Class: ActiveRecord::LogSubscriber

Inherits:
ActiveSupport::LogSubscriber
  • Object
show all
Defined in:
lib/active_record/log_subscriber.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LogSubscriber

Returns a new instance of LogSubscriber.



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# File 'lib/active_record/log_subscriber.rb', line 16

def initialize
  super
  @odd_or_even = false
end

Class Method Details

.reset_runtime ⇒ Object 



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# File 'lib/active_record/log_subscriber.rb', line 11

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

.runtime ⇒ Object 



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# File 'lib/active_record/log_subscriber.rb', line 7

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

.runtime=(value) ⇒ Object 



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# File 'lib/active_record/log_subscriber.rb', line 3

def self.runtime=(value)
  Thread.current["active_record_sql_runtime"] = value
end

Instance Method Details

#identity(event) ⇒ Object 



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# File 'lib/active_record/log_subscriber.rb', line 53

def identity(event)
  return unless logger.debug?

  name = color(event.payload[:name], odd? ? CYAN : MAGENTA, true)
  line = odd? ? color(event.payload[:line], nil, true) : event.payload[:line]

  debug "  #{name}  #{line}"
end

#logger ⇒ Object 



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# File 'lib/active_record/log_subscriber.rb', line 66

def logger
  ActiveRecord::Base.logger
end

#odd? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/log_subscriber.rb', line 62

def odd?
  @odd_or_even = !@odd_or_even
end

#sql(event) ⇒ Object 



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# File 'lib/active_record/log_subscriber.rb', line 21

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|
      if col
        [col.name, v]
      else
        [nil, v]
      end
    }.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