Remove obsolete bot_type column

users.bot_type column is removed in favor
of users.user_type

app/models/user.rb

@@ -65,8 +65,7 @@ class User < ApplicationRecord
 
   MINIMUM_INACTIVE_DAYS = 180
 
-  ignore_column :bot_type, remove_with: '12.11', remove_after: '2020-04-22'
-
+  ignore_column :bot_type, remove_with: '13.1', remove_after: '2020-05-22'
   ignore_column :ghost, remove_with: '13.2', remove_after: '2020-06-22'
 
   # Override Devise::Models::Trackable#update_tracked_fields!

changelogs/unreleased/208897-remove-bot-type-column.yml

+---
+title: Remove obsolete bot_type column
+merge_request: 27076
+author:
+type: other

config/pseudonymizer.yml

@@ -469,7 +469,6 @@ tables:
     - last_activity_on
     - notified_of_own_activity
     - user_type
-    - bot_type
     - preferred_language
     - theme_id
 

db/post_migrate/20200508091106_remove_bot_type.rb

+# frozen_string_literal: true
+
+class RemoveBotType < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    remove_concurrent_index_by_name :users, 'index_users_on_bot_type'
+
+    with_lock_retries do
+      remove_column :users, :bot_type
+    end
+  end
+
+  def down
+    unless column_exists?(:users, :bot_type)
+      with_lock_retries do
+        add_column :users, :bot_type, :integer, limit: 2 # rubocop:disable Migration/AddColumnsToWideTables
+      end
+    end
+
+    execute 'UPDATE users set bot_type = user_type WHERE user_type IN(1,2,3,6)'
+
+    add_concurrent_index :users, :bot_type
+  end
+end

db/structure.sql

@@ -6778,7 +6778,6 @@ CREATE TABLE public.users (
     commit_email character varying,
     group_view integer,
     managing_group_id integer,
-    bot_type smallint,
     first_name character varying(255),
     last_name character varying(255),
     static_object_token character varying(255),
@@ -10732,8 +10731,6 @@ CREATE INDEX index_users_on_accepted_term_id ON public.users USING btree (accept
 
 CREATE INDEX index_users_on_admin ON public.users USING btree (admin);
 
-CREATE INDEX index_users_on_bot_type ON public.users USING btree (bot_type);
-
 CREATE UNIQUE INDEX index_users_on_confirmation_token ON public.users USING btree (confirmation_token);
 
 CREATE INDEX index_users_on_created_at ON public.users USING btree (created_at);
@@ -13765,6 +13762,7 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200506085748
 20200506125731
 20200507221434
+20200508091106
 20200511145545
 \.
 

lib/gitlab/background_migration/populate_user_highest_roles_table.rb

@@ -20,6 +20,8 @@ module Gitlab
       end
 
       def perform(from_id, to_id)
+        return unless User.column_names.include?('bot_type')
+
         (from_id..to_id).each_slice(BATCH_SIZE) do |ids|
           execute(
             <<-EOF