Created
September 22, 2021 13:39
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| class Profiler | |
| SUBSCRIPTIONS = [ | |
| 'sql.active_record', | |
| 'render_template.action_view', | |
| 'render_partial.action_view', | |
| 'process_action.action_controller' | |
| ].freeze | |
| PATH = './log/profiler.log' | |
| IGNORE_SQL_NAMES = %w(SCHEMA CACHE).freeze | |
| IGNORE_SQL_QUERIES = %w(COMMIT BEGIN).freeze | |
| class << self | |
| attr_reader :instance | |
| def run | |
| @instance ||= Profiler.new.run | |
| end | |
| end | |
| def run | |
| SUBSCRIPTIONS.each do |subscription| | |
| ActiveSupport::Notifications.subscribe(subscription) do |_name, start, finish, _id, payload| | |
| if Thread.current[:request_id].present? | |
| message = build_message(start: start, finish: finish, payload: payload , subscription: subscription) | |
| logger.info message if message.present? | |
| end | |
| end | |
| end | |
| end | |
| private | |
| def build_message(start: ,finish: , payload:, subscription: ) | |
| duration = (finish.to_f - start.to_f) * 1000 | |
| message = case subscription | |
| when 'render_partial.action_view', 'render_template.action_view' | |
| render_partial_message(payload) | |
| when 'sql.active_record' | |
| sql_request_message(payload) | |
| end | |
| [Time.now.to_s, Thread.current[:request_id], subscription, duration.round(2), message].join(':') if message.present? | |
| end | |
| def render_partial_message(payload) | |
| path = payload[:identifier].split('/') | |
| app_index = path.index('app') | |
| path[app_index..path.length].join('/') | |
| end | |
| def sql_request_message(payload) | |
| return if IGNORE_SQL_NAMES.include? payload[:name] | |
| return if IGNORE_SQL_QUERIES.map { |query| payload[:sql].strip.start_with?(query) }.reduce(:&) | |
| payload[:sql].strip | |
| end | |
| def logger | |
| @logger ||= ActiveSupport::Logger.new Rails.root.join(PATH) | |
| end | |
| end | |
| Profiler.run if Settings.profiler_enable? |
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