Added repository_update hook

app/models/hooks/system_hook.rb

 class SystemHook < WebHook
+  scope :repository_update_hooks, ->  { where(repository_update_events: true) }
+
   def async_execute(data, hook_name)
     Sidekiq::Client.enqueue(SystemHookWorker, id, data, hook_name)
   end

app/models/hooks/web_hook.rb

@@ -10,6 +10,7 @@ class WebHook < ActiveRecord::Base
   default_value_for :tag_push_events, false
   default_value_for :build_events, false
   default_value_for :pipeline_events, false
+  default_value_for :repository_update_events, false
   default_value_for :enable_ssl_verification, true
 
   scope :push_hooks, -> { where(push_events: true) }

app/workers/post_receive.rb

@@ -20,13 +20,32 @@ class PostReceive
       # Nothing defined here yet.
     else
       process_project_changes(post_received)
+      process_repository_update(post_received)
     end
   end
 
-  def process_project_changes(post_received)
-    post_received.changes.each do |change|
-      oldrev, newrev, ref = change.strip.split(' ')
+  def process_repository_update(post_received)
+    changes = []
+    refs = Set.new
+
+    post_received.changes_refs do |oldrev, newrev, ref|
+      @user ||= post_received.identify(newrev)
 
+      unless @user
+        log("Triggered hook for non-existing user \"#{post_received.identifier}\"")
+        return false
+      end
+
+      changes << Gitlab::DataBuilder::Repository.single_change(oldrev, newrev, ref)
+      refs << ref
+    end
+
+    hook_data = Gitlab::DataBuilder::Repository.update(post_received.project, @user, changes, refs.to_a)
+    SystemHooksService.new.execute_hooks(hook_data, :repository_update_hooks)
+  end
+
+  def process_project_changes(post_received)
+    post_received.changes_refs do |oldrev, newrev, ref|
       @user ||= post_received.identify(newrev)
 
       unless @user

db/migrate/20170503023315_add_repository_update_events_to_web_hooks.rb

+class AddRepositoryUpdateEventsToWebHooks < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_column_with_default :web_hooks, :repository_update_events, :boolean, default: false, allow_null: false
+  end
+
+  def down
+    remove_column :web_hooks, :repository_update_events
+  end
+end

db/schema.rb

@@ -1404,6 +1404,7 @@ ActiveRecord::Schema.define(version: 20170508190732) do
     t.string "token"
     t.boolean "pipeline_events", default: false, null: false
     t.boolean "confidential_issues_events", default: false, null: false
+    t.boolean "repository_update_events", default: false, null: false
   end
 
   add_index "web_hooks", ["project_id"], name: "index_web_hooks_on_project_id", using: :btree

lib/gitlab/data_builder/repository.rb

+module Gitlab
+  module DataBuilder
+    module Repository
+      extend self
+
+      # Produce a hash of post-receive data
+      def update(project, user, changes, refs)
+        {
+          event_name: 'repository_update',
+
+          user_id: user.id,
+          user_name: user.name,
+          user_email: user.email,
+          user_avatar: user.avatar_url,
+
+          project_id: project.id,
+          project: project.hook_attrs,
+
+          changes: changes,
+
+          refs: refs
+        }
+      end
+
+      # Produce a hash of partial data for a single change
+      def single_change(oldrev, newrev, ref)
+        {
+          before: oldrev,
+          after: newrev,
+          ref: ref
+        }
+      end
+    end
+  end
+end

lib/gitlab/git_post_receive.rb

@@ -13,6 +13,16 @@ module Gitlab
       super(identifier, project, revision)
     end
 
+    def changes_refs
+      return enum_for(:changes_refs) unless block_given?
+
+      changes.each do |change|
+        oldrev, newrev, ref = change.strip.split(' ')
+
+        yield oldrev, newrev, ref
+      end
+    end
+
     private
 
     def deserialize_changes(changes)

spec/lib/gitlab/import_export/safe_model_attributes.yml

@@ -317,6 +317,7 @@ ProjectHook:
 - token
 - group_id
 - confidential_issues_events
+- repository_update_events
 ProtectedBranch:
 - id
 - project_id

spec/models/hooks/system_hook_spec.rb

@@ -105,4 +105,12 @@ describe SystemHook, models: true do
       ).once
     end
   end
+
+  describe '.repository_update_hooks' do
+    it 'returns hooks for repository update events only' do
+      hook = create(:system_hook, repository_update_events: true)
+      create(:system_hook, repository_update_events: false)
+      expect(SystemHook.repository_update_hooks).to eq([hook])
+    end
+  end
 end

spec/workers/post_receive_spec.rb

@@ -9,7 +9,7 @@ describe PostReceive do
   let(:key) { create(:key, user: project.owner) }
   let(:key_id) { key.shell_id }
 
-  context "as a resque worker" do
+  context "as a sidekiq worker" do
     it "reponds to #perform" do
       expect(described_class.new).to respond_to(:perform)
     end
@@ -93,6 +93,27 @@ describe PostReceive do
     end
   end
 
+  describe '#process_repository_update' do
+    let(:changes) {'123456 789012 refs/heads/tést'}
+    let(:fake_hook_data) do
+      { event_name: 'repository_update' }
+    end
+
+    before do
+      allow_any_instance_of(Gitlab::GitPostReceive).to receive(:identify).and_return(project.owner)
+      allow_any_instance_of(Gitlab::DataBuilder::Repository).to receive(:update).and_return(fake_hook_data)
+      # silence hooks so we can isolate
+      allow_any_instance_of(Key).to receive(:post_create_hook).and_return(true)
+      allow(subject).to receive(:process_project_changes).and_return(true)
+    end
+
+    it 'calls SystemHooksService' do
+      expect_any_instance_of(SystemHooksService).to receive(:execute_hooks).with(fake_hook_data, :repository_update_hooks).and_return(true)
+
+      subject.perform(pwd(project), key_id, base64_changes)
+    end
+  end
+
   context "webhook" do
     it "fetches the correct project" do
       expect(Project).to receive(:find_by).with(id: project.id.to_s)