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94 lines
3 KiB
Ruby
94 lines
3 KiB
Ruby
require 'action_dispatch/http/request'
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require 'action_dispatch/middleware/exception_wrapper'
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require 'action_dispatch/routing/inspector'
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module ActionDispatch
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# This middleware is responsible for logging exceptions and
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# showing a debugging page in case the request is local.
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class DebugExceptions
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RESCUES_TEMPLATE_PATH = File.join(File.dirname(__FILE__), 'templates')
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def initialize(app, routes_app = nil)
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@app = app
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@routes_app = routes_app
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end
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def call(env)
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begin
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response = @app.call(env)
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if response[1]['X-Cascade'] == 'pass'
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body = response[2]
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body.close if body.respond_to?(:close)
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raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"
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end
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rescue Exception => exception
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raise exception if env['action_dispatch.show_exceptions'] == false
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end
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exception ? render_exception(env, exception) : response
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end
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private
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def render_exception(env, exception)
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wrapper = ExceptionWrapper.new(env, exception)
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log_error(env, wrapper)
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if env['action_dispatch.show_detailed_exceptions']
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template = ActionView::Base.new([RESCUES_TEMPLATE_PATH],
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:request => Request.new(env),
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:exception => wrapper.exception,
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:application_trace => wrapper.application_trace,
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:framework_trace => wrapper.framework_trace,
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:full_trace => wrapper.full_trace,
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:routes => formatted_routes(exception)
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)
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file = "rescues/#{wrapper.rescue_template}"
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body = template.render(:template => file, :layout => 'rescues/layout')
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render(wrapper.status_code, body)
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else
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raise exception
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end
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end
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def render(status, body)
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[status, {'Content-Type' => "text/html; charset=#{Response.default_charset}", 'Content-Length' => body.bytesize.to_s}, [body]]
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end
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def log_error(env, wrapper)
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logger = logger(env)
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return unless logger
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exception = wrapper.exception
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trace = wrapper.application_trace
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trace = wrapper.framework_trace if trace.empty?
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ActiveSupport::Deprecation.silence do
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message = "\n#{exception.class} (#{exception.message}):\n"
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message << exception.annoted_source_code.to_s if exception.respond_to?(:annoted_source_code)
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message << " " << trace.join("\n ")
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logger.fatal("#{message}\n\n")
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end
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end
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def logger(env)
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env['action_dispatch.logger'] || stderr_logger
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end
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def stderr_logger
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@stderr_logger ||= ActiveSupport::Logger.new($stderr)
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end
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def formatted_routes(exception)
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return false unless @routes_app.respond_to?(:routes)
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if exception.is_a?(ActionController::RoutingError) || exception.is_a?(ActionView::Template::Error)
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inspector = ActionDispatch::Routing::RoutesInspector.new
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inspector.format(@routes_app.routes.routes).join("\n")
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end
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end
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end
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end
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