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module ActiveRecord
class LogSubscriber < ActiveSupport::LogSubscriber
IGNORE_PAYLOAD_NAMES = ["SCHEMA", "EXPLAIN"]
def self.runtime=(value)
ActiveRecord::RuntimeRegistry.sql_runtime = value
end
def self.runtime
ActiveRecord::RuntimeRegistry.sql_runtime ||= 0
end
def self.reset_runtime
rt, self.runtime = runtime, 0
rt
end
def initialize
super
@odd = false
end
def render_bind(attribute)
value = if attribute.type.binary? && attribute.value
"<#{attribute.value.bytesize} bytes of binary data>"
else
attribute.value_for_database
end
[attribute.name, value]
end
def sql(event)
return unless logger.debug?
self.class.runtime += event.duration
payload = event.payload
return if IGNORE_PAYLOAD_NAMES.include?(payload[:name])
name = "#{payload[:name]} (#{event.duration.round(1)}ms)"
sql = payload[:sql]
binds = nil
unless (payload[:binds] || []).empty?
binds = " " + payload[:binds].map { |attr| render_bind(attr) }.inspect
end
name = colorize_payload_name(name, payload[:name])
sql = color(sql, sql_color(sql), true)
debug " #{name} #{sql}#{binds}"
end
private
def colorize_payload_name(name, payload_name)
if payload_name.blank? || payload_name == "SQL" # SQL vs Model Load/Exists
color(name, MAGENTA, true)
else
color(name, CYAN, true)
end
end
def sql_color(sql)
case sql
when /\A\s*rollback/mi
RED
when /\s*.*?select .*for update/mi, /\A\s*lock/mi
WHITE
when /\A\s*select/i
BLUE
when /\A\s*insert/i
GREEN
when /\A\s*update/i
YELLOW
when /\A\s*delete/i
RED
when /transaction\s*\Z/i
CYAN
else
MAGENTA
end
end
def logger
ActiveRecord::Base.logger
end
end
end
ActiveRecord::LogSubscriber.attach_to :active_record
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