Create namespace on username init. Raise exception if project cannot be moved

app/observers/project_observer.rb

 class ProjectObserver < ActiveRecord::Observer
   def after_save(project)
-    project.update_repository
-
     # Move repository if namespace changed
     if project.namespace_id_changed? and not project.new_record?
       old_dir = Namespace.find_by_id(project.namespace_id_was).try(:path) || ''
@@ -9,6 +7,9 @@ class ProjectObserver < ActiveRecord::Observer
       Gitlab::ProjectMover.new(project, old_dir, new_dir).execute
     end
+
+    # Update gitolite
+    project.update_repository
   end
   def after_destroy(project)

app/observers/user_observer.rb

@@ -12,8 +12,12 @@ class UserObserver < ActiveRecord::Observer
   end
   def after_save user
-    if user.username_changed? and user.namespace
-      user.namespace.update_attributes(path: user.username)
+    if user.username_changed?
+      if user.namespace
+        user.namespace.update_attributes(path: user.username)
+      else
+        user.create_namespace!(path: user.username, name: user.name)
+      end
     end
   end

lib/gitlab/project_mover.rb

@@ -3,6 +3,8 @@
 # Used for moving project repositories from one subdir to another
 module Gitlab
   class ProjectMover
+    class ProjectMoveError < StandardError; end
+
     attr_reader :project, :old_dir, :new_dir
     def initialize(project, old_dir, new_dir)
@@ -23,7 +25,9 @@ module Gitlab
         log_info "Project #{project.name} was moved from #{old_path} to #{new_path}"
         true
       else
-        log_info "Error! Project #{project.name} cannot be moved from #{old_path} to #{new_path}"
+        message = "Project #{project.name} cannot be moved from #{old_path} to #{new_path}"
+        log_info "Error! #{message}"
+        raise ProjectMoveError.new(message)
         false
       end
     end

lib/tasks/gitlab/activate_namespaces.rake

@@ -2,11 +2,15 @@ namespace :gitlab do
   desc "GITLAB | Enable usernames and namespaces for user projects"
   task activate_namespaces: :environment do
     User.find_each(batch_size: 500) do |user|
+      next if user.namespace
+
       User.transaction do
         username = user.email.match(/^[^@]*/)[0]
-        user.update_attributes!(username: username)
-        user.create_namespace!(code: username, name: user.name)
-        print '.'.green
+        if user.update_attributes!(username: username)
+          print '.'.green
+        else
+          print 'F'.red
+        end
       end
     end
   end