public override void Process(K key, V value)
{
if (key == null)
{
log.Warn($"Skipping record due to null key.value =[{value}] topic =[{Context.RecordContext.Topic}] partition =[{Context.RecordContext.Partition}] offset =[{Context.RecordContext.Offset }]");
return;
}
observedStreamTime = Math.Max(observedStreamTime, Context.Timestamp);
long closeTime = observedStreamTime - windowOptions.GracePeriodMs;
var matchedWindows = windowOptions.WindowsFor(Context.Timestamp);
foreach (var entry in matchedWindows)
{
long windowStart = entry.Key, windowEnd = entry.Value.EndMs;
if (windowEnd > closeTime)
{
var oldAggAndTimestamp = windowStore.Fetch(key, windowStart);
Agg oldAgg = oldAggAndTimestamp == null ? default : oldAggAndTimestamp.Value;
long newTs;
Agg newAgg;
if (oldAggAndTimestamp == null)
{
oldAgg = initializer.Apply();
newTs = Context.Timestamp;
}
else
{
newTs = Math.Max(Context.Timestamp, oldAggAndTimestamp.Timestamp);
}
newAgg = aggregator.Apply(key, value, oldAgg);
windowStore.Put(key, ValueAndTimestamp <Agg> .Make(newAgg, newTs), windowStart);
tupleForwarder.MaybeForward(new Windowed <K>(key, entry.Value), newAgg, sendOldValues ? oldAgg : default, newTs);
public V Fetch(K key, long time)
{
var e = innerStore.Fetch(key, time);
return(e != null ? e.Value : default);
public ValueAndTimestamp <V> Get(Windowed <K> key)
{
return(store.Fetch(key.Key, key.Window.StartMs));
}