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module ActionController
class LogSubscriber < ActiveSupport::LogSubscriber
INTERNAL_PARAMS = %w(controller action format _method only_path)
def start_processing(event)
return unless logger.info?
payload = event.payload
params = payload[:params].except(*INTERNAL_PARAMS)
format = payload[:format]
format = format.to_s.upcase if format.is_a?(Symbol)
info "Processing by #{payload[:controller]}##{payload[:action]} as #{format}"
info " Parameters: #{params.inspect}" unless params.empty?
end
def process_action(event)
info do
payload = event.payload
additions = ActionController::Base.log_process_action(payload)
status = payload[:status]
if status.nil? && payload[:exception].present?
exception_class_name = payload[:exception].first
status = ActionDispatch::ExceptionWrapper.status_code_for_exception(exception_class_name)
end
message = "Completed #{status} #{Rack::Utils::HTTP_STATUS_CODES[status]} in #{event.duration.round}ms"
message << " (#{additions.join(" | ".freeze)})" unless additions.empty?
message << "\n\n" if defined?(Rails.env) && Rails.env.development?
message
end
end
def halted_callback(event)
info { "Filter chain halted as #{event.payload[:filter].inspect} rendered or redirected" }
end
def send_file(event)
info { "Sent file #{event.payload[:path]} (#{event.duration.round(1)}ms)" }
end
def redirect_to(event)
info { "Redirected to #{event.payload[:location]}" }
end
def send_data(event)
info { "Sent data #{event.payload[:filename]} (#{event.duration.round(1)}ms)" }
end
def unpermitted_parameters(event)
debug do
unpermitted_keys = event.payload[:keys]
"Unpermitted parameter#{'s' if unpermitted_keys.size > 1}: #{unpermitted_keys.map { |e| ":#{e}" }.join(", ")}"
end
end
%w(write_fragment read_fragment exist_fragment?
expire_fragment expire_page write_page).each do |method|
class_eval <<-METHOD, __FILE__, __LINE__ + 1
def #{method}(event)
return unless logger.info? && ActionController::Base.enable_fragment_cache_logging
key = ActiveSupport::Cache.expand_cache_key(event.payload[:key] || event.payload[:path])
human_name = #{method.to_s.humanize.inspect}
info("\#{human_name} \#{key} (\#{event.duration.round(1)}ms)")
end
METHOD
end
def logger
ActionController::Base.logger
end
end
end
ActionController::LogSubscriber.attach_to :action_controller
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