92 lines
3.3 KiB
Ruby
92 lines
3.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module Gitlab
|
|
module Database
|
|
module Migrations
|
|
class Runner
|
|
BASE_RESULT_DIR = Rails.root.join('tmp', 'migration-testing').freeze
|
|
|
|
class << self
|
|
def up
|
|
Runner.new(direction: :up, migrations: migrations_for_up, result_dir: BASE_RESULT_DIR.join('up'))
|
|
end
|
|
|
|
def down
|
|
Runner.new(direction: :down, migrations: migrations_for_down, result_dir: BASE_RESULT_DIR.join('down'))
|
|
end
|
|
|
|
def migration_context
|
|
@migration_context ||= ApplicationRecord.connection.migration_context
|
|
end
|
|
|
|
private
|
|
|
|
def migrations_for_up
|
|
existing_versions = migration_context.get_all_versions.to_set
|
|
|
|
migration_context.migrations.reject do |migration|
|
|
existing_versions.include?(migration.version)
|
|
end
|
|
end
|
|
|
|
def migration_file_names_this_branch
|
|
`git diff --name-only origin/HEAD...HEAD db/post_migrate db/migrate`.split("\n")
|
|
end
|
|
|
|
def migrations_for_down
|
|
versions_this_branch = migration_file_names_this_branch.map do |m_name|
|
|
m_name.match(%r{^db/(post_)?migrate/(\d+)}) { |m| m.captures[1]&.to_i }
|
|
end.to_set
|
|
|
|
existing_versions = migration_context.get_all_versions.to_set
|
|
migration_context.migrations.select do |migration|
|
|
existing_versions.include?(migration.version) && versions_this_branch.include?(migration.version)
|
|
end
|
|
end
|
|
end
|
|
|
|
attr_reader :direction, :result_dir, :migrations
|
|
|
|
delegate :migration_context, to: :class
|
|
|
|
def initialize(direction:, migrations:, result_dir:)
|
|
raise "Direction must be up or down" unless %i[up down].include?(direction)
|
|
|
|
@direction = direction
|
|
@migrations = migrations
|
|
@result_dir = result_dir
|
|
end
|
|
|
|
def run
|
|
FileUtils.mkdir_p(result_dir)
|
|
|
|
verbose_was = ActiveRecord::Migration.verbose
|
|
ActiveRecord::Migration.verbose = true
|
|
|
|
sorted_migrations = migrations.sort_by(&:version)
|
|
sorted_migrations.reverse! if direction == :down
|
|
|
|
instrumentation = Instrumentation.new(result_dir: result_dir)
|
|
|
|
sorted_migrations.each do |migration|
|
|
instrumentation.observe(version: migration.version, name: migration.name, connection: ActiveRecord::Migration.connection) do
|
|
ActiveRecord::Migrator.new(direction, migration_context.migrations, migration_context.schema_migration, migration.version).run
|
|
end
|
|
end
|
|
ensure
|
|
if instrumentation
|
|
File.open(File.join(result_dir, Gitlab::Database::Migrations::Instrumentation::STATS_FILENAME), 'wb+') do |io|
|
|
io << instrumentation.observations.to_json
|
|
end
|
|
end
|
|
|
|
# We clear the cache here to mirror the cache clearing that happens at the end of `db:migrate` tasks
|
|
# This clearing makes subsequent rake tasks in the same execution pick up database schema changes caused by
|
|
# the migrations that were just executed
|
|
ApplicationRecord.clear_cache!
|
|
ActiveRecord::Migration.verbose = verbose_was
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|