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module Semantic
# use the Zeitwerk autoloader to reattach_appender for development autoreloading feature
class DevLoader
def initialize(session_key)
@session_key = session_key
force_preload_module
once_and_reload do
append_ansi_formatter
register_log_subscriber
end
# FIXME: proper unsubscribe!!!
RailsSemanticLogger::ActionController::LogSubscriber.logger.level = :fatal
#
# RailsSemanticLogger.swap_subscriber(
# RailsSemanticLogger::ActionController::LogSubscriber,
# @log_subscriber, # attach missing!!!
# :action_controller
# )
# ActiveSupport::LogSubscriber.subscribers.each do |sub|
# puts "subscriber #{sub.pattern}"
# end
# RailsSemanticLogger.swap_subscriber(RailsSemanticLogger::ActionController::LogSubscriber,
# @log_subscriber, :action_controller)
end
private
def once_and_reload(&)
yield
Rails.autoloaders.main.on_load('ApplicationController', &)
end
def force_preload_module
self.class.module_parent.constants.each { |const| self.class.module_parent.const_get(const) }
end
def append_ansi_formatter
SemanticLogger.clear_appenders!
formatter = Semantic::AnsiFormatter.new
SemanticLogger.add_appender(io: $stdout,
formatter:,
filter: ->(log) { !formatter.reject(log) })
end
def register_log_subscriber
reset_subscribers
register_to_action_controller(:start_processing)
register_to_action_controller(:process_action, :finish_processing)
register_to_action_controller(:redirect_to)
%i[send_file send_data halted_callback unpermitted_parameters send_stream write_fragment
read_fragment expire_fragment exist_fragment?].each do |hook|
register_to_action_controller(hook, :any_hook)
end
end
def register_to_action_controller(hook, method = hook)
@subscribers << ActiveSupport::Notifications.subscribe("#{hook}.action_controller") do |event|
@log_subscriber.send(method, event)
end
end
def reset_subscribers
if defined?(@subscribers)
@subscribers.each { |sub| ActiveSupport::Notifications.unsubscribe(sub) }
@subscribers.clear
else
@subscribers = []
end
@log_subscriber = Semantic::LogSubscriber.new(@session_key)
end
end
end