gitlab-org--gitlab-foss/db/migrate/20170316163800_rename_system_namespaces.rb
2017-06-21 13:48:12 +00:00

231 lines
6.4 KiB
Ruby

# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
class RenameSystemNamespaces < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
include Gitlab::ShellAdapter
disable_ddl_transaction!
class User < ActiveRecord::Base
self.table_name = 'users'
end
class Namespace < ActiveRecord::Base
self.table_name = 'namespaces'
belongs_to :parent, class_name: 'RenameSystemNamespaces::Namespace'
has_one :route, as: :source
has_many :children, class_name: 'RenameSystemNamespaces::Namespace', foreign_key: :parent_id
belongs_to :owner, class_name: 'RenameSystemNamespaces::User'
# Overridden to have the correct `source_type` for the `route` relation
def self.name
'Namespace'
end
def full_path
if route && route.path.present?
@full_path ||= route.path
else
update_route if persisted?
build_full_path
end
end
def build_full_path
if parent && path
parent.full_path + '/' + path
else
path
end
end
def update_route
prepare_route
route.save
end
def prepare_route
route || build_route(source: self)
route.path = build_full_path
route.name = build_full_name
@full_path = nil
@full_name = nil
end
def build_full_name
if parent && name
parent.human_name + ' / ' + name
else
name
end
end
def human_name
owner&.name
end
end
class Route < ActiveRecord::Base
self.table_name = 'routes'
belongs_to :source, polymorphic: true
end
class Project < ActiveRecord::Base
self.table_name = 'projects'
def repository_storage_path
Gitlab.config.repositories.storages[repository_storage]['path']
end
end
DOWNTIME = false
def up
return unless system_namespace
old_path = system_namespace.path
old_full_path = system_namespace.full_path
# Only remove the last occurrence of the path name to get the parent namespace path
namespace_path = remove_last_occurrence(old_full_path, old_path)
new_path = rename_path(namespace_path, old_path)
new_full_path = join_namespace_path(namespace_path, new_path)
Namespace.where(id: system_namespace).update_all(path: new_path) # skips callbacks & validations
replace_statement = replace_sql(Route.arel_table[:path], old_full_path, new_full_path)
route_matches = [old_full_path, "#{old_full_path}/%"]
update_column_in_batches(:routes, :path, replace_statement) do |table, query|
query.where(Route.arel_table[:path].matches_any(route_matches))
end
clear_cache_for_namespace(system_namespace)
# tasks here are based on `Namespace#move_dir`
move_repositories(system_namespace, old_full_path, new_full_path)
move_namespace_folders(uploads_dir, old_full_path, new_full_path) if file_storage?
move_namespace_folders(pages_dir, old_full_path, new_full_path)
end
def down
# nothing to do
end
def remove_last_occurrence(string, pattern)
string.reverse.sub(pattern.reverse, "").reverse
end
def move_namespace_folders(directory, old_relative_path, new_relative_path)
old_path = File.join(directory, old_relative_path)
return unless File.directory?(old_path)
new_path = File.join(directory, new_relative_path)
FileUtils.mv(old_path, new_path)
end
def move_repositories(namespace, old_full_path, new_full_path)
repo_paths_for_namespace(namespace).each do |repository_storage_path|
# Ensure old directory exists before moving it
gitlab_shell.add_namespace(repository_storage_path, old_full_path)
unless gitlab_shell.mv_namespace(repository_storage_path, old_full_path, new_full_path)
say "Exception moving path #{repository_storage_path} from #{old_full_path} to #{new_full_path}"
end
end
end
def rename_path(namespace_path, path_was)
counter = 0
path = "#{path_was}#{counter}"
while route_exists?(join_namespace_path(namespace_path, path))
counter += 1
path = "#{path_was}#{counter}"
end
path
end
def route_exists?(full_path)
Route.where(Route.arel_table[:path].matches(full_path)).any?
end
def join_namespace_path(namespace_path, path)
if namespace_path.present?
File.join(namespace_path, path)
else
path
end
end
def system_namespace
@system_namespace ||= Namespace.where(parent_id: nil)
.where(arel_table[:path].matches(system_namespace_path))
.first
end
def system_namespace_path
"system"
end
def clear_cache_for_namespace(namespace)
project_ids = projects_for_namespace(namespace).pluck(:id)
update_column_in_batches(:projects, :description_html, nil) do |table, query|
query.where(table[:id].in(project_ids))
end
update_column_in_batches(:issues, :description_html, nil) do |table, query|
query.where(table[:project_id].in(project_ids))
end
update_column_in_batches(:merge_requests, :description_html, nil) do |table, query|
query.where(table[:target_project_id].in(project_ids))
end
update_column_in_batches(:notes, :note_html, nil) do |table, query|
query.where(table[:project_id].in(project_ids))
end
update_column_in_batches(:milestones, :description_html, nil) do |table, query|
query.where(table[:project_id].in(project_ids))
end
end
def projects_for_namespace(namespace)
namespace_ids = child_ids_for_parent(namespace, ids: [namespace.id])
namespace_or_children = Project.arel_table[:namespace_id].in(namespace_ids)
Project.unscoped.where(namespace_or_children)
end
# This won't scale to huge trees, but it should do for a handful of namespaces
# called `system`.
def child_ids_for_parent(namespace, ids: [])
namespace.children.each do |child|
ids << child.id
child_ids_for_parent(child, ids: ids) if child.children.any?
end
ids
end
def repo_paths_for_namespace(namespace)
projects_for_namespace(namespace).distinct
.select(:repository_storage).map(&:repository_storage_path)
end
def uploads_dir
File.join(Rails.root, "public", "uploads")
end
def pages_dir
Settings.pages.path
end
def file_storage?
CarrierWave::Uploader::Base.storage == CarrierWave::Storage::File
end
def arel_table
Namespace.arel_table
end
end