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

@@ -47,20 +47,16 @@ 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
+      click_button "Create user"
     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
-        email.subject.should have_content("Account was created")
-        email.text_part.body.should have_content(user.email)
-        email.text_part.body.should have_content('password')
-      end
+      click_button "Create user"
+      user = User.last
+      email = ActionMailer::Base.deliveries.last
+      email.subject.should have_content("Account was created")
+      email.text_part.body.should have_content(user.email)
+      email.text_part.body.should have_content('password')
     end
   end

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
@@ -339,7 +335,7 @@ describe User do
       user.all_ssh_keys.should include(key.key)
     end
   end
-    
+
   describe :avatar_type do
     let(:user) { create(:user) }

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") }