Merge branch 'master' into per-project-pipeline-iid

1 files changed, 32 insertions, 0 deletions

diff --git a/db/migrate/20180504195842_project_name_lower_index.rb b/db/migrate/20180504195842_project_name_lower_index.rb
new file mode 100644
index 00000000000..d6f25d3d4ab
--- /dev/null
+++ b/db/migrate/20180504195842_project_name_lower_index.rb
@@ -0,0 +1,32 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class ProjectNameLowerIndex < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+  INDEX_NAME = 'index_projects_on_lower_name'
+
+  disable_ddl_transaction!
+
+  def up
+    return unless Gitlab::Database.postgresql?
+
+    disable_statement_timeout
+
+    execute "CREATE INDEX CONCURRENTLY #{INDEX_NAME} ON projects (LOWER(name))"
+  end
+
+  def down
+    return unless Gitlab::Database.postgresql?
+
+    disable_statement_timeout
+
+    if supports_drop_index_concurrently?
+      execute "DROP INDEX CONCURRENTLY IF EXISTS #{INDEX_NAME}"
+    else
+      execute "DROP INDEX IF EXISTS #{INDEX_NAME}"
+    end
+  end
+end