discourse/config/initializers/06-mini_profiler.rb

82 lines
3.3 KiB
Ruby

# If Mini Profiler is included via gem
if Rails.configuration.respond_to?(:load_mini_profiler) && Rails.configuration.load_mini_profiler
require 'rack-mini-profiler'
require 'flamegraph'
# TODO support Ruby 2.2 once bundler fixes itself
require 'memory_profiler' if RUBY_VERSION >= "2.1.0" && RUBY_VERSION < "2.2.0"
# initialization is skipped so trigger it
Rack::MiniProfilerRails.initialize!(Rails.application)
end
if defined?(Rack::MiniProfiler)
# note, we may want to add some extra security here that disables mini profiler in a multi hosted env unless user global admin
# raw_connection means results are not namespaced
#
# namespacing gets complex, cause mini profiler is in the rack chain way before multisite
Rack::MiniProfiler.config.storage_instance = Rack::MiniProfiler::RedisStore.new(connection: DiscourseRedis.raw_connection)
# For our app, let's just show mini profiler always, polling is chatty so nuke that
Rack::MiniProfiler.config.pre_authorize_cb = lambda do |env|
path = env['PATH_INFO']
(env['HTTP_USER_AGENT'] !~ /iPad|iPhone|Nexus 7|Android/) &&
(path !~ /^\/message-bus/) &&
(path !~ /topics\/timings/) &&
(path !~ /assets/) &&
(path !~ /\/user_avatar\//) &&
(path !~ /\/letter_avatar\//) &&
(path !~ /qunit/) &&
(path !~ /srv\/status/) &&
(path !~ /commits-widget/) &&
(path !~ /^\/cdn_asset/) &&
(path !~ /^\/logs/)
end
# without a user provider our results will use the ip address for namespacing
# with a load balancer in front this becomes really bad as some results can
# be stored associated with ip1 as the user and retrieved using ip2 causing 404s
Rack::MiniProfiler.config.user_provider = lambda do |env|
request = Rack::Request.new(env)
id = request.cookies["_t"] || request.ip || "unknown"
id = id.to_s
# some security, lets not have these tokens floating about
Digest::MD5.hexdigest(id)
end
Rack::MiniProfiler.config.position = 'left'
Rack::MiniProfiler.config.backtrace_ignores ||= []
Rack::MiniProfiler.config.backtrace_ignores << /lib\/rack\/message_bus.rb/
Rack::MiniProfiler.config.backtrace_ignores << /config\/initializers\/silence_logger/
Rack::MiniProfiler.config.backtrace_ignores << /config\/initializers\/quiet_logger/
# Rack::MiniProfiler.counter_method(ActiveRecord::QueryMethods, 'build_arel')
# Rack::MiniProfiler.counter_method(Array, 'uniq')
# require "#{Rails.root}/vendor/backports/notification"
# inst = Class.new
# class << inst
# def start(name,id,payload)
# if Rack::MiniProfiler.current && name !~ /(process_action.action_controller)|(render_template.action_view)/
# @prf ||= {}
# @prf[id] ||= []
# @prf[id] << Rack::MiniProfiler.start_step("#{payload[:serializer] if name =~ /serialize.serializer/} #{name}")
# end
# end
# def finish(name,id,payload)
# if Rack::MiniProfiler.current && name !~ /(process_action.action_controller)|(render_template.action_view)/
# t = @prf[id].pop
# @prf.delete id unless t
# Rack::MiniProfiler.finish_step t
# end
# end
# end
# disabling for now cause this slows stuff down too much
# ActiveSupport::Notifications.subscribe(/.*/, inst)
# Rack::MiniProfiler.profile_method ActionView::PathResolver, 'find_templates'
end