protected <T> WindowedValue<T> makeWindowedValue(
T output, Instant timestamp, Collection<? extends BoundedWindow> windows, PaneInfo pane) {
final Instant inputTimestamp = timestamp;
final WindowFn windowFn = windowingStrategy.getWindowFn();
if (timestamp == null) {
timestamp = BoundedWindow.TIMESTAMP_MIN_VALUE;
}
if (windows == null) {
try {
windows =
windowFn.assignWindows(
windowFn.new AssignContext() {
@Override
public Object element() {
throw new UnsupportedOperationException(
"WindowFn attempted to access input element when none was available"); // TODO: 12/16/15 aljoscha's comment in slack
}
@Override
public Instant timestamp() {
if (inputTimestamp == null) {
throw new UnsupportedOperationException(
"WindowFn attempted to access input timestamp when none was available");
}
return inputTimestamp;
}
@Override
public Collection<? extends BoundedWindow> windows() {
throw new UnsupportedOperationException(
"WindowFn attempted to access input windows when none were available");
}
});
} catch (Exception e) {
Throwables.propagateIfInstanceOf(e, UserCodeException.class);
throw new UserCodeException(e);
}
}
return WindowedValue.of(output, timestamp, windows, pane);
}
private TriggerTester(
WindowingStrategy<?, W> wildcardStrategy,
ReduceFn<String, InputT, OutputT, W> reduceFn,
Coder<OutputT> outputCoder)
throws Exception {
@SuppressWarnings("unchecked")
WindowingStrategy<Object, W> objectStrategy = (WindowingStrategy<Object, W>) wildcardStrategy;
this.windowFn = objectStrategy.getWindowFn();
this.stubContexts = new StubContexts();
this.outputCoder = outputCoder;
executableTrigger = wildcardStrategy.getTrigger();
this.runner =
new ReduceFnRunner<>(
KEY,
objectStrategy,
timerInternals,
stubContexts,
droppedDueToClosedWindow,
droppedDueToLateness,
reduceFn);
}