aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/lib/active_record/log_subscriber.rb
blob: d31e3214403d2c35ea50d6a81bd14d30cc368cfa (plain) (blame)
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
module ActiveRecord
  class LogSubscriber < ActiveSupport::LogSubscriber
    def self.runtime=(value)
      Thread.current["active_record_sql_runtime"] = value
    end

    def self.runtime
      Thread.current["active_record_sql_runtime"] ||= 0
    end

    def self.reset_runtime
      rt, self.runtime = runtime, 0
      rt
    end

    def initialize
      super
      @odd_or_even = false
    end

    def sql(event)
      self.class.runtime += event.duration
      return unless logger.debug?

      payload = event.payload

      return if 'SCHEMA' == payload[:name]

      name    = '%s (%.1fms)' % [payload[:name], event.duration]
      sql     = payload[:sql].squeeze(' ')
      binds   = nil

      unless (payload[:binds] || []).empty?
        binds = "  " + payload[:binds].map { |col,v|
          [col.name, v]
        }.inspect
      end

      if odd?
        name = color(name, CYAN, true)
        sql  = color(sql, nil, true)
      else
        name = color(name, MAGENTA, true)
      end

      debug "  #{name}  #{sql}#{binds}"
    end

    def odd?
      @odd_or_even = !@odd_or_even
    end

    def logger
      ActiveRecord::Base.logger
    end
  end
end

ActiveRecord::LogSubscriber.attach_to :active_record