WIP

app/models/ci/build.rb

@@ -30,7 +30,6 @@ module Ci
     LAZY_ATTRIBUTES = ['trace']
 
     belongs_to :commit, class_name: 'Ci::Commit'
-    belongs_to :project, class_name: 'Ci::Project'
     belongs_to :runner, class_name: 'Ci::Runner'
     belongs_to :trigger_request, class_name: 'Ci::TriggerRequest'
 
@@ -137,7 +136,7 @@ module Ci
       state :canceled, value: 'canceled'
     end
 
-    delegate :sha, :short_sha, :before_sha, :ref,
+    delegate :sha, :short_sha, :before_sha, :ref, :project,
       to: :commit, prefix: false
 
     def trace_html

app/models/ci/commit.rb

@@ -19,7 +19,7 @@ module Ci
   class Commit < ActiveRecord::Base
     extend Ci::Model
 
-    belongs_to :project, class_name: 'Ci::Project'
+    belongs_to :gl_project, class_name: '::Project', foreign_key: :gl_project_id
     has_many :builds, dependent: :destroy, class_name: 'Ci::Build'
     has_many :trigger_requests, dependent: :destroy, class_name: 'Ci::TriggerRequest'
 
@@ -32,6 +32,10 @@ module Ci
       sha[0...8]
     end
 
+    def project
+      @project ||= gl_project.gitlab_ci_project
+    end
+
     def to_param
       sha
     end

app/models/ci/project.rb

@@ -33,7 +33,7 @@ module Ci
 
     belongs_to :gl_project, class_name: '::Project', foreign_key: :gitlab_id
 
-    has_many :commits, ->() { order('CASE WHEN ci_commits.committed_at IS NULL THEN 0 ELSE 1 END', :committed_at, :id) }, dependent: :destroy, class_name: 'Ci::Commit'
+    has_many :commits, through: :gl_project, class_name: 'Ci::Commit', foreign_key: :gl_project_id
     has_many :builds, through: :commits, dependent: :destroy, class_name: 'Ci::Build'
     has_many :runner_projects, dependent: :destroy, class_name: 'Ci::RunnerProject'
     has_many :runners, through: :runner_projects, class_name: 'Ci::Runner'
@@ -41,7 +41,7 @@ module Ci
     has_many :events, dependent: :destroy, class_name: 'Ci::Event'
     has_many :variables, dependent: :destroy, class_name: 'Ci::Variable'
     has_many :triggers, dependent: :destroy, class_name: 'Ci::Trigger'
-    has_one :last_commit, -> { order 'ci_commits.created_at DESC' }, class_name: 'Ci::Commit'
+    has_one :last_commit, through: :gl_project, class_name: 'Ci::Commit'
 
     # Project services
     has_many :services, dependent: :destroy, class_name: 'Ci::Service'

app/models/project.rb

@@ -118,6 +118,8 @@ class Project < ActiveRecord::Base
   has_many :deploy_keys, through: :deploy_keys_projects
   has_many :users_star_projects, dependent: :destroy
   has_many :starrers, through: :users_star_projects, source: :user
+  has_many :commits, ->() { order('CASE WHEN ci_commits.committed_at IS NULL THEN 0 ELSE 1 END', :committed_at, :id) }, dependent: :destroy, class_name: 'Ci::Commit', foreign_key: :gl_project_id
+  has_one :last_commit, -> { order 'ci_commits.created_at DESC' }, class_name: 'Ci::Commit', foreign_key: :gl_project_id
 
   has_one :import_data, dependent: :destroy, class_name: "ProjectImportData"
   has_one :gitlab_ci_project, dependent: :destroy, class_name: "Ci::Project", foreign_key: :gitlab_id

db/migrate/20150924125150_add_project_id_to_ci_tables.rb

+class AddProjectIdToCiTables < ActiveRecord::Migration
+  def up
+    add_column :ci_builds, :gl_project_id, :integer
+    add_column :ci_commits, :gl_project_id, :integer
+    add_column :ci_events, :gl_project_id, :integer
+    add_column :ci_runner_projects, :gl_project_id, :integer
+    add_column :ci_services, :gl_project_id, :integer
+    add_column :ci_triggers, :gl_project_id, :integer
+    add_column :ci_variables, :gl_project_id, :integer
+    add_column :ci_web_hooks, :gl_project_id, :integer
+  end
+end

db/migrate/20150924125436_migrate_project_id_for_ci_tables.rb

+class MigrateProjectIdForCiTables < ActiveRecord::Migration
+  TABLES = %w(ci_builds ci_commits ci_events ci_runner_projects
+    ci_services ci_triggers ci_variables ci_web_hooks)
+
+  def up
+    TABLES.each do |table|
+      execute(
+        "UPDATE #{table} " +
+          "JOIN ci_projects ON ci_projects.id = #{table}.project_id " +
+          "SET gl_project_id=ci_projects.gitlab_id " +
+          "WHERE gl_project_id IS NULL"
+      )
+    end
+  end
+end

db/migrate/20150924131004_add_ci_fields_to_projects_table.rb

+class AddCiFieldsToProjectsTable < ActiveRecord::Migration
+  def up
+    add_column :projects, :shared_runners_enabled, :boolean, default: false
+  end
+end