discourse/script/profile_db_generator.rb

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# frozen_string_literal: true
# can be used to generate a mock db for profiling purposes
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# we want our script to generate a consistent output, to do so
# we monkey patch array sample so it always uses the same rng
class Array
RNG = Random.new(1098109928029800)
def sample
self[RNG.rand(size)]
end
end
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# based on https://gist.github.com/zaius/2643079
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def unbundled_require(gem)
if defined?(::Bundler)
spec_path = Dir.glob("#{Gem.dir}/specifications/#{gem}-*.gemspec").last
if spec_path.nil?
raise LoadError
end
spec = Gem::Specification.load spec_path
spec.activate
end
begin
require gem
end
end
def sentence
@gabbler ||= Gabbler.new.tap do |gabbler|
story = File.read(File.dirname(__FILE__) + "/alice.txt")
gabbler.learn(story)
end
sentence = ""
until sentence.length > 800 do
sentence << @gabbler.sentence
sentence << "\n"
end
sentence
end
def create_admin(seq)
User.new.tap { |admin|
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admin.email = "admin@localhost#{seq}.fake"
admin.username = "admin#{seq}"
admin.password = "password12345abc"
admin.save!
admin.grant_admin!
admin.change_trust_level!(TrustLevel[4])
admin.activate
}
end
require File.expand_path(File.dirname(__FILE__) + "/../config/environment")
Jobs.run_immediately!
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unless Rails.env == "profile"
puts "This script should only be used in the profile environment"
exit
end
def ensure_perf_test_topic_has_right_title!
t = Topic.find(179)
t.title = "I am a topic used for perf tests"
t.save! if t.title_changed?
end
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# by default, Discourse has a "system" and `discobot` account
if User.count > 2
puts "Only run this script against an empty DB"
ensure_perf_test_topic_has_right_title!
exit
end
require 'optparse'
begin
unbundled_require 'gabbler'
rescue LoadError
puts "installing gabbler gem"
puts `gem install gabbler`
unbundled_require 'gabbler'
end
puts "Creating 100 users"
users = 100.times.map do |i|
putc "."
create_admin(i)
end
puts
puts "Creating 10 categories"
categories = 10.times.map do |i|
putc "."
Category.create(name: "category#{i}", text_color: "ffffff", color: "000000", user: users.first)
end
puts
puts "Creating 100 topics"
topic_ids = 100.times.map do
post = PostCreator.create(users.sample, raw: sentence, title: sentence[0..50].strip, category: categories.sample.name, skip_validations: true)
putc "."
post.topic_id
end
puts
puts "creating 2000 replies"
2000.times do
putc "."
PostCreator.create(users.sample, raw: sentence, topic_id: topic_ids.sample, skip_validations: true)
end
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# no sidekiq so update some stuff
Category.update_stats
Jobs::PeriodicalUpdates.new.execute(nil)
ensure_perf_test_topic_has_right_title!