Class: Trouble::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/trouble/middleware.rb

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



4
5
6
 
# File 'lib/trouble/middleware.rb', line 4

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# File 'lib/trouble/middleware.rb', line 8

def call(env)
  # calling env.dup here prevents bad things from happening
 request = Rack::Request.new(env.dup)
 # calling request.params is sufficient to trigger the "invalid %-encoding" error
 # see https://github.com/rack/rack/issues/337#issuecomment-46453404
 request.params
 @app.call(env)

rescue ArgumentError => exception
  raise unless exception.message.include?('invalid %-encoding')
  return [400, {}, ['']]

rescue => exception
  logger.fatal [$!.class, $!.message, $!.backtrace[2..5]].join("\n")
  ::Trouble.notify exception
  raise
end