cancel-parent-cancel-children

Code

package com.glassthought.sandbox

import gt.sandbox.util.output.Out
import kotlinx.coroutines.CancellationException
import kotlinx.coroutines.async
import kotlinx.coroutines.cancel
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking
import kotlin.system.exitProcess
import kotlin.time.Duration.Companion.milliseconds
import kotlin.time.Duration.Companion.seconds

private val out = Out.standard()
private suspend fun mainImpl(out: Out) {
  coroutineScope {
    foo("msg-1")
  }
}

private suspend fun foo(msg: String) {
  out.actionWithMsg("fooImpl", { fooImpl(msg) })
}

private suspend fun fooImpl(msg: String) {
  coroutineScope {
    val deferred3 = async {
      out.delayNamed(3.seconds, "delayed([${msg}])")

      "res-3"
    }
    val deferred2 = async {
      out.delayNamed(2.seconds, "delayed([${msg}])")

      "res-2"
    }
    val deferred1 = async {
      out.delayNamed(1.seconds, "delayed([${msg}])")

      "res-1"
    }


    out.info("Just launched co-routines")
    out.delayNamed(500.milliseconds, "delay before scope cancel")
    this.cancel()

    out.info("deferred-1.result=" + deferred1.await())
    out.info("deferred-2.result=" + deferred2.await())
    out.info("deferred-3.result=" + deferred3.await())
  }

}

fun main(): Unit = runBlocking {
  out.info("START - ON MAIN")

  try {
    mainImpl(out)
  } catch (e: Exception) {
    out.error("back at MAIN got an exception! of type=[${e::class.simpleName}] with msg=[${e.message}] cause=[${e.cause}]. Exiting with error code 1")

    exitProcess(1)
  }

  out.info("DONE - WITHOUT errors on MAIN")
}

Command to reproduce:

gt.sandbox.checkout.commit a2df237045869c0a8e1b \
&& cd "${GT_SANDBOX_REPO}" \
&& cmd.run.announce "./gradlew run --quiet"

Recorded output of command:

Picked up JAVA_TOOL_OPTIONS: -Dkotlinx.coroutines.debug
Picked up JAVA_TOOL_OPTIONS: -Dkotlinx.coroutines.debug
[INFO][elapsed:   39ms][🥇][①][coroutname:@coroutine#1][tname:main/tid:1] START - ON MAIN
[INFO][elapsed:   56ms][🥇][①][coroutname:@coroutine#1][tname:main/tid:1] [>] Starting action=[fooImpl] 
[INFO][elapsed:   58ms][🥇][①][coroutname:@coroutine#1][tname:main/tid:1]    Just launched co-routines
[INFO][elapsed:   60ms][🥇][①][coroutname:@coroutine#1][tname:main/tid:1]    Delaying for 500ms what_for=[delay before scope cancel]
[INFO][elapsed:   63ms][🥇][⓶][coroutname:@coroutine#2][tname:main/tid:1] Delaying for 3s what_for=[delayed([msg-1])]
[INFO][elapsed:   63ms][🥇][⓷][coroutname:@coroutine#3][tname:main/tid:1] Delaying for 2s what_for=[delayed([msg-1])]
[INFO][elapsed:   63ms][🥇][⓸][coroutname:@coroutine#4][tname:main/tid:1] Delaying for 1s what_for=[delayed([msg-1])]
[INFO][elapsed:  562ms][🥇][①][coroutname:@coroutine#1][tname:main/tid:1]    Done delaying for 500ms what_for=[delay before scope cancel]
[WARN][elapsed:  615ms][🥇][⓶][coroutname:@coroutine#2][tname:main/tid:1] 🫡 I have caught [JobCancellationException/ScopeCoroutine was cancelled], and rethrowing it 🫡
[WARN][elapsed:  615ms][🥇][⓷][coroutname:@coroutine#3][tname:main/tid:1] 🫡 I have caught [JobCancellationException/ScopeCoroutine was cancelled], and rethrowing it 🫡
[WARN][elapsed:  616ms][🥇][⓸][coroutname:@coroutine#4][tname:main/tid:1] 🫡 I have caught [JobCancellationException/ScopeCoroutine was cancelled], and rethrowing it 🫡
[INFO][elapsed:  616ms][🥇][①][coroutname:@coroutine#1][tname:main/tid:1] [>][🫡] Cancellation Exception - rethrowing.
[ERROR][elapsed:  617ms][🥇][①][coroutname:@coroutine#1][tname:main/tid:1] back at MAIN got an exception! of type=[JobCancellationException] with msg=[ScopeCoroutine was cancelled] cause=[kotlinx.coroutines.JobCancellationException: ScopeCoroutine was cancelled; job="coroutine#1":ScopeCoroutine{Cancelled}@768b970c]. Exiting with error code 1

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:run'.
> Process 'command '/home/nickolaykondratyev/.jdks/corretto-21.0.7/bin/java'' finished with non-zero exit value 1

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

BUILD FAILED in 1s