[bug 623961] Switch to SQL-based migrations for notifications.

migrations/82-migrate-notifications.sql

@@ -0,0 +1,145 @@
+-- Migrate watches from the old notifications_eventwatch table to the 2 new ones.
+-- Took 2 minutes and 45 seconds for 120K rows on my laptop.
+
+-- First, frob the collation of the email column to hugely speed things up:
+ALTER TABLE notifications_watch MODIFY email varchar(75) NOT NULL COLLATE utf8_unicode_ci;
+BEGIN;  -- MySQL stupidly commits when it hits an ALTER statement.
+
+-- Next, do the filterless watches:
+
+INSERT INTO notifications_watch
+    (event_type, content_type_id, object_id, is_active, email)
+    SELECT 'question solved',
+           content_type_id,
+           watch_id,
+           1,
+           email
+        FROM notifications_eventwatch
+        WHERE event_type='solution';
+
+INSERT INTO notifications_watch
+    (event_type, content_type_id, object_id, is_active, email)
+    SELECT 'wiki edit document',
+           content_type_id,
+           watch_id,
+           1,
+           email
+        FROM notifications_eventwatch
+        WHERE event_type='edited';
+
+-- 'post' type referring to wiki docs:
+INSERT INTO notifications_watch
+    (event_type, content_type_id, object_id, is_active, email)
+    SELECT 'kbforum thread',
+           content_type_id,
+           watch_id,
+           1,
+           email
+        FROM notifications_eventwatch
+        WHERE event_type='post' AND content_type_id=(SELECT id from django_content_type where model='document' and app_label='wiki');
+
+-- 'post' type referring to forums:
+INSERT INTO notifications_watch
+    (event_type, content_type_id, object_id, is_active, email)
+    SELECT 'forum thread',
+           content_type_id,
+           watch_id,
+           1,
+           email
+        FROM notifications_eventwatch
+        WHERE event_type='post' AND content_type_id=(SELECT id from django_content_type where model='forum' and app_label='forums');
+
+-- 'reply' type referring to questions:
+INSERT INTO notifications_watch
+    (event_type, content_type_id, object_id, is_active, email)
+    SELECT 'question reply',
+           content_type_id,
+           watch_id,
+           1,
+           email
+        FROM notifications_eventwatch
+        WHERE event_type='reply' AND content_type_id=(SELECT id from django_content_type where model='question' and app_label='questions');
+
+-- 'reply' type referring to forum threads:
+INSERT INTO notifications_watch
+    (event_type, content_type_id, object_id, is_active, email)
+    SELECT 'thread reply',
+           content_type_id,
+           watch_id,
+           1,
+           email
+        FROM notifications_eventwatch
+        WHERE event_type='reply' AND content_type_id=(SELECT id from django_content_type where model='thread' and app_label='forums');
+
+-- 'reply' type referring to kbforums:
+INSERT INTO notifications_watch
+    (event_type, content_type_id, object_id, is_active, email)
+    SELECT 'kbthread reply',
+           content_type_id,
+           watch_id,
+           1,
+           email
+        FROM notifications_eventwatch
+        WHERE event_type='reply' AND content_type_id=(SELECT id from django_content_type where model='thread' and app_label='kbforums');
+
+
+-- Migrate watches that in the new system have filters:
+
+-- 'approved' type:
+-- We do a little dance where we stick the old watch ID into the object_id
+-- column temporarily and use it to find the old watch when inserting the new
+-- watchfilter row.
+INSERT INTO notifications_watch (event_type, is_active, email, object_id)
+    SELECT 'approved wiki in locale',
+           1,
+           email,
+           id
+        FROM notifications_eventwatch
+        WHERE event_type='approved';
+INSERT INTO notifications_watchfilter (watch_id, name, value)
+    SELECT notifications_watch.id,
+           'locale',
+           crc32(notifications_eventwatch.locale)
+        FROM notifications_watch
+        INNER JOIN notifications_eventwatch ON notifications_watch.object_id=notifications_eventwatch.id
+        WHERE notifications_eventwatch.event_type='approved';
+UPDATE notifications_watch SET object_id=NULL
+    WHERE event_type='approved wiki in locale';
+
+-- 'ready_for_review' type:
+INSERT INTO notifications_watch (event_type, is_active, email, object_id)
+    SELECT 'reviewable wiki in locale',
+           1,
+           email,
+           id
+        FROM notifications_eventwatch
+        WHERE event_type='ready_for_review';
+INSERT INTO notifications_watchfilter (watch_id, name, value)
+    SELECT notifications_watch.id,
+           'locale',
+           crc32(notifications_eventwatch.locale)
+        FROM notifications_watch
+        INNER JOIN notifications_eventwatch ON notifications_watch.object_id=notifications_eventwatch.id
+        WHERE notifications_eventwatch.event_type='ready_for_review';
+UPDATE notifications_watch SET object_id=NULL
+    WHERE event_type='reviewable wiki in locale';
+
+
+-- Replace the emails with user IDs where they match:
+UPDATE notifications_watch INNER JOIN auth_user ON notifications_watch.email=auth_user.email SET notifications_watch.user_id=auth_user.id, notifications_watch.email=NULL;
+-- And put the email column's collation back the way we found it:
+ALTER TABLE notifications_watch MODIFY email varchar(75) NOT NULL COLLATE utf8_general_ci;
+
+
+-- Insert random secrets:
+UPDATE notifications_watch SET secret=concat(
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)),
+    char(round(rand() * 25) + (case when round(rand()) then 65 else 97 end)));

push.txt

@@ -15,8 +15,3 @@ This Time
 =========
 
 1. Update Sphinx config.
-2. Migrate watches:
-2.1. Set CONFIRM_ANONYMOUS_WATCHES = False in settings_local.py
-2.2. manage.py migrate_watches  # may take a while
-2.3. Set CONFIRM_ANONYMOUS_WATCHES = True (or comment out = False)
-