Revert "Revert disallowing usernames to end in period."

This reverts commit c75c6b840ba9ed82bb01eca52e968c2b0ec985e6.

1 files changed, 76 insertions, 0 deletions

diff --git a/db/migrate/20150324133047_remove_periods_at_ends_of_usernames.rb b/db/migrate/20150324133047_remove_periods_at_ends_of_usernames.rb
new file mode 100644
index 00000000000..dc38b0eceb7
--- /dev/null
+++ b/db/migrate/20150324133047_remove_periods_at_ends_of_usernames.rb
@@ -0,0 +1,76 @@
+class RemovePeriodsAtEndsOfUsernames < ActiveRecord::Migration
+  include Gitlab::ShellAdapter
+
+  class Namespace < ActiveRecord::Base
+    class << self
+      def find_by_path_or_name(path)
+        find_by("lower(path) = :path OR lower(name) = :path", path: path.downcase)
+      end
+
+      def clean_path(path)
+        path = path.dup
+        path.gsub!(/@.*\z/,             "")
+        path.gsub!(/\.git\z/,           "")
+        path.gsub!(/\A-+/,              "")
+        path.gsub!(/\.+\z/,             "")
+        path.gsub!(/[^a-zA-Z0-9_\-\.]/, "")
+
+        counter = 0
+        base = path
+        while Namespace.find_by_path_or_name(path)
+          counter += 1
+          path = "#{base}#{counter}"
+        end
+
+        path
+      end
+    end
+  end
+
+  def up
+    changed_paths = {}
+
+    select_all("SELECT id, username FROM users WHERE username LIKE '%.'").each do |user|
+      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 IS NULL AND owner_id = #{user["id"]}"
+    end
+
+    select_all("SELECT id, path FROM namespaces WHERE type = 'Group' AND path LIKE '%.'").each do |group|
+      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