Merge branch 'repo-size-in-db' into 'master'

Save repository size to projects table

This will allow us to get largest repos by simple sql query.

Also it increase loading of `admin/projects` page a lot because right now it calculate 20x project sizes per page

app/helpers/projects_helper.rb

@@ -163,7 +163,7 @@ module ProjectsHelper
   end
 
   def repository_size(project = nil)
-    "#{(project || @project).repository.size} MB"
+    "#{(project || @project).repository_size} MB"
   rescue
     # In order to prevent 500 error
     # when application cannot allocate memory

app/models/project.rb

@@ -562,4 +562,8 @@ class Project < ActiveRecord::Base
   def forked_from?(project)
     forked? && project == forked_from_project
   end
+
+  def update_repository_size
+    update_attribute(:repository_size, repository.size)
+  end
 end

app/services/git_push_service.rb

@@ -25,6 +25,7 @@ class GitPushService
 
     project.ensure_satellite_exists
     project.repository.expire_cache
+    project.update_repository_size
 
     if push_to_existing_branch?(ref, oldrev)
       project.update_merge_requests(oldrev, newrev, ref, @user)

db/migrate/20140502115131_add_repo_size_to_db.rb

+class AddRepoSizeToDb < ActiveRecord::Migration
+  def change
+    add_column :projects, :repository_size, :float, default: 0
+  end
+end

db/migrate/20140502125220_migrate_repo_size.rb

+class MigrateRepoSize < ActiveRecord::Migration
+  def up
+    Project.reset_column_information
+    Project.find_each(batch_size: 500) do |project|
+      begin
+        if project.empty_repo?
+          print '-'
+        else
+          project.update_repository_size
+          print '.'
+        end
+      rescue
+        print 'F'
+      end
+    end
+    puts 'Done'
+  end
+
+  def down
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20140428105831) do
+ActiveRecord::Schema.define(version: 20140502125220) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -222,6 +222,7 @@ ActiveRecord::Schema.define(version: 20140428105831) do
     t.integer  "visibility_level",       default: 0,        null: false
     t.boolean  "archived",               default: false,    null: false
     t.string   "import_status"
+    t.float    "repository_size",        default: 0.0
   end
 
   add_index "projects", ["creator_id"], name: "index_projects_on_creator_id", using: :btree