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Contents
require 'datadog/statsd'
require 'time'
module Percy
class Stats < ::Datadog::Statsd
DEFAULT_HOST = ENV.fetch(
'DATADOG_AGENT_HOST',
::Datadog::Statsd::Connection::DEFAULT_HOST,
)
DEFAULT_PORT = Integer(
ENV.fetch(
'DATADOG_AGENT_PORT',
::Datadog::Statsd::Connection::DEFAULT_PORT,
),
)
DEFAULT_TAGS = %W[
env:#{ENV.fetch('PERCY_ENV', 'development')}
].freeze
def initialize(
host = DEFAULT_HOST,
port = DEFAULT_PORT,
tags: DEFAULT_TAGS,
**kwargs
)
super(host, port, tags: tags, **kwargs)
end
# Equivalent to stats.time, but without wrapping in blocks and dealing with
# var scoping issues.
#
# @example Report the time taken to activate an account.
# stats.start_timing
# account.activate!
# stats.stop_timing('account.activate')
def start_timing
@_timing_start = now
true
end
def stop_timing(stat, options = {})
# Programmer mistake, so raise an error.
raise 'no timing started' unless @_timing_start
time_since_monotonic(stat, @_timing_start, options)
@_timing_start = nil
true
end
# dogstatsd uses a monotonic (linearly increasing) clock to calculate time
# intervals, so this should be used where necessary. However, it's not
# possible to compare monotonic time values with fixed times, so both are
# available.
def time_since_monotonic(stat, start, opts = {})
unless start.instance_of? Float
raise ArgumentError, 'start value must be Float'
end
timing(stat, ((now.to_f - start.to_f) * 1000).round, opts)
end
def time_since(stat, start, opts = {})
unless start.instance_of? Time
raise ArgumentError, 'start value must be Time'
end
timing(stat, ((Time.now.to_f - start.to_f) * 1000).round, opts)
end
private def now
Process.clock_gettime(Process::CLOCK_MONOTONIC)
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems