Added frontend cache purger

wagtail/contrib/wagtailfrontendcache/purger.py

@@ -0,0 +1,14 @@
+from urlparse import urlparse, urlunparse
+import requests
+
+from django.conf import settings
+
+
+def purge_page_from_cache(page):
+    # Build purge url
+    varnish_url = urlparse(getattr(settings, 'WAGTAILFRONTENDCACHE_LOCATION', 'http://127.0.0.1:8000/'))
+    page_url = urlparse(page.url)
+    purge_url = urlunparse((varnish_url.scheme, varnish_url.netloc, page_url.path, page_url.params, page_url.query, page_url.fragment))
+
+    # Purge
+    requests.request('PURGE', purge_url)

wagtail/contrib/wagtailfrontendcache/signal_handlers.py

@@ -0,0 +1,24 @@
+from django.db import models
+from django.db.models.signals import post_save, post_delete
+
+from wagtail.wagtailcore.models import Page
+
+from wagtail.contrib.wagtailfrontendcache import purger
+
+
+def post_save_signal_handler(instance, **kwargs):
+    purger.purge_page_from_cache(instance)
+
+
+def post_delete_signal_handler(instance, **kwargs):
+    purger.purge_page_from_cache(instance)
+
+
+def register_signal_handlers():
+    # Get list of models that are page types
+    indexed_models = [model for model in models.get_models() if issubclass(model, Page)]
+
+    # Loop through list and register signal handlers for each one
+    for model in indexed_models:
+        post_save.connect(post_save_signal_handler, sender=model)
+        post_delete.connect(post_delete_signal_handler, sender=model)