Class: TDiary::Rack::ErrorHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/tdiary/rack/error_handler.rb

Overview

class ErrorHandler catches exceptions leaked from the downstream app, reports the class, message and backtrace to rack.errors, and replaces the response with a plain 500 that does not expose the details to the client.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ ErrorHandler

Returns a new instance of ErrorHandler.



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# File 'lib/tdiary/rack/error_handler.rb', line 11

def initialize( app )
	@app = app
end

Class Method Details

.report(errors, e) ⇒ Object 



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# File 'lib/tdiary/rack/error_handler.rb', line 22

def self.report( errors, e )
	errors.puts "#{e.class}: #{e.message}"
	( e.backtrace || [] ).each {|line| errors.puts "\t#{line}" }
	errors.flush
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/tdiary/rack/error_handler.rb', line 15

def call( env )
	@app.call( env )
rescue Exception => e
	self.class.report( env['rack.errors'], e )
	[500, { 'content-type' => 'text/plain' }, ["500 Internal Server Error\n"]]
end