blob: f0257e303f702b3bb43347d7c45a1f177b000b77 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
class AddPathIndexToRedirectRoutes < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
# Set this constant to true if this migration requires downtime.
DOWNTIME = false
disable_ddl_transaction!
INDEX_NAME = 'index_redirect_routes_on_path_unique_text_pattern_ops'
# Indexing on LOWER(path) varchar_pattern_ops speeds up the LIKE query in
# RedirectRoute.matching_path_and_descendants
#
# This same index is also added in the `ReworkRedirectRoutesIndexes` so this
# is a no-op in most cases.
def up
disable_statement_timeout do
unless index_exists_by_name?(:redirect_routes, INDEX_NAME)
execute("CREATE UNIQUE INDEX CONCURRENTLY #{INDEX_NAME} ON redirect_routes (lower(path) varchar_pattern_ops);")
end
end
end
def down
# Do nothing in the DOWN. Since the index above is originally created in the
# `ReworkRedirectRoutesIndexes`. This migration wouldn't have actually
# created any new index.
end
end
|
