ruby on rails - ActiveSupport notifications dont have a duration -

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we use activesupport notifications log specific network calls (with faraday). in 1 of types of calls, when code reaches 

  activesupport::notifications.subscribe(notification[:name]) |_name, starts, ends, _, env|     handle_notification(starts, ends, env, notification[:service], env[:request_headers][notification[:header]])   end

the starts , ends same, can't calculate duration of call. since happens 1 specific call, , code same, notice calls work extracted gems, calls aren't working no in gems. not sure if matters

how can debug/solve this?

the start , end values time objects. if log output of values appear time/date value 2017-01-12 10:51:00 +0100.

you have convert milliseconds or microseconds see fine values.

you can convert time object milliseconds following:

start.to_f * 1000 end.to_f * 1000

then can work values 1484216765256 in milliseconds , calculate duration subtracting end start.


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