m-trieu commented on code in PR #31902:
URL: https://github.com/apache/beam/pull/31902#discussion_r1730027544
##########
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/client/AbstractWindmillStream.java:
##########
@@ -290,12 +333,83 @@ private void setLastError(String error) {
lastErrorTime.set(DateTime.now());
}
+ protected abstract void shutdownInternal();
+
public static class WindmillStreamShutdownException extends RuntimeException
{
public WindmillStreamShutdownException(String message) {
super(message);
}
}
+ /**
+ * Request observer that allows resetting its internal delegate using the
given {@link
+ * #requestObserverSupplier}.
+ */
+ @ThreadSafe
+ private static class ResettableRequestObserver<RequestT> implements
StreamObserver<RequestT> {
+ private final Supplier<StreamObserver<RequestT>> requestObserverSupplier;
+
+ @GuardedBy("delegateRequestObserver")
+ private final AtomicReference<StreamObserver<RequestT>>
delegateRequestObserver;
Review Comment:
done
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