README

This composer-installable example demonstrates how to purge Cloudflare cache when your live environment's cache is cleared.

TODO

• Quicksilver script projects and the script name itself should be consistent in naming convention. - To rename after demonstrated working with existing filenames (underscores)

Installation

While it's possible to use the script individually, this project is designed to be included from a site's composer.json file, and placed in its appropriate installation directory by Composer Installers.

In order for this to work, you should have the following in your composer.json file:

{
  "require": {
    "composer/installers": "^1"
  },
  "extra": {
    "installer-paths": {
      "web/private/scripts/quicksilver": ["type:quicksilver-script"]
    }
  }
}

The project can be included by using the command, where {quicksilver-project} represents the name of the Quicksilver script:

composer require pantheon-quicksilver/{quicksilver-project}:^1

If you are using one of the example PR workflow projects (Drupal 8, Drupal 9, WordPress) as a starting point for your site, these entries should already be present in your composer.json.

Setup

• Copy cloudflare-cache.json to files/private of the live environment after updating it with your cloudflare info.
• API key can be found in the My Settings page on the Cloudflare site.
• I couldn't find zone id in the UI. I viewed page source on the overview page and found it printed in JavaScript.
• Add the example cloudflare-cache.php script to the private/scripts directory of your code repository.
• Add a Quicksilver operation to your pantheon.yml to fire the script after a deploy.
• Deploy through to the live environment and clear the cache!

Optionally, you may want to use the terminus workflows watch command to get immediate debugging feedback.

Example pantheon.yml

Here's an example of what your pantheon.yml would look like if this were the only Quicksilver operation you wanted to use.

api_version: 1

workflows:
  clear_cache:
    after:
      - type: webphp
        description: Cloudflare Cache
        script: private/scripts/cloudflare-cache.php

Note that you will almost always want to clear your CDN cache with the after timing option. Otherwise you could end up with requests re-caching stale content. Caches should generally be cleared "bottom up".