Last updated June 29, 2018

Process plugins manipulate data during the transform phase of the ETL process while the data is being moved from the source to the destination. Drupal core provides a handful of common process plugins that can be used to perform the majority of data transformation tasks. If you need some functionality beyond what is already provided you can write your own custom process plugins.

In this tutorial we'll:

  • Examine the role that process plugins fullfil
  • Understand the processing pipeline
  • List the existing process plugins in Drupal core and what each one does
  • Better understand when you might need to write your own process plugin

By the end of this tutorial you should be able to explain what process plugins do, and understand how you'll make use of them in your own migration.