1
2
3
4
5
6
7
8
9
10
11
12
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
|
# frozen_string_literal: true
require "active_support/core_ext/time/conversions"
require "active_support/core_ext/object/blank"
require "active_support/log_subscriber"
require "action_dispatch/http/request"
require "rack/body_proxy"
module Rails
module Rack
# Sets log tags, logs the request, calls the app, and flushes the logs.
#
# Log tags (+taggers+) can be an Array containing: methods that the +request+
# object responds to, objects that respond to +to_s+ or Proc objects that accept
# an instance of the +request+ object.
class Logger < ActiveSupport::LogSubscriber
def initialize(app, taggers = nil)
@app = app
@taggers = taggers || []
end
def call(env)
request = ActionDispatch::Request.new(env)
if logger.respond_to?(:tagged)
logger.tagged(compute_tags(request)) { call_app(request, env) }
else
call_app(request, env)
end
end
private
def call_app(request, env) # :doc:
instrumenter = ActiveSupport::Notifications.instrumenter
instrumenter.start "request.action_dispatch", request: request
logger.info { started_request_message(request) }
status, headers, body = @app.call(env)
body = ::Rack::BodyProxy.new(body) { finish(request) }
[status, headers, body]
rescue Exception
finish(request)
raise
ensure
ActiveSupport::LogSubscriber.flush_all!
end
# Started GET "/session/new" for 127.0.0.1 at 2012-09-26 14:51:42 -0700
def started_request_message(request) # :doc:
'Started %s "%s" for %s at %s' % [
request.request_method,
request.filtered_path,
request.ip,
Time.now.to_default_s ]
end
def compute_tags(request) # :doc:
@taggers.collect do |tag|
case tag
when Proc
tag.call(request)
when Symbol
request.send(tag)
else
tag
end
end
end
def finish(request)
instrumenter = ActiveSupport::Notifications.instrumenter
instrumenter.finish "request.action_dispatch", request: request
end
def logger
Rails.logger
end
end
end
end
|
