Class: InstStatsd::BlockTracking

Inherits:
Object
  • Object
show all
Defined in:
lib/inst_statsd/block_tracking.rb

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/inst_statsd/block_tracking.rb', line 8

def logger
  @logger
end

Class Method Details

.track(key, category: nil, statsd: InstStatsd::Statsd, only: nil, tags: {}, short_stat: nil) ⇒ Object 



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# File 'lib/inst_statsd/block_tracking.rb', line 22

def track(key, category: nil, statsd: InstStatsd::Statsd, only: nil, tags: {}, short_stat: nil)
  return yield if mask && mask !~ key
  return yield if negative_mask && negative_mask =~ key

  cookies = if only
              Array(only).map { |name| [name, Counter.counters[name].start] }
            else
              Counter.counters.map { |(name, counter)| [name, counter.start] }
            end
  block_stat = InstStatsd::BlockStat.new(key, statsd, tags: tags, short_stat: short_stat)
  stack(category).push(block_stat) if category

  result = nil
  elapsed = Benchmark.realtime do
    result = yield
  end
  # to be consistent with ActionPack, measure in milliseconds
  elapsed *= 1000

  block_stat.stats = cookies.to_h { |(name, cookie)| [name, Counter.counters[name].finalize_count(cookie)] }
  block_stat.stats["total"] = elapsed
  # we need to make sure to report exclusive timings, even if nobody called us re-entrantly
  block_stat.subtract_exclusives({}) if category
  block_stat.report
  logger&.log(block_stat, "STATSD #{key}")
  # -1 is ourselves; we want to subtract from the block above us
  stack(category)[-2].subtract_exclusives(block_stat.stats) if category && stack(category)[-2]

  result
ensure
  stack(category).pop if category && stack(category).last == block_stat
end