From 8a25ea17c7bcfbcd913cdbaf0fe1bcfb9610b3a2 Mon Sep 17 00:00:00 2001
From: Jeff Balogh <jbalogh@mozilla.com>
Date: Wed, 13 Apr 2011 17:22:52 -0700
Subject: [PATCH] only store a certain percentage of discopane collections (bug
 645180)

---
 apps/discovery/views.py         | 6 ++++++
 migrations/179-more-waffles.sql | 5 +++++
 2 files changed, 11 insertions(+)
 create mode 100644 migrations/179-more-waffles.sql

diff --git a/apps/discovery/views.py b/apps/discovery/views.py
index 74c36d67e3d..95b8de8f7a8 100644
--- a/apps/discovery/views.py
+++ b/apps/discovery/views.py
@@ -13,6 +13,7 @@
 
 import commonware.log
 import jingo
+import waffle
 
 import amo
 import amo.utils
@@ -148,6 +149,11 @@ def recommendations(request, version, platform, limit=9):
     recs = _recommendations(request, version, platform, limit,
                             index, ids, recs)
 
+    # We're only storing a percentage of the collections we see because the db
+    # can't keep up with 100%.
+    if not waffle.sample_is_active('disco-pane-store-collections'):
+        return recs
+
     # Users have a token2 if they've been here before. The token matches
     # addon_index in their SyncedCollection.
     if 'token2' in POST:
diff --git a/migrations/179-more-waffles.sql b/migrations/179-more-waffles.sql
new file mode 100644
index 00000000000..613a25e8638
--- /dev/null
+++ b/migrations/179-more-waffles.sql
@@ -0,0 +1,5 @@
+CREATE TABLE `waffle_sample` (
+    `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,
+    `name` varchar(100) NOT NULL UNIQUE,
+    `percent` numeric(4, 1) NOT NULL
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_general_ci;