How would you call a function if and only if a coroutine is suspended for more than X ms ```log verbose awaiting for $ request uri hasTokenStates first hasToken gt hasToken suspending log verbose awaiting complete for $ request uri ``` I want to only log ` awaiting for $ request uri ` if the `first ` suspends for more than `1 000`ms

How would you call a function if and only if a coroutine is kotlinlang #coroutines

zak.taccardi

03/10/2021, 8:59 PM

How would you call a function if and only if a coroutine is suspended for more than X ms?

log.verbose("awaiting for ${request.uri}")
hasTokenStates
    .first { hasToken -> hasToken } // suspending
log.verbose("awaiting complete for ${request.uri}")

I want to only log

"awaiting for ${request.uri}"

first()

suspends for more than `1_000`ms

Zach Klippenstein (he/him) [MOD]

03/10/2021, 9:00 PM

try {
  withTimeout(duration) {
    job.join()
  }
} catch (e: TimeoutException) {
  // …
}

zak.taccardi

03/10/2021, 9:00 PM

I think this maybe:

coroutineScope { // create scope from suspending context
    val logJob = launch {
        delay(1_000L)
        // only log if we have to wait for over a second
        log.verbose("API call for ${request.uri} is queued")
    }
    hasTokenStates
        .first { hasToken -> hasToken } // suspending
    logJob.cancel()
}

assuming that the

delay(1_000L)

checks for cancellation upon exiting the delay