migrate tools

Poor Man's XHProf profiling of Drupal 8 Migrations and Drush commands

On a recent project, there was a Migration run that took a very long time, and I couldn't pinpoint why; there were multiple migrations, and none of the others took very long at all (usually processing at least hundreds if not thousands of nodes per minute). In Drupal 7, if you enabled the XHProf module, then you'd get a checkbox on the configuration page that would turn on profiling for all page requests and Drush commands.

In Drupal 8, the XHProf module was completely rewritten, and as a side effect, the Drush/CLI profiling functionality is not yet present (see: Profile drush/CLI with XHProf in Drupal 8).

Since I don't have the time right now to help figure out how to get things working through the official XHProf module, I decided to use a 'poor man's profiling' method to profile a Migration run:

Migrate a custom JSON feed in Drupal 8 with Migrate Source JSON

June 2016 Update: Times change fast! Already, the migrate_source_json module mentioned in the post has been (mostly) merged directly into the migrate_plus module, so if you're building a new migration now, you should use the migrate_plus JSON plugin if at all possible. See Mike Ryan's blog post Drupal 8 plugins for XML and JSON migrations for more info.

Recently I needed to migrate a small set of content into a Drupal 8 site from a JSON feed, and since documentation for this particular scenario is slightly thin, I decided I'd post the entire process here.

I was given a JSON feed available over the public URL http://www.example.com/api/products.json which looked something like:

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