boyuanzz commented on a change in pull request #13105:
URL: https://github.com/apache/beam/pull/13105#discussion_r512908978
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/wrappers/streaming/ExecutableStageDoFnOperator.java
##########
@@ -484,6 +530,148 @@ void setTimer(Timer<?> timerElement,
TimerInternals.TimerData timerData) {
}
}
+ /**
+ * A {@link TimerInternalsFactory} for Flink operator to create a {@link
+ * StateAndTimerBundleCheckpointHandler} to handle {@link
+ * org.apache.beam.model.fnexecution.v1.BeamFnApi.DelayedBundleApplication}.
+ */
+ class SdfFlinkTimerInternalsFactory implements TimerInternalsFactory<InputT>
{
+ @Override
+ public TimerInternals timerInternalsForKey(InputT key) {
+ try {
+ ByteBuffer encodedKey =
+ (ByteBuffer)
keySelector.getKey(WindowedValue.valueInGlobalWindow(key));
+ return new SdfFlinkTimerInternals(encodedKey);
+ } catch (Exception e) {
+ throw new RuntimeException("Couldn't get a timer internals", e);
+ }
+ }
+ }
+
+ /**
+ * A {@link TimerInternals} for rescheduling {@link
+ * org.apache.beam.model.fnexecution.v1.BeamFnApi.DelayedBundleApplication}.
+ */
+ class SdfFlinkTimerInternals implements TimerInternals {
+ private final ByteBuffer key;
+
+ SdfFlinkTimerInternals(ByteBuffer key) {
+ this.key = key;
+ }
+
+ @Override
+ public void setTimer(
+ StateNamespace namespace,
+ String timerId,
+ String timerFamilyId,
+ Instant target,
+ Instant outputTimestamp,
+ TimeDomain timeDomain) {
+ setTimer(
+ TimerData.of(timerId, timerFamilyId, namespace, target,
outputTimestamp, timeDomain));
+ }
+
+ @Override
+ public void setTimer(TimerData timerData) {
+ try {
+ try (Locker locker = Locker.locked(stateBackendLock)) {
+ getKeyedStateBackend().setCurrentKey(key);
+ timerInternals.setTimer(timerData);
+ minEventTimeTimerTimestampInCurrentBundle =
+ Math.min(
+ minEventTimeTimerTimestampInCurrentBundle,
+
adjustTimestampForFlink(timerData.getOutputTimestamp().getMillis()));
+ }
+ } catch (Exception e) {
+ throw new RuntimeException("Couldn't set timer", e);
+ }
+ }
+
+ @Override
+ public void deleteTimer(StateNamespace namespace, String timerId,
TimeDomain timeDomain) {
+ throw new UnsupportedOperationException(
+ "It is not expected to use SdfFlinkTimerInternals to delete a
timer");
+ }
+
+ @Override
+ public void deleteTimer(StateNamespace namespace, String timerId, String
timerFamilyId) {
+ throw new UnsupportedOperationException(
+ "It is not expected to use SdfFlinkTimerInternals to delete a
timer");
+ }
+
+ @Override
+ public void deleteTimer(TimerData timerKey) {
+ throw new UnsupportedOperationException(
+ "It is not expected to use SdfFlinkTimerInternals to delete a
timer");
+ }
+
+ @Override
+ public Instant currentProcessingTime() {
+ return timerInternals.currentProcessingTime();
+ }
+
+ @Override
+ public @Nullable Instant currentSynchronizedProcessingTime() {
+ return timerInternals.currentSynchronizedProcessingTime();
+ }
+
+ @Override
+ public Instant currentInputWatermarkTime() {
+ return timerInternals.currentInputWatermarkTime();
+ }
+
+ @Override
+ public @Nullable Instant currentOutputWatermarkTime() {
+ return timerInternals.currentOutputWatermarkTime();
+ }
+ }
+
+ /**
+ * A {@link StateInternalsFactory} for Flink operator to create a {@link
+ * StateAndTimerBundleCheckpointHandler} to handle {@link
+ * org.apache.beam.model.fnexecution.v1.BeamFnApi.DelayedBundleApplication}.
+ */
+ class SdfFlinkStateInternalsFactory implements StateInternalsFactory<InputT>
{
+ @Override
+ public StateInternals stateInternalsForKey(InputT key) {
+ try {
+ ByteBuffer encodedKey =
+ (ByteBuffer)
keySelector.getKey(WindowedValue.valueInGlobalWindow(key));
+ return new SdfFlinkStateInternals(encodedKey);
+ } catch (Exception e) {
+ throw new RuntimeException("Couldn't get a state internals", e);
+ }
+ }
+ }
+
+ /** A {@link StateInternals} for keeping {@link DelayedBundleApplication}s
as states. */
+ class SdfFlinkStateInternals implements StateInternals {
Review comment:
I want to keep `SdfFlinkInternals` and `SdfTimerInternals` as inner
class so that they can access to `getKeyedStateBackend()`, `timerInternals` and
`stateInternals` from outer class.
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