@Override
  public void processElement(ProcessContext c) throws Exception {
    KeyedWorkItem<K, InputT> element = c.element();

    K key = c.element().key();
    TimerInternals timerInternals = c.windowingInternals().timerInternals();
    StateInternals<K> stateInternals = stateInternalsFactory.stateInternalsForKey(key);

    ReduceFnRunner<K, InputT, OutputT, W> reduceFnRunner =
        new ReduceFnRunner<>(
            key,
            windowingStrategy,
            ExecutableTriggerStateMachine.create(
                TriggerStateMachines.stateMachineForTrigger(windowingStrategy.getTrigger())),
            stateInternals,
            timerInternals,
            WindowingInternalsAdapters.outputWindowedValue(c.windowingInternals()),
            WindowingInternalsAdapters.sideInputReader(c.windowingInternals()),
            droppedDueToClosedWindow,
            reduceFn,
            c.getPipelineOptions());

    reduceFnRunner.processElements(element.elementsIterable());
    for (TimerData timer : element.timersIterable()) {
      reduceFnRunner.onTimer(timer);
    }
    reduceFnRunner.persist();
  }
Beispiel #2
0
    @Override
    public void processElement(WindowedValue<KeyedWorkItem<K, V>> element) throws Exception {
      KeyedWorkItem<K, V> workItem = element.getValue();
      K key = workItem.key();

      UncommittedBundle<KV<K, Iterable<V>>> bundle =
          evaluationContext.createBundle(application.getOutput());
      outputBundles.add(bundle);
      CopyOnAccessInMemoryStateInternals<K> stateInternals =
          (CopyOnAccessInMemoryStateInternals<K>) stepContext.stateInternals();
      DirectTimerInternals timerInternals = stepContext.timerInternals();
      ReduceFnRunner<K, V, Iterable<V>, BoundedWindow> reduceFnRunner =
          new ReduceFnRunner<>(
              key,
              windowingStrategy,
              ExecutableTriggerStateMachine.create(
                  TriggerStateMachines.stateMachineForTrigger(windowingStrategy.getTrigger())),
              stateInternals,
              timerInternals,
              new DirectWindowingInternals<>(bundle),
              droppedDueToClosedWindow,
              reduceFn,
              evaluationContext.getPipelineOptions());

      // Drop any elements within expired windows
      reduceFnRunner.processElements(
          dropExpiredWindows(key, workItem.elementsIterable(), timerInternals));
      for (TimerData timer : workItem.timersIterable()) {
        reduceFnRunner.onTimer(timer);
      }
      reduceFnRunner.persist();
    }