manager command 'setup_db_indices': Adds missing database indices.

This does NOT drop and recreate existing indices, nor does it reconfigure
existing indices. If you want that, drop them manually first.

pillar/manage.py

@@ -142,6 +142,41 @@ def setup_db(admin_email):
                                            'is_private': False})
 
 
+@manager.command
+def setup_db_indices():
+    """Adds missing database indices."""
+
+    import pymongo
+
+    log.info('Adding missing database indices.')
+    log.warning('This does NOT drop and recreate existing indices, '
+                'nor does it reconfigure existing indices. '
+                'If you want that, drop them manually first.')
+    db = app.data.driver.db
+    coll = db['tokens']
+    coll.create_index([('user', pymongo.ASCENDING)])
+    coll.create_index([('token', pymongo.ASCENDING)])
+
+    coll = db['notifications']
+    coll.create_index([('user', pymongo.ASCENDING)])
+
+    coll = db['activities-subscriptions']
+    coll.create_index([('context_object', pymongo.ASCENDING)])
+
+    coll = db['nodes']
+    # This index is used for queries on project, and for queries on
+    # the combination (project, node type).
+    coll.create_index([('project', pymongo.ASCENDING),
+                       ('node_type', pymongo.ASCENDING)])
+    coll.create_index([('parent', pymongo.ASCENDING)])
+
+    coll_names = db.collection_names(include_system_collections=False)
+    for coll_name in sorted(coll_names):
+        stats = db.command('collStats', coll_name)
+        log.info('Collection %25s takes up %.3f MiB index space',
+                 coll_name, stats['totalIndexSize'] / 2**20)
+
+
 def _default_permissions():
     """Returns a dict of default permissions.