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Debug Logging for Rails Autoloading
# Include this in the config/application.rb of your rails application
require 'colorize'
ActiveSupport::Dependencies.singleton_class.prepend(Module.new do
def load_missing_constant(*args)
arg_str = args.map(&:to_s).select { |arg| arg != 'Object' }.join('::').green
start = Time.now
result = nil
mv_with_indent do |indent|
indent_space = ' ' * indent * 4
puts "AUTOLOADING START: #{indent_space} +-> #{arg_str}"
begin
result = super
puts "AUTOLOADING DONE : #{indent_space} +-> #{arg_str} -- #{mv_duration_string(start)}"
rescue StandardError => e
puts "AUTOLOADING FAIL : #{indent_space} +-> #{arg_str} #{e} -- #{mv_duration_string(start)}"
raise
end
end
result
end
def mv_with_indent
Thread.current[:_auto_reload_indent] ||= 0
Thread.current[:_auto_reload_indent] += 1
yield Thread.current[:_auto_reload_indent]
ensure
Thread.current[:_auto_reload_indent] -= 1
end
def mv_duration_string(start, finish: Time.now)
duration = (finish - start) * 1000.0
duration_str = "#{duration.round(2)}ms"
if duration > 10
duration_str.red
elsif duration > 1
duration_str.yellow
else
duration_str
end
end
end)
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