The path parameter only accepts a string in the migration configuration and does not accept a callback parameter that is available in some other contributed source plugins. A callback is beneficial to provide logic such as changing file locations based on environments the migration is being ran or switching to using a test CSV file based on a Drupal configuration.
Attempt to configure a callback function in the migration YML throws Exception error "TypeError: file_exists(): Argument #1 ($filename) must be of type string, array given in file_exists()"
source:
plugin: csv
path:
callback: csv_migrate_callback_function
Modify the initializeIterator() to recognize that a callback is set for the path parameter and execute the function to set the path as a string.
Adding unit test coverage as needed.
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Active
3.6
Code