Class: Mnemosyne::Middleware::Rack

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

Defined Under Namespace

Classes: Proxy

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Rack

Returns a new instance of Rack.



57
58
59
 
# File 'lib/mnemosyne/middleware/rack.rb', line 57

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
 
# File 'lib/mnemosyne/middleware/rack.rb', line 61

def call(env)
  origin      = env.fetch('HTTP_X_MNEMOSYNE_ORIGIN', false)
  transaction = env.fetch('HTTP_X_MNEMOSYNE_TRANSACTION') do
    ::SecureRandom.uuid
  end

  trace = ::Mnemosyne::Instrumenter.trace(
    'app.web.request.rack',
    transaction:,
    origin:
  )

  if trace
    trace.start!

    scan_request(trace, env)

    response = @app.call env

    scan_response(trace, response)

    response[2] = Proxy.new(response[2], trace)
    response
  else
    @app.call env
  end
rescue StandardError, LoadError, SyntaxError => e
  if trace
    trace.attach_error(e)
    trace.submit
  end

  raise
ensure
  trace&.release
end