mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
51 lines
1.9 KiB
Ruby
51 lines
1.9 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require_relative "core_ext/benchmark"
|
|
require_relative "core_ext/hash/keys"
|
|
|
|
module ActiveSupport
|
|
module Benchmarkable
|
|
# Allows you to measure the execution time of a block in a template and
|
|
# records the result to the log. Wrap this block around expensive operations
|
|
# or possible bottlenecks to get a time reading for the operation. For
|
|
# example, let's say you thought your file processing method was taking too
|
|
# long; you could wrap it in a benchmark block.
|
|
#
|
|
# <% benchmark 'Process data files' do %>
|
|
# <%= expensive_files_operation %>
|
|
# <% end %>
|
|
#
|
|
# That would add something like "Process data files (345.2ms)" to the log,
|
|
# which you can then use to compare timings when optimizing your code.
|
|
#
|
|
# You may give an optional logger level (<tt>:debug</tt>, <tt>:info</tt>,
|
|
# <tt>:warn</tt>, <tt>:error</tt>) as the <tt>:level</tt> option. The
|
|
# default logger level value is <tt>:info</tt>.
|
|
#
|
|
# <% benchmark 'Low-level files', level: :debug do %>
|
|
# <%= lowlevel_files_operation %>
|
|
# <% end %>
|
|
#
|
|
# Finally, you can pass true as the third argument to silence all log
|
|
# activity (other than the timing information) from inside the block. This
|
|
# is great for boiling down a noisy block to just a single statement that
|
|
# produces one log line:
|
|
#
|
|
# <% benchmark 'Process data files', level: :info, silence: true do %>
|
|
# <%= expensive_and_chatty_files_operation %>
|
|
# <% end %>
|
|
def benchmark(message = "Benchmarking", options = {})
|
|
if logger
|
|
options.assert_valid_keys(:level, :silence)
|
|
options[:level] ||= :info
|
|
|
|
result = nil
|
|
ms = Benchmark.ms { result = options[:silence] ? logger.silence { yield } : yield }
|
|
logger.send(options[:level], "%s (%.1fms)" % [ message, ms ])
|
|
result
|
|
else
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
end
|