def transaction(options = {})
options.assert_valid_keys :requires_new, :joinable
last_transaction_joinable = defined?(@transaction_joinable) ? @transaction_joinable : nil
if options.has_key?(:joinable)
@transaction_joinable = options[:joinable]
else
@transaction_joinable = true
end
requires_new = options[:requires_new] || !last_transaction_joinable
transaction_open = false
@_current_transaction_records ||= []
begin
if block_given?
if requires_new || open_transactions == 0
if open_transactions == 0
begin_db_transaction
elsif requires_new
create_savepoint
end
increment_open_transactions
transaction_open = true
@_current_transaction_records.push([])
end
yield
end
rescue Exception => database_transaction_rollback
if transaction_open && !outside_transaction?
transaction_open = false
decrement_open_transactions
if open_transactions == 0
rollback_db_transaction
rollback_transaction_records(true)
else
rollback_to_savepoint
rollback_transaction_records(false)
end
end
raise unless database_transaction_rollback.is_a?(ActiveRecord::Rollback)
end
ensure
@transaction_joinable = last_transaction_joinable
if outside_transaction?
@open_transactions = 0
elsif transaction_open
decrement_open_transactions
begin
if open_transactions == 0
commit_db_transaction
commit_transaction_records
else
release_savepoint
save_point_records = @_current_transaction_records.pop
unless save_point_records.blank?
@_current_transaction_records.push([]) if @_current_transaction_records.empty?
@_current_transaction_records.last.concat(save_point_records)
end
end
rescue Exception => database_transaction_rollback
if open_transactions == 0
rollback_db_transaction
rollback_transaction_records(true)
else
rollback_to_savepoint
rollback_transaction_records(false)
end
raise
end
end
end