Move files for moved namespaces.

app/models/namespace.rb

@@ -58,10 +58,6 @@ class Namespace < ActiveRecord::Base
       where("name LIKE :query OR path LIKE :query", query: "%#{query}%")
     end
 
-    def global_id
-      'GLN'
-    end
-
     def clean_path(path)
       path.gsub!(/@.*\z/,             "")
       path.gsub!(/\.git\z/,           "")

db/migrate/20150324133047_remove_periods_at_ends_of_usernames.rb

 class RemovePeriodsAtEndsOfUsernames < ActiveRecord::Migration
+  include Gitlab::ShellAdapter
+
   class Namespace < ActiveRecord::Base
     class << self
       def by_path(path)
@@ -6,6 +8,7 @@ class RemovePeriodsAtEndsOfUsernames < ActiveRecord::Migration
       end
 
       def clean_path(path)
+        path = path.dup
         path.gsub!(/@.*\z/,             "")
         path.gsub!(/\.git\z/,           "")
         path.gsub!(/\A-/,               "")
@@ -25,15 +28,49 @@ class RemovePeriodsAtEndsOfUsernames < ActiveRecord::Migration
   end
 
   def up
+    changed_paths = {}
+
     select_all("SELECT id, username FROM users WHERE username LIKE '%.'").each do |user|
-      username = quote_string(Namespace.clean_path(user["username"]))
+      username_was = user["username"]
+      username = Namespace.clean_path(username_was)
+      changed_paths[username_was] = username
+
+      username = quote_string(username)
       execute "UPDATE users SET username = '#{username}' WHERE id = #{user["id"]}"
       execute "UPDATE namespaces SET path = '#{username}', name = '#{username}' WHERE type = NULL AND owner_id = #{user["id"]}"
     end
 
     select_all("SELECT id, path FROM namespaces WHERE type = 'Group' AND path LIKE '%.'").each do |group|
-      path = quote_string(Namespace.clean_path(group["path"]))
+      path_was = group["path"]
+      path = Namespace.clean_path(path_was)
+      changed_paths[path_was] = path
+
+      path = quote_string(path)
       execute "UPDATE namespaces SET path = '#{path}' WHERE id = #{group["id"]}"
     end
+
+    changed_paths.each do |path_was, path|
+      if gitlab_shell.mv_namespace(path_was, path)
+        # If repositories moved successfully we need to remove old satellites
+        # and send update instructions to users.
+        # However we cannot allow rollback since we moved namespace dir
+        # So we basically we mute exceptions in next actions
+        begin
+          gitlab_shell.rm_satellites(path_was)
+          # We cannot send update instructions since models and mailers
+          # can't safely be used from migrations as they may be written for 
+          # later versions of the database.
+          # send_update_instructions
+        rescue
+          # Returning false does not rollback after_* transaction but gives
+          # us information about failing some of tasks
+          false
+        end
+      else
+        # if we cannot move namespace directory we should rollback
+        # db changes in order to prevent out of sync between db and fs
+        raise Exception.new('namespace directory cannot be moved')
+      end
+    end
   end
 end

spec/models/namespace_spec.rb

@@ -33,8 +33,6 @@ describe Namespace do
     it { is_expected.to respond_to(:to_param) }
   end
 
-  it { expect(Namespace.global_id).to eq('GLN') }
-
   describe :to_param do
     it { expect(namespace.to_param).to eq(namespace.path) }
   end