Class: Yardie::Middleware

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

Constant Summary collapse

DEV_DELIVERY_URI = 
URI('http://localhost:3000/runtime/mailbox')
PROD_DELIVERY_PATH = 
URI('https://rocky-sierra-12787.herokuapp.com/runtime/mailbox')

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



9
10
11
 
# File 'lib/yardie/middleware/middleware.rb', line 9

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
 
# File 'lib/yardie/middleware/middleware.rb', line 13

def call(env)
  return @app.call(env) if ENV['YARDIE_DISABLE'] && ENV['YARDIE_DISABLE'].casecmp('TRUE').zero?
  return @app.call(env) if Rails.env.development? && env['REQUEST_PATH'].eql?('/runtime/mailbox')   # ignore calls to yourself to prevent infinite loops
  return @app.call(env) unless env['CONTENT_TYPE'].eql?('application/json')
  return @app.call(env) if ENV['YARDIE_AUTH_KEY'].blank?

  local_mode = ENV['YARDIE_LOCAL'] && ENV['YARDIE_LOCAL'].casecmp('TRUE').zero?
  ct = Thread.current.object_id

  error = false
  payload = {
    auth_key: ENV['YARDIE_AUTH_KEY'],
    request: {
      id: env['action_dispatch.request_id'],
      path: env['REQUEST_PATH'],
      query: env['QUERY_STRING'],
      method: env['REQUEST_METHOD'],
      body: nil,
      trace: []
    },
    controller: {
      name: nil,
      method: nil
    },
    response: {
      status: nil,
      body: nil
    }
  }

  req = Rack::Request.new(env)
  if req.post?
    begin
      request_body = req.body.read
      payload[:request][:body] = JSON.parse(request_body.delete("\n"))
    rescue StandardError
      error = true
    ensure
      req.body.rewind
    end
  end

  trace = TracePoint.new(:call) do |tp|
    klass = tp.defined_class.to_s

    if tp.path.to_s.start_with?(Rails.root.to_s) && Thread.current.object_id == ct
      # tracepoint emits events for ALL threads, so check that the thread that caused the event to be
      # emitted is the one we are interested in

      p "#{tp.defined_class} - #{tp.method_id} - #{tp.path}" if local_mode

      if klass.end_with?('Controller') && !klass.start_with?('Devise')
        payload[:controller][:name] = tp.defined_class.to_s
        payload[:controller][:method] = tp.method_id.to_s
      end

      payload[:request][:trace] << {
        class: tp.defined_class.to_s,
        method: tp.method_id.to_s
      }
    end
  end

  begin
    trace.enable
    status, headers, response = @app.call(env)
  rescue StandardError
    status = 500
  ensure
    trace.disable
  end

  payload[:response][:status] = status

  begin
    unless response.body.blank?
      payload[:response][:body] = JSON.parse(response.body)
    end
  rescue
    error = true
  end

  unless error
    if payload[:controller][:name].present? && payload[:controller][:method].present?
      # post the payload to Construction Yard servers
      Thread.new {
        uri = local_mode ? DEV_DELIVERY_URI : PROD_DELIVERY_PATH
        http = Net::HTTP.new(uri.host, uri.port)
        http.use_ssl = true if uri.scheme == 'https'
        req = Net::HTTP::Post.new(uri.path, 'Content-Type' => 'application/json')
        req.body = { payload: payload }.to_json
        http.request(req)
      }
    end
  end

  [status, headers, response]
end