Data migration tool configuration

Question

I've installed the data migration tool (https://devdocs.magento.com/guides/v2.4/migration/migration-tool-configure.html).
Followed the steps to configure it by creating a separate module and everything works fine.
but from the looks of it, I need to keep the credentials to the magento 1 and magento 2 databases in the configuration file that I've cloned and modified from the tool code base.
This does not look like a valid approach if I want to version my config file. I rather not have the credentials available in a repo.
Is there an out of the box way of moving the credentials outside the config file?

Answer 1

The classes in the migration tool are instantiated via Object manager. This means they can be pluginized.

I ended up making an around plugin for each of the methods

• Migration\Config::getSource()
• Migration\Config::getDestination().

In these methods I read the Magento 1 db credentials from somewhere else and the magento 2 credentials from the env.php file of the instance where the migration tool is installed.

This way I can leave the credentials in the config file empty. But the tags have to be there, otherwise the migration tool complains