Commit bb0fe96f authored by Douwe Maan's avatar Douwe Maan

Merge branch 'users-autocomplete' into 'master'

Improve performance of searching for and auto completing of users

See merge request gitlab-org/gitlab-ce!17158
parents 58a312f5 090eeb58
......@@ -14,7 +14,6 @@ export default class DropdownUser extends FilteredSearchDropdown {
endpoint: `${gon.relative_url_root || ''}/autocomplete/users.json`,
searchKey: 'search',
params: {
per_page: 20,
active: true,
group_id: this.getGroupId(),
project_id: this.getProjectId(),
......
......@@ -39,7 +39,6 @@ function UsersSelect(currentUser, els, options = {}) {
options.showCurrentUser = $dropdown.data('currentUser');
options.todoFilter = $dropdown.data('todoFilter');
options.todoStateFilter = $dropdown.data('todoStateFilter');
options.perPage = $dropdown.data('perPage');
showNullUser = $dropdown.data('nullUser');
defaultNullUser = $dropdown.data('nullUserDefault');
showMenuAbove = $dropdown.data('showMenuAbove');
......@@ -669,7 +668,6 @@ UsersSelect.prototype.users = function(query, options, callback) {
const url = this.buildUrl(this.usersPath);
const params = {
search: query,
per_page: options.perPage || 20,
active: true,
project_id: options.projectId || null,
group_id: options.groupId || null,
......
class AutocompleteUsersFinder
# The number of users to display in the results is hardcoded to 20, and
# pagination is not supported. This ensures that performance remains
# consistent and removes the need for implementing keyset pagination to ensure
# good performance.
LIMIT = 20
attr_reader :current_user, :project, :group, :search, :skip_users,
:page, :per_page, :author_id, :params
:author_id, :params
def initialize(params:, current_user:, project:, group:)
@current_user = current_user
......@@ -8,8 +14,6 @@ class AutocompleteUsersFinder
@group = group
@search = params[:search]
@skip_users = params[:skip_users]
@page = params[:page]
@per_page = params[:per_page]
@author_id = params[:author_id]
@params = params
end
......@@ -20,7 +24,7 @@ class AutocompleteUsersFinder
items = items.reorder(:name)
items = items.search(search) if search.present?
items = items.where.not(id: skip_users) if skip_users.present?
items = items.page(page).per(per_page)
items = items.limit(LIMIT)
if params[:todo_filter].present? && current_user
items = items.todo_authors(current_user.id, params[:todo_state_filter])
......@@ -52,9 +56,13 @@ class AutocompleteUsersFinder
end
def users_from_project
user_ids = project.team.users.pluck(:id)
user_ids << author_id if author_id.present?
if author_id.present?
union = Gitlab::SQL::Union
.new([project.authorized_users, User.where(id: author_id)])
User.where(id: user_ids)
User.from("(#{union.to_sql}) #{User.table_name}")
else
project.authorized_users
end
end
end
......@@ -327,8 +327,8 @@ class User < ActiveRecord::Base
SQL
where(
fuzzy_arel_match(:name, query)
.or(fuzzy_arel_match(:username, query))
fuzzy_arel_match(:name, query, lower_exact_match: true)
.or(fuzzy_arel_match(:username, query, lower_exact_match: true))
.or(arel_table[:email].eq(query))
).reorder(order % { query: ActiveRecord::Base.connection.quote(query) }, :name)
end
......
---
title: Improve performance of searching for and autocompleting of users
merge_request:
author:
type: performance
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
class UsersNameLowerIndex < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
# Set this constant to true if this migration requires downtime.
DOWNTIME = false
INDEX_NAME = 'index_on_users_name_lower'
disable_ddl_transaction!
def up
return unless Gitlab::Database.postgresql?
# On GitLab.com this produces an index with a size of roughly 60 MB.
execute "CREATE INDEX CONCURRENTLY #{INDEX_NAME} ON users (LOWER(name))"
end
def down
return unless Gitlab::Database.postgresql?
if supports_drop_index_concurrently?
execute "DROP INDEX CONCURRENTLY IF EXISTS #{INDEX_NAME}"
else
execute "DROP INDEX IF EXISTS #{INDEX_NAME}"
end
end
end
......@@ -11,7 +11,7 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 20180213131630) do
ActiveRecord::Schema.define(version: 20180215181245) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
......
......@@ -25,7 +25,11 @@ module Gitlab
query.length >= MIN_CHARS_FOR_PARTIAL_MATCHING
end
def fuzzy_arel_match(column, query)
# column - The column name to search in.
# query - The text to search for.
# lower_exact_match - When set to `true` we'll fall back to using
# `LOWER(column) = query` instead of using `ILIKE`.
def fuzzy_arel_match(column, query, lower_exact_match: false)
query = query.squish
return nil unless query.present?
......@@ -36,9 +40,15 @@ module Gitlab
else
# No words of at least 3 chars, but we can search for an exact
# case insensitive match with the query as a whole
if lower_exact_match
Arel::Nodes::NamedFunction
.new('LOWER', [arel_table[column]])
.eq(query)
else
arel_table[column].matches(sanitize_sql_like(query))
end
end
end
def select_fuzzy_words(query)
quoted_words = query.scan(REGEX_QUOTED_WORD)
......
......@@ -8,6 +8,7 @@ task setup_postgresql: :environment do
require Rails.root.join('db/migrate/20170503185032_index_redirect_routes_path_for_like')
require Rails.root.join('db/migrate/20171220191323_add_index_on_namespaces_lower_name.rb')
require Rails.root.join('db/migrate/20180113220114_rework_redirect_routes_indexes.rb')
require Rails.root.join('db/migrate/20180215181245_users_name_lower_index.rb')
NamespacesProjectsPathLowerIndexes.new.up
AddUsersLowerUsernameEmailIndexes.new.up
......@@ -17,4 +18,5 @@ task setup_postgresql: :environment do
IndexRedirectRoutesPathForLike.new.up
AddIndexOnNamespacesLowerName.new.up
ReworkRedirectRoutesIndexes.new.up
UsersNameLowerIndex.new.up
end
......@@ -109,15 +109,17 @@ describe AutocompleteController do
end
context 'limited users per page' do
let(:per_page) { 2 }
before do
25.times do
create(:user)
end
sign_in(user)
get(:users, per_page: per_page)
get(:users)
end
it { expect(json_response).to be_kind_of(Array) }
it { expect(json_response.size).to eq(per_page) }
it { expect(json_response.size).to eq(20) }
end
context 'unauthenticated user' do
......
......@@ -154,6 +154,12 @@ describe Gitlab::SQL::Pattern do
it 'returns a single equality condition' do
expect(fuzzy_arel_match.to_sql).to match(/title.*I?LIKE 'fo'/)
end
it 'uses LOWER instead of ILIKE when LOWER is enabled' do
rel = Issue.fuzzy_arel_match(:title, query, lower_exact_match: true)
expect(rel.to_sql).to match(/LOWER\(.*title.*\).*=.*'fo'/)
end
end
context 'with two words both equal to 3 chars' do
......
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