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# frozen_string_literal: true
module Gitlab
module Database
module RenameReservedPathsMigration
module V1
class RenameBase
attr_reader :paths, :migration
delegate :update_column_in_batches,
:execute,
:replace_sql,
:quote_string,
:say,
to: :migration
def initialize(paths, migration)
@paths = paths
@migration = migration
end
def path_patterns
@path_patterns ||= paths.flat_map { |path| ["%/#{path}", path] }
end
def rename_path_for_routable(routable)
old_path = routable.path
old_full_path = routable.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_routable_path(namespace_path, new_path)
perform_rename(routable, old_full_path, new_full_path)
[old_full_path, new_full_path]
end
def perform_rename(routable, old_full_path, new_full_path)
# skips callbacks & validations
new_path = new_full_path.split('/').last
routable.class.where(id: routable)
.update_all(path: new_path)
rename_routes(old_full_path, new_full_path)
end
def rename_routes(old_full_path, new_full_path)
routes = Route.arel_table
quoted_old_full_path = quote_string(old_full_path)
quoted_old_wildcard_path = quote_string("#{old_full_path}/%")
filter = if Database.mysql?
"lower(routes.path) = lower('#{quoted_old_full_path}') "\
"OR routes.path LIKE '#{quoted_old_wildcard_path}'"
else
"routes.id IN "\
"( SELECT routes.id FROM routes WHERE lower(routes.path) = lower('#{quoted_old_full_path}') "\
"UNION SELECT routes.id FROM routes WHERE routes.path ILIKE '#{quoted_old_wildcard_path}' )"
end
replace_statement = replace_sql(Route.arel_table[:path],
old_full_path,
new_full_path)
update = Arel::UpdateManager.new
.table(routes)
.set([[routes[:path], replace_statement]])
.where(Arel::Nodes::SqlLiteral.new(filter))
execute(update.to_sql)
end
def rename_path(namespace_path, path_was)
counter = 0
path = "#{path_was}#{counter}"
while route_exists?(join_routable_path(namespace_path, path))
counter += 1
path = "#{path_was}#{counter}"
end
path
end
def remove_last_occurrence(string, pattern)
string.reverse.sub(pattern.reverse, "").reverse
end
def join_routable_path(namespace_path, top_level)
if namespace_path.present?
File.join(namespace_path, top_level)
else
top_level
end
end
def route_exists?(full_path)
MigrationClasses::Route.where(Route.arel_table[:path].matches(full_path)).any?
end
def move_pages(old_path, new_path)
move_folders(pages_dir, old_path, new_path)
end
def move_uploads(old_path, new_path)
return unless file_storage?
move_folders(uploads_dir, old_path, new_path)
end
def move_folders(directory, old_relative_path, new_relative_path)
old_path = File.join(directory, old_relative_path)
unless File.directory?(old_path)
say "#{old_path} doesn't exist, skipping"
return
end
new_path = File.join(directory, new_relative_path)
FileUtils.mv(old_path, new_path)
end
def remove_cached_html_for_projects(project_ids)
project_ids.each do |project_id|
update_column_in_batches(:projects, :description_html, nil) do |table, query|
query.where(table[:id].eq(project_id))
end
update_column_in_batches(:issues, :description_html, nil) do |table, query|
query.where(table[:project_id].eq(project_id))
end
update_column_in_batches(:merge_requests, :description_html, nil) do |table, query|
query.where(table[:target_project_id].eq(project_id))
end
update_column_in_batches(:notes, :note_html, nil) do |table, query|
query.where(table[:project_id].eq(project_id))
end
update_column_in_batches(:milestones, :description_html, nil) do |table, query|
query.where(table[:project_id].eq(project_id))
end
end
end
def track_rename(type, old_path, new_path)
key = redis_key_for_type(type)
Gitlab::Redis::SharedState.with do |redis|
redis.lpush(key, [old_path, new_path].to_json)
redis.expire(key, 2.weeks.to_i)
end
say "tracked rename: #{key}: #{old_path} -> #{new_path}"
end
def reverts_for_type(type)
key = redis_key_for_type(type)
Gitlab::Redis::SharedState.with do |redis|
failed_reverts = []
while rename_info = redis.lpop(key)
path_before_rename, path_after_rename = JSON.parse(rename_info)
say "renaming #{type} from #{path_after_rename} back to #{path_before_rename}"
begin
yield(path_before_rename, path_after_rename)
rescue StandardError => e
failed_reverts << rename_info
say "Renaming #{type} from #{path_after_rename} back to "\
"#{path_before_rename} failed. Review the error and try "\
"again by running the `down` action. \n"\
"#{e.message}: \n #{e.backtrace.join("\n")}"
end
end
failed_reverts.each { |rename_info| redis.lpush(key, rename_info) }
end
end
def redis_key_for_type(type)
"rename:#{migration.name}:#{type}"
end
def file_storage?
CarrierWave::Uploader::Base.storage == CarrierWave::Storage::File
end
def uploads_dir
File.join(CarrierWave.root, "uploads")
end
def pages_dir
Settings.pages.path
end
end
end
end
end
end
|
