObserver
-  def after_create(users_project)
-    Event.create(
-      project_id: users_project.project.id,
-      action: Event::JOINED,
-      author_id: users_project.user.id
-    )
-
-    notification.new_team_member(users_project)
-    system_hook_service.execute_hooks_for(users_project, :create)
-  end
-
-  def after_update(users_project)
-    notification.update_team_member(users_project) if users_project.project_access_changed?
-  end
-
-  def after_destroy(users_project)
-    Event.create(
-      project_id: users_project.project.id,
-      action: Event::LEFT,
-      author_id: users_project.user.id
-    )
-    system_hook_service.execute_hooks_for(users_project, :destroy)
-  end
-end

config/application.rb

@@ -18,9 +18,6 @@ module Gitlab
     # :all can be used as a placeholder for all plugins not explicitly named.
     # config.plugins = [ :exception_notification, :ssl_requirement, :all ]
 
-    # Activate observers that should always be running.
-    config.active_record.observers = :users_project_observer
-
     # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
     # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
     # config.time_zone = 'Central Time (US & Canada)'

spec/features/admin/admin_users_spec.rb

@@ -47,13 +47,10 @@ describe "Admin::Users", feature: true  do
     it "should call send mail" do
       Notify.should_receive(:new_user_email)
 
-      User.observers.enable :user_observer do
       click_button "Create user"
     end
-    end
 
     it "should send valid email to user with email & password" do
-      User.observers.enable :user_observer do
       click_button "Create user"
       user = User.last
       email = ActionMailer::Base.deliveries.last
@@ -62,7 +59,6 @@ describe "Admin::Users", feature: true  do
       email.text_part.body.should have_content('password')
     end
   end
-  end
 
   describe "GET /admin/users/:id" do
     before do

spec/features/profile_spec.rb

 require 'spec_helper'
 
 describe "Profile account page", feature: true do
-  before(:each) { enable_observers }
-  after(:each) {disable_observers}
   let(:user) { create(:user) }
 
   before do

spec/features/projects_spec.rb

 require 'spec_helper'
 
 describe "Projects", feature: true  do
-  before(:each) { enable_observers }
-  after(:each) {disable_observers}
   before { login_as :user }
 
   describe "DELETE /projects/:id" do

spec/features/search_spec.rb

@@ -2,7 +2,6 @@ require 'spec_helper'
 
 describe "Search", feature: true  do
   before do
-    ActiveRecord::Base.observers.enable(:user_observer)
     login_as :user
     @project = create(:project, namespace: @user.namespace)
     @project.team << [@user, :reporter]

spec/models/project_spec.rb

@@ -27,9 +27,6 @@
 require 'spec_helper'
 
 describe Project do
-  before { enable_observers }
-  after { disable_observers }
-
   describe "Associations" do
     it { should belong_to(:group) }
     it { should belong_to(:namespace) }

spec/models/system_hook_spec.rb

@@ -19,8 +19,6 @@ require "spec_helper"
 
 describe SystemHook do
   describe "execute" do
-    before(:each) { ActiveRecord::Base.observers.enable(:all) }
-
     before(:each) do
       @system_hook = create(:system_hook)
       WebMock.stub_request(:post, @system_hook.url)

spec/models/user_spec.rb

@@ -145,7 +145,6 @@ describe User do
 
   describe 'projects' do
     before do
-      ActiveRecord::Base.observers.enable(:user_observer)
       @user = create :user
       @project = create :project, namespace: @user.namespace
       @project_2 = create :project, group: create(:group) # Grant MASTER access to the user
@@ -168,7 +167,6 @@ describe User do
 
   describe 'groups' do
     before do
-      ActiveRecord::Base.observers.enable(:user_observer)
       @user = create :user
       @group = create :group
       @group.add_owner(@user)
@@ -181,7 +179,6 @@ describe User do
 
   describe 'group multiple owners' do
     before do
-      ActiveRecord::Base.observers.enable(:user_observer)
       @user = create :user
       @user2 = create :user
       @group = create :group
@@ -195,7 +192,6 @@ describe User do
 
   describe 'namespaced' do
     before do
-      ActiveRecord::Base.observers.enable(:user_observer)
       @user = create :user
       @project = create :project, namespace: @user.namespace
     end

spec/observers/users_project_observer_spec.rb

-require 'spec_helper'
-
-describe UsersProjectObserver do
-  before(:each) { enable_observers }
-  after(:each) { disable_observers }
-
-  let(:user) { create(:user) }
-  let(:project) { create(:project) }
-  subject { UsersProjectObserver.instance }
-  before { subject.stub(notification: double('NotificationService').as_null_object) }
-
-  describe "#after_update" do
-    before do
-      @users_project = create :users_project
-    end
-
-    it "should called when UsersProject updated" do
-      subject.should_receive(:after_update)
-      @users_project.update_attribute(:project_access, UsersProject::MASTER)
-    end
-
-    it "should send email to user" do
-      subject.should_receive(:notification)
-      @users_project.update_attribute(:project_access, UsersProject::OWNER)
-    end
-
-    it "should not called after UsersProject destroyed" do
-      subject.should_not_receive(:after_update)
-      @users_project.destroy
-    end
-  end
-
-  describe "#after_destroy" do
-    before do
-      @users_project = create :users_project
-    end
-
-    it "should called when UsersProject destroyed" do
-      subject.should_receive(:after_destroy)
-      @users_project.destroy
-    end
-
-    it "should create new event" do
-      Event.should_receive(:create)
-      @users_project.destroy
-    end
-  end
-
-  describe "#after_create" do
-    it "should send email to user" do
-      subject.should_receive(:notification)
-      Event.stub(create: true)
-
-      create(:users_project)
-    end
-
-    it "should create new event" do
-      Event.should_receive(:create)
-
-      create(:users_project)
-    end
-  end
-end

spec/requests/api/branches_spec.rb

@@ -3,8 +3,6 @@ require 'mime/types'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { enable_observers }
-  after(:each) {disable_observers}
 
   let(:user) { create(:user) }
   let(:user2) { create(:user) }

spec/requests/api/commits_spec.rb

@@ -3,9 +3,6 @@ require 'mime/types'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { enable_observers }
-  after(:each) {disable_observers}
-
   let(:user) { create(:user) }
   let(:user2) { create(:user) }
   let!(:project) { create(:project, creator_id: user.id) }

spec/requests/api/files_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   let(:user) { create(:user) }
   let!(:project) { create(:project, namespace: user.namespace ) }
   before { project.team << [user, :developer] }

spec/requests/api/internal_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   let(:user) { create(:user) }
   let(:key) { create(:key, user: user) }
   let(:project) { create(:project) }

spec/requests/api/issues_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   let(:user) { create(:user) }
   let!(:project) { create(:project, namespace: user.namespace ) }
   let!(:issue) { create(:issue, author: user, assignee: user, project: project) }

spec/requests/api/merge_requests_spec.rb

@@ -2,8 +2,6 @@ require "spec_helper"
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
   let(:user) { create(:user) }
   let!(:project) {create(:project, creator_id: user.id, namespace: user.namespace) }
   let!(:merge_request) { create(:merge_request, :simple, author: user, assignee: user, source_project: project, target_project: project, title: "Test") }

spec/requests/api/milestones_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { enable_observers }
-  after(:each) {disable_observers}
-
   let(:user) { create(:user) }
   let!(:project) { create(:project, namespace: user.namespace ) }
   let!(:milestone) { create(:milestone, project: project) }
@@ -92,9 +89,6 @@ describe API::API, api: true  do
   end
 
   describe "PUT /projects/:id/milestones/:milestone_id to test observer on close" do
-    before { enable_observers }
-    after { disable_observers }
-
     it "should create an activity event when an milestone is closed" do
       Event.should_receive(:create)
 

spec/requests/api/namespaces_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   let(:admin) { create(:admin) }
   let!(:group1) { create(:group) }
   let!(:group2) { create(:group) }

spec/requests/api/notes_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   let(:user) { create(:user) }
   let!(:project) { create(:project, namespace: user.namespace ) }
   let!(:issue) { create(:issue, project: project, author: user) }
@@ -128,14 +125,10 @@ describe API::API, api: true  do
   end
 
   describe "POST /projects/:id/noteable/:noteable_id/notes to test observer on create" do
-    before { enable_observers }
-    after { disable_observers }
-
     it "should create an activity event when an issue note is created" do
       Event.should_receive(:create)
 
       post api("/projects/#{project.id}/issues/#{issue.id}/notes", user), body: 'hi!'
     end
   end
-
 end

spec/requests/api/project_hooks_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, 'ProjectHooks', api: true  do
   include ApiHelpers
-  before(:each) { enable_observers }
-  after(:each) { disable_observers }
-
   let(:user) { create(:user) }
   let(:user3) { create(:user) }
   let!(:project) { create(:project, creator_id: user.id, namespace: user.namespace) }

spec/requests/api/project_members_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { enable_observers }
-  after(:each) { disable_observers }
-
   let(:user) { create(:user) }
   let(:user2) { create(:user) }
   let(:user3) { create(:user) }

spec/requests/api/projects_spec.rb

@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { enable_observers }
-  after(:each) { disable_observers }
-
   let(:user) { create(:user) }
   let(:user2) { create(:user) }
   let(:user3) { create(:user) }

spec/requests/api/repositories_spec.rb

@@ -3,9 +3,6 @@ require 'mime/types'
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { enable_observers }
-  after(:each) {disable_observers}
-
   let(:user) { create(:user) }
   let(:user2) { create(:user) }
   let!(:project) { create(:project, creator_id: user.id) }

spec/requests/api/services_spec.rb

@@ -2,9 +2,6 @@ require "spec_helper"
 
 describe API::API, api: true  do
   include ApiHelpers
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   let(:user) { create(:user) }
   let(:project) {create(:project, creator_id: user.id, namespace: user.namespace) }
 

spec/services/issues/bulk_update_context_spec.rb

 require 'spec_helper'
 
 describe Issues::BulkUpdateService do
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   let(:issue) {
     create(:issue, project: @project)
   }

spec/services/projects/create_service_spec.rb

 require 'spec_helper'
 
 describe Projects::CreateService do
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   describe :create_by_user do
     before do
       @user = create :user

spec/services/projects/image_service_spec.rb

 require 'spec_helper'
 
 describe Projects::ImageService do
-  before(:each) { enable_observers }
-  after(:each) { disable_observers }
-
   describe 'Image service' do
     before do
       @user = create :user

spec/services/projects/transfer_service_spec.rb

 require 'spec_helper'
 
 describe Projects::TransferService do
-  before(:each) { enable_observers }
-  after(:each) {disable_observers}
-
   let(:user) { create(:user) }
   let(:group) { create(:group) }
   let(:group2) { create(:group) }

spec/services/projects/update_service_spec.rb

 require 'spec_helper'
 
 describe Projects::UpdateService do
-  before(:each) { ActiveRecord::Base.observers.enable(:user_observer) }
-  after(:each) { ActiveRecord::Base.observers.disable(:user_observer) }
-
   describe :update_by_user do
     before do
       @user = create :user

spec/spec_helper.rb

@@ -43,7 +43,7 @@ RSpec.configure do |config|
   # instead of true.
 
   config.before(:suite) do
-    TestEnv.init(observers: false, init_repos: true, repos: false)
+    TestEnv.init(init_repos: true, repos: false)
   end
   config.before(:each) do
     TestEnv.setup_stubs

spec/support/login_helpers.rb

@@ -3,9 +3,7 @@ module LoginHelpers
   #
   # role - User role (e.g., :admin, :user)
   def login_as(role)
-    ActiveRecord::Base.observers.enable(:user_observer) do
     @user = create(role)
-    end
 
     login_with(@user)
   end

spec/support/test_env.rb

@@ -17,14 +17,6 @@ module TestEnv
   def init(opts = {})
     RSpec::Mocks::setup(self)
 
-    # Disable observers to improve test speed
-    #
-    # You can enable it in whole test case where needed by next string:
-    #
-    #   before(:each) { enable_observers }
-    #
-    disable_observers if opts[:observers] == false
-
     # Disable mailer for spinach tests
     disable_mailer if opts[:mailer] == false
     setup_stubs
@@ -33,14 +25,6 @@ module TestEnv
     setup_test_repos(opts) if opts[:repos] == true
   end
 
-  def enable_observers
-    ActiveRecord::Base.observers.enable(:all)
-  end
-
-  def disable_observers
-    ActiveRecord::Base.observers.disable(:all)
-  end
-
   def disable_mailer
     NotificationService.any_instance.stub(mailer: double.as_null_object)
   end
@@ -89,10 +73,6 @@ module TestEnv
     Repository.any_instance.stub(
       size: 12.45
     )
-
-    BaseObserver.any_instance.stub(
-      current_user: double("current_user", id: 1)
-    )
   end
 
   def clear_repo_dir(namespace, name)