Move migration from migrate to post_migrate

This is just in case the creation of this index takes
a while to create.

1 files changed, 23 insertions, 0 deletions

diff --git a/db/post_migrate/20190802235445_add_index_on_id_and_type_and_public_to_keys.rb b/db/post_migrate/20190802235445_add_index_on_id_and_type_and_public_to_keys.rb
new file mode 100644
index 00000000000..9b4d74b4bea
--- /dev/null
+++ b/db/post_migrate/20190802235445_add_index_on_id_and_type_and_public_to_keys.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class AddIndexOnIdAndTypeAndPublicToKeys < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  INDEX_NAME = "index_on_deploy_keys_id_and_type_and_public"
+
+  def up
+    add_concurrent_index(:keys,
+                         [:id, :type],
+                         where: "public = 't'",
+                         unique: true,
+                         name: INDEX_NAME)
+  end
+
+  def down
+    remove_concurrent_index_by_name(:keys, INDEX_NAME)
+  end
+end