He-Pin commented on code in PR #1142:
URL: https://github.com/apache/pekko-http/pull/1142#discussion_r3543793702
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http-core/src/main/scala/org/apache/pekko/http/impl/util/StreamUtils.scala:
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@@ -58,11 +64,17 @@ private[http] object StreamUtils {
override def onPull(): Unit = pull(in)
override def onUpstreamFinish(): Unit = {
- val data = finish()
- if (data.nonEmpty) emit(out, data)
- completeStage()
+ try {
+ val data = finish()
+ if (data.nonEmpty) emit(out, data)
+ completeStage()
+ } finally {
+ finished = true
Review Comment:
Setting in the finally block prevents from calling if throws. In that
failure path the stage still stops, but is false, so the deflater leak this PR
is trying to fix can still happen. Please move the flag assignment onto the
success path, right before . That keeps the happy path idempotent while still
letting clean up on exceptions.
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