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Optimized n+1 queries in accounts Atom and HTML views

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Added stack trace for SQL queries in development
Removed badly thought out accounts/lookup API
This commit is contained in:
Eugen Rochko 2016-09-08 20:36:01 +02:00
parent a4cc966476
commit 85d89b472d
13 changed files with 44 additions and 68 deletions
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1
Gemfile
View file

@ -60,6 +60,7 @@ group :development do
gem 'binding_of_caller'
gem 'letter_opener'
gem 'bullet'
gem 'active_record_query_trace'
end
group :production do

2
Gemfile.lock
View file

@ -36,6 +36,7 @@ GEM
erubis (~> 2.7.0)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.2)
active_record_query_trace (1.5.3)
activejob (5.0.0.1)
activesupport (= 5.0.0.1)
globalid (>= 0.3.6)
@ -360,6 +361,7 @@ PLATFORMS
ruby
DEPENDENCIES
active_record_query_trace
addressable
better_errors
binding_of_caller

17
app/controllers/accounts_controller.rb
View file

@ -6,14 +6,21 @@ class AccountsController < ApplicationController
def show
respond_to do |format|
format.html { @statuses = @account.statuses.order('id desc').with_includes.with_counters.paginate(page: params[:page], per_page: 10)}
format.html do
@statuses = @account.statuses.order('id desc').with_includes.with_counters.paginate(page: params[:page], per_page: 10)
if user_signed_in?
status_ids = @statuses.collect { |s| [s.id, s.reblog_of_id] }.flatten.uniq
@favourited = Favourite.where(status_id: status_ids).where(account_id: current_user.account_id).map { |f| [f.status_id, true] }.to_h
@reblogged = Status.where(reblog_of_id: status_ids).where(account_id: current_user.account_id).map { |s| [s.reblog_of_id, true] }.to_h
else
@favourited = {}
@reblogged = {}
end
end
format.atom do
@entries = @account.stream_entries.order('id desc').with_includes.paginate_by_max_id(20, params[:max_id] || nil)
ActiveRecord::Associations::Preloader.new.preload(@entries.select { |a| a.activity_type == 'Status' }, activity: [:mentions, :media_attachments, reblog: :account, thread: :account])
ActiveRecord::Associations::Preloader.new.preload(@entries.select { |a| a.activity_type == 'Favourite' }, activity: [:account, :status])
ActiveRecord::Associations::Preloader.new.preload(@entries.select { |a| a.activity_type == 'Follow' }, activity: :target_account)
end
end
end

14
app/controllers/api/accounts/lookup_controller.rb
View file

@ -1,14 +0,0 @@
class Api::Accounts::LookupController < ApiController
before_action :doorkeeper_authorize!
respond_to :json
def index
@accounts = Account.where(domain: nil).where(username: lookup_params)
end
private
def lookup_params
(params[:usernames] || '').split(',').map(&:strip)
end
end

2
app/helpers/api/accounts/lookup_helper.rb
View file

@ -1,2 +0,0 @@
module Api::Accounts::LookupHelper
end

19
app/helpers/application_helper.rb
View file

@ -22,23 +22,26 @@ module ApplicationHelper
def account_from_mentions(search_string, mentions)
mentions.each { |x| return x.account if x.account.acct.eql?(search_string) }
nil
# If that was unsuccessful, try fetching user from db separately
# But this shouldn't ever happen if the mentions were created correctly!
username, domain = search_string.split('@')
# username, domain = search_string.split('@')
if domain == Rails.configuration.x.local_domain
account = Account.find_local(username)
else
account = Account.find_remote(username, domain)
end
# if domain == Rails.configuration.x.local_domain
# account = Account.find_local(username)
# else
# account = Account.find_remote(username, domain)
# end
account
# account
end
def linkify(status)
auto_link(HTMLEntities.new.encode(status.text), link: :urls, html: { rel: 'nofollow noopener' }).gsub(Account::MENTION_RE) do |m|
if account = account_from_mentions(Account::MENTION_RE.match(m)[1], status.mentions)
account = account_from_mentions(Account::MENTION_RE.match(m)[1], status.mentions)
unless account.nil?
"#{m.split('@').first}<a href=\"#{url_for_target(account)}\" class=\"mention\">@<span>#{account.acct}</span></a>"
else
m

4
app/helpers/stream_entries_helper.rb
View file

@ -21,11 +21,11 @@ module StreamEntriesHelper
end
def reblogged_by_me_class(status)
user_signed_in? && current_user.account.reblogged?(status) ? 'reblogged' : ''
user_signed_in? && @reblogged.has_key?(status.id) ? 'reblogged' : ''
end
def favourited_by_me_class(status)
user_signed_in? && current_user.account.favourited?(status) ? 'favourited' : ''
user_signed_in? && @favourited.has_key?(status.id) ? 'favourited' : ''
end
def proper_status(status)

2
app/models/status.rb
View file

@ -18,7 +18,7 @@ class Status < ApplicationRecord
validates :text, presence: true, if: Proc.new { |s| s.local? && !s.reblog? }
scope :with_counters, -> { select('statuses.*, (select count(r.id) from statuses as r where r.reblog_of_id = statuses.id) as reblogs_count, (select count(f.id) from favourites as f where f.status_id = statuses.id) as favourites_count') }
scope :with_includes, -> { includes(:account, :mentions, :media_attachments, :stream_entry, reblog: [:account, :mentions], thread: :account) }
scope :with_includes, -> { includes(:account, :media_attachments, :stream_entry, mentions: :account, reblog: [:account, mentions: :account], thread: :account) }
def local?
self.uri.nil?

12
app/models/stream_entry.rb
View file

@ -4,9 +4,15 @@ class StreamEntry < ApplicationRecord
belongs_to :account, inverse_of: :stream_entries
belongs_to :activity, polymorphic: true
belongs_to :status, foreign_type: 'Status', foreign_key: 'activity_id'
belongs_to :follow, foreign_type: 'Follow', foreign_key: 'activity_id'
belongs_to :favourite, foreign_type: 'Favourite', foreign_key: 'activity_id'
validates :account, :activity, presence: true
scope :with_includes, -> { includes(:activity) }
STATUS_INCLUDES = [:account, :stream_entry, :media_attachments, mentions: :account, reblog: [:stream_entry, :account, mentions: :account], thread: [:stream_entry, :account]]
scope :with_includes, -> { includes(:account, status: STATUS_INCLUDES, favourite: [:account, :stream_entry, status: STATUS_INCLUDES], follow: [:target_account, :stream_entry]) }
def object_type
orphaned? ? :activity : (targeted? ? :activity : self.activity.object_type)
@ -44,6 +50,10 @@ class StreamEntry < ApplicationRecord
self.activity.respond_to?(:mentions) ? self.activity.mentions.map { |x| x.account } : []
end
def activity
self.send(self.activity_type.downcase.to_sym)
end
private
def orphaned?

6
config/environments/development.rb
View file

@ -59,9 +59,9 @@ Rails.application.configure do
config.action_mailer.delivery_method = :letter_opener
config.after_initialize do
Bullet.enable = true
Bullet.enable = true
Bullet.bullet_logger = true
Bullet.rails_logger = true
Bullet.rails_logger = false
Bullet.add_whitelist type: :n_plus_one_query, class_name: 'User', association: :account
end
@ -71,3 +71,5 @@ end
require 'sidekiq/testing'
Sidekiq::Testing.inline!
ActiveRecordQueryTrace.enabled = true

4
config/routes.rb
View file

@ -56,10 +56,6 @@ Rails.application.routes.draw do
resources :media, only: [:create]
resources :accounts, only: [:show] do
collection do
get :lookup, to: 'accounts/lookup#index', as: :lookup
end
member do
get :statuses
get :followers

24
spec/controllers/api/accounts/lookup_controller_spec.rb
View file

@ -1,24 +0,0 @@
require 'rails_helper'
RSpec.describe Api::Accounts::LookupController, type: :controller do
render_views
let(:user) { Fabricate(:user, account: Fabricate(:account, username: 'alice')) }
let(:token) { double acceptable?: true, resource_owner_id: user.id }
before do
allow(controller).to receive(:doorkeeper_token) { token }
end
describe 'GET #index' do
before do
Fabricate(:account, username: 'bob')
Fabricate(:account, username: 'mcbeth')
get :index, params: { usernames: 'alice,bob,mcbeth' }
end
it 'returns http success' do
expect(response).to have_http_status(:success)
end
end
end

5
spec/helpers/api/accounts/lookup_helper_spec.rb
View file

@ -1,5 +0,0 @@
require 'rails_helper'
RSpec.describe Api::Accounts::LookupHelper, type: :helper do
end